Switch Selector. Model II

Transcription

1 Tehnal Lbrary, t^omm, n. Tehnal Manual MSF No n-5-5q-9 BM No Swth Seletor. Model (NASA-R-23903) SATURN B/5 UNT SWTH SELETOR, MDuL 2 (nternatonal Busness Mahnes :op.) Feb. ' p VJ0 N Uuld OJ/

2 MSF No BM No TEHNAL MANUAL SATURN B/V NSTRUMENT UNT SWTH SELETOR, MODEL Prepared under ontrat NAS 8-4OOO by nternatonal Busness Mahnes orporaton Federal Systems Dvson Huntsvlle, Alabama February 966 ^Tertna! Lbrary, Bellomm, fn.

3 LST OF EFFETVE PAGES J NSERT LATEST HANGED PAGES, DESTROY SUPERSEDED PAGES NOTE: The porton of the text affeted by the hanges s ndated by a vertal lne n the outer margns of the page. Page ssue Ttle Orgnal A Orgnal thru Orgnal v Blank Orgnal thru 9 Orgnal 0 Blank Orgnal thru 3 Orgnal 4 Blank Orgnal 5 thru 3 Orgnal 32 Blank Orgnal 33 Orgnal 34 Blank Orgnal 35 thru 39 Orgnal 40 Blank Orgnal 4 Orgnal 42 Blank Orgnal 43 Orgnal 44 Blank Orgnal 45 Orgnal 46 Blank Orgnal 47 Orgnal 48 Blank Orgnal 49 Orgnal 50 Blank Orgnal 5 Orgnal 52 Blank Orgnal 53 Orgnal 54 Blank Orgnal 55 Orgnal 56 Blank Orgnal 57 Orgnal 58 Blank Orgnal 59 Orgnal 60 Blank Orgnal 6 Orgnal 62 Blank Orgnal 63 Orgnal 64 Blank Orgnal 65 Orgnal 66 Blank Orgnal 67 Orgnal 68 Blank Orgnal 69 Orgnal 70 Blank Orgnal 7 Orgnal 72 Blank Orgnal 73 Orgnal 74 Blank Orgnal 75 Orgnal 76 Blank Orgnal 77 Orgnal 78 Blank Orgnal 79 Orgna 80 Blank Orgna 8 Orgna 82 Blank Orgna 83 thru 85 Orgna 86 Blank Orgna 87 Orgna * The astersk ndates pages hanged, added, or deleted by the urrent hange.

4 OMMENT SHEET Your omments wll help mprove ths publaton. The followng omment sheets are provded for your omments on the usefulness and readablty of ths publaton. Also, suggest addtons and deletons, and ndate any spef errors or omssons. Please forward the ompleted omment sheet to the followng address: Manager Department 966 BM orporaton Huntsvlle Falty Spae Systems enter Huntsvlle, Alabama

5 Manual Ttle Manual Number hange Date omments Name _ Address

6 Manual Ttle Manual Number hange Date omments Name Address

7 Lst of Related Douments LST OF RELATED DOUMENTS The manuals lsted below have been publshed under NASA ontrats as soure and referene nformaton on U systems and/or omponents. Ttle BM Number MSF Publshed Date hanged Date Saturn B/V nstrument Unt Struture Repar Manual H m September 965 Auxlary Power Dstrbutors H H Otober 965 Power Dstrbutor H m Otober 965 Emergeny Deteton System Dstrbutor H m Otober 965 ontrol Dstrbutor H m Otober 965 Measurng Dstrbutors H H Otober Volt Power Supply H m Otober 965 January Volt Measurng Voltage Supply H H Otober 965 Saturn B/V nstrument Unt nstrumentaton System Desrpton H H November 965 January 966 Swth Seletor, Model m February 966 LST OF SPEFATONS AND PROEDURES FOR SWTH SELETOR, MODEL H Ttle Shemat Swth Seletor (Top Drawng) Desgn Spefaton Aeptane Test Plan Qualfaton Test Plan Unt Outlne Number (50M67864)

8 ontents ONTENTS Seton Page Seton Page LLUSTRATONS TABLES NTRODUTON AND DESRPTON - ntroduton -2 Desrpton 2-3 Mehanal Desgn 2-4 Eletral haratersts Dmensons and Weght 6 m 2-8 Reset (Fored) Read ommand Reset (Automat) 2 2- Deodng Matrx Output Matrx and Telemetry Test Outputs rut Desrpton Referene Materal 38 PREPARATON FOR USE AND SHPMENT 83 PRNPLES OF OPERATON General Operaton 7 System Desrpton 7 omponent Desrpton 8 Detaled Operaton 6 Stage Selet 8 nput Relays 8 Verfaton 20 rv 3- Preparaton for Use Preparaton for Shpment Pakagng 83 PREVENTVE MANTENANE AND RE PAR Preventve Mantenane 87 Repar 87 Number Ttle LLUSTRATONS Page Number Ttle Page - Swth Seletor, Model 2-9 (Three-Quarter Vew) -2 Swth Seletor rut Module Swth Seletor Panel Assembly Swth Seletor Eletral 2-2 Assembly 4-5 Swth Seletor, Model 2-3 (nternal Vew) 5 2- Saturn V Swth Seletor 2-4 onfguratons LVD - Swth Seletor 2-6 nteronneton Dagram 2-3 Swth Seletor Regster 2-7 Word Format Swth Seletor (Model ) 2-9 Smplfed Dagram Automat Reset rutry, 2-2 Smplfed Dagram Typal Swth Seletor 2-22 Tmng Dagram Stage Selet Relay onfguraton nput and Verfy Relay rutry... 9 Read ommand Relay onfguraton 2 Automat Reset rutry 22 AG Sgnal Generaton Log 24 Porton of Row NOT Sgnal Generaton Log 26 Porton of olumn Sgnal Generaton Log 28 Zero ndate Log 29 Regster Test Log 30 Swth Seletor Eletral Shemat Dagram (Sheet of 2)... 3 Four nput AND rut (A 4 ) 35 PNP nverter Shemat Dagram NPN nverter Shemat Dagram Lathng Relay Shemat Dagram onventonal Relay Shemat Dagram 37 Swth Seletor Log Dagram (Sheet of 6) 39 Eletral Shemat, rut Module Type, Deode 5

9 ontents ONTENTS (ont) Number Ttle Page Number Ttle Page 2-24 Eletral Shemat, rut Module Type 2, Output Drver Eletral Shemat, rut Module Type 3, Read Eletral Shemat, rut Module Type 4, Stage Selet Eletral Shemat, rut Module Type 5, Auto Reset Eletral Shemat, rut Module Type 6, AND Log Eletral Shemat, rut Module Type 7, Deode Eletral Shemat, rut Module Type 8, Msellaneous Drver Eletral Shemat, rut Module Type 9, Msellaneous Drver Eletral Shemat, rut Mnrhlo Tvne fl Ponr..... Eletral Shemat, rut Module Type Read Eletral Shemat, rut Module Type 2, Msellaneous Eletral Shemat, rut Eletral Shemat, rut Module Type 4, Read Eletral Shemat, rut Eletral Shemat, rut Module Type 6, Stage Selet Pakagng nstrutons for Swth Seletor Model Number TABLES Ttle Page - Types and Use of Swth Seletor rut Modules -2 Eletral haratersts Swth Seletor Relay Funtons /v

10 Seton SETON NTRODUTON AND DESRPTON - NTRODUTON Ths tehnal manual defnes the prnples of operaton, pakagng proedures, and mantenane and repar nstrutons for the Model Swth Seletor (see Fgure -). The Swth Seletor s a ombnaton sold state and eletromehanal omponent whh provdes nterstage mode and sequene ontrol between the Launh Vehle Dgtal omputer/launh Vehle Data Adapter (LVD/LVDA) and the stage dstrbutors. One Swth Seletor s loated n eah stage and n the nstrument Unt of the Saturn Launh Vehles. By utlzng a dgtal odng-deodng tehnque, eah Swth Seletor an atvate, one at a tme, 2 dfferent ruts n the stage n whh t s loated. odng of the flght sequene ommands and the deodng of these ommands by the stage Swth Seletors has the followng advantages: the number of nterfae lnes between stages s redued; flexblty of the system wth respet to tmng and sequenng s nreased; and the dsrete output rutry of the LVD/LVDA s onserved. Fgure -. Swth Seletor, Model (Three-Quarter Vew)

11 Seton -2 DESRPTON -3 ME HANA L DE SGN The mehanal desgn of the Swth Seletor s omprsed of a housng, over, over gasket, and an eletral assembly. The eletral assembly onssts of two panel assembles, a harness assembly, two RF flters, and 34 rut modules. There are 4, 684 dsrete eletral omponents pakaged n the rut modules. rut Modules Fgure -2 shows a typal Swth Seletor rut module. Eletral omponents (transstors, resstors, dodes, relays), are mounted between two epoxy-glass nsulator plates whh serve prmarly as a holdng fxture. Retangular nkel wre (0.00 nh thk by nh wde) s welded to the omponent leads to provde the rut nteronnetons. Dual wres wth separate welds for eah wre are used where requred, for rut nteronnetons to mprove relablty. A Fberte FM-4005 molded onnetor s mounted at the bottom of the assembly. The onnetor ontans 22 dual pns. Eah pn s formed to a 90 bend suh that one end of the pn protrudes from the sde of the onnetor and the other end of the pn protrudes from the bottom of the onnetor. The nteronneton wre s welded to the dual pns on the sdes of the onnetor to provde nputs and outputs through the pns to the bottom of the module. Another Fgure -2. Swth Seletor rut Module onnetor s mounted to the top of the module and s utlzed for testng to the detaled part and rut funton level. The nteronneton wres to the test onnetor are smplex. The onnetors on the top and bottom of the module are dental exept that the pns on the test onnetor are ut to 0.05 nh to prevent nterferene. Two threaded nserts n the bottom of the module onnetor are used for attahment of the module to the panel assembly. Spef unused pns are ut off to provde polarzed mountng for eah module type. The module s ompletely ast n Styast 090 exept for the top surfae of the test onnetor and the bottom surfae of the module onnetor. Alumnum fol heat snks, 0.0 nh thk are formed to the sdes and bottom of the module and bonded n plae. The overall sze of the module s 3.00 nhes long by 0.80 nh wde by 2.00 nhes hgh. The Swth Seletor utlzes 3 of the 6 avalable types of modules to make up the 34 modules requred for eah Swth Seletor. Table - lsts the varous types of modules and ther funton. Module Type Type 2 Type 3 Type 4 Type 5 Type 6 Type 7 Type 8 Type 9 Type 0 Table -. Types and Use of Swth Seletor rut Modules Funton Deode - provdes row and olumn deode apablty Output drver Read ommand Stage selet Automat reset - R Network and thermstors AG Log drvers Deode Msellaneous drvers Msellaneous drvers Relay module Number Requred per Swth Seletor untl S/N 8, 2 on subsequent S/N's None after prototype 3 None after prototype 3

12 Seton Module Type Type 2 Type 3 Type 4 Type 5 Type 6 Table -. Types and Use of Swth Seletor rut Modules (ont) Funton Relay module Panel Assembles Msellaneous drver Relay module Relay module Deode - swth power, zero ndate, and olumn 02 Relay module Number Requred per Swth Seletor None after S/N 04 after S/N 7 The two panel assembles (see Fgure -3) provde eletral nteronnetons, thermal onduton, and mountng support for the rut modules. A panel assembly onssts of a prnted wrng board, a heat-snk plate, harness supports, and harness onneton termnals. The prnted wrng board s nh thk glass-epoxy lamnate wth a wrng pattern on both sdes and "plated through" holes. The harness onneton termnals are swaged and soldered nto spef "plated through" holes n the prnted wrng board. The heat-snk plate s magnesum alloy 0.09 nh thk. The plate has mahned retangular openngs at eah rut module and harness termnal loaton whh provde eletral learane around the module pns and harness termnals. The plate s oated wth a polyurethane resn for addtonal eletral nsulaton. The heat-snk plate s bonded wth epoxy resn to the top sde of the prnted wrng board. Two harness supports made of magnesum alloy are mounted at rght angles to eah other over the rows of harness termnals and between the rut module loatons and bolted to the panel assembly. u. ; s r -l.l. - *... * / * ' 4J Fgure -3. Swth Seletor Panel Assembly

13 Seton Harness Assembly The harness s a onventonal branhed type utlzng 26 AWG tnned opper, polyolefn nsulated, wre. The harness s layed out, formed, laed, and unt onnetors attahed pror to nstallaton on the eletral assembly. Harness wres are dual redundant for nreased relablty. At the unt onnetor, eah par of redundant wres s termnated n one ontat wth a rmp and a solder onneton. The bak of the unt onnetors are potted wth a polyurethane ompound to provde a seal and stran relef for the wres. Eletral Assembly The eletral assembly (see Fgure -4) ombnes the harness, rut modules, and the two panel assembles on a frame for pre-aeptane eletral test pror to nserton of the assembly nto the unt housng. The panels are arranged so that the bottom sdes fae eah other. The harness s assembled to the top sde of eah panel assembly and laed to the harness supports. The harness wres are nserted through a hole n the enter of eah onneton termnal and soldered on the bottom sde of the panel assembly. Shrnk sleevng, assembled over the harness wre and termnal, provdes stran relef on the wre. The harness assembly s branhed at one end of the panel assembles so that the panel assembles may be opened to 90 for the solder operatons and nspeton. The rut modules are mounted on top of the heat snk. Eah module s seured wth 2 srews through the prnted wrng board and the heat snk to the threaded nserts n the module onnetor. The module pns extend through the "plated through" holes n the prnted wrng board and are soldered from the bottom sde of the prnted wrng board. There are 9 rut modules and a flter mounted on the top panel assembly and 5 rut modules and a flter mounted on the bottom panel assembly. The flters are the same sze as a rut module. Eah flter s seured wth 4 srews to the panel assembly. Harness wres are soldered to 4 termnals on eah end of the flter. Stage +28 Vd and stage ommon (ground) are nputs to the unt n a ommon sheld to one lne flter. U +28 Vd and sgnal return (ground) are nputs to the unt n a ommon sheld to the other lne flter. These are the only shelded wres n the unt. Sx magnesum rals are bolted together to form a mountng frame. The frame s nserted between the bottom surfaes of the panel assembles. Fgure -4. Swth Seletor Eletral Assembly

14 Seton The panel assembles are bolted to the frame. A temporary test harness s attahed to the eletral assembly for pre-aeptane testng. The test harness wres are attahed to 6 termnals on the panel assembles n the same manner as the system harness. After ompleton of pre-aeptane test, the test harness wres are ut off just above the test termnals and the harness s removed. Shrnk sleevng s appled over the test termnals to seal them. Housng, over, and Gasket The omponent housng s a magnesum alloy astng. There are four unt mountng bosses wth 0.28-nh dameter mountng holes at eah orner of the astng. The bottom of the bosses s on the same plane as the bottom surfae of the astng. The bosses are nh thk. There are mountng holes for a 32-ontat onnetor, a 62-ontat onnetor, a pressure relef valve, and a purgng valve n one end of the astng. n the other end of the astng there are mountng holes for a 32-ontat onnetor, a 6-ontat onnetor, and a purgng valve. The top edge of the four sde walls of the astng have 32 tapped holes for over mountng* nsde the astng there are ten bosses whh extend from the bottom surfae and sde walls. These bosses have one tapped hole n eah for mountng the eletral assembly. On the bottom nsde surfae of the astng, four slone sponge pads are bonded wth adhesve. These pads are ompressed by the rut modules when the eletral assembly s nserted and thereby provde addtonal support and dampenng under mehanal envronment. The astng s treated wth rdte and oated wth alumnum pant. The unt over s a mahned magnesum alloy plate wth 32 learane holes for mountng. Four slone pads are bonded to the bottom surfae of the over. These pads are ompressed when the over s assembled to the housng by the rut modules of the eletral assembly and serve the same purpose as the pads nsde the housng. The over s treated wth rdte and panted wth alumnum pant. The over gasket materal s slone flled stanless steel whh provdes both a pressure seal and RF sheldng. The gasket s nh thk by 0.32 nh wde and forms a retangle to ft the top edge of the housng. There are 32 learane holes for the over mountng srews. omponent Assembly The eletral assembly s nserted through the top of the housng (see Fgure -5). The harness Fgure -5. Swth Seletor, Model (nternal Vew)

15 Seton onnetors are drawn through ther mountng holes and seured wth hexagonal nuts and safety wre. The eletral assembly s bolted n 0 plaes to the bosses n the bottom of the housng. The sheld ground wres are seured to the nsde surfae of the housng wall wth srews and lok washers. The pressure relef valve, whh s preset for a "rakng" pressure of 0 ps, and the two purgng valves are assembled n ther mountng holes. The over gasket and over are mounted on top of the housng and seured wth 32 srews. nput Voltages Table -2. Eletral haratersts -4 ELETRAL HARATERSTS The eletral haratersts of the Swth Seletor Model are spefed n Table DMENSONS AND WEGHT The Swth Seletor has the followng physal haratersts: Heght: 5.29 nhes maxmum Wdth: 8.56 nhes maxmum Length: 2.50 nhes maxmum Weght: 9.8 pounds (approx) Verfaton Stage supply voltage 28+4 Vd 28+2 Vd nput Power Peak Standby 7.6 Watts.9 Watts nput Sgnals Stage selet Read ommand Reset 8-bt oded nput "^ Up level: 7.5 Vd (mn) to 32.0 Vd (max) >Down level: open rut lamped to gnd for J negatve suppresson. Output Sgnals Regster verfaton 28 Vd hannel outputs. 28 Vd Zero ndate 28 Vd Regster test 28 Vd Telemetry No hannel atve 0.2 Vd One hannel atve 2.0 Vd More than one hannel atve. 3.0 Vd Operatng Temperature -25 (-3 F) to +00 (+22 F) n a partal vauum of not greater than 0-4 mm of merury. Eletral solaton 00 Megohms between all ponts not onneted by a ondutor. Heat Dsspaton 3.0 Watts

16 Seton n SETON PRNPLES OF OPERATON 2- GENERAL OPERATON 2-2 SYSTEM DESRPTON Eah stage, and the nstrument Unt, of the Saturn Launh Vehle are equpped wth a Swth Seletor. The Swth Seletor onssts of eletron and eletromehanal omponents whh deode dgtal flght sequene ommands from the LVDA/ LVD and atvate the proper stage ruts to exeute the ommands. Eah Swth Seletor an atvate, one at a tme, 2 dfferent ruts n ts stage. The seleton of a partular stage Swth Seletor s aomplshed through the ommand ode. odng of flght sequene ommands and deodng of the stage Swth Seletors redues the number of nterfae lnes between stages and nreases the flexblty of the system wth respet to tmng and sequene. n the Saturn V Launh Vehle, whh ontans 4 Swth Seletors, 448 dfferent funtons an be ontrolled usng only 28 lnes from the LVDA. (Two U volt and two sgnal return lnes from the ontrol Dstrbutor are also used.) Flght sequene ommands may be ssued at tme ntervals of 00 mllseonds. Fgure 2- llustrates the Saturn V Swth Seletor onfguraton. As shown, all Swth Seletor ontrol lnes are onneted through the ontrol Dstrbutor n the U to the LVDA and the eletral support equpment. To mantan power solaton between vehle stages, the Swth Seletor s dvded nto two setons: The nput seton (relay ruts) of eah Swth Seletor reeves ts power from the U; the output seton (deodng rutry and drvers) of eah Swth Seletor reeves ts power from the stage n whh the Swth Seletor s loated. The nput and output are oupled together through a dode matrx. Ths matrx deodes the 8-bt nput ode and atvates a PNP output drver, thus produng a Swth Seletor output. Eah Swth Seletor s onneted to the LVDA through 2^8 lnes: tage selet lnes - 8 Read ommand lnes - 2 Reset (fored) lnes - 2 Bt regster output lnes - 8 Verfaton lnes - 8 n addton, there are 2 lnes for U +28 Vd and 2 lnes for sgnal return between the ontrol Dstrbutor and the Swth Seletors. The wre pars for stage selet, read ommand, fored reset, U + 28 Vd, and sgnal return are redundant. Only one of eah par s requred for normal operaton. All onnetons between the LVDA and the Swth Seletors, wth the exepton of the stage selet nputs, are onneted n parallel as shown n Fgure 2-2. The output sgnals of the LVDA swth seletor regster, wth the exepton of the 8-bt ommand, are sampled at the ontrol Dstrbutor n the U and sent to U PM telemetry. Eah Swth Seletor also provdes 3 outputs to the telemetry system wthn ts stage. The Swth Seletor s desgned to exeute flght sequene ommands gven by the 8-bt ode or by ts omplement. Ths feature nreases relablty and permts operaton of the system despte ertan falures n the LVDA swth seletor regster, lne drvers, nterfae ablng, or Swth Seletor relays. The flght sequene ommands are stored n the LVD memory and are ssued aordng to the flght program. When a Programmed nput/output (PO) nstruton s gven, the LVD loads the 5-bt swth seletor regster wth the omputer data. The LVDA swth seletor regster word format s shown n Fgure 2-3.

17 Seton Swth seletor regster bts through 8 represent the flght sequene ommand. Bts 9 through 3 selet the Swth Seletor to be atvated. Bt 4 resets all the relays n the Swth Seletors n the event data transfer s norret as ndated by faulty verfaton nformaton reeved by the LVDA. Bt 5 atvates the addressed Swth Seletor for exeuton of the ommand. The LVD loads the swth seletor regster n two passes; bts through 3 are loaded durng the frst pass and, dependng on the feedbak ode, ether bt 4 or bt 5 s loaded durng the seond pass. After the Swth Seletor nput relays have been "pked" by the 8-bt ommand, the omplement of the reeved ode s sent bak to the LVDA/ LVD over eght parallel lnes. The feedbak (verfaton nformaton) s returned to the dgtal nput multplexer of the LVDA and s subsequently ompared wth the orgnal ode n the LVD. f the feedbak agrees wth the orgnal ode, a read ommand s gven. f the feedbak does not agree wth the orgnal ode, a reset ommand s gven (fored reset), and the LVD/LVDA ressues the 8-bt ommand n omplement form. A typal operaton yle, to ntate a gven funton n a partular stage, s aomplshed as follows: The 8 verfy lnes are sampled to ensure that all stage selet relays have been reset, thereby ensurng an unwanted stage s not seleted. Zero voltage on all lnes ndates that ths ondton exsts. The presene of U + 28 Vd on the verfy lnes ndates that the verfy lnes are enabled beause a stage Swth Seletor s not reset. Havng deteted ths stuaton, the LVD ommands a "fore reset" and then reheks the verfy lnes. The LVD nserts the 8-bt flght ommand nto the LVDA swth seletor regster. At the same tme, a stage selet ommand s sent to the approprate Swth Seletor. Applaton of the stage selet ommand ompletes the sgnal return path for the nput relays and allows the 8-bt ommand to be stored n the Swth Seletor nput relays. The verfaton lnes are sampled to determne f the ommand transfer was orret. f the verfaton s orret, the LVD sends a read ommand to the Swth Seletor; atvatng t, and ausng the proper output to our. f the verfaton s not orret, the LVD ntates a reset ommand to prepare the Swth Seletor to reeve the omplement of the orgnal ommand. After the fored reset s ompleted, the LVD loads the stage selet ommand, and the omplement of the prevously sent ommand, nto the LVDA swth seletor regster. Negletng the verfaton nformaton that ours after the omplement ommand s nserted, the LVD ntates a read ommand whh produes an output from the seleted swth seletor hannel. The read ommand also energzes the automat reset rutry whh returns the Swth Seletor to the reset ondton to prepare t for a new yle. 2-3 OMPONENT DESRPTON A desrpton of Swth Seletor operaton s gven n the followng paragraphs (refer to the smplfed shemat dagram shown n Fgure 2-4). The rut funtons of the Swth Seletor are as follows: Stage selet nput relays Verfaton Reset (fored) Read ommand Reset (automat) Deodng matrx Output matrx and telemetry Test outputs

18 Seton 0)"^ "^ _ " " ~N - z UJ _ a. 3 5 g2 ; 3o uj ol Q- LO x ^ ^ O ) ' 0 ( 5 u T3 or >- M V ' - E N ^" "^ 3 ~> ^ m uj - uj O O (X /r\ ^ \J _J < S - ^ - ^ n ^ -O 0 <3 + u j.n-j oj ^ ^. V D -*' 0 ' b -^ r r r r ^ ^ ^ ^ O,3 y "u <U tm^ O) - O JO nvj (fv? f{(v ({(*v* > j -o /5 XU0. m ^ F r^ fl ^ 3 l- 3 ' ^ /( _^ J) ut3 u "o 6-*- u-»- <^J) t^j t^oj tna> > _ 3 > ^JL- ^3 < u. D5 - : j ^ "2, <u 3 'Eg 0) ^ <U *- «r- m o> 3 S» 3 *--a -^ P D) 5 < *" _ lj\ " U ~ " J ^ ^ 8,. u g _.':.E _ u g,.e S J g.e ~? x 3 *- t> ^0 0) ^ 3 ^ P - *. :_j j - 5 : ^ f- E rt. g-b,2"" J!. 0 DO» a> D = < 0-0.' _ ^ <U x o / ^ - j f - V u L ( * J 5) a>,> k rd u u \ N n - a _ j ' \ tu > < «> - ": L ^ -«5 V!' v., \< V v " V > f^ j f. j T (U'^tx'^ v^n't <U "2j M "^ "5 ' " O J ' D -o o> *5 '"-QQJ'^ N P 0,^^ P ^ < N P 0 ^ 0 ^ o>!:5 < l - - ^ "> o O O j>! '"^ oj'so-s'. -=" * o ~ 4) O 0) "D O <> *^.. = Q- =6 3 l_ w» 5 a> «> ^ ' \ v S J; u o oo u 5 S J N D aj t5 J " ' ll n u n ll u u n D ' 0 o 0-3 O "O (U u- O5- j-^ o> «_g ^"a3 ^ 5f -o "o " "" D> + -' 4-^*" U Q _l r L s. / V t. ; j Reever ^S y^ S -D < 5 ^S^x' "x SjX' "^^^x' "S^^^x" f j l }' j!j Fgure 2-. Saturn V Swth Seletor onfguraton 9/0

19 Seton H The Swth Seletor operates on postve log (. e., + 28 Vd for a bnary "" and 0 Vd for a bnary "0"). Stage Selet The purpose of the stage selet ommand s to enable the desred Swth Seletor to reeve the oded flght sequene ommand from the LVDA. The stage selet ommand ( bt) s transmtted ndvdually on a separate lne to eah Swth Seletor. Beause of the danger of overloadng the LVDA, no more than 2 Swth Seletors an be addressed smultaneously. The stage selet ommand sets three magnet lath relays n the addressed Swth Seletor. The settng of these relays ompletes a ground path LVD LVDA Stage Selet (Spare) ontrol Dstrbutor 5-Bt Seral Flght "* ommand Reset Read through * 8 Lnes Parallel y \ f ' r, Sgnal ^ Return \ \ U, 6D OM +28 VHr f O " 8-Bt Seral Dgtal nput Multplexer through 8 8 Lnes Parallel - '. L < * ( < ' ' """" D Swth Seletor { t S-VB Swth Seletor : > t ( b-ll Swth _ Seletor 4 4 ' 4 k J J ' Swth Seletor Notes:. 22nes between eah Swth Seletor and lnes (maxmum number)avalable to Swth LV A. Seletors from LVDA (5 Swth Seletors) nes between all Swth Seletors and LV A (Saturn B) (3 Swth Seletors) nes between all Swth Seletors and LV A (Saturn V) (4 Swth Seletors) lnes (U +28 Vd and sgnal return) to all Swth Seletors from ontrol Dstrbutor (Saturn B and V). BMT7 Fgure 2-2. LVD - Swth Seletor nteronneton Dagram

20 Seton n ommand Bts 9 0 2J34 5 Stage selet (One bt per stage others are spare) 5 *- 5 -o BM T8 Fgure 2-3. Swth Seletor Regster Word Format for the read ommand relay, the set sde of the nput relays, and the verfy power relay (see Fgure 2-4). Ths aton ondtons the read and nput relays to reeve ommands from the LVDA and energzes the verfy power relay. When the verfy power relay ontats lose, U + 28 Vd power s appled through a set of stage selet ontats to the verfy relay ontats; and stage + 28 Vd s appled to the verfy relays. The Swth Seletor an now aept the 8-bt ommand from the LVDA, store t n the nput relays, and make verfaton nformaton avalable to the LVDA. nput Relays The nput regster of the Swth Seletor s made up of eght magnet lath relays, ontrolled by the 8-bt oded ommand from the LVDA. The oded ommand (onsstng of 8 bts n parallel) s avalable to the Swth Seletor durng the same perod of tme the stage selet sgnal s present. As soon as the stage selet relays are set, a sgnal return path s provded for the oded ommand through the nput relay ols (see Fgure 2-4). Ths allows the oded ommand to be stored n the nput regster. One the oded ommand s stored n the nput regster, bnary nformaton s avalable to the verfaton regster, olumn deoder, row deoder, and the AND gate generator. Verfaton A feedbak rut s used to provde verfaton nformaton bak to the LVD. Ths rut onssts of 8 relays, and s ontrolled by the nput relay ontats. When a "" s appled to the nput relay set ol, stage ground s swthed to the verfy relay set ol ausng the normally losed verfy relay ontat to open; ndatng a "0" to the LVD. When a "0" s appled to the nput relay set ol, the nput relay ontats reman n the reset ondton. Stage ground remans appled to one sde of the verfy relay reset ol, ausng the verfy relay ontat to reman n ts normally losed poston. Therefore, the verfaton output of a Swth Seletor s the omplement of the nput ommand. Read ommand mmedately after verfaton of the orgnal ommand, the read ommand s ntated. f verfaton of the orgnal ommand proved to be false, the read ommand wll not be ntated by the LVD untl the fored reset, stage selet, and omplemented ommand have been transmtted to the Swth Seletor. Three onventonal (non-lathng) relays are pked when the read ommand s reeved from the LVDA. One sde of the ols of these relays s onneted to the read ommand sgnal, the other sde s onneted to the U sgnal return through the stage selet relay ontats. Thus, a stage selet sgnal must have been reeved before a read ommand relay an be energzed. When the read relay ontats lose, stage ground s appled to the swth power nverters (SPWRA and SPWR) n the deoder matrx. These nverters generate voltages (SPWRA and SPWR) whh atvate the AND gate generators and the olumn deoder rutry allowng the oded ommand to be deoded and an output to our. Reset (Fored) A fored reset s ntated by the LVD when the LVD determnes that the verfaton nformaton s not the omplement of the gven ommand. The reset sgnal s appled to the fored reset relay ol ausng the fored reset ontats to lose. Ths aton apples stage + 28 Vd to the stage selet and nput relay reset ols forng the Swth Seletor nto the reset ondton shown n Fgure 2-4. After the fored reset has been ompleted, the stage selet ommand and the omplement of the orgnal flght sequene ommand are transmtted to the Swth Seletor. The omplement ommand s not verfed by the LVD before the read ommand s ssued. Reset (Automat) An automat reset pulse s generated when stage power s ntally appled to the Swth Seletor and when the read ommand s ssued. The 2

21 Seton Regster Verfaton to LVDA U +28 Vd D +28 Vd Sgnal ^ Return ommand Sgnals From LVDA Swth Seletor Regster Fored Reset Bl BN Stage +28 Vd" Read KNP nv Relays ' ' Stage +28 Vd Return SPWR Bts Bts OLUMN DEODER AG 0000 m of 7 Possble nputs Read- From LVDA Swth Seletor Bts thru 8 { Regster *^,\ T ' 'V Set ~ nput Relays (8) Stage Selet Rela X s (Reset) r Read ommand ["] n ph ^ AUTO RESET --, Pwr - nv J - Fore ~ Reset V. Set A/- v^ Verfy Relay (8) A. V Reset _ Verfy ~ Power Stage +28 Vd Return Bt NOT _[_Set - nput < Relay ontats Reset Bt * B7N B8 B8N B4 B4N B5 B5N B6 B6N AND GATE GENERATOR Bt H" -~ Relays Stage +28 Vd Return AG AG AGN Bts - Bts - AG2 AG3 AG4 AG5 AG AG AG ROW DEODER OUTPUT MATRX o (7X6) olumn of 6 Possble nputs Notes:. Double-weght lnes ndate U Power; sngle-weght lnes ndate ndvdual stage power. 2. All relays and ontats shown n the reset ondton. & 0000 Output hannel Drver \ *Sngle hannel Atve No hannel Atve Two or More Atve ^Zero ndate Regster 'Test, Sw Sel Output 2 Outputs >To Telemetry = 2.0V ±25% = 0.2V or less = 3.0 V or more.to Funtonal ontrol ruts Stage +28 Vd Return ( Stage +28 Vd BM T9 Fgure 2-4. Swth Seletor (Model H) Smplfed Dagram 3/4

22 Seton n automat reset rutry onssts of a power nverter, an R network, and a set of read ommand ontats. Atvaton of the read ommand relay ontats s not requred to produe the "Power ON" reset pulse. Pror to the applaton of stage power to the Swth Seletor, the read ommand ontats are n the reset ondton (as shown n Fgure 2-5) and apator s n a dsharged state. When power s appled to the Swth Seletor, stage 28 Vd s appled to the emtter of the power nverter and apator begns to harge through base resstor (R3) and thermstor (RT). Under these ondtons the power nverter turns on, produng an output of approxmately 28 Vd at the olletor. Ths output s appled aross the nput relay reset ols and the stage selet reset ols forng the Swth-Seletor nto a reset ondton. The duraton of the reset pulse s determned by the harge tme of apator through base resstor R3 and thermstor RT. When harges suffently, the power nverter s turned off and the reset pulse s removed from the reset ols. The automat reset pulse ntated by the read ommand s developed exatly the same as the "Power ON" reset pulse. When the read ommand s ssued, the normally open read ommand relay ontat loses, and the normally losed read ommand relay ontat opens. Ths allows apator to dsharge through resstor Rl. The power nverter remans turned off (due to lak of base drve) Read md ~ ontats Stage Selet Reset olls Fgure 2-5, Automat Reset rutry, Smplfed Dagram BM T0 untl the read ommand s removed. When the read ommand s removed, the read ommand relay ontats return to the reset ondton. At ths tme, apator begns to harge provdng base drve for the power nverter. The power nverter turns on, produng an output of approxmately 28 Vd at the olletor. The output s appled aross the nput relay and stage selet relay reset ols forng the Swth Seletor nto the reset ondton as shown n Fgure 2-4. As prevously stated, the duraton of the reset pulse s determned by the harge tme of apator through base resstor R3 and thermstor RT. When s suffently harged, the power nverter s turned off and the reset pulse s removed from the reset ols. Deodng Matrx The deodng matrx s omprsed of PNP nverters, NPN nverters, and AND ruts arranged so that seleton of a partular output hannel an be made by ether the true or omplement nput ode. Ths matrx an be dvded nto three setons as follows (see Fgure 2-4): AND gate rutry Row deoder olumn deoder The objet of these ruts s to generate a partular olumn and row sgnal for eah nput ode and to send these sgnals to the output matrx upon reept of the read ommand sgnal. The 8-bt oded ommand s transferred to the deodng matrx by operaton of the nput relay ontats. When a bnary "" s appled to an nput relay set ol, the normally open nput relay ontat loses and the normally losed nput relay ontat opens. Ths auses stage ground to be swthed from the verfy relay reset ol to the verfy relay set ol. The bt NOT nput to the deodng matrx s now ted to stage ground, whle the bt nput lne to the deodng matrx s at stage + 28 Vd. When a bnary "0" s appled to an nput relay set ol, the nput relay ontats reman n the reset ondton. Wth the nput relay ontats n the reset 5

23 Seton ondton, the bt NOT nput to the deodng matrx s at stage + 28 Vd and the bt nput to the deodng matrx s a 0 Vd. The 8-bt ommand s sub-dvded nto groups for deodng and output drver seleton. The least three sgnfant bts (, 2 and 3) are deoded to enable the olumn seleton rutry. The next three bts (4, 5 and 6) are deoded to enable the row seleton rutry. Bts 7 and 8 and SPWRA (ontrolled by read ommand relays) are appled to the AND gate generator where they are deoded to supply the approprate AND gates to the olumn and row deoders. Bt 8 s appled to the AND gate generator where t s deoded to determne whether the oded ommand s a true or omplement word. The lstng below llustrates the Boolean expressons for deodng bts 7 and 8. AG = B8 Read ommand AGN AG2 AG3 AG4 AG5 B8N AG AG Read ommand B7 B7N AGN- B7N AGN- B7 where: B8 = Bt 8 = Bt 8 s a bnary "". B8N = Bt 8 NOT = Bt 8 s a bnary "0". When deodng a typal word (0000) where bts 8 through are arranged from left to rght, the olumn s determned by bts 8, 3, 2 and, or 00, or more ompletely by AGN-B3-B2N- Bl. Smlarly, the row s determned by bts 8, 7, 6, 5, and 4, or 000, or more ompletely AG5-B6N- B5 B4N. However, f the nput regster transfer rutry shows a falure, the omplement of the orgnal word must selet the same output hannel n the output matrx. Therefore, the loaton defned by 0000 must also be defned by Ths omplement ode s deoded n the same manner as the orgnal ode. The olumn s determned by bts 8, 3, 2, and, or 00, or more ompletely by AG B3N - B2 -BN. The row s determned by 8, 7, 6, 5, and 4, or 00, or more ompletely by AG3 B6 B5N B4. Therefore, the total expresson to defne ths partular output hannel s: hannel XY = AGN AG5 B6N B5 B4N B3 B2N Bl + AG AG3 B6 B5N- B4 B3N B2 BN Output Matrx and Telemetry The 2 output hannels of the Swth Seletor are arranged n a 7 by 6 matrx onfguraton (7 olumns and 6 rows). The oordnate seleton s smlar to the X-Y ondene method ommon to ore memory tehnology. An output hannel drver (PNP nverter) wth the loaton X-Y n the matrx s atvated when the row deoder rutry (X) and the olumn deoder rutry (Y) are turned ON by applaton of the read ommand. When atvated, the output hannel drver produes a + 28 Vd output to the ontrol rutry of the seleted funton. n addton to produng an output voltage, eah output hannel drver also produes a separate telemetry output. The 2 telemetry outputs are ted together to produe one swth seletor telemetry output sgnal. Ths sgnal s transmtted va PM and DDAS telemetry. The telemetry sgnal ndates whether none, one, or more than one output hannel s ON at any gven tme. f one output hannel s atvated, the telemetry sgnal wll have a magntude of 2. 0 Vd ± 20 per ent; f no output hannel s atve, the telemetry sgnal wll have a magntude of 0. 2 Vd or less; and f more than one output hannel s atvated, the telemetry sgnal wll have a magntude of 3. 0 Vd or more. When the Swth Seletor s operatng properly, only one output hannel wll be atve an any gven tme. Test Outputs n addton to the telemetry output desrbed, eah Swth Seletor has two telemetry outputs whh are used to verfy that the nput seleton relays an be set and reset properly. These sgnals (regster test and zero ndate) are speal outputs of the output matrx. The regster test output s generated by an output drver when the nput address seleton s all ones and the read ommand has been ssued. The zero ndate output s generated when the nput address seleton s all zeros (read ommand s not requred). The zero ndate and regster test sgnals are transmtted va PM and DDAS telemetry. 2-4 DETALED OPERATON Ths seton ontans a more detaled desrpton of the Swth Seletor. Durng ths dsusson, referene wll be made to the tmng dagram, Fgure 2-6, the smplfed shemat dagrams, Fgures 2-7 through 2-5, and to the detaled shemat dagram, Fgure

24 Seton n Stage Selet nput Regster (Set) Verfy Relays Set Verfaton For Hung Stage Selet Z X 39-5 / 9 20 For Bt Reg. Set "Requred only after bad verfy. Fored Reset** Read ommand V Output Auto Reset Notes:. Regster set s delayed beause t requres stage selet to provde ground return. 2. Lathng relays reman set after power s removed. They reman set untl ther reset ols are energzed Relay pk and fall tmes reflet hgh temperature / ondtons (25 ). Tme n Mllseonds J MuNm ndates ndates voltage s s appled to relay set ols ndates relay swthng. Relay may be n ether state durng slope tme. BM Tl Fgure 2-6. Typal Swth Seletor Tmng Dagram 7

25 Seton n 2-5 STAGE SELET The stage selet ommand s the sgnal whh ondtons a partular Swth Seletor to reeve the flght sequene ommand from the LVDA. Stage selet relays K20, K2, and K22 (see Fgure 2-6) are magnet lath relays. One sde of eah relay ol s attahed to the nput lne arryng the stage selet ommand from the LVDA. The other sde of eah ol s onneted to U sgnal return. Applaton of the stage selet ommand energzes the set ols of the stage selet relays. After a 5-mllseond relay pk tme, the stage selet relay ontats lose (see Fgure 2-6). losure of ontats K20-2, K2-, K2-2 and K22-2 (see Fgure 2-6) omplete the ruts for () the nput relays (KS through K8S), (2) the read relays (K.7, K8, K9), and (3) the verfy power relay (K24), by tyng one sde of the relay ols to U sgnal return. When relay K24 s energzed, ontats K24-2 lose ompletng the rut that apples stage + 28 Vd to one sde of the set and reset ols of the verfy relays (K9 through K6). Operaton of relay ontats K22- and K24- results n U + 28 Vd beng appled to the ontats of the verfy relays (K9 through K6). Thus, operaton of the stage selet relays allows the 8-bt flght sequene ommand to be stored n the nput relays and prepares the Swth Seletor to generate verfaton nformaton. The stage selet relays are double-pole, double-throw relays whh are wred n a modfed trple modular redundant onfguraton (see Fgure 2-7). Ths onfguraton wll allow any one of the ols or ontats to fal and stll provdes a means to effet the desred funton. t an be seen that transfer s effeted by the proper operaton of ether K2- and K20-2, K22-2 and K2-2, or K20-2 and K22-2 and the dodes. The dodes prevent a falure n the event relay ontats K2- and K2-2 fal to open durng the reset yle. The remanng set of stage selet ontats, K22-, s wred n a smplex onfguraton (see Fgure 2-6). Ths set of ontats does not requre addtonal redundany beause of the true and omplement deodng apablty of the Swth Seletor. f K22- fals to lose upon ommand, the Swth Seletor wll lose ts verfy apablty and be fored to operate n the omplement mode. Stage selet ontats K20- are not used. K20S K2S K22S <X > K2-2 K20-2 y t? t. y K22-2 K2- Fgure 2-7. Stage Selet Relay onfguraton 2-6 NPUT RELAYS ( y ( BM T2 The nput relays (Kl through K8) are the relays whh reeve the oded address from the LVDA (see Fgure 2-8). The set ols of these relays are wred between the swth seletor regster n the LVDA and U sgnal return. The reset ols are wred n parallel between stage ground and two separate soures of reset power; the PNP nverters n the automat reset rut and stage + 28 Vd va the fored reset relay ontats K23- and K23-2. The ontats of the nput relays are loated between the deodng matrx and the verfy relay ols. Therefore, the ondton of the nput'relay ontats (set or reset) determnes the nput to the deode matrx and the operaton of the verfy relay set and reset ols. The nput relay ontats are onneted to the verfy relay set and reset ols as follows: nput Relay ontats Reset losed: Set open Reset open : Set losed Verfy Relay ol Energzed Reset Set 8

26 Seton n p 88 X <- v O r - 6 u ff D- z <.4- O X M. OO U O O M O "3J "5J O S M N z v^ ^ ** r * «) BBBBBB > ^HM K 9^^ rt.^ s < O 0 O - Q 0 Q. a - * ' 0 /\S V^ f f* 0 J2 N TJ 0 a. e xt g) _ o o,» \ V \ f f ' *, s; K v" " f.o BB^BBB ) BBB^H 0 ^ ". *_ J2 o *- ^ 4> O D oo ^v^ t d r PU J. 0 v N N to K 00 O Q 00 Q > ) S < Q 0 VQA u 0^ uo 4Duoju( 4ndu[ Fgure 2-8. nput and Verfy Relay rutry 9

27 Seton The nput relay ontats onnet stage ground to one sde of ether the set or reset ols of the verfy relays. Ths ompletes the rut through the ols to stage + 28 Vd, thereby provdng verfaton nformaton to the LVDA. n addton, the nput relay ontats determne how the bt and bt NOT nput lnes to the deode matrx are ondtoned. The followng table shows the relatonshp between the nput relay ontats and the nputs to the deode matrx. nput Relay ontats Reset losed: Set open Reset open: Set losed Bt Funton Down level (0 Vd) Up level (+28 Vd) Bt NOT Funton Up level (+28 Vd) Down level (0 Vd) A down level voltage s obtaned on a deode matrx nput lne when that lne s ted to stage ground through the nput relay ontats, and an up level voltage exsts on the matrx nput lne whh s not ted to stage ground. n the event relay ontat K24-2 fals to lose, an open rut at the nput to the deode matrx s onsdered to be an up level voltage. t should be noted that the stage selet ommand and the oded nput ommand are sent from the LVDA at the same tme (see Fgure 2-6). However, the nput relays wll not pk untl a maxmum of 6. 5 mllseonds after the ntaton of these sgnals. The delay s due to the pk tme of the stage selet relays. t then takes a maxmum of 6. 5 mllseonds to pk the nput relays. Ths means that after a maxmum of 3 mllseonds after ntal reept of the stage selet ommand, power wll be appled to the verfy relay ols. The power s appled n suh a manner that the nformaton ontaned n the verfy relay ols s the oded nput ommand held n the nput relays. The nput relays are wred n a smplex onfguraton. Redundany s provded by the true or omplement deodng apablty of the Swth Seletor. Resettng of the nput relays wll be dsussed later under the headngs RESET (FORED) and RESET (AUTOMAT). 2-7 VERFATON Verfaton s the proess by whh the Swth Seletor automatally nforms the LVD (through the LVDA) that the orret nput ommand s stored n the nput relays of the Swth Seletor. Ths proess s ontrolled by the operaton of the stage selet and nput relays (see Fgure 2-6). The stage selet ommand results n stage + 28 Vd beng appled to the set and reset ols of the verfy relays (K9 through K6) and U + 28 Vd beng appled to the normally losed verfy relay ontats (see paragraph 2-5, STAGE SELET). The oded nput address results n the nput relay ontats beng set to reflet the nput address. Upon suessful aeptane of the stage selet ommand and the nput address, the Swth Seletor s fully ondtoned to send verfaton nformaton to the LVDA. The nformaton sent to the LVDA s determned by the ondton of the nput relay ontats (see Fgure 2-8). When the nput relay ontats are n the reset poston, the verfy relay reset ols are energzed and the verfy relay ontats reman n ther normally losed poston. When the nput relay ontats are n the set poston, the verfy relay set ols are energzed and the verfy relay ontats are swthed to the open poston. Thus, to energze the set ol of a verfy relay, allowng no voltage to be sent to the LVDA, the orrespondng nput relay must be set, ndatng a bnary "" for that partular bt of the nput ommand. onversely, to energze the reset ol of a verfy relay, allowng + 28 Vd to be sent to the LVDA, the orrespondng nput relay must be reset, ndatng a bnary "0" for that partular bt of the nput ommand. The verfaton output s therefore the omplement of the nput ommand. Power wll be appled to the verfaton output rutry a maxmum of 3 mllseonds after reept of the stage selet ommand (see Fgure 2-6). However, the verfaton output for a gven nput ommand wll not be present untl a maxmum of 8 mllseonds after the stage selet ommand has been reeved. Ths s due to the relay pk tmes of the stage selet, nput, and verfy relays. 2-8 RESET (FORED) One onventonal double-pole, double-throw relay, K23, s used to ontrol fored resettng of a 20

28 Seton Swth Seletor (see Fgure 2-6). The fored reset ommand s ssued only f a false verfaton has been reeved by the LVD. When ths ours, t s neessary to lear the nformaton stored n the nput relays n order to prepare them to reeve the omplement of the orgnal nput ommand. Fored reset s ntated upon reept of the reset ommand from the LVDA. The reset ommand s appled to one sde of the reset relay ol, K23. The other sde s onneted to U sgnal return. When the ol of K23 s energzed, normally open ontats K23- and K23-2 lose, applyng stage + 28 Vd to one sde of the stage selet relay reset ols (K20R through K22R), and to one sde of the nput relay reset ols (KR through K8R). Sne relays KR through K8R and K20R through K22R have the other sde of ther ols onneted to stage ground, these relays wll be reset. Seres lmtng resstors R24-R34 protet the reset relay ols agans urrent surges. Resettng of the stage selet and nput relays results n stage ground beng appled to the verfy relay reset ols K9R through K6R, and power beng removed from verfy power relay K24. Under these ondtons power wll be appled to the verfy relay reset ols for a perod of tme equal to the relay fall tme of K24. Durng ths tme, the verfy relays (K9 through K6) wll be reset. The Swth Seletor s now reset and ready to reeve the omplement of the orgnal ommand. The reset yle s ompleted 9. 5 mllseonds after applaton of the fored reset ommand (see Fgure 2-6). When the read relays are energzed, the normally open ontats of K7-, K8-, K8-2, and K9- lose resultng n stage ground beng appled to the base ruts of the swth power nverters (SPWRA and SPWR) n the AG porton of the deode matrx. Ths allows the deodng proess to take plae and an output to be generated. The Swth Seletor output s present a maxmum of 6. 5 mllseonds after reept of the read ommand and remans untl the read ommand s removed and the read ommand ontats open (see Fgure 2-6). The read relays are wred n a modfed trple modular redundant onfguraton (see Fgure 2-9). Ths onfguraton allows any one of the ols or ontats to fal and stll provdes a means by whh the desred funton an be aomplshed. t an be seen that transfer s effeted by the proper operaton of ether K8-2 and K9-, K7- and K8-, or K7- and K9-2 and the dodes. The dodes prevent a falure n the event relay ontats K8- and K8-2 reman losed after the read ommand has been removed. Read relay ontats K7-2 and K9-2 are used to ontrol the automat reset rutry. The automat reset funton wll be dsussed n the followng paragraph. 2-0 RESET (AUTOMAT) Automat reset s aomplshed by a pulse generated wthn the Swth Seletor. The pulse s 2-9 READ OMMAND The read ommand ntates two separate funtons n the Swth Seletor. Frst, the read ommand enables the deode matrx, allowng an output to be generated. Seond, the read ommand ntates the automat reset yle. K7- K8- To Swth Power nverters, SPWRA and SPWR Three onventonal relays, K7 through K9, reeve the read ommand from the LVDA (see Fgure 2-6). One sde of the relay ols s onneted to the read ommand sgnal; the other sde of the ols s ted to U sgnal return through stage selet relay ontats K20-2, K2-, K2-2 and K22-2. Beause the read ommand relays are onneted to U sgnal return through the stage selet relays, t an be seen that a stage selet ommand must be reeved by the Swth Seletor before a read ommand an be aepted. To Stage Ground K8-2 K9- Fgure 2-9. Read ommand Relay onfguraton 2

29 Seton ntated by operaton of read ommand relay ontats K7-2 and K9-2 and aomplshes the same funton as the fored reset. A seres-parallel network of apators, l through 26, s onneted as shown n Fgure 2-0. One sde of the network s ted to stage ground; the other sde s onneted to read ommand relay ontats K7-2 and K9-2. When these ontats are n ther normally losed poston, the apator network s onneted through four parallel thermstors, RT through RT4, to the base ruts (A) of three parallel PNP nverters (p L ). (See paragraph 2-4 for a desrpton of the nverter rut.) f the apators are dsharged, the nverters wll be atvated ausng the output (B) to go to approxmately stage +28 Vd. Ths ondton allows the apators to harge to stage + 28 Vd present at the gated nput () of the nverters. The harge path s through the transstor, transstor base resstor, and the thermstors. The harge tme s determned by the equvalent value of these resstanes and the equvalent value of the apatane of the apator network. When the apators have harged to a voltage equvalent to that needed to shut off the nverter, the voltage at B drops to 0 Vd. The pulse thus generated at B of the nverters s the automat reset pulse. These pulses are onneted to reset ols KR through K8R and K20R through K22R through seres lmtng resstors R5 through Rl 5. The pulse wdth s equvalent to the tme between turn ON and turn OFF of the nverters. Stage +28 Vd Note: Relay ontats shown n ther normally losed poston. To Stage Selet Reset olls K20R, K2R, K22R To Bt 8 Reset oll KR To Bt 7 Reset oll K2R To Bt 6 Reset oll K3R To Bt 5 Reset ol K4R To Bt 4 Reset ol K5R To Bt 3 Reset ol K6R >B!t Relay Reset ols To Bt 2 Reset oll K7R To Bt Reset oll K8R 3 ST* '"T^ ST* ^T^ XTN «qn ^TN ^T\ /TN ^T\ ^TN XTN /TN Rl R2 R3 R4 * To Stage Gnd Fgure 2-0. Automat Reset rutry BM T5 22

30 Seton n The apator network s dsharged through resstors Rl through R4 durng the read ommand. When relay ontats K7-2 and K9-2 lose, the hgh sde of the apator network s onneted to one sde of the resstor network. The other sde of the resstor network s ted to stage ground. The dsharge tme s determned by the R tme onstant of the equvalent resstane of the resstor network and the equvalent apatane of the apator network. Beause the output of the nverters (B) may vary wth temperature, 4 thermstors, RT through RT4, were plaed n the base ruts of the nverters. The thermstors ompensate for output varatons due to temperature hange by addng or redung resstane n the base rut, thereby nreasng or dereasng the base drve of the rut as neessary. The effet of ths ompensaton s to mantan a onstant harge tme and thereby mantan the wdth of the automat reset pulse wthn the allowable desgn range of 3-/2 to 2 mllseonds. The R harge tme determnes the tme duraton between turn ON and turn OFF of the nverters. The apator network was purposely made large so that a falure of one apator wthn the network an be tolerated wthout the automat reset pulse wdth beng fored out of tolerane, ausng the Swth Seletor to fal. The automat reset pulse ommenes 8 mllseonds after the read ommand has been removed (see Fgure 2-6). Ths s due to the tme requred for the ontats of read ommand relays K7-2 and K9-2 to return to ther normally losed postons. 2- DEODNG MATRX The deodng matrx s omprsed of PNP nverters, NPN nverters, and AND log ruts (see paragraph 2-4 for desrpton of eletron ruts). The ruts are arranged so that the nput address an be deoded n ether ts true or omplement form. The output matrx s dvded nto three setons as follows: AG generaton log Row log olumn log The objet of these three setons s to generate olumn and row sgnals for eah nput ode and to transfer these sgnals to the output matrx upon reept of the read ommand. AG Generaton Log The AND gate rutry (see Fgure 2-) develops the ontrol sgnals for the output seton of the Swth Seletor. These sgnals (AG through AG5) are appled as gated nputs to the row and olumn deoders, whh n turn ondton the outpu' matrx to produe the desred Swth Seletor output. Operaton of the read ommand relays tes the nputs (A) of the swth power nverters to stage ground, resultng n the generaton of the SPWRA and SPWR sgnals. The output of the SPWRA nverter s suppled as the gated nput to the PNP nverters (p_) that generate AG and AGN sgnals. The bnary value of bt 8 of the nput ode determnes whether AG or AGN s generated. Refer to paragraph 2-6, NPUT RELAYS, to determne the manner n whh the nput relays transfer the nput ode to the deodng matrx. f bt 8 (B8) s a bnary "", approxmately + 28 Vd s appled to the nput (A) of the p L that generates AGN. Sne the nput s + 28 Vd, the nverter s turned OFF and the output (B) wll be 0 Vd, thus AGN s a bnary "0". f bt 8 (B8) s a bnary "", bt 8 NOT (B8N) s a bnary "0" plang 0 Vd on the nput (A) of the nverter that generates AG. Wth the nput of the nverter at 0 Vd, the nverter s turned ON and the output (B) wll be + 28 Vd, thus AG s a bnary "". f the bnary values of B8 and B8N are reversed, the nverter aton desrbed above wll be reversed and the bnary value of the AGl sgnals wll be reversed. The AGl and AGN sgnals are sent to other p L's to S ener a-te the AG2 through AG5 sgnals. The AGl sgnal s appled as the gated nput to the PL's that generate the AG2 and AG3 sgnals. The AGN sgnal s appled as the gated nput to the pl's generatng AG4 and AG5 sgnals. Therefore, regardless of the bnary value of B8 of the nput ode, two of the four nverters that generate AG2, AG3, AG4, and AG5 are suppled wth a gated nput. 23

31 Seton n o O o.. o 5 O) 000 H- ' ^ u ro OJUJ <a P a h M O m O < y o o < n 3 < ( O u *" z < 0 _ O < U ^ o < O < t < < s 5O a J -- O O O - < <] ^< < z _... U n" K O ' O O +- *- D D L,. Q. t. <u ;; K ll )^ f Q <-H >- a «" L. Z o 2 / O z O -v 3 O O ' 2 O, < ~t > 7 T t 5 fe e ot la; ^ > 0. ( g a)» > 4- V OQ - u ^ y -, ' < *l u «A ) O)"O M O js -^r ^- ^~ Q U U U vhh^eo o- o O O O "3" 0 O U O Mnee M f 5 J J. -. E E 2 *- 2 u u_ J u_ 3- Fgure 2-. AG Sgnal Generaton Log 24

32 Seton n However, t s the bnary value of B7 that determnes whh of the nverters suppled wth a gated nput s atvated, When B7 s a bnary "" and AG s present, + 28 Vd s appled to the nput (A) of the nverter that generates AG3. Ths sgnal (+ 28 Vd) mantans the AG3 nverter n the OFF state makng AG3 a bnary "0". However, under these same ondtons, B7N s a bnary "0". When ths sgnal (0 Vd) s appled to the nput of the AG2 nverter, the nverter s atvated makng AG2 a bnary "". f the bnary value of B7 s zero, the nverter aton desrbed above wll be reversed makng AG2 a bnary "0" and AG3 a bnary "". f B7 s a bnary "0" and AGN s present, the above desrpton wll be true for the nverters generatng AG4 and AG5 sgnals. The AG2, AG3, AG4, and AG5 sgnals are appled as gated nputs to the AND gates n the log ruts developng the row NOT sgnals. SPWR s appled to the olumn p drvers approxmately 300 mroseonds after the generaton of the AG sgnals, thereby allowng the row and olumn log to be ondtoned before the olumn p drvers are ondtoned. Ths delay prevents the possble generaton of extraneous Swth Seletor outputs. The tme delay s aomplshed by nstallng a mrofarad apator between the base and emtter of eah transstor n the SPWR nverter. The flter rut (R58, R59 and 38-43) on, the nput of the swth power nverters serves to redue 28 volt flutuatons aused by hatter n the read relays. The flter auses the SPWRA and SPWR sgnals to rse more smoothly, thereby preventng the possblty of voltage spkes beng oupled to the output log ausng extraneous Swth Seletor outputs. The purpose of the dodes loated between SPWRA and SPWR s to make the turn off tme of SPWR nverter equal to the turn off tme of SPWRA nverter. (SPWR wll lag SPWRA beause of the apators on the nput of the SPWR nverter.) f SPWR s allowed to lag SPWRA, the olumn p drvers wll reman gated one the SPWRA sgnal s removed; makng t possble to energze the NPN nverters n the olumn log produng extraneous Swth Seletor outputs. n addton to the dodes, resstors R60 and R6 serve as lne dsharge resstors for SPWR voltage. Row Log There are 6 row NOT sgnals generated. A porton of the generaton of these sgnals s shown n Fgure 2-2. Eah row NOT sgnal s generated by a par of AND gates and a NPN nverter. The AND gates sense ether the true or omplement ode of bts 4, 5, and 6. The ode of bts 7 and 8 have prevously been determned by generaton of the AG sgnal. Only one of the two AND gates an be qualfed at one tme, and that partular AND gate then atvates the nverter whh generates the desred row NOT sgnal. As an example, the followng dsusson wll show how the row 0 NOT sgnal s generated. (Row sgnals are desgnated n otal.) The bottom AND gate n the row 0 NOT rutry has the AG3 sgnal as ts gated supply. The nputs to ths AND gate are B4, B5, and B6. n order to qualfy ths AND gate, the AG3, B4, B5 and B6 lnes must all be at an up level. Ths requres that bts 4, 5, 6, 7 and 8 have the followng bnary values: B4, B5, B6 = Bnary "" B7 = Bnary "0" B8 = Bnary "" When the nput ode s as stated above, the bottom AND gate wll be qualfed produng an up level voltage to the nput of the NPN nverter. Wth an up level on the nput, the output of the nverter wll be lamped to ground produng a row 0 NOT sgnal. f the verfaton shows an error, the omplement of the nput ode wll be sent to the Swth Seletor. The ombnaton of B7 and B8 now ombne to produe an AG5 sgnal. B4, B5, and B6 are n a down level ondton, resultng n the B4N, B5N and B6N lnes to the AND gate beng ondtoned at an up level. Thus, the nputs to the top AND gate n the row 0 NOT rutry are all up level produng an up level nput to the NPN nverter. The up level on the nput of the nverter auses the output of the nverter to be lamped to stage ground produng a row 0 NOT sgnal. Thus, a falure n the nput relays an be tolerated wthout generatng an erroneous row NOT sgnal thereby ausng a Swth Seletor falure. 25

33 Seton From AG Generaton < Log >m ut ^ ay ontats o AG3 AG5 r AG2 ^ AG4 s B6N B6 B5N r B5 B4N B4 To other Deode / Matrx Log A B r G H A 3 J ^ A A B r A G '? AG5 D B4N B5N B6N A G B A, H 0 J K B4 B5 B6 A B r AG3 G A 3? _ B M r L D A B r A A G 3 j K G t5 fe o o, -r % A o B "^ "~ * D,,, B A V To Outp BM T7 Fgure 2-2. Porton of Row NOT Sgnal Generaton Log 26

34 Seton n Eah row NOT sgnal s generated n the same manner, usng dfferent AG sgnals n onjunton wth dfferent ombnatons of B4, B5, B6, B4N, B5N, and B6N overng all possble nput ondtons allowed. The row NOT sgnals are fed dretly to the output matrx log. olumn Log n addton to the row NOT sgnals, there are seven olumn sgnals generated n the deodng matrx. Fgure 2-3 llustrates a porton of the olumn sgnal generaton log. These sgnals are generated n a manner smlar to the row NOT sgnals. Two AND gates, one NPN nverter, and one PNP nverter are used to produe the olumn sgnal whh s fed dretly to the output matrx log. The dfferene stems from the use of dfferent AG sgnals, dfferent nput sgnals, and an addtonal nverter (PNP type). The bas gatng sgnals used n the olumn rutry are AG and AGN, and the nput sgnals are Bl, B2, B3, BN, B2N and B3N. The addtonal nverter n the olumn rutry results n the generated olumn sgnal beng an up level sgnal, whereas the row NOT sgnal s a down level sgnal. 2-2 OUTPUT MATRX AND TELEMETRY Output Matrx The output matrx onssts of 2 PNP nverters (p's) arranged n a 6 row by 7 olumn matrx (see Fgure 2-6). Eah allowed nput ommand wll selet of the 2 p's and produe a Swth Seletor output. Eah row NOT sgnal from the row log s onneted to the base nput (A) of seven output p's. Lkewse, eah olumn sgnal from the olumn log s onneted to the gated nput () of 6 output p's. ontrol of any of the 2 output drvers s aomplshed as follows: An output drver s ondtoned for an up level output (+28 Vd) by the presene of a down level (0 Vd) at the base nput and an up level at the gated nput. These nput ondtons ause the PNP transstors n the seleted p to ondut, ausng the +28 Vd gated nput to appear aross the output of the p. All other nput ondtons ause the p drvers to reman off, resultng n a down level output. Thus, an up level voltage on the olumn lne and a down level voltage on the row NOT lne wll ause the output drver at the nterseton of these two lnes to be at an up level voltage. All remanng output drvers wll reman n the down level stage as ondtoned by ther nputs. Telemetry The PNP nverters used n the output matrx are modfed to provde a speal telemetry output (see Fgure 2-8). The outputs are onneted to a ommon telemetry lne and sent to stage telemetry (see Fgure 2-6). An up level on any one of the output drvers results n an up level telemetry sgnal, ndatng to the ground equpment the presene of a Swth Seletor output. The magntude of the telemetry sgnal s determned by a resstve network. The telemetry sgnals of 8 p's are onneted through one 2K resstor to stage ground. Therefore, the effetve telemetry resstane s the equvalent of fourteen 2K resstors n parallel, or approxmately 806 ohms. 2-3 TEST OUTPUTS The Swth Seletor has two telemetry outputs whh are used to verfy that the nput seleton relays an be set and reset properly. These sgnals, zero ndate and regster test, are speal outputs of the output matrx. Zero ndate The presene of an all zero bnary nput ommand results n an up level voltage at the zero ndate output (see Fgure 2-4). The p that produes the zero ndate sgnal s ondtoned at ts gated nput () by three seres onneted log elements; a four nput AND gate (A4), a NPN nverter (N), and a PNP nverter (PL). An all zero nput ode yelds an up level voltage output from the AND gate. Ths up level s appled to the nput of the NPN nverter resultng n ts output beng lamped to ground. The down level NPN nverter output s appled to the base nput (A) of the PNP nverter resultng n an up level output. Ths up level beomes the gated nput for the zero ndate p. The nput (A) of the zero ndate (p) s ondtoned by two seres onneted log elements; a fve nput AND gate (As) and an NPN nverter. The all zero nput ode auses an up level AND gate output whh when appled to the NPN nverter, results n a down level nverter output. Ths down level s the nput (A) of the zero ndate p drver. 27

35 Seton n From nput Relay ontats sets J,- B3N, S3 2N ( 2 UN H + From AG Generaton < Log 3 Jl N B L G A3, K SPWR -A - B,, r A n A R f G A3 t D A B A G LJ J K >-A SPWR G o b A" o H J, r j K D N E A PL B A R G _ A 3 J K SPWR -A n l r - - A 'D E -. G D R A 0 K \ \ \ 8 S \ ' \ o 3 O O To other Deode Matrx Log To Output Matrx BM TB Fgure 2-3. Porton of olumn Sgnal Generaton Log 28

36 Seton n The up level gated nput, and the down level base nput mantan the zero ndate p at an up level state. onversely, durng non-zero nput odes, the zero ndate p s mantaned at a down level output. Note that the read ommand s not requred for zero ndate. Regster Test The presene of all ones n the nput ode and the applaton of the read ommand results n an up level voltage at the regster test output (see Fgure 2-5). Smlar to zero ndate, the regster test p s ondtoned at the gated nput () by three seres log elements; a three nput AND gate (As), an N nverter, and an p nverter. The nput (A) s ondtoned by two seres onneted log elements; a three nput AND gate (A^), and an N nverter. Ths operaton requres that the read ommand be ssued. The read ommand ntates generaton of the AG and AG2 gates. The AG and AG2 sgnals ondton the AND gates that generate the sgnals whh are suppled to the gated nput () and base nput (A) of the regster test (p). onversely, durng the all zero nput ode, the regster test p mantans a down level output. 2-4 RUT DESRPTON Ths seton ontans a desrpton of the ruts and relays whh make up the modules used n the Swth Seletor. The Swth Seletor uses three B4N " B5N " B6N B8N B7N F Ȧ J ( 3 ^ ( B From nput > Relay ] ontats 'N E B4 B5 DO R / n 3 G From AG Generaton Log w AG2 Stag e+283 Vd! B8N BN B2N 0-3M DON y\ f A 4 G j K A. p r! h 4 L P L Gated nput Zero ndate Bo se nput BM T9 Fgure 2-4. Zero ndate Log 29

37 Seton H bas log ruts whose funtons are AND and NVERT. There are two dfferent types of nverters, one type uses PNP transstors and s desgnated p, the other type uses NPN transstors and s desgnated N- AND rut The passve AND gate may have from four (A4) to sx (Ae) nputs. The gated nput for an AND rut may be suppled dretly from a + 28 Vd soure, or by a + 28 Vd sgnal from a PNP nverter. The AND ruts have a quad-redundant onfguraton (see Fgure 2-7 for an example of a quadredundant four nput AND rut). Operaton of an AND rut wll not be affeted by the malfunton of any detal part n the rut. Logal operaton of the AND rut s as follows: Wth an up level (+ 28 Vd) on the gated nput, and an up level on all of the remanng nputs, the AND rut produes an up level output. A down level voltage (0 Vd) at any of the AND rut nputs, nludng the gated nput, fores the output of the AND rut to be lamped to the down level nput. PNP nverter (p) The p nverter uses four transstors to provde a quad-redundant onfguraton (see Fgure 2-8). Operaton of the nverter wll not be affeted by the malfunton of any detal part n the rut. The gated nput may be suppled dretly from a + 28 Vd soure or by a + 28 Vd sgnal from a proeedng p rut. B4N B5N B6N B8N B7N A D ; G J K From nput Relay ' ontats Q, D ' 'N E > B4 B5 B6 A B ; ^3 G H K From AG Generaton Log AG2 AG SPWR From nput Relay ontats Bl B2 B3 G H J K A B D N A 'PL B Gated nput Base nput Regster Test BM T20 Fgure 2-5. Regster Test Log 30

38 Seton n Jl-A J4-A U-26VD HASSS ND J-W.X F RESET T Lyx s«<fy s S s s 2 J l\ ± - p ' ^ * * * ff K9 K0 Kll K2 K3 KM K5 K6 "-V *-V _L* _Lt _^ t_ t t_ t.. VERFY OUTPUTS J-H.J J4-H.J SGNAL RETURN HASSS NO T/P J4-UV OMMAND - ARST :OL2 Jl-K BT B(MSD ^.,. _MS J4.K»(-- J Jl-l BT 7 J4-L J-P J4.P BT ' * J!LJ *_*. "«4( *-'.** ^.^..^..^.^.^.^r.^^^..^..^^^. T T T T Jt-T»T (SO)». - RUT xouftt) KTA 0.82 WF APATOR 20.p RUT wodmo 8» THE ELMNATON OtWtfatO FROM THE BASE TO EMTTER OF Of BAS SOLATON DOOESR.R2.U EAH TRANSSTOR. AND M BM T2 - Fgure 2-6. Swth Seletor Eletral Shemat Dagram (Sheet of 2) 3/32

39 Seton n 8 B6N B6 B5N ' H' J ' K ' AH El Gf ' Pf V* - A - A - A -A L A Xf L- A --, A f - K- - AG2 - -* K 8*3 «: l< - - JAG2 - A* G J B A3 ' H AF - ' K 'P B 3300 p J p J " B JTTs _Dj J ' -f" - * '!h * p «f -P OLUMN 0 -A lp f 000 A D [A T j ' 'N D 0 r 225 -!'" B ' N "j J OLUMN 02 -A lp 'ft p ] ' OLUMN 03 f OLUMN 04 Ss -A 'P 0 J OLUMN os T B - A 'p 3 s? OLUMN 06 -A lp B^ '? OLUMN 07 -A lp a* P 0 e B - T/P F -A lp B *8 J3^EE ~* P " -A 'p B jfa -' p f <! T " D 96 J3-V -A 'P J2-MM"* -A lp B (J ar. "* -A lp B b-» -l. p B f JH * lllp?, B A _ p p -- J { p J3-Y lp g 02 T U2 A f ( B A 3 H--, ]A4 H J e 6*3 H ~ ~ J B*3 '" *&** P v P 'p T ' A -- 'ft D 00 P A B N D 00 OW0 A f 'N D ^ ' N J E T p E - 0 * U P. a. (. - 'r J2- D h 'P k lp 'P T B fe: 4. P. s!lrp. - 5 TZ A T/P Q a T/P P B J2-W _D. A lp T P B ST. -'P _0. T -4 t T A 'P B U2- -A P D A P r-4 L A lp T J3 - z. B -f B ffl- J3-L D B ] -A lp 0 3 j. _ - K- - - n QtOOl A3 - A F J AS - K- - T ^ AG3 - AF J B 3 j - - K A4 A F G- 6*3 H Me K. T B^frr'-A 'P B J2T< p T D : B,._ = ^r. -*'P B D p h, { r t ' f 32. T 4- - *&, -*» B 3-M %j " ' r E freb t t * 'p B u. 3-KK r^ " 9- N 5 00 OtOOO ! ' T -A 'P ETT- -A t D -*'P.ft; - ' r J d T T ^3-H 0 _A lp BJJT^H - A ' r f _A-'p BJ^ -A fj l_ -A.p.f L 4, f 0 K - -, p A, h _ K JA5 8 *3 5 -^ K l L «'3»[= " >.., n A H - B A3 H ' ] K T p Brf- -A 'P B D p [ T : D P T : _D_ "* D : t - P»ffe - A '" B D p J N E on B4 : fe -ft^. L- f» f f > H \rf-\ D D ^K V > N E T, T 050 og l -A lp jj -AP B - * n p T A 'P T D "j ^ t T - t- B f rl D P D B f T T r-k -A P r ^ A5 K - A.* B 3 j B A 3 j~^ JA3-8*3 j K Us B A3 H '-Alp B D - - E N E , K T/ p - f - -E 'N E -ff, T 3 8 jfl - * 'P BJ2T. " 9 B J3_p - A lp B T ^ SV-** B ft* ' p B^ - A ^ P B, r ' F Sf t D }f.. rn L» 'p B B 5b > -^r- w\ 4 R36 WV t S37!. j STAE NO 'N 000 E (. A 'P T/P l T/P -A P B A.? 2-AA P n! B2 3-E p -A 'P BJ4_ ^J -A p LLpJ -S- 3- ST. fl_ b TH TELEMETRY * -J2-G o.- H Do f- H Eo «- M Hr~ ALL DODES ARE SN645 RUT SHEMA! S A GATE NPUTO «N H! M < - -K ~tr~! - -M - M M M E ^OUTPUT * * >T o,««w o HK L> f '» K K SN753A S2N22^J/7^2222 SN75JA SN753A (\ BASE NPUT 3K 2 F 3K > ^2222 'p 9GATED NPUT ' SN753A 2K> 7.5 K > f-^ LJ-, > 7.5K ) *-*S*A>» R3^ vb/ \d/ R 4 S2N2907J S2 7.5K > 2 *»-^W- ^ R5 S2N2507 ; R? s 4 'N > 0K AL DODES ABE S N645 "R8J> otellmetry NOTES: E D. TERMNALS E.F AS SM WN ABOVE, OF ALL lpun RUTS SESPETVELY. REONNETEDTOSTAGE GND 2. ALL p RUTS Af GND (UltS ARE N 4. ALL RELAY ONTATS SH S. ASE GR UND Jl-j 4. K-6.K20-22 FL4068.7?5/l±5*/n AT F A* 5 "few? = SORA JE-350D-0.6?MF±59 7.R60-R6 = 8. RT-RT4-= f EYSTONE R4 J2- J3- J4-!R9 3K > 2< S 7.5K 6l2V ) l-w\, * 6. R-R4=68 )^./8W 4on 2. R5-R5.R5 8W 40208! S. P.6-R34.RSO-R57-270A. 3W APATOR F ETHROUGH FlTER (08J«! 0. R35- R48= 2K /8W 606 0*8. R49-00.H..3W 60! ALL DODE S<SN ' 3. 2ENER OKJDES-SN753A 40808*4 ' *22Q2<J OUTPUT 6 R6 LE LAMPD TO STAGE OT LAMPED TO STAGE OWN AS RESET P p R2 ND BM T2-2 Fgure 2-6. Swth Seletor Eletral Shemat Dagram (Sheet 2 of 2) 33/34

40 Seton H Logal operaton of an p nverter s as follows: An up level gated nput () and a down level base nput (A) auses the four PNP transstors to saturate. The low olletor to emtter mpedane of the transstors allows the up level gated nput to be seen at the output (B), resultng n an up level p output. All other nputs ause the transstor to have a hgh mpedane from olletor to emtter, mantanng the output of the p at a down level voltage. The p nverters are used n the AG sgnal generaton ruts, the deode matrx ruts, and the output matrx ruts. The p ruts are lassfed nto three groups due to modfaton n the output ruts of the p's. See Fgure 2-8. p Drver - A telemetry output s oupled to the output of the p drver. An up level p output wll result n an up level telemetry output. One 2K telemetry load resstor s assoated wth eah eght p drver ruts. The output of the p drver s lamped to stage ground through two seres dodes. The swth seletor output matrx s made up of ths type of nverter. p L Drver (undamped) - The p L nverter dffers from the p nverter n that t has no telemetry output and the seres lampng dodes have been removed. Ths type of nverter s used n the AG sgnal generaton rutry and as olumn sgnal drvers. p., p Drver - The!PLQ nverter dffers from the PL nverter n that the!pl nas keen modfed by nstallng a mrofarad apator n parallel wth the 2K resstor from the base to emtter of eah transstor. Ths apatane provdes a 300- mroseond delay at the output of the p L «These nverters are used n the AG sgnal generaton rutry and the automat reset rutry. A down level nput wll mantan the transstor n the OFF state and present a hgh-mpedane output or up level to the followng p rut. A Zener dode s provded on eah nput lne of the N to ensure the transstors reman OFF when the output of the AND gate s at the down level. The Zener dodes prevent the NPN transstors from beng turned ON by the voltage aross the dodes n the AND gate. Relays The Swth Seletor uses both lath and onventonal type relays. Table 2-4 lsts the Swth Seletor relay funtons. Lath Type - The lath type relay (see Fgure 2-20) has two relay ols, KS and KR, assoated wth a par of relay ontats, Kl- and Kl-2. The relay ontats are ontrolled through the medum of a magnet feld and operate n unson. A pulse of voltage, of suffent magntude and duraton, Gate nput o nput A nput B -* l6k NPN nverters ( N ) The N nverter uses four quad- redundant NPN transstors (see Fgure 2-9). Operaton of the nverter wll not be affeted by the malfunton of any detal part n the rut. The ^ nverter s preeeded by a quad- redundant AND rut and followed by an p nverter rut. The bas voltages for the JT nverters are obtaned from the p nverters whh they drve. Logal operaton of an N nverter s as follows: an up level nput from the AND gate appled to the bases of the NPN transstors wll ause them to ondut, lampng the output at ground or down level. Fgure 2-7. nput <^l6k -H- Four nput AND rut (A4) BM T22 35

41 Seton appled aross a relay ol wll ause the relay ontats to set or reset dependng upon whether the set (KLS) or reset (KR) ol s pulsed. The relay ontats wll reman n the set or reset poston after extaton s removed beause of the lath apablty of the relays. Transent suppressor dodes parallel the ols. The maxmum set and reset (pk and fall) tme for lath type relays s 6.5 mllseonds at hgh temperature ondtons (25 ). E Output onventonal Type - The onventonal relay (see Fgure 2-2) has a sngle relay ol (K2) assoated wth a par of relay ontats (K2- and K2-2). The par of relay ontats operate n unson. Extaton of the ol wll ause the ontats to lose; ontnued extaton s neessary for the ontats to reman losed. When the extaton s removed, the ontats wll return to the normally open poston. Transent suppressor dodes parallel the ols. The maxmum pk tme for the onventonal type relay s fve mllseonds, and the maxmum fall tme s 8 mllseonds at hgh temperature ondtons (25 ). Stage Ground Fgure 2-9. NPN nverter Shemat Dagram Base nput A o- 0=82 mf apators on p nverters only Telemetry Output Not Used on lpj_ and lp _ nverters >0K 2K > WNr -O Telemetry E Stage Ground BM T23 Fgure 2-8. PNP nverter Shemat Dagram 36

42 Seton n KS " HKl-l KR :R Kl-2 S - < K2- K2-2 K2 9 BM T26 Fgure 2-2. onventonal Relay Shemat Dagram BM T25 Fgure Lathng Relay Shemat Dagram Table 2-. Swth Seletor Relay Funtons Relay KS thru K8S KR thru K8R K9S thru K6S K9R thru K6R K7 K8 K9 ontats Kl-l, thru Kl-2 K8-, K8-2 Kl-l, Kl-2 thru K8-, K8-2 K9 thru K6 K9 thru K6 K7- K7-2 K8- K8-2 K9- K9-2 Funton Bt relay ontats - Used to store the flght ommand n the nput regster. Transfers ommand ode to the AG and deode rutry. Also apples power to the proper verfy relay ols allowng verfaton nformaton to be returned to the LVDA. These relays are magnet lath relays. Bt relay ontats are reset when KR through K8R ols are energzed, returnng the nput regster to ts reset ondton. When lath type relays K9S through K6S are energzed, the N verfy relay ontats, K9 through K6, are opened. Ths removes U +28 Vd from the verfaton lnes gong to the LVDA. Verfy relay reset relays. When the reset ols are energzed, the verfy ontats K9 through K6 return to ther N poston, applyng U +28 Vd to the verfaton lnes. Read ommand relay ontat K7- s of 4 sets of relay ontats whh lose when the read ommand s gven applyng stage +28 Vd to the AG rutry. One of the three read ommand relays - When the read ommand s gven, relay ontat K7-2 loses ntatng the automat reset yle. Read ommand relay - When energzed n onjunton wth K7 and K9, K8- and K8-2 apply stage +28 Vd to AG rutry. Read ommand relay - When energzed n onjunton wth K7 and K8, K9- apples stage +28 Vd to the AG rutry. Same as K

43 Seton Relay K20S K2S K22S K20R thru K22R K23 K24 ontats K20- K20-2 K2- K2-2 K22- K22-2 K20-, K20-2 thru K22-, K22-2 K23-, K23-2 K24- K24-2 Table 2-4. Swth Seletor Relay Funtons (ont) Not used Funton One of the four sets of relay ontats requred to omplete the sgnal return path for the nput relays (KS through K8S) and the read ommand relays. Energzed by the stage selet ommando Stage selet relay - K2- and K2-2 are two of the four sets of ontats requred to omplete the sgnal return path for the nput relays and the read ommand relays. Ths s a magnet lathng relay. Stage selet relay - One of the two sets of relay ontats whh, upon applaton of the stage selet ommand, apples U + 28 Vd to the verfy output relay ontats. Ths s a magnet lathng relay. One of the four sets of ontats whh, upon applaton of the stage selet ommand, ompletes the sgnal return path for the nput relays and the read ommand relays. Stage selet reset relays T - When K20R, K2R and K22R are energzed, the noted relay ontats return to ther normally open poston thereby removng the sgnal return path from the nput relays and read ommand relay; removes stage +28 Vd from the AG rutry; and nterrupts U +28 Vd to the verfy output relay ontats. Reset relay ol - Upon applaton of the reset ommand, stage +28 Vd s appled, va K23- and K23-2, to the nput relay reset ols and the stage selet relay reset ols. Verfy power relay - Ths relay s energzed upon losure of the stage selet ontats ompletng U sgnal return rut, and apples U +28 Vd to the verfy relay ontats and stage +28 Vd to the verfy relay ols. 2-5 REFERENE MATERAL Ths seton ontans referene materal whh wll prove helpful to personnel nvolved n trouble analyss of the Swth Seletor. Fgure 2-22 (sheet through sheet 6) s the omplete log dagram for the Swth Seletor. Fgures 2-23 through 2-38 are the eletral shemat dagrams for the 6 dfferent rut modules used n Model Swth Seletors. 38

44 Seton STAGE OMMON FRST _, SRTN ( ARST P9 BRTN p,o T K2 " 5 «", PS T K2^ P20 MR8 P2 ^434 J k *«4 - AA3VJJ ^ MR8 P27 ul "" P7 ARTN U t"' 2^ (6) AA L P * A ** P»l -p ^T^V 4 ' JEUory^, jg2rt=tm«l- ^ RB R»AA3 (A) 60434^ SRTN O E2A TP JpTo " n;! p. 2-8^-. l R R2;k R^f? 0 AA6^ L^fHj / P«VFV _^«J PX)^"*-'* ' [ AA5 (6), L» ^^. ^«J! pjavfy?.?r<j'! ^^'-T^" 0 " < AAA <^ ' AA9 ' R3 R5~JF,RST 0 T VERFATON E4? ' D vv J-n3_r. '» ' "* >J " J4 *>- ^ -AA6! _ R 5. "^SEOND DGT VERFATON E26^27 vv. u-s; " 7 o. -- AA ^f^7 o a AAM ' _ _J ^3., ^7 TH«P DGT VERF ATON "9.D _ R L' R ~ FOURTH DGT VWFATON f^ofjjd K3-± P P3 T TAAT (6~) ' 6K)434 n T"4,,,,^ "«^F'f'H O''T VERFATON?33A*,.,.,. STAGE.., xx E226J_ SEET ]pn ~ A" p». " K2S V P2 rrn. / \ K2R 4P22p=J4M V w PH, R8- R«AA4 (5) L R7 _^TR7 'Pll A P»J K2SV * JP2[ R4 A*'? u B 'DS R9AA a^rm *n M* ^ T f~". "~~. "~"~ "T" TlU*28VD. J -L, U»28VP T«_ ^HASSSRD f ^ * osqnal RETURN, " " T^ SjflAl. RETURN, A2A. 6082M4 RU RrSXTH 0QT VERFATON E ".D vv J -«u4' "* P3 T T*A(^ 6054 R ' R J? SEVENTH DGT VERFATON 3<>.D.,. h L }"4 mo^ 60563^ R?. R, 5 EHT DGT VERFATON ^9D ^,...,.. l, J, 7l6l " * JPS T "A/W (?) ' 60433; J WX J4 WX «E'«,D0 RESET Jl A J A «E«.D0U»2BVD. u «E24 K.JRET'URN PANEL AA 604(56 Fgure Swth Seletor Log Dagram (Sheet of 6) BM Drawng No. : Revson: D BMT27-; -39/40

45 Seton STAGE OMMON «^.^.J L Pl" ' ""Ro R o *-»H_R3J**«* ]P tro R2 ou; P^ R5 R J 9g»->HB 3 m*-*- P RO R M R5R6_ [ [O'U'3^ [ AA2 W " " R5R6 6Q564 ~«n*m M> ^RORZ. R6 t**l-h^ P ' 'RT) R3 J ' J AA >P0 *! 6054 ' P0 OU30* J-U.V. PANEt AA 60-W. Fgure Swth Seletor Log Dagram (Sheet 2 of 6) BM Drawng No.: Revson: D BM T27-2 4/42

46 Seton SSOM SSOM -E35J)-E9B PANEL AA o-tto BM Drawng No. : Revson: D BM T27-3 Fgure Swth Seletor Log Dagram (Sheet 3 of 6) 43/44

47 Seton 6043 E2BA.B.-O PANEL AA BM Drawng No. Revson: D Fgure Swth Seletor Log Dagram (Sheet 4 of 6) BM T /46

48 Seton ROW 7 NOT SATURN VEHLE ONTROLS PANEL /MA Fgure Swth Seletor Log Dagram (Sheet 5 of 6) BM Drawng No. Revson: D BM T /48

49 Seton n ROW 7 NOT NOTES:. ABBREVATONS ARE DEFNED N BM SPEFATON DENOTES NUMBER OF SHEETS PANEL APPEARS ON. 3. DENOTES NUMBER OF BLOKS MODULE S BROKEN -NTO. 4. ALL NPUT SGNALS ARE WRED NTERNALLY ON THE PANEL. SATURN VEHLE ONTSoU BM Drawng No. Revson: D BM T27-6 Fgure Swth Seletor Log Dagram (Sheet 6 of 6) 49/50

50 Seton OUTPUT B 5T//6E OMMON \ ( STAGE OMMON!5< sareo NPUT R:: R:t R:: R:: R»:: R:: R:: R: :LR ::R ::R : :R :R HR VR!.R ;: R:: R:: R:: R:: R:: R:: R:: R:: R:: R:: R:: R ::e ::» : :R ::R ::«: :R?:R : :R ::R : :R ::R :R ; :R ::» ::R ::R :LR : :R : :R ::n : :R ::R R -.R..R..R, &ft 0 HPUT3 R;: R,: R;»]; R] R;; ;;R ; ;B ; :B ; ;R ; R ;;B > 22 ATfO NPUT t /MtVr 2 &trff /vfvr B Al ff/ptv t S 2 Mfvr s AH Wft/r ' ' "~a_ l, 0 AS fuput a 22 ->20 STH6E OMMON NOTES flu. DODES ffk SN645 SEL red,uhless orhe/?tv/se SPEF/ED. Z flu RESSTORS HKE. 2SW, t / % 3 HLL TMNSsroKs ake SZNZZZZ UNLESS L06 DAGRAM RUTMOL MODULE TWE 20 ST OUTPUT KEF OESG- K3 - K44 flt - K32 Fgure Eletral Shemat, rut Module Type, Deode BM Drawng No.: 6043 Revson: BM T28 5/52

51 Seton v-q-ae /e/ XO j UH SS ffm Drawng No. Revson: D BMT29 Fgure Eletral Shemat, rut Module Type 2, Output Drver 53/54

52 Seton n RESET 9< R T 4 <" ^ft K K - \ 3 RESET 9 K- \ K-2 T READ 20 ; R2 SK "T 4 T T* 5 *T ; R3 ; R3 K-2 ( R ^ \ _L KM _L J_ K - 2 L T t j 7 KV2 K-2 8 STRAP KV K- STRAP 9 STAGE BT SGNAL STAGE K4 R4 STAGE K4 POWER < M" VW-< (+28 D) R8 no OHMS ; O 0 2. VERFY -) E 5 y f4 R5 20 J_ d^ 'K2-2 ' 2 K^ 9 ~r 3 ' " 2 J 6 5 f- K2LR 22 *' 6 O" T.,_ SA 2 ], R ' 4 n ',.... ^j..?"- [" y ^9 ^0^R ; K 3S? 5 2^ R BT V\A^ >5 RESET 200 OHMS STAGE.25W,±% OMMON 3 \ R2 FORED BT 270 OHMS 9. L R3 R5 0^r T K3 T ' 4 E R7 SGNAL,,..,, U.^^L^ fr8 RETURN 7 STAGE OMMON 4 R0 STAGE POWER s R 2! (+28V.D) V "o" VERFY NPUT 3 Ḻ \ ^^ R4 R4 _L l_^ R2! K2 ' 2 -R5 { J ;;R7 ' >K2-R ;; R6 ;: R8 ^ T. T P ' " \ f Rt> R4 *' 8 \. \ : R2 SK 35 > KR [ J R J_ J, R3 R5 BT 5 RESET FORED 2 RESET 2 OUTPUT 6 VERFY ovr DODE R7 DODE DODE R7 DODE M "J 2 (ANODE) REFERENE DESGNATON _ TEM' N0. R 6 R2- R4 5! K. 7 - K2.K3 8 NuT s-. ALL DODES ARE SN645 SELETED, UNLESS OTHERWSE SPEFED. BM Drawng No. : Revson: E BMT30 Fgure Eletral Shemat, rut Module Type 3, Read ' /56

53 Seton n ~ KZ- K2-2 saxr SGNAL RETURN STAGE OMMON 4 <- STAGE POWER <- (+28V D) 0 OUTPUT 4 / R ( 4 t* / \ VERFY NPUT 3 «- K9 x T j^t R4 270 OHHS. asu^v 6 > ez?** R2 ' R3 R6 t R7 r") S^S " 2 K2-2 7 ' - 7 " 20 SK2S 9 20 ; * w Jus tr^ j 3u *' H4 «r 270 OM 2J*5tfk 2 'f r^ «s 5» 9- R7 R5!» ^ ^7^ T T r < 2 J [ 22 }" #2, _wy^. 2 27D OHUS ;»«< ;»5? " 2 K2K 22 2! \» 4 VA 2000H*5.25 W /% r R3 W\ 200 OHMS R4 Ww 270 OHMS 2JV±5X :R8 R9?" R ; Rs KfST BT >22 RESET 2 FORED RESET *r -»2 OUTPUT OUT 57MF OMMOV e/r 6 P.ETURN (8 rz-f 9 KZ- W F~ 4- SGNAL RETURN»t STAGE OMMON STAGE POWER («28v D) ' o- R M *- T VERFY NPUT 3* OUTPUT JTPUT 4K- -W- UM T T w- <M K3 '.K2R R3 ; R8 : R9 t R3 RU JUT?5 RESET, FORED Jl2 RESET T 2 OUTPUT our T vesfr DODE RW M DODE -»2 (ANODE) R8 DODE REFERENE DESGNATON R-R9 TEM, NO 4 j Rl.n R2. R4, R5,R6 Kl.K2.KJ 6 5 : 7 NOTES'- AL DODES ARE SN645 SELETED MESS OTHERWSE SPEFED BM Drawng No. Revson: D Fgure Eletral Shemat, rut Module Type 4, Stage Selet 57/58

54 Seton n H -: 2 H ARSTN /2-e '2. ARSTN ST 77 <r ±2 ;b,=r =, :f U^f KPF 9^ :24^ 23 5T TEM fjo OMMON R-R4 ffs~ RT\-RT4 /-26 S R.2 SR3 MOOHMS 680 OHMS,/2SW,/%.!2SlVtl% R4 R3 0 M 0 "0 A/Or : ffll flpflroks flfff.82 UF. SOW. */0% UNLESS OTHERWSE Sf> FE[t. DH DH VPRSR/ /VPRSR R5 0O OHMS 2.5 W, ±5% R5 S SRTN LOG DRGRftM - RUT MODULE TYPE NO. S BM Drawng No Revson: E BM T32 Fgure Eletral Shemat, rut Module Type 5, Auto Reset 59/60

55 Seton n 57R6E POWER (tzv) 3 ROW 00 NOT O 2 REFERENE DESGNATON R THRU R86 0 THRU Q20 02 THRU 024 R,2,7,8,9,0,S,6.7,8.23, 24,25,26JU23a R 3.4,5.6,.2. 3,4,9.202,22 27,28,29,30,3S,36,37,t38 R4 THRU R48 R49 THRU R52 VR THRU VR4 TEM NO NOTES f/6t nor B7 ALL RESSTORS AKE.25W±% UNLESS OTHERWSE SPEFED. ALL DODES ARE SN645 SEL ETED, UNLESS OTHERWSE SPEFED ALL ZENER DODES ARE SN753A SELETED, UNLESS OTHERWSE SPEFED ALL TRANSSTORS ARE SM2929 UNLESS OTHERWSE SPEFED 5 ROW 00 NOT BM Drawng No.: Revson: D BM T33 Fgure Eletral Shemat, rut Module Type 6, AND Log 6/62

56 Seton n (+28 VOLTS) BM Drawng No. Revson: Fgure Eletral Shemat, rut Module Type, Deode BM T34 63/64

57 Seton H (Z8YD)3 BASE NPUT 2 ; V P L 2 OUTPUT BASE NPUT 4 V P 3 OUTPUT BASE NPUT 5 k V P L 4 OUTPUT BASE NPUT 6 EASE NPUT 7 V P L V P L, 5 OUTPUT *6TEST PONT BASE NPUTS e V P J 8 OUTPUT 7 STAGE OMMON ATED NPUT 9 BASE WPUT 9 V P 20 OUTPUT GATEDNPUT0 BASE NPUT P -3)22 OUTPUT SGNHL RETURN OH srase OMMON REFERENE DESGNATONS R THRU RS2 TEM NO. 7 0 THRU R5 S RS >2K Rl THRU R6 R33THRU R4S R7 THRU R32 R49 THRU R S 5 NOTES' All DODES SH6S S LTeD,UNeSS HTHE/tHSf SffFD 2 ALL TRANSSTORS S2/V L ra> M.KS athffwasfk/fd 3 AU RESSTORS.25 WATT. ±% UNLESS OTHERWSE SPEFED 2 BM Drawng No.: Revson: D BMT35 Fgure Eletral Shemat, rut Module Type 8, Msellaneous Drver 65/66

58 Seton n ^ a OUTPUT t TEST /VNT S OUTPUT 5TO6E OMHXN REFERENE XSGNflTOHS K THRU K2O l THRU 7 Qf THRU Q36 #/ rvfl//f/6,m7.k6s K33 THKU K48.RT.mZ KH THKU #32. K-tl THKU fte.4 Rt?,K70.K73.f7-> #&f. ft,& TEM NO & s- s- f 9 NOTES: /. /LL DODES SNUS SELETED UNtSS OTH KW/S SPEFED. 2 BU. tf/mssmte S2/t2)n SELETED UKLES ew&nwsf SP Of/!>. 3./LL Kfss rats. zf tvarr, */% UNLESS ome/nv/se spejf/eo. 4 HLL APtmte.S2UF,±5% Vf/LfSS OTH KtVK Sf lf/ep.. BM Drawng No.: Revson: B Fgure 2-3. Eletral Shemat, rut Module Type 9, Msellaneous Drver BMT36 67/68

59 Seton K- K- RESET 94- READ 20*- RETURN0*- R W- O 2 -R2 : R3? K R5 200 OHMS o EA ^.X T * T 4; F- 82 J F T - S'/o L r.82uf ±5 /o K-2 2 KV2 K-2 STRAP K- RESET 9 READ 20 RETURN R M- ;; R2 ;; R3 KM :2 R5 K-2 T 7 KV2 K-2 STRAP KM STRAP 9«. ±5 /o K- STRAP 9 :f3 STAGE OMMON 3 <- BT NPUT 6<- R4 SGNAL RETURN 7<~ STAGE OMMON 4*- R4 O R6 JTlZL 3, K2-.,2 5" 4 Tn 2 22 P. 200 OHA/S,25W,±% R2 -AAAv 270 OHMS 2.5W/S% ;; R7 ;;R8 BT >5 RESET FORED >2 RESET STAGE OMMON 3 BT NPUT 6 SGVfl. RETURN 7 STAGE OMMON 4 -W- R4 R6 >K2S K2- T? R R2 ;; R7 ;; R8 BT 5 RESET FORED 2 RESET STAGE POWER <- (+ 28 D) /?/6 -w- ^AV RB O E T no ^?,R9 (!) '"" 9 K3S o OUTPUT4<- ^WV- 2^? OHMS fhffs% U K K3R O ;; R0 ;; R2 T OUTPUT R3 R5 our STAGE POWER (+28V D) 0 OUTPUT 4 K8 R4 ;;R >K3S R3 >K3R K3 -Vr- R3 ;; R0 \\ R2 ' R5 2 OUTPUT 76 VERFY ot/r VERFY NPUT 3<r- VERFY NPUT DODE (ATHOD022e R7 M DODE, ->2 (ANODE) DODE.. (ATHODE)22t R7 DODE 2 (ANODE) REFERENE DESGNATON R- R8 TEM NO. 4 R.R5 R2- R4 K K2.K3,2, ZO NOTES'. ALL DODES ARE SN645 SELETED, UNLESS OTHERWSE SPEFED. BM Drawng No.: Revson: B BM T37 Fgure Eletral Shemat. rut Module Type 0, Read 69/70

60 Seton n K- <- QH20 K- RESET 9«- READ 20<- R w- Kl-2 RESET READ 20 9K R M- 7 K-2 R2 K RETURN K- ( ; R3 /9 Kl-2 STRAP RETURN 0 R3 K-2 8 STRAP K- STRAP 9< KM STRAP 9 STAGE OMMON3* BT NPUT 6<r f U R4 u R4 SGNAL RETURN 7< STAGE OMMON 4 VERFY NPUT 3<- t P f5 20 u : R5 < >K2S R6 0«<**./ ") 9 STAGE POWER /* M A.AA. (+28 D) >?;«70 (3//WS ; :R9 zsv, -'^r. ;RH 6 "0' 27 OUTPUT K 3S 3, 6 L n K2 R3 WV ZT )OH, ^5 ZStffSK 5 f L_ KM L ^2 5 ^. p 4 * ~\ TL" 5 (?^ 2 < >K2-R 2 22 SK3R 22. R 200 OHMS.25W,l% R2 270 OHMS 2.5W;5% ; R? : R8?? ; R0 S R 2 * > * R3 R5 BT 5 RESET FORED 2 RESET '. OUTPUT VERFY our STAGE OMMON 3p BT NPUT 6 SGNAL RETURN 7 STAGE OMMON 4 STAGE POWER +28V D) VERFY NPUT 3 F, R4 -W W ' -R4 K(, K8 R4 SR5 R6 SK2S ;R9 J SK 35 ;R [ J _ r ^ ' K2 K2 - /?. 9 K3.J ZJ U - OUTPUT 4k- ^r L -. < >K2-R [ ] M R3 R 5 R. : R2 f R2 ( R7 : R8 ; RO BT 5 RESET FORED *\2 RESET 2 OUTPUT /6 VERFY our DODE (ATHODE)22e R 7 M >2 DODE (ANODE) DODE (ATHOD022 R7 4 DODE 2 (ANODE) REFERENE DESGNATON R- R8 TEM NO. 4 R.R5 R2 - R4 K K2.K NOTES'. ALL DODES ARE SN645 SELETED, UNLESS OTHERWSE SPEFED. BM Drawng No. Revson: A 6054 BM T38 Fgure Eletral Shemat, rut Module Type, Read 7/72

61 Seton n snenmfra) t oast NPUT z ^^ a ft ry «. OUTPUT s BKf HOVT 4 ~** ft V PL? 3 OUTPUT ^. B*Sf MPUT S (. * \ ft V PL OUTPUT BOSf NPUT ^ ^t ft V PL > - * a OUTPUT e/kffffor 7 J* s - ft V PL ~3 t TEST PONT x ftdsf NPUT 8 * V P \ te ^ S OUTPUT ^ n snseammt s use NPUT 9 v ft. V PL O OUTTVT a/kf HH/T n ^ PL..^ x OUTPUT ; L PL REFERENE fskhftohs R THRU R2O l THRU, 6_ Ql THRU O3*, /?/ THRU K/t Xtl.RtS #33 THKV f4b.k7l.fm #7 rhxu K3 #4 THKU #64 f*f?,#70.#73.f?4. K6S". #64 TEM MO & f s- * NOTES: /. ALL O/OOfS SM64S SELTD UWfSS OTHBWSf SP lflo>. t /LL muestok szn2)<n safofo UNLESS mexvsf speaft t>. sou xfsan*s./zfmtt,t% OHLfssomE/wtsf steateo. 4. HLL OWKlTOKS.82 UF,tT>k-VHLtSS 0m XM»S BM Drawng No.: Revson: A Fgure Eletral Shemat, rut Module Type 2, Msellaneous Drver 73/74

62 Seton n Kl-l 7<- RESET 9< R READ ek *- O ;;RZ &> >» zp - O 3 tf -» T M-Z. -» 6 Kl-Z. <\-Z ->2> STRAP Kl-l 7 f RESET READ ZO RETURN 0 Rl W- 3: ORE. j;r3 LT ^ ^?! STRAP Kl-l STRAP f><- Kl-l STRAP S 5TAGE OMMON ff 84 BT SlGMAU RETURN 7 4 STAGE POWER * "O' OUTPUT 4< 44 ) R^ JR4- RQ, RB E2 t t \ Z7O OHMS ; ; = : ") E5 P^ ") El^ ;w ;R\ P < 5 O K35 J ->.-2 3 u ~ A rj K2 r 4 _.» Z~K50UJ>J5 & r _~? ^ > /O * 5 / r 5 < >K2-R 3Z 8 J Z ")E4 9 a 4 J Rl EOOOUM5.25\^ j4 37OOUKAS RT ;R& ; RO ; Re fe BT RESET FRED RESET OUTPUT ->l& \)ERlP^ our STAGE OMMON laf- BT 0PUT RtTURM»7 5TASE. OKAMOW4 STAfeE POXWER (+ZSVD) OUTPUT 4r < m * R4 L M Rltb R4 2 *R >K3R -w w- R\3 Rlb ; R6 ::R FORE.O e RESET»,. ^ E OUTPUT ^l& VJERlFV OUT VERFV NPUT DODE: R7 M ^ DODE -»3 AMOOE) UERlFV UEWFY MPUT OlOOE. l 3f R7 DODE (AMOOE.') RFERENX.E. R-Re> TEM MO. 4. P. R^-Rd- K. K.Z.W2. fe & 7 &. &LL. DODES ARE SELETED, UtOLE-SS SPEFED. BM Drawng No. Revson: A BMT40 Fgure Eletral Shemat, rut Module Type 3, Read 75/76

63 Seton n n O E2 ~TT o< T 200 OHMS R5 R5 ' 8K-2 7 M- RJ 20 EA f f\ -. f\ - J x * :; R2 JK T T -T + V F "Q_4_J ;;R3 9 - ±5% + 2 KM RT r * ' J_ K -2 L ;: R3 r T J_K-7 L ^ K- 8 STRAP UF ~ ±5% K-2 " K '- 2 :3 R BT STAGE WV >5 200 OHMS RESET STAGE BT 5 RESET BT R4 20 L-L L_L R2 FORED BT R4 ;;R5 3 K2 ' OHMS ' 2 J 2.5W,±5% 6 5 -; R 6 ~<; R7 SGNAL x L K2- L^ S/NAL RETURN 7< * ^ 4 J., HR8 RETURN 7 STAGE 22 STAGE K2 R R O" oo O E '», 76 T -*? 2 T 7 r~> r,n 27O OHMS ( ) E9 5ru/+Ty - - r ft n STAGE R4T 20 ^5W,-5 / -,LK O ^^ (+28 D) R8 270 JR2 ' (+26V D) OHMS_ K- R9 J *" ' Q arr- 22 "0" f J_ L R3 R5! OUT *o" R4 _L _L k»t w ",, '' > R4 K 2-2 L R6 R8 R4 KR LK2-,_ ~P '~ l R3 t / ;; R7 R2 FORED. 5 2 RESET ;; R8 ;; Ro ;; R2, ^ R3 R 5 2 OUTPUT 6 VRFY OUT VERFY 4 DODE R7 DODE, DODE REFERENE TEM DESGNATON ' NO R7-R8 4 VERFY R7. _J DODE 2 (ANODE) R.R5 6 NOTES'. R2-R4.5, ALL DODES ARE SN645 SELETED, UNLESS OTHERWSE K 7 SPE FED. K2,K O BM Drawng No. : Revson: "None" BM T4 Fgure Eletral Shemat, rut Module Type 4, Read 77/78

64 Seton n } OUTPUT t TEST font OUTFVT Srxf OMMON OUTPUT. ffu otaofs smes seureo UNSS omenmsf t RU nmns/srog sw/n seartd UHLSS tmjtwsf sreaaee. 3, an xesarvrs.asmrr,*!'/. VHL&S ometwae st-aned.. OL OlffKlTORS.62 OF, tsv. UHUS OTHOMKE SfKlflP. Fgure Eletral Shemat, rut Module Type 5, Deode Drawng No.; Revson: A BM T42 79/80

65 Seton STAGE /3e OMMON RETURN K2-Z 8<- K2- /?< K2-0 < K2-2 saer SGNAL RETURN 9<- STAGE OMMON 4 <- STAGE POWER <- OUTPUT 4 <- VERFY NPUT 3 <r- :/?/6 R 9«'. : R2 :R SKS ^ f 9 «T s 2 T T K2 -' K2-2 ul_ y _ L _U Uv/y T ^T T. ~ /?5 ; K4 270 OHMS. -J ff ^ o EZ R7 Q«/ J ") 8 RO R2 20 J 9 20 s ]SK 3S ( 9 l 6 l_, K'-2, KG Kl-l,_ 4 27? OHMS 6 5 ^ 9" 2 7^ f \ Kl vw ZOO OHMS.2SW U% K OHMS. ff4 J 2.5W*S% \ar RS ) 22 2 ^K2R t R3 ] R9 200 OHMS R4 A laaj 270 OHMS 2.5 V ±5% ; RS 0" < E R ] R3 f» *J " ^ "-L- K3 T 4 BT >22 RESET 2 R7 R5 OUT FORED RESET T 2 OUTPUT OMMON 4 BT 6 RETURN (8 K2-Z 7 KZ- 9 K2- Wfe K2-Z STAGE SGNAL RETURN STAGE OMMON 4 STAGE POWER (+28V D) OUTPUT 4 F L r? f VERFY NPUT 3k- ** K/6 R a/9 H J_K2 'TL, 5 m K/4 [ ~4 RS > R2 : R3 ^KS T ~L. ; "' ' K7 r 4 ;Rto R2 [ J SK3 '^ S s u 2 7- L- l *6 7T j t < >K2R K3R LR5 J. r 4 \ ' R3 : RB ; R9 R4 ' RU ; R3 fl u 'A R7 R S ^ j s BT BT 22 RESET FORED RESET "" 2 OUTPUT VERFY OUT DODE (ATHODE)204- R 8 M DODE 2 (ANODE) DODE (ATHODE) 20 L R8 DODE (ANODE) REFERENE DESGNATON R-R9 TEM NO 4 R,(?3 R2, R4, RS,R6 K,K2,K NOTES'- ALL DODES ARE SN645 SELETED UNLESS OTHERWSE SPEFED BM Drawng No.: Revson: "None" Fgure Eletral Shemat, rut Module Type 6. Stage Selet 8/82

66 Seton n SETON PREPARATON FOR USE AND SHPMENT 3- PREPARATON FOR USE To remove the Swth Seletor from ts shppng ontaner proeed as follows: AUfjpNJ Ths s a reusable shppng ontaner. Therefore, use are durng the unpakng proedure to ensure the ontaner s not damaged. a. Slt tape on outer arton, and open arton. b. ut overwrap and mosture-vaporproof barrer bag so that the top of the nner arton s exposed.. Slt tape on nner arton, and open arton. d. hek humdty ndator. The humdty ndator has three blue ndators, graduated to ndate thrty, forty, and seventy perent humdty. These ndators wll turn pnk when ther respetve perent of humdty has been reahed. f the seventy perent ndator has turned pnk, t s reommended that the Swth Seletor be returned to the laboratory for nspeton and testng. e. Remove the taped fberboard from around the Swth Seletor. f. Lft Swth Seletor and plywood base from nner artons. g. Remove the -nh, /4-20, soket-head ap srews seurng the Swth Seletor to the plywood base. h. Unbolt Swth Seletor from plywood base and remove Swth Seletor from plywood base.. Plae all parts of the shppng ontaner, wth the exepton of the paper overwrap and mosturevaporproof barrer bag, n the outer arton of the shppng ontaner and retan. Dsard the paper overwrap and mosture-vaporproof barrer bag. j. Vsually nspet the Swth Seletor for physal damage and orroson. k. Remove dust overs and vsually nspet the onnetors for physal damage and orroson. Replae dust overs untl unt s ready for use. 3-2 PREPARATON FOR SHPMENT 3-3 PAKAGNG The Swth Seletor shall be pakaged n aordane wth Method LA-4 or Method n of Mltary Spefaton ML-P-6. Determnaton of whether to use Method LA-4 or Method s dependent upon the degree of proteton requred. Method n s to be used for loal shpments when there wll be no storage requred. Method LA-4 shall be used for all other ases. tems through 4, of Fgure 3-, are requred to pakage per Method n. Proeed as follows:.a. Bolt Swth Seletor to plywood base usng /4-20 x -nh, soket-head ap srews. b. nstall dust overs on onnetors.. Plae polyurethane pad on the bottom of the nner arton. d. Wth Swth Seletor seured, plae plywood base on top of polyurethane pad. e. Plae taped fberboard around Swth Seletor. f. Seal arton usng pressure senstve tape. Exept for markngs, ths ompletes the pakagng proedure for Method H. f Method LA-4 83

67 Seton n s to be used, omplete steps a. through f. and proeed wth step g. Method A-4 requres tems through 8 of Fgure 3-. g. Blunt orners of nner.arton to prevent damage to barrer bag. h. Plae nner arton n barrer bag.. Plae humdty ndator on top of nner arton, nsde the barrer bag. When the barrer bag s sealed, the humdty ndator wll be between the nner arton and the barrer bag. j. Heat seal the barrer bag when pakagng a qualfed Swth Seletor. When pakagng a defetve unt, the barrer bag may be sealed wth waterproof tape. k> Overwrap the barrer bag wth wrappng paper. Hold wrappng paper n plae wth pressure senstve tape.. Apply a Method A-4 proess label on top of the wrapped nner arton. Reord pakagng data on label. m. Plae a Hand-pad ushon at eah orner of the wrapped nner arton and plae nner arton n outer arton. n. Seal outer arton wth 3-nh Kraft tape. 3-4 MARKNG Markngs ontanng the followng nformaton shall be appled to the Swth Seletor shppng ontaner as follows: Method A Swth Seletor pakaged per Method shall have the followng markngs appled to the snppng ontaner: a. Prnt or stamp omponent part number on the taped fberboard. b. Prnt or stamp the followng nformaton on the top and both ends of arton: MSF Number tem Desrpton Quantty ontrat Number Level of Preservaton and Date Seral Number. Apply a Fragle label (BM Part No ) to both ends of arton. Method A-4 The markng to be appled to a Method A-4 shppng ontaner s as follows: a. Prnt or stamp omponent part number on taped fberboard. b. Apply markngs ontanng the followng nformaton to the top of the nner arton. These markngs shall be vsble when nner arton s plaed n the barrer bag. MSF Number tem Desrpton Quantty ontrat Number Level of Preservaton and Date Seral Number. Apply the same markngs appled n step b. to the paper overwrap overng the nner arton. Thes markngs shall be vsble when the nner arton s plaed n the outer arton. d. Apply the same markng appled n step b. to the top and both ends of outer arton. e. Apply a Fragle label (BM Part No ) to both ends of outer arton. 84

68 Seton D METHOD m Taped Fberboard Materal: "TWB" flute orrugated berboard. 275 b. test, per PPP-F-320, type F, lass Dora. BM Drawng No Dmensons: Length: 6.5 nhes Wdth: 0.5 nhes Heght: 6.0 nhes 2 Plywood Base Materal: /2 nh plywood per NN-P-55, type m, lass. BM Drawng No Dmensons: See detal drawng. 3 Polyurethane Pad Materal: Polyurethane foam ushonng, 4 bs/u ft densty, per ML-P-2654, type, lass H BM Drawng No Dmensons: Length: nhes Wdth:.375 nhes Thkness: 0.5 nhes 4 arton Materal: "TWB" flute, 275 to. test, per PPP-B-636, type, lass Style: RS BM Drawng No nsde Dmensons: Length: 7.5 nhes Wdth:.5 nhes Heght: 7.0 nhes METHOD A-4 omplete tems through 4, then ontnue wth tem H 5 Water-vaporproof Barrer Bag Materal: ML-B-7, type, lass E Style: Envelope BM Drawng No Dmensons: 3.75 X nhes H (o; X3 ao.375 ( Overwrap Materal: ML-B-2, grade A wrappng paper BM Drawng No Dmensons: As requred 7 Shok ushons Materal: Hard-pad ushonng, ML-P type, lass n BM Drawng No f,. ' MA. HOLES. 4 REQURED. MOUNT /4-20 TEE NUTS TO BASE OF PLYWOOD. ENTER TEE NUT N EAH HOLE. g arton Materal: "TWB" flute orrugated fberboard. 275 b. test, PPP-B-636, type, lass. Style: RS BM Drawng No nsde Dmensons: Length: nhes Wdth: 4.25 nhes BM T44 Fgure 3-. Pakagng nstrutons for Swth Seletor Mod 85/86

69 Seton V SETON V PREVENTVE MANTENANE AND REPAR 4- PREVENTVE MANTENANE (Not Applable) 4-2 REPAR All repars to the Swth Seletor wll be aomplshed by omponent replaement. f falure analyss determnes repar s possble, the omponent shall be returned to the manufaturer for repar. 87/88

70 Spae Systems enter Huntsvlle, Alabama Prll 8$ s USA