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1 HP Archive This vintage Hewlett Packard document was preserved and distributed by www. hparchive.com Please visit us on the web! On-line curator: John Miles, KE5FX

2 m HEWLETT OPERATING AND SERVICE MANUAL MODEL 08A OPTION K AM DETECTOR FILTER How To Use This Manual This Manual should be used in conjunction with the 08A Operating Manual, HP Part Number (printed March 988), and the 08A Reference Manual, HP Part Number (printed June 988). Applicable Serial Numbers This Manual Modification Insert applies to instruments with serial number prefixes greater that or equal to 80A. Updates to this Manual Insert Periodically, changes are made to this Manual Insert to correct errors in the original printing and to include Option improvements. Corrections are indicated by a mark at the right-hand edge of the modified test. The mark used is keyed to the date the corrections are added (found on this cover page below the issue date). Manual Modification Inset Issued November 988 HP Part Number Updated June 989 East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

3 m HEWLETT 08A Option K Page of SECTION I. GENERAL -. INTRODUCTION INFORMATION This manual contains information required to install, operate, and service the Hewlett-Packard Model 08A Option K AM Detector Filter, an optional accessory for the HP 08A Phase Noise Measurement System. The AM Detector Filter Operating and Service Manual has five sections. The subjects addressed are: SECTION I SECTION II SECTION III SECTION IV SECTION V -. SPECIFICATIONS GENERAL INFORMATION OPERATION PERFORMANCE TESTS REPLACEABLE PARTS SERVICE Instrument specifications are listed in Table -. These specifications are the performance standards or limits against which the instrument may be tested. Characteristics MAXIMUM INPUT DC FLATNESS Table -. Specifications Performance Limits +/-5 V +/ db Conditions Hz to 0 MHz East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

4 m HEWLETT 08A Option K Page of ] -. DESCRIPTION The HP Model 08A Option K AM Detector Filter is an accessory to the HP 08A Phase Noise Measurement System. It contains a DC return for an AM detector, such as the HP 0C/D, and a DC blocking capacitor. The insertion loss of the AM Detector Filter is typically less than.5 db. The switch on the front cover can be set for either positive or negative AM detector polarity. -. INITIAL INSPECTION Inspect the shipping container. If the container and/or packing material is damaged, it should be kept until the contents of the shipment have been checked mechanically and electrically. If there is mechanical damage or if the instrument does not pass the performance tests, notify the nearest Hewlett-Packard office. Keep the damaged shipping materials (if any) for inspection by the'carrier and a Hewlett-Packard representative. -5. ACCESSORIES The accessories supplied with the HP 08A Opt. K are listed below: IMPEDANCE MATCHING NETWORK CALIBRATION LOAD CALIBRATION CABLES () ADAPTOR SMA(F) TO SMC(F) () ADAPTOR SMA(M) TO SMC(F) () East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

5 Efm HFWI FTT 08A Pt,0n K npm tfrrcirflz KM p f j SECTION II. OPERATION -. APPLICATIONS An AM noise measurement can be made with a HP 08A as described in 'AM Noise Using an HP 0C on page - of the HP 08A Phase Noise Measurement System Operating Manual. The HP 08A Opt. K AM Detector Filter is substituted for the filter network described in Table -, and shown schematically in Figure CONNECTIONS To setup the equipment for an AM Noise Measurement with the HP 08A and AM Detector Filter, refer to Figure -. The best results will be obtained when semi-rigid coaxial cables are used to connect the components used in the measurement and should be used whenever possible. Ground loops can be a problem in this type of measurement. To minimize ground loops, a DC Block is inserted between the RF source under test and the AM detector. The recommended DC Block is the Narda 56 (Type-N connectors, 0 MHz to. GHz) or the Narda 56 (SMA connectors, 500 MHz to 8 GHz). DC Blocks may also be referred to as Audio Interface Suppressors or Noise Suppressors. A ground loop can be suspected if the 60 Hz spurs have an amplitude greater than -80 dbc. Connect the AM detector directly to the input connector of the HP 08A Opt. K AM Detector Filter. The output of the AM Detector Filter should be connected directly to the HP 88A Phase Noise Interface front-panel 'NOISE INPUT' connector. However, if a DC Block is inserted between the RF source under test and the AM detector, it is not necessary to connect the output of the AM Detector Filter to the 'NOISE INPUT' of the HP 88A. A short semi-rigid cable will be sufficient to make this connection if a DC Block is used. To connect the AM Detector Filter directly to the 'NOISE INPUT', connect a N(m) to SMA(m) adaptor (HP part number 50-99, one is supplied with the HP 08A as part of the Noise Floor Fixture, HP part number ) to the HP 88A 'NOISE INPUT'. Then connect a SMA(m) to SMA(f) right angle adaptor (HP part number 50-9) to the N(m) to SMA(m) adaptor and the HP 08A Opt. K AM Detector Filter output. East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

6 m HEWLETT 08A Option K Page 5 of HP 56A DYNAMIC SIGNAL ANALYZER HP I88A PHASE NOISE INTERFACE HP 08A OPT. K AM DETECTOR FILTER HP 0C/D COAXIAL CRYSTAL DETECTOR FIGURE -. SETUP FOR AM NOISE MEASUREMENT WITH HP 08A East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

7 tma HEWLETT 08A Option K Page 6 of SECTION III. PERFORMANCE TESTS -. INTRODUCTION The procedures in this section test the instrument's electrical performance using the specifications of Table - as performance standards. All tests are performed without accessing the interior of the instrument. NOTE For greatest accuracy, allow the test equipment to warm up at least one-half hour. -. PERFORMANCE TEST RESULTS Results of the performance tests may be tabulated in the Test Results Tables at the end of each procedure. The Test Results Tables list all of the tests specifications and acceptable limits. The results recorded at incoming inspection, can be used for comparison in periodic maintenance, troubleshooting, and after repairs. -. CALIBRATION CYCLE This instrument requires periodic verification of performance. Depending on the use and environmental conditions, the instrument should be checked using the following performance test at least once every year. -. SPECIAL EQUIPMENT A Calibration Load and Impedance Matching Network are required to run these Performance Tests. One of each is supplied with the HP 08A Opt. K AM Detector Filter. Service information on these devices and an easy method to build replacements if the originals are lost or damaged are given starting on page 6 of this manual. -5. PERFORMANCE TESTING No abbreviation of the performance testing is recommended. East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

8 WKS% HEWLETT \L'HM 08A Option K Page 7 of PERFORMANCE TEST 00 KHZ TO 0 MHZ FLATNESS TEST DESCRIPTION This test measures the flatness of the HP 08A Opt. K AM Detector Filter from 00 khz to 0 MHz with a HP 585A/B. A reference is taken with the HP 585A/B tracking generator connected by a short cable to the impedance matching network and calibration load. The calibration load output is connected to the 50 ohm input of the HP 585A/B with a short cable. Once the reference trace is measured and stored in the HP 585A/B memory, the reference load is replaced with the device under test (DUT). The results are then measured and recorded in Table -. EQUIPMENT SPECTRUM ANALYZER HP 585A/B IMPEDANCE MATCHING NETWORK CALIBRATION LOAD CALIBRATION CABLES () PROCEDURE. Connect the equipment up as shown in Figure -. HP 585A/B SPECTRUM ANALYZER HWOONG t»>o»u-iroo FIGURE -. SETUP FOR REFERENCE MEASUREMENT WITH HP 585A/B East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

9 tvi HEWLETT 08A Option K Page 8 of. Press the green [INSTR PRESET] key on the HP 585A/B.. Setup the HP 585A/B as follows: START FREQ STOP FREQ db/div REFERENCE LEVEL AUTO RANGE 00 khz 0 MHz db -0 dbm OFF. The trace should be in the upper half of the HP 585A/B display. If the trace looks good, press the [STORE A -> B] key on the HP 585A/B. 5. Press the [A-B] key on the HP 585A/B to activate the trace. 6. Turn off the B trace by pressing the [VIEW B] key on the HP 585A/B. There should only be one trace on the HP 585A/B CRT and it should be a straight line in the middle of the screen. 7. Replace the Calibration Load with the Opt. K AM Detector Filter as shown in Figure -. HP 585A/B SPECTRUM ANALYZER HP 00*8-60 IMPEDANCE MATCHING NEW** HP 00*8-607 CAUBOATON CAfllf MP08A OPT. K AM D6TECTOR FILTER FIGURE -. SETUP FOR FLATNESS TEST WITH HP 585A/B. East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

10 What HEWLETT ml'hm 08A Option K Page 9 of 8. Set the 'DETECTOR POLARITY' switch on the HP 08A Opt. K AM Detector Filter to the 'POS' position. 9. Use the rotory knob on the HP 585A/B to position the cursor within 700 Hz of the frequencies listed in Table -. Record the cursor level under the 'POS DETECTOR POLARITY' in Table Set the 'DETECTOR POLARITY' switch to the 'NEC position and repeat Step 9. Record the results under 'NEG DETECTOR POLARITY' in Table -. TABLE -. FLATNESS TEST RESULTS FROM 00 khz TO 0 MHz MEASURED RESULTS FREQ (MHz) POS DETECTOR POLARITY LEVEL LOWER LIMIT UPPER LIMIT NEG DETECTOR POLARITY LEVEL LOWER LIMIT UPPER LIMIT East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

11 What HEWLETT MlfnM 08A Option K Page 0 of PERFORMANCE TEST, HZ TO 0 HZ FLATNESS TEST DESCRIPTION This test measures the flatness of the HP 08A Opt. K from. Hz to 0 Hz with a HP 56A. A reference is taken with the HP 56A Noise Source (rear panel) connected with a BNC cable to the impedance matching network and calibration load. The calibration load output is connected to the HP 56A input through a 50 ohm feed-thru with a short cable. After the reference trace is measured and stored in the HP 56A's memory, the reference load is replaced with the device under test (DUT). The results are measured and recorded in Table -. EQUIPMENT SPECTRUM ANALYZER HP 56A IMPEDANCE MATCHING NETWORK CALIBRATION LOAD CALIBRATION CABLE () OHM FEEDTHRU HP 000C BNC CABLE BNC ADAPTOR PROCEDURE. Connect the equipment as shown in Figure -. HP S6IA DYNAMIC SGNAL ANALYZER -OCA MXK 0UTWW*«I K K M BWCCABtf / BNC MWttn. ~~ o- M TWO- NG \ " -»H < -.- CKIOAO FIGURE -. SETUP FOR REFERENCE MEASUREMENT WITH HP 56A East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

12 m HEWLETT 08A pti n K r,«rc(7rriz Page of. Press the green [PRESET] key on the HP 56A.. Setup the HP 56A as follows: FORMAT FREQ WINDOW SOURCE RANGE INPUT START SINGLE START 0 Hz 0 Hz SPAN FREQ AXIS to log UNIFORM PERIODIC NOISE 0 db ATTN AUTO RNG off perform SINGLE AUTO RNG RMS AVGS start a measurement sweep. Wait for the HP 56A to complete the sweep of averages and then continue the setup of the HP 56A as follows: VERT SCALE STORE/RECALL DEFINE TRACE VERT SCALE 5. The trace should be a straight line in the center of the HP 56A display. SINGLE AUTO SCL STORE IN Ml MATH FCN SELECT MAG / Ml perform SINGLE AUTO SCL dbv FULL SCALE 6. Replace the Calibration Load with the AM Detector Filter as shown in Figure - and set the 'DETECTOR POLARITY' switch to the 'POS' position. 7. Press the [START] key on the HP 56A and wait for the HP 56A to complete the measurement. 8. Position the HP 56A marker to each of the frequencies listed in Table - by pressing [MKR], (DEFINE MKR POS), frequency to be measured (in hertz), and (Hz) on the HP 56A. Record the marker level for each frequency under 'POS DETECTOR POLARITY' in Table -. East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

13 m HEWLETT 08A Option K Page of 9. Set the 'DETECTOR POLARITY' switch to the 'NEC position. Repeat Steps 7 and 8. Record the results under 'NEG DETECTOR POLARITY' in Table -. HP 56A DYNAMIC SIGNAL ANALYZER f*xt SOURCE OUT PUU HEAP) BNCCABlf BCO-B0 " B«ADAPTER «0-O0M HP W0B-J0 «*PtD*MC MATCH* UtTWiCfl" * " CAIORA'CN CADU MP»8A OPT. K AMOEUCTOnrWEf FIGURE -. SETUP FOR FLATNESS TEST WITH HP 56A TABLE -. FLATNESS TEST RESULTS FROM. Hz TO 0 Hz MEASURED RESULTS FREQ (MHz) POS DETECTOR POLARITY LEVEL LOWER LIMIT UPPER LIMIT NEG DETECTOR POLARITY LEVEL LOWER LIMIT UPPER LIMIT East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

14 LV HEWLETT 08A Option K Page of PERFORMANCE TEST DC LEAKAGE TEST DESCRIPTION This test measures the leakage current of the capacitors in the AM Detector Filter. A 5V supply is applied to the input. The output is connected through a 50 ohm feed-thru to the input of a voltmeter. The leakage current is measured by measuring the voltage dropped across the 50 ohm feed-thru. EQUIPMENT VOLTMETER HP 78A POWER SUPPLY HP 605B 50 OHM FEED-THRU HP 000C PROCEDURE. Connect the equipment up as shown in Figure -5.. Set the 'DETECTOR POLARITY' switch to the 'POS' position.. Turn on the power supply and set it for +5 Volts.. Wait for minutes and then read the voltmeter. Record the voltmeter reading below: Voltmeter reading spec: <.5 mv,.»,,. FIGURE -5. East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

15 m HEWLETT 08A Option K Page of SECTION IV. REPLACEABLE PARTS Table - lists the replaceable parts. It is organized with the electrical components first, in alphabetical order by reference designator, followed by mechanical parts. The following information is given for each part: a. the reference designator; b. the HP Part Number; c. the total quantity (Qty) used in the instrument; d. the part number check digit (CD); and e. the description of the parts. TABLE -. REPLACEABLE PARTS REFER. DESIG. HP PART NUMBER QTY C D DESCRIPTION Al AC AC AC AC AC5 AC6 AC7 AC8 AC9 AC0 AC AC AC AC AC5 AC6 ACR ACR ACR AJ AM DETECTOR FILTER ASSEMBLY CAPACITOR-FXD PF.5PF 00V CER CAPACITOR-FXD.7PF +.5F 00V CER CAPACITOR-FXD UF ±0% 50VDC MET-POLYE CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL CAPACITOR-FXD 00UF +75-0% 5VDC AL DIODE-GEN PRP 5MA DO-5 DIODE-GEN PRP 5MA DO-5 DIODE-PWR RECT 00V A CONNECTOR-RF SMA FEM PC 50-OHM East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

tvi HEWLETT 08A Option K 008-905 Page 5 of TABLE -. REPLACEABLE PARTS (cont'd) REFER. DESIG.

16 tvi HEWLETT 08A Option K Page 5 of TABLE -. REPLACEABLE PARTS (cont'd) REFER. DESIG. HP PART NUMBER QTY C D DESCRIPTION AJ AJ AJ AJ5 AJ6 AJ7 AJ8 AJ9 AJ0 AJ AJ AJ AJ AL AMP AR AR AR AR AR5 AR6 AR7 AR8 AS MP MP MP MP MP5 MP6 MP7 MP8 MP CONNECTOR-RF SMA FEM PC 50-OHM CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BSC-SZ CONNECTOR-SGL CONT SKT.05-IN-BDC-SZ INDUCTOR RF-CH-MLD 50NH ±0% PUSHBUTTON / CHINA WHITE RESISTOR 0 % -5W TF TC=0+00 RESISTOR 5 %.5W TF TC=0±00 RESISTOR 0K %.05W TF TC=0±00 RESISTOR 0 % -5W TF TC=0±00 RESISTOR 0 %.5W TF TC=0±00 RESISTOR 0 %.5W TF TC=0+00 RESISTOR 0 %.5W TF TC=0±00 RESISTOR 0 %.5W TF TC=0±00 SWITCH-PB DPDT ALTNG A 50 VAC FILTER OR AMPLIFIER HOUSING SCREW-MACH -0.5-IN-LG PAN-HD-POZI SCREW-MACH -0.5-IN-LG PAN-HD-POZI SCREW-MACH -0.5-IN-LG PAN-HD-POZI SCREW-MACH -0.5-IN-LG PAN-HD-POZI SCREW-MACH -0.5-IN-LG PAN-HD-POZI SCREW-MACH -0.5-IN-LG PAN-HD-POZI PLUG-HOLE TR-HD FOR.5-D-HOLE NYL PLUG-HOLE TR-HD FOR.5-D-HOLE NYL East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

17 m HEWLETT 08A Option K Page 6 of REFER. DESIG. MP0 MP MP MP MP MP5 MP6 MP7 MP8 TABLE -. HP PART NUMBER QTY REPLACEABLE PARTS (cont'd) C D DESCRIPTION PLUG-HOLE TR-HD FOR.5-D-HOLE NYL PLUG-HOLE TR-HD FOR.5-D-HOLE NYL AM DETECTOR FILTER HOUSING COVER SPACER SPACER NUT-RF CONN, /-6 THD, 5/6-IN NUT-RF CONN, /-6 THD, 5/6-IN WASHER-RF CONN WASHER-RF CONN SECTION V. SERVICE 5-. INTRODUCTION This section contains information for troubleshooting and repairing the AM Detector Filter. Also included in this section are schematics and parts lists for the Impedance Matching Network and Calibration Load required to run the Performance Tests. 5-. IMPEDANCE MATCHING NETWORK The Impedance Matching Network requires no periodic maintenance. If servicing is required, refer to the schematic diagram in Figure 5- on page 8 of this manual. 5-. CALIBRATION LOAD The Calibration Load requires no periodic maintenance. If servicing is required, refer to the schematic diagram in Figure 5- on page 9 of this manual. East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A. r

18 tvi 08A Option K.^7rJI p age 7 of 5-. REPLACEMENTS 5-5. FUSES Replacements for the Impedance Matching Network and Calibration Load can be built with the following procedure:. The parts required to build these devices are listed on pages 8 and 9.. Solder two SMC right angle pc board connectors (50-086) together as shown in Figures 5- and 5-.. Cut the inside ground posts from the connectors.. Solder the resistors to the center and ground posts. 5. A resistor lead or buss wire must be connected between the two center posts and soldered as shown in Figure 5-. To protect the AM Detector Filter from a large dc voltage at the input, AR acts as a fuse. If AR is damaged, AR through AR8 are spare and can be used to replace AR. AR and AR through AR8 are inserted into sockets for easy removal and replacement. East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

19 LV HEWLETT 08A Option K Page 8 of FIGURE 5-. IMPEDANCE MATCHING NETWORK SCHEMATIC CUT GROUND POSTS R CUT GROUND POSTS SOLDER CONNECTORS TOGETHER FIGURE 5-. REPLACEMENT IMPEDANCE MATCHING NETWORK REFER. DESIG. Rl R TABLE 5-. HP PART NUMBER REPLACEMENT IMPEDANCE MATCHING NETWORK PARTS LIST QTY C D DESCRIPTION RESISTOR 5. %.05W TF TC=0±00 RESISTOR.5K %.05W TF TC=0±00 CONNECTOR-RF SMC M PC 50-OHM CONNECTOR-RF SMC M PC 50-OHM ADAPTER-COAX STR F-SMA F-SMC ADAPTER-COAX STR M-SMA F-SMC East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

20 tvi HEWLETT 08A Option K Page 9 of FIGURE 5-. CALIBRATION LOAD SCHEMATIC CUI GROUND POSTS SOLDER CONNECTORS TOGETHER CUT GROUND POSTS FIGURE 5-. REPLACEMENT CALIBRATION LOAD REFER. DESIG. Rl R TABLE 5-. HP PART NUMBER REPLACEMENT CALIBRATION LOAD PARTS QTY C D 8 7 DESCRIPTION RESISTOR 5 %.05W TF TC=0±00 RESISTOR 0K %.05W TF TC=0+00 CONNECTOR-RF SMC M PC 50-OHM CONNECTOR-RF SMC M PC 50-OHM ADAPTER-COAX STR F-SMA F-SMC ADAPTER-COAX STR F-SMA F-SMC East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

21 tvi HEWLETT 08A Option K Page 0 of» tt IX <H H? h> <H M l«o Hi H">l R6 o Rf to o HB to 0 c> o- C C5 B l l I j ' C C e e e C6 l! C5 o C7 a CI6 - o / FIGURE 5-5. Al COMPONENT LOCATOR East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

22 m HEWLETT 08A Option K Page of East 00 Mission Avenue, TAF-C-, Spokane, WA 990 U.S.A.

MANUAL UPDATING CHANGES CHANGE DATE: June 16, 2004

MANUAL UPDATING CHANGES CHANGE DATE: June 16, 2004 MANUAL IDENTIFICATION MANUAL UPDATING COVERAGE This supplement adapts your manual to Serial Numbers prefixed through: 3708A Instrument: HP 5087A Distribution