Power and Temperature Measurement Setup Guide

Transcription

1 Standard Perfrmance Evaluatin Crpratin (SPEC) Pwer and Temperature Measurement Setup Guide 7001 Heritage Village Plaza, Suite 225 Gainesville, VA 20155, USA SPECpwer Cmmittee

2 Table f Cntents 1. Intrductin General Pwer Analyzer Setup Infrmatin Initial Device Setup Pwer Analyzer Cnnectin Types Serial Prts Serial Cables Baud Rates USB-Serial adapters USB Prts USBTMC Ykgawa USB GPIB Interfaces GPIB-USB Adapters Virtual COM prt GPIB adapters Ethernet Interfaces Starting PTDaemn n the Cntrller System Using Multiple Pwer Analyzers Cnfiguratin fr Cmpliant SPECpwer Measurements Managing Measurement Uncertainty Restrictins f Currently Accepted Pwer Analyzers Capability List f Currently Accepted Pwer Analyzers Calibratin Requirements Multi-channel Pwer Analyzers Phase Pwer Cnsideratins External Current Sensrs and Current Transfrmers Pwer Analyzer Setup Infrmatin fr Accepted Devices Chrma Hardware Cnfiguratin Range Setting and Uncertainty Calculatin Chrma and Hardware Cnfiguratin Hiki 3334, PW3335, PW3336, PW General Hardware Cnfiguratin RS232 Interface Range Setting and Uncertainty Calculatin Multi-Channel Measurements Infratek 101A, 107A-1Channel, 107A-3Channel Hardware Cnfiguratin Range Setting and Uncertainty Calculatin Multi-Channel Measurements Instek GPM Hardware Cnfiguratin Range Setting and Uncertainty Calculatin Newtns 4 th PPA5x0, PPA15x0 and PPA55x Hardware Cnfiguratin Tektrnix PA Hardware Cnfiguratin Vltech PM Hardware Cnfiguratin Range Setting and Uncertainty Calculatin Xitrn Hardware Cnfiguratin Multi-Channel Measurements January 2017 page 2 f 31 Cpyright SPEC

3 3.10 Ykgawa WT Hardware Cnfiguratin Ykgawa WT310/310e and WT330/330e Hardware Cnfiguratin Phase Measurements Ykgawa WT500 and WT Hardware Cnfiguratin Multi-Channel Measurements Phase Measurements ZES LMG95, LMG450, LMG Hardware Cnfiguratin Range Setting and Uncertainty Calculatin Multi-Channel Measurements Temperature Sensr Setup Infrmatin fr Accepted Devices Digi Watchprt/H and Watchprt/T Hardware Cnnectin Windws Sftware Cnfiguratin Linux Sftware Cnfiguratin Hardware Cnnectin Windws Sftware Cnfiguratin Linux/Other Sftware Cnfiguratin ibuttnlink LinkUSBi + T-Sense/T-Prbe Hardware Cnnectin Windws Sftware Cnfiguratin Trubleshting Disclaimer Appendix A: Cnfiguring the Prlgix GPIB-USB-Virtual COM Prt Adapter Appendix B: Setup Instructins fr Unsupprted Devices SVN Revisin: 1542 SVN Date: 2017/01/20 11:04:18 09 January 2017 page 3 f 31 Cpyright SPEC

4 1. Intrductin This practical guide will explain hw t set up and run pwer analyzers and temperature sensrs t cmmunicate with SPEC s Pwer/Temperature Daemn (PTDaemn) n a cntrller system. It als describes the cnfiguratin requirements t measure cnfrming results fr the varius SPECpwer benchmarks and tls. This dcument is a cmpanin t the assciated SPECpwer User Guides. The underlying principles f SPEC pwer measurements may be fund in the SPEC Pwer_and_Perfrmance_Benchmark Methdlgy dcument. Thrughut this dcument SPECpwer is used as a synnym fr the varius SPEC benchmarks and tls which prvide pwer measurements, such as SPECpwer_ssj2008 and SERT. BE SURE t read, understand, and fllw all f the safety rules and installatin instructins that cme with yur pwer analyzer and system under test (SUT). T check fr pssible updates t this dcument, please see 2. General Pwer Analyzer Setup Infrmatin 2.1 Initial Device Setup The first step in setting up any measurement device is t get the device cmmunicatins t the cntrller system functining using the vendr-supplied sftware. Fllw the manufacturers instructins fr hardware cnnectin, device driver, and sftware installatin. If the device cannt be cntrlled using the manufacturer s sftware, d nt prceed t the next step. Instead, cntact the manufacturer fr technical supprt. This dcument will NOT cver the electrical cnnectins required fr prper pwer measurement. Please refer t the dcumentatin supplied with yur device, and cntact the manufacturer if additinal infrmatin is needed. 2.2 Pwer Analyzer Cnnectin Types Serial Prts Standard RS-232 cnnectins are ne f the mst cmmn analyzer interfaces. Many analyzers have a DB-9 r DB-25 serial cnnectin. The DB-9 cnnectr n many cmputers may be cnnected directly t a DB-9 r DB-25 serial cnnectin n the analyzer. Sme devices require a crss-ver r null mdem cable. Refer t manufacturers instructins r the device-specific instructins belw. Serial prt naming standards fr ppular perating systems: Windws: COM1, COM2, COM9 Linux: /dev/ttys0, /dev/ttys1, Slaris: /dev/ttya, /dev/ttyb (Slaris is nly supprted in PTDaemn versins r lwer) The default cnnectin type fr PTDaemn is serial. N cmmand-line ptin is used t specify a serial cnnectin, and the serial prt name (as listed in the examples abve) is used fr the prt argument t PTDaemn. If yu will be using a serial cnnectin n the pwer analyzer, please see the crrespnding pwer analyzer sectin belw fr specifics regarding required serial settings such as baud rate, etc. 09 January 2017 page 4 f 31 Cpyright SPEC

5 Serial Cables Sme analyzers have serial prt hardware that is very sensitive t nise and crrect signals. Please ensure that yu have a high-quality serial cable and that ALL signals are intercnnected. Timeuts, missed readings, and cnnectin failures can ccur with cables that d nt implement the full set f RS232 signals Baud Rates Each device has a baud rate prgrammed in PTDaemn that can be fund in the device s sectin f this dcument. Hwever, starting with versin 1.6.0, the default baud rate can be verridden using the cmmand-line parameter -B <baud rate> USB-Serial adapters Standard RS-232 serial prts are becming less cmmn n cmputers due t space cnstraints. Hwever, there are many inexpensive USB-serial adapters n the market tday. Windws drivers available fr thse devices allw the user t see additinal virtual serial prts, such as COM7. Many f these same adapters will als wrk n Linux. If the Linux distributin includes the usbserial driver, it is likely t autdetect and enable the adapter. Typically the device name will be created as /dev/ttyusb0. Use dmesg t find the prt yur analyzer uses. Nte: USB-Serial cnverters may nt ship with 64-bit Windws drivers. Sme users have reprted success using the 64-bit drivers fund at the fllwing website: This website is nt affiliated with SPEC, and SPEC will nt prvide supprt related t these drivers. Use at yur wn risk USB Prts Pwer analyzers available with USB data cmmunicatins capability typically may be cnnected t a USB prt n the cntrller system. Many such analyzers are USBTMC-cmpliant and can be cntrlled by Windws r Linux hsts with the apprpriate USBTMC drivers. Others can be cntrlled using vendr-supplied drivers USBTMC Many Ykgawa analyzers, and ther USBTMC-cmpliant devices such as the Tektrnix PA1000 and the Chrma and 66204, can be cntrlled by Linux systems using Agilent s USBTMC driver (available frm Agilent and als included in many recent Linux distributins). In this case the device will appear t PTDaemn as a serial prt using /dev/usbtmc<#>. This feature is supprted in PTDaemn versin and higher. These same analyzers can als be cntrlled by Windws systems using Keysight s IO Libraries suite ( Simply installing the IO Libraries Suite in its typical cnfiguratin shuld prvide the shared libraries and drivers needed fr PTDaemn t cnnect t USBTMC devices. USBTMC devices discvered by the Keysight suite will be numbered sequentially starting at 1. PTDaemn prvides the -U argument fr Windws USBTMC usage, s a typical cmmand wuld be ptd-windws-x86 -U 49 1 fr a Ykgawa WT310 which was the nly USBTMC device cnnected t the system. This feature is supprted in PTDaemn versin and higher. If the Keysight IO Libraries installed crrectly, yur USBTMC device shuld be listed in the Instruments panel f the Keysight Cnnectin Expert. 09 January 2017 page 5 f 31 Cpyright SPEC

6 There may be cnflicts between the Keysight drivers and ther drivers such as the Ykgawa YKMUSB driver r ther VISA implementins that use USB devices, s installatin f mre than ne library at a time is nt recmmended. Ykgawa Ethernet supprt thrugh the TMCTL libraries shuld nt cnflict with Keysight USBTMC Ykgawa USB Ykgawa s WT310, WT330, WT500 and WT1800 can als be cntrlled by a Windws hst ver a USB cnnectin by PTDaemn using Ykgawa s drivers. See the assciated setup sectins fr further infrmatin GPIB Interfaces Many instruments have a GPIB / IEEE488 interface ptin available. Several vendrs sell adapters that allw PC cnnectins t GPIB, either via USB, PCI, PCIe r ther hardware interface. Thse adapters fall int tw categries: ne type that cmmunicates via prprietary drivers and DLLs, and anther type that presents a virtual cmmunicatins prt interface t the perating system GPIB-USB Adapters PTDaemn has been tested with Natinal Instruments NI488.2 GPIB-USB-HS adapter and NI sftware, and the Agilent 82357A USB/GPIB adapter. If the sftware and drivers are installed crrectly, PTDaemn can access GPIB devices thrugh the gpib-32.dll interface fr Natinal Instruments, r the agt-32.dll interface fr the Agilent device. It is likely that PTDaemn will als wrk with NI adapters ther than the USB versin, as lng as they are supprted by NI drivers, but n thers have been tested. When starting PTDaemn t cmmunicate with an analyzer using ne f these adapters, the -g argument must be used t specify GPIB, and the analyzer s GPIB address is used rather than a COM prt fr the device number. The SPEC PTDaemn GPIB device supprt is currently nly available with Micrsft Windws perating systems Virtual COM prt GPIB adapters The Prlgix GPIB-USB Cntrller cnverts GPIB interfaces t a physical USB cnnectin n the cntrller system which is viewed by the Windws OS as a virtual COM prt. See Appendix A fr infrmatin n cnfiguring the Prlgix device t cmmunicate with yur pwer analyzer. When starting PTDaemn t cmmunicate with an analyzer using ne f these adapters, the virtual COM prt shuld be used as the interface, and the -g parameter shuld NOT be used, since PTDaemn views this as a serial device. This device is nly supprted under Micrsft Windws perating systems Ethernet Interfaces Pwer analyzers available with Ethernet cmmunicatins capability typically can cnnect via a netwrk t the hst cmputer. Sme such analyzers have prprietary prtcls and can be cntrlled by SPEC s PTDaemn if vendr-supplied drivers are available. Others use standard prtcls and can be cntrlled directly by PTDaemn. 09 January 2017 page 6 f 31 Cpyright SPEC

7 The Tektrnix PA1000 and many f the Hiki analyzers can be cntrlled via TCP/IP directly by PTDaemn using the -n ptin. See the setup sectin fr the specific analyzers fr further infrmatin. Many Ykgawa analyzers can be cntrlled via their Ethernet prt by PTDaemn using Ykgawa drivers. See the assciated analyzer s setup sectin fr further infrmatin. 2.3 Starting PTDaemn n the Cntrller System After the analyzer is cnnected apprpriately t the cntrller system CCS and turned n, the PTDaemn may be started. The cmmand line frmat is: ptd [ptins] <device-type-#> <device-prt> <device-type-#>: <device-prt>: With h ptin a list f all available pwer and temperature devices is shwn. The device-prt number, e.g. COM1 fr Windws r /dev/ttys0 fr Linux. The fllwing ptins are available: -h Print usage message -? Print usage message -p prt Netwrk prt, default q Quiet mde, minimal utput t cnsle -s Enable additinal statistics utput -v Increase general debug utput (may be repeated) -m Increase meter-specific debug utput (may be repeated) -l lgfile Lg standard utput t lgfile -C <dd/mm/yyyy r yyyy-mm-dd> Specify analyzer calibratin date -e Use extended lgfile frmat -d debugfile Lg debug utput t file -D Enable DC measurement -B <value> Set nn-default baud rate t be used with serial device -t Temperature mde, default is pwer mde -V <value> Set analyzer vltage range t lwest needed fr value r autrange if value = 'a'\n" -A <value> Set analyzer ampere range t lwest needed fr value r autrange if value = 'a'\n" -u List unsupprted devices that may wrk -c <channel> Select channel number fr multichannel analyzers perating in single channel mde -n Use TCPIPv4 ethernet interface Optins nly available n Windws: -g Use GPIB-USB interface (default is RS232) -b <prt> Set GPIB bard number (default is 0) -y Use Ykgawa USB r Ethernet interface -U Use Keysight/Agilent USBTMC interface 2.4 Using Multiple Pwer Analyzers When utilizing multiple pwer analyzers t measure ne r mre SUTs, the prcedure fr cnnecting each pwer analyzer is similar t cnnecting a single SUT/single pwer analyzer cnfiguratin. Fr each cnnected pwer analyzer a unique PTDaemn instance must be started with the apprpriate parameters. If multiple PTDaemn instances are run n the same cntrller, they must each be assigned a unique TCP/IP prt number using the -p cmmand-line switch. 09 January 2017 page 7 f 31 Cpyright SPEC

8 2.5 Cnfiguratin fr Cmpliant SPECpwer Measurements Please be aware t always check fr the latest infrmatin! On the abve website yu find a list f pwer measuring devices that have been tested by SPEC and that are accepted fr use in the measurement f cmpliant results as they passed the SPECpwer Analyzer Acceptance Test. Additinally als the minimum PTDaemn versin required fr publishable results fr the varius benchmarks using PTDaemn, changes ver time and is specified in the SPEC Pwer Temperature Daemn (PTDaemn) Update Prcess. This update prcess is als dcumented n the website abve. Cmpliant results are thse that meet all the requirements specified in the Run and Reprting Rules f the varius SPECpwer benchmarks. Additinally restrictins fr sme individual analyzer types fr cnfrming SPECpwer measurements, e.g. t the PTDaemn versin r allwed range settings, are listed in chapter 2.6. There are als analyzer types which may perate successfully with the PTDaemn but are nt accepted fr cmpliant SPECpwer benchmark runs. They are available fr research purpses nly. A cmplete list f all tested analyzers including all accepted analyzers is displayed using the -u (unsupprted) flag, PTDaemn u. Supprt is nt available frm SPEC fr use f any unsupprted analyzer types. 2.6 Managing Measurement Uncertainty Anther very imprtant issue f measuring cmpliant pwer data is the cnfiguratin f the crrect vlt and ampere ranges apprpriate t the measurement envirnment t avid inaccurate r even invalid values. Fr cmpliant SPECpwer benchmark runs, specific uncertainty requirements have t be guaranteed accrding t the SPECpwer Run and Reprting Rules. The uncertainty f a measured pwer value depends n hw well the cnfigured vlt and ampere ranges fit t this value. The frmulas t calculate the uncertainty ften directly include the cnfigured vlt and ampere ranges. Selecting the vlt range is quite easy as the vltage depends nly n the pwer surce and des nt change during the test. Selecting the ampere range is mre cmplex, because it differs with the SUT s pwer cnsumptin during the benchmark run. A large difference between different lad levels may even require individual ampere range settings fr each level. PTDaemn has the ability t select the clsest range apprpriate fr a requested value. The infrmatin is maintained n a per-analyzer basis. Fr example, if yu specify a range f 2.2A and the analyzer in use has ranges f 0.5, 1.0, 2.0 and 5.0A, PTDaemn will set the analyzer t the 5.0A range. There are three ways t set the vlt and ampere ranges f the analyzer: manual range setting: Fr instructins read the manufacturer s manual. PTDaemn cannt read range settings fr sme pwer analyzers such as the Instek GPM-8212; cmpliant runs cannt be prduced using manual range settings fr these analyzers. fixed range setting via PTDaemn cmmand line input parameters: When starting the PTDaemn the vlt and ampere ranges can be set by selecting the cmmand line flags A and V. Fr example, using the parameter -A 1.6 will cause PTDaemn t set the current range t the next highest range that can legally measure 1.6A fr the analyzer mdel in use. 09 January 2017 page 8 f 31 Cpyright SPEC

9 dynamic range setting via benchmark cmmand interface: Mst SPECpwer benchmarks prvide the ability t set ranges dynamically thrugh cnfiguratin parameters. Fr instructins read the user guide fr the assciated benchmark. This is the nly recmmended technique since it gives the ability t set different ranges fr different lad levels. Selecting aut-range mde des nt prvide cmpliant measurement results fr any currently accepted analyzer types. There are tw main reasns: Changing the range in aut-range mde ften needs s much time that several samples f the active measurement may be missed during the setting. In aut-range mde the current ranges have t be read by the analyzer t cmpute the current uncertainty value. Nt all analyzers prvide this capability, and even thse that d are nt able t guarantee that the range readings were thse used fr the measurement values at that pint f time. The capabilities in range setting, uncertainty calculatin and aut-range cmpliance are listed in sectin 2.7. T cnfigure the benchmark t minimize uncertainty, a few simple steps shuld be fllwed: First, run the benchmark with the pwer analyzer vltage range set t the vltage in use, and the current range set t either aut r the highest range expected. Next, examine the utput files t determine the average current used during each benchmark lad level Finally, set the benchmark-specific pwer analyzer range cnfiguratins t values apprpriate fr the current f each lad level. A small amunt f margin shuld be maintained s that the measurement des nt end up ver-ranging. Fr example, if the average current during a measurement is 0.95A, it may be necessary t set the range t a value larger than 1.0A. 09 January 2017 page 9 f 31 Cpyright SPEC

10 2.7 Restrictins f Currently Accepted Pwer Analyzers Restrictin List f Accepted Pwer Analyzers Analyzer 1st Supprted in PTDaemn Versin Minimum Firmware versin Minimum Restrictins n Use with SPECpwer Chrma v v1.20 Chrma and v1.6.3 Nne Hiki 3334 v v1.10 Hiki PW3335 v1.8.0 nne Hiki PW Channel Hiki PW Channel 3-Phase v1.8.0 v1.8.0 nne nne Infratek 107A-1 v1.2 nne Valid nly fr lw shunt ranges (0.01, 0.1, 0.4, 2.0 ARMS) and the 20 ARMS high shunt range May nly use ne f the channels at a time Maximum valid lad currents less than A, with PTD versin >= v1.4.0 and firmware versin > v1.10 maximum valid lad currents less than A Maximum valid lad currents less than 20A Maximum valid lad currents less than 33.33A/channel Maximum valid lad currents less than 33.33A/channel Valid nly fr lad currents less than half the selected current range in rder t satisfy the required minimum crest factr value f 3 Instek GPM Newtns4th PPA5x0 Newtns4th PPA15x0 Newtns4th PPA55x0 Tektrnix PA1000 Vltech PM1000+ v1.2 nne v v v v1.7.1 nne Valid nly fr lad currents less than 10A May nly use ne f the channels at a time May nly use ne f the channels at a time May nly use ne f the channels at a time. v1.4.1 v Xitrn 2802 v1.3 nne May nly use ne f the channels at a time. 09 January 2017 page 10 f 31 Cpyright SPEC

11 Restrictin List f Accepted Pwer Analyzers Analyzer Ykgawa WT210 Ykgawa WT310&310e Ykgawa WT330&330e 3-phase Ykgawa WT500 3-Channel 3-Phase Ykgawa WT1800 1st Supprted in PTDaemn Versin Minimum Firmware versin v1.0 v1.11 v1.6.0 v1.7.0 v1.3.9 v1.5.0 v1.5.0 v1.4.2 nne nne nne nne Minimum Restrictins n Use with SPECpwer In the case where an external current sensr ptin is installed, it must be disabled, and in this scenari, the minimum PTDaemn versin required is v Can be used in r 3- Phase mde. Can be used in, 3- Channel r 3-Phase mde. May nly use ne f the channels at a time ZES Zimmer LMG95 v1.2 nne - ZES Zimmer LMG450 4-Channel 3-Phase ZES Zimmer LMG500 4-Channel 3-Phase v1.0 v1.4.0 v1.4.0 v1.2 v1.4.1 v1.4.1 nne nne Can be used in, 4- Channel r 3-Phase mde. Can be used in, 4- Channel r 3-Phase mde. 2.8 Capability List f Currently Accepted Pwer Analyzers Characteristics f pwer analyzers vary widely. The fllwing table shws the PTDaemn s range setting capabilities f all currently accepted devices. Nrmally these range setting capabilities are the same as described in the manufacturer s dcuments, but it may happen that there are differences because f newer analyzer revisins. Range settings which are requested by the user and nt listed in this table fr a specified analyzer type, are always adapted by the PTDaemn t the ptimal available range in this list. 09 January 2017 page 11 f 31 Cpyright SPEC

12 Pwer Analyzer Range Setting Capabilities via SPECpwer PTDaemn Analyzer PTD- ID Ampere Range Settings Fixed Range Setting via PTDaemn parameters (static setting fr cmplete benchmark run) Dynamic Range Setting by PTDaemn cmmands (individual setting fr each target lad) Chrma , 0.1, 0.4, 2.0, 8, 20 Chrma and ,.02,.05,.2,.5, 2, 5, 20 Hiki , 0.3, 1.0, 3.0, 10.0, 30.0 Hiki PW Hiki PW Channel Hiki PW Channel 3-Phase , 0.002, 0.005, 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, , 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, , 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0 Infratek 107A , 3, 10 N Instek GPM Newtns4th PPA5x0 DC , 0.32, 0.64, 1.28, 2.56, 5.12, 10.24, Depends n mdel Newtns4th PPA15x0 41 Depends n mdel Newtns4th PPA55x0 44 Depends n mdel Tektrnix PA1000 Xitrn 280X: Vltech PM , 0.14, 0.35, 0.7, 1.4, 3.5, 7.0, 14.1, , 0.03, 0.1, 0.3, 0.65, 2.0, 6.5, 20, , 0.3, 1.1, 4.4, 17.7, January 2017 page 12 f 31 Cpyright SPEC

13 Pwer Analyzer Range Setting Capabilities via SPECpwer PTDaemn Analyzer PTD- ID Ampere Range Settings Fixed Range Setting via PTDaemn parameters (static setting fr cmplete benchmark run) Dynamic Range Setting by PTDaemn cmmands (individual setting fr each target lad) Ykgawa WT210 DC Ykgawa WT310&330e DC Ykgawa WT330 &330e 3-Phase Ykgawa WT500 3-Channel 3-Phase DC Ykgawa WT1800 ZES LMG95 DC , 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, , 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, , 1.0, 2.0, 5.0, 10.0, , 1.0, 2.0, 5.0, 10.0, 20.0, A channel: 0.01, 0.02, 0.05, 0.1, 0.2, 0.5, 1.0, 2.0, A channel: 1.0, 2.0, 5.0, 10.0, 20.0, , 0.3, 0.6, 1.2, 2.5, 5, 10, 20, 120, 240, 480, 960 ZES LMG450: 4-Channel 3-Phase , 1.2, 2.5, 5, 10, 16 ZES LMG500: 4-Channel 3-Phase , 0.04, 0.08, 0.15, 0.3, 0.6, 1.2, 2.5, 5, 10, 20, 32 The fllwing table shws the uncertainty calculatin capabilities and aut-range cmpliance f currently accepted analyzers: 09 January 2017 page 13 f 31 Cpyright SPEC

14 Pwer Analyzer Uncertainty Calculatin Capabilities via SPECpwer PTDaemn and Autrange Cmpliance Analyzer PTD-ID Range Reading by PTDaemn cmmands Uncertainty Calculatin by PTDaemn cmmands Aut-range Cmpliance fr SPECpwer Chrma 6620x 31 Chrma and frmulas, nly if nt aut-range mde frmulas, nly if nt aut-range mde N N Hiki frmulas N Hiki PW frmulas N Hiki PW Channel Hiki PW Channel 3-Phase Infratek 107A frmulas N frmulas N nly if nt aut-range mde frmulas, nly if nt aut-range mde N Instek GPM Newtns4th PPA5x0 DC Newtns4th PPA15x0 Newtns4th PPA55x0 Tektrnix PA nly if range was set via PTDdaemn frmulas, nly if nt autrange mde N Frmulas N 41 frmulas N 44 Frmulas N 56 Frmulas N Xitrn 280X: 28 nly if range was set via PTDdaemn estimatin f wrst case N Vltech PM frmulas N Ykgawa WT210 DC Ykgawa WT310&330e DC frmulas N frmulas N 09 January 2017 page 14 f 31 Cpyright SPEC

15 Pwer Analyzer Uncertainty Calculatin Capabilities via SPECpwer PTDaemn and Autrange Cmpliance Analyzer PTD-ID Range Reading by PTDaemn cmmands Uncertainty Calculatin by PTDaemn cmmands Aut-range Cmpliance fr SPECpwer Ykgawa WT330&330e 3-Phase Ykgawa WT500 3-Channel 3-Phase DC Frmulas N frmulas N Ykgawa WT frmulas N ZES LMG95 DC frmulas N ZES LMG450: 4-Channel 3-Phase frmulas N ZES LMG500: 4-Channel 3-Phase frmulas N 2.9 Calibratin Requirements The analyzer must have been calibrated by a standard traceable t NIST in the USA ( r a cunterpart natinal metrlgy institute in ther cuntries, such as PTB in Germany r NML in Taiwan. The calibratin certificate must be dated within ne year f the test date. The manufacturer s test certificate received with the analyzer meets the SPECpwer calibratin requirements if the certificate is entitled "Certificate f Calibratin" r "Certificate f Traceable Calibratin" and includes a unique calibratin number r sticker, lab accreditatin t ISO r ther standards, and test equipment certificatin with traceability t a natinal standards institute. Nte: The calibratin certificate issued is valid nly fr the specific device (ne serial number) calibrated Multi-channel Pwer Analyzers Analyzers with multiple channels may have several different mdes supprted by PTDaemn: 09 January 2017 page 15 f 31 Cpyright SPEC

16 : Only a single channel (usually user-specified) may be used at ne time 3-Phase: 3 channels may be cnfigured t measure 3-phase pwer and reprt the aggregate values as a single virtual channel. Multi-Channel: all channels may be cnfigured independently and reprt per-channel values via PTDaemn; benchmarks are respnsible fr aggregating the values frm the different channels The multi-channel features are nt yet integrated int all SPECpwer benchmarks. Fr example, SPECpwer_ssj2008 nly supprts the 3-Phase mde with the restrictin that fr all channels the range settings have t be identical. In this case nly the data f the sum channel calculated by the analyzer frm the individual channels are reprted. The calculatin frmulas are explained in the SPEC Pwer_and_Perfrmance_Benchmark Methdlgy dcument. The apprpriate range settings f the individual channels can be estimated by the fllwing frmulas: Estimated ampere range: Estimated vlt range: Expected maximum ampere / sqrt(3) Expected maximum vlt / sqrt(3) Phase Pwer Cnsideratins The nly 3-phase wiring scheme supprted fr cmpliant measurements with PTDaemn is 3-phase 4-wire. This is the nly wiring scheme in which uncertainty can be calculated prperly. Additinally, the lads n each phase must be similar t achieve measurements with lw uncertainty, since ranges are set identically n each channel and uncertainty has terms prprtinal t range/reading. In rder t simplify measurement f 3-phase pwer surce, PTDaemn des sme wrk behind the scenes t make 3-phase range settings functin similarly t a single-phase lad frm the user pint f view, while hiding the details f the individual channel settings. Ranges (bth vltage and current) shuld be specified as the aggregate 3-phase values, and PTDaemn will prgram the individual channels as apprpriate. A user-specified vltage r current will be divided by the square rt f 3, and the resulting value used fr each single channel s range. Range settings will als be reprted in the same way fr cnsistency. This allws autmatic range-setting prcesses such as that implemented in SPEC s SERT tl t functin prperly withut user interventin External Current Sensrs and Current Transfrmers PTDaemn des nt supprt the use f external current sensrs r current transfrmers. There are a number f reasns behind this decisin. There are t many pprtunities fr accidental r deliberate errneus readings using external sensrs. There is n way t prgrammatically detect a cnnected external sensr mdel t verify that settings are crrect. There is very little demand fr their use n cmputer servers when there are a number f supprted analyzers that can measure 30A r mre per channel fr single r three-phase pwer. The added uncertainty f the external devices can push ttal uncertainty ver 1%, which des nt meet ur requirements. Adding supprt fr external sensrs wuld result in an explsin in cde cmplexity due t the need t add multiple variatins fr uncertainty calculatins and range settings fr every supprted sensr. 09 January 2017 page 16 f 31 Cpyright SPEC

17 3. Pwer Analyzer Setup Infrmatin fr Accepted Devices The fllwing instructins prvide infrmatin specific t use f SPEC s PTDaemn with each accepted device. The manufacturer s dcumentatin shuld be the primary reference fr all subsectins (hardware cnfiguratin and input cnnectin) fr which specific infrmatin is nt prvided. Interfaces dcumented belw are thse that have been tested by SPEC. Other interfaces may be available frm the assciated vendr but have nt been tested by SPEC. An up t date list f pwer analyzers and temperature sensrs which are accepted fr SPECpwer submissins can be fund at the fllwing URL: Chrma Hardware Cnfiguratin GPIB Set GPIB device address per Chrma User s Manual Input Cnnectin Direct input nly Firmware Versin - Analyzer firmware versin must be v1.20 r higher Range Setting and Uncertainty Calculatin Fr SPECpwer, measurement results frm the Chrma are valid nly if the fllwing requirements have been satisfied: Lw shunt ranges must be ne f the fllwing: 0.01, 0.1, 0.4, 2.0 ARMS. All ther lw shunt ranges will result in invalid benchmark runs. The nly high shunt range that can be used is the 20ARMS range. 3.2 Chrma and Hardware Cnfiguratin GPIB Set GPIB device address per Chrma User s Manual Input Cnnectin Direct input nly 3.3 Hiki 3334, PW3335, PW3336, PW General Hardware Cnfiguratin Cnnect the analyzer accrding t the manufacturer s instructin manual (chapter 2 and 3) and reset the analyzer t factry defaults. The fllwing cnnectins are available: RS232 GPIB - available but nt yet tested LAN - nt available fr Hiki 3334 Nte: The Hiki s display is lcked when the PTDaemn is started. After stpping the PTDaemn yu have t press special buttns (please see the instructin manual) t reuse it. 09 January 2017 page 17 f 31 Cpyright SPEC

18 3.3.2 RS232 Interface The analyzer s baud rate has t be cnfigured accrding t the default baud rate cnfiguratin in PTDaemn: Analyzer Hiki 3334 Hiki PW3335 Hiki PW3336 Hiki PW3337 Baud rate Alternatively yu can als define the PTDaemn baud rate via the B cmmand line (see chapter ) Range Setting and Uncertainty Calculatin Fr SPECpwer, measurement results frm the Hiki 3334 are valid nly fr lad currents less than A t ensure that a crest factr f at least 3 can be supprted. This limit is increased t A with firmware versins > v1.10. Fr Hiki PW3335 the limit is 20A, fr Hiki PW3336/ A Multi-Channel Measurements The Hiki PW3336 and Hiki PW3337 analyzers can als be used as 2/3-channel analyzers by PTDaemn prviding the measurement data f all individual channels. The sum value f pwer f all individual channels is calculated and als prvided by PTDaemn. The Hiki PW3337 can als be used in the 3-Phase mde nw prviding the calculated sum values f watts, vlts, amps and pwer factr. Mre infrmatin f the range settings in 3-phase mde can be fund in chapter Infratek 101A, 107A-1Channel, 107A-3Channel Hardware Cnfiguratin Cnnect the analyzer accrding t the manufacturer s manual. Nte: The 107A s display is lcked when the PTDaemn is started. After stpping the PTDaemn yu have t turn the analyzer ff and n t reuse it. RS232 - The Infratek s RS232 interface is cnfigured t the crrect parameters by default (Baud:9600, Parity:Nne, Terminatr:CR, Handshake:Nne, IEEE_address:n/a). Only the interface parameters f the Infratek 107A can be changed by the user. Instructins are described in the manufacturer s manual (chapter 6.4 Setting Interface Parameters). Input Cnnectin - Fr Infratek 107A there are tw input channels available. Fr instructins hw t select and cnfigure the input channel that fits best t yur envirnment, read the manufacturer s manual (chapter 4.6). T measure valid pwer data the cnnected physical input channel has als t be selected manually n the display. Firmware Versin - There are n restrictins t any firmware versins Range Setting and Uncertainty Calculatin Instructins n hw t cnfigure the range setting are given in the manufacturer s manual (chapter fr Infratek 101A r chapter fr Infratek 107A: Range Selectin, Aut Range Selectin). The 101A supprts range setting via PTDaemn cmmand interface and PTDaemn input parameters. The 107A nly supprts range setting via PTDaemn input parameters, as after being started it is n lnger cnfigurable. S there is n pssibility t cnfigure the range setting fr every individual lad 09 January 2017 page 18 f 31 Cpyright SPEC

19 level f the SPECpwer benchmark. If the electrical pwer differs between every lad level in a larger range, this may cause prblems t get valid measurement data. Fr SPECpwer, measurement results frm the Infratek 107A are nly valid fr lad currents less than half the selected current range in rder t satisfy the required minimum crest factr value f 3. Bth analyzers prvide uncertainty checking by the PTDaemn Multi-Channel Measurements The 107A-3Channel analyzer can nly be used as a single-channel analyzer with PTDaemn. Only channel 1 is evaluated. 3.5 Instek GPM Hardware Cnfiguratin RS232 Use default settings Input Cnnectin Direct input nly Firmware Versin Range Setting and Uncertainty Calculatin Fr SPECpwer, measurement results frm the Instek GPM-8212 are nly valid fr lad currents less than 10A in rder t satisfy accuracy requirements. Since the Instek sftware interface des nt allw reading f vltage and current ranges, manual setting f ranges via the device s frnt panel will nt prduce valid results. 3.6 Newtns 4 th PPA5x0, PPA15x0 and PPA55x Hardware Cnfiguratin The PPA series f analyzers shuld be precnfigured using the keypad buttns prir t use with the PTDaemn sftware. RS232 - The analyzer s serial cmmunicatins settings shuld be cnfigured frm the frnt panel. Use the Remte key t enter the cmmunicatins settings menu; select RS232, and then set the baud rate t Tektrnix PA Hardware Cnfiguratin The PA1000 shuld be precnfigured using the keypad prir t use with the PTDaemn sftware. Ethernet use the frnt panel t cnfigure a static IP address n yur lcal netwrk, r cnfigure the device fr DHCP and read the IP address frm the status menus. GPIB use the frnt panel t cnfigure the GPIB address USB (Linux nly) n special cnfiguratin is needed 09 January 2017 page 19 f 31 Cpyright SPEC

20 3.8 Vltech PM Hardware Cnfiguratin The PM1000+ shuld be precnfigured using their keypad buttns prir t use with the PTDaemn sftware. First, reset the analyzer t factry default. Nte: Once PTDaemn 'cnnects' t the PM1000+, the frnt panel is 'lcked' t avid inadvertent changes during a SPECpwer benchmark run. T re-enable the frnt panel, exit PTDaemn and the frnt panel shuld be enabled again. RS232 - Fr RS-232 cnnectins, a cable with DB9 Female and DB25 Male cnnectrs and straight thrugh (nt null mdem) capability are required. The analyzer s serial cmmunicatins settings shuld be cnfigured fr baud befre use with PTDaemn GPIB - The GPIB address f the analyzer can be viewed and changed via the frnt-panel cmmand buttns. That address is used as the prt number fr use with the -g cmmandline argument with true GPIB adapters. Fr GPIB cnnectins with a virtual COM prt driver, see Appendix A. Cnnect the cnverter t the GPIB interface f the analyzer, and cnnect the cntrller Range Setting and Uncertainty Calculatin T avid bad samples due t aut ranging, set up the analyzer fr the vltage and current ranges expected during the test. 3.9 Xitrn Hardware Cnfiguratin The Xitrn 2802 shuld be precnfigured using the keypad buttns befre using the device fr benchmark testing. The analyzer shuld als be cnfigured t use the crrect prt (GPIB r RS232) depending n which ptin is available. RS232 - Fr RS-232 cnnectins, a serial cable with DB9 Female and DB25 Male cnnectrs and null mdem capability are required. The analyzer s serial cmmunicatins settings shuld be cnfigured as fllws: Press the menu key in display windw use the Up/dwn arrw keys t select Setup System ; Press enter In display windw use the Up/dwn arrw keys t select RS232 Baud Rate ; Press enter In display windw use the Up/Dwn arrw keys t select a baud rate f ; Press enter. Press the menu key twice t return t the main display GPIB - Fr GPIB (IEEE488) cnnectins, the analyzer s serial cmmunicatins settings shuld be cnfigured as fllws: Press the menu key. In display windw use the Up/Dwn arrw keys t select Setup System ; Press enter. In display windw use the Up/Dwn arrw keys t select IEEE488 Address ; Press enter. In display windw use the Up/Dwn arrw keys t select a unique numeric address fr the analyzer; Press enter. Press the menu key twice t return t the main display. 09 January 2017 page 20 f 31 Cpyright SPEC

21 Input Cnnectin Direct input nly. Cnfigure the device t match yur electrical wiring cnfiguratin as fllws: Press the menu key. In display windw use the Up/Dwn arrw keys t select Channel Cnfiguratin ; Press enter. In display windw use the Up/Dwn arrw keys t select the ptin that matches yur wiring cnfiguratin. Optins are 1, 2, r 3 phases, 3 wire, r Independent Channels. Press enter. Press the menu key twice t return t the main display. Firmware Versin - Yu can examine the firmware versin installed in the meter as fllws: Press the menu key. In display windw use the Up/Dwn arrw keys t select Abut... ; Press enter. The firmware versin will be printed n the screen. Fr infrmatin n upgrading the firmware, cnsult the manufacturer. Press the menu key twice t return t the main display Multi-Channel Measurements Only ne f the Xitrn 2802 channels may be used at a time with PTDaemn Ykgawa WT Hardware Cnfiguratin PTDaemn requires a minimum WT210 firmware versin f 1.11 (released in March 2004) t functin prperly, since that is the first versin that supprts the crest factr features. The WT210 shuld be precnfigured using the keypad buttns prir t use with the PTDaemn sftware. First, reset the analyzer t factry default. RS232 - Fr RS-232 cnnectins, a cable with DB9 Female and DB25 Male cnnectrs and null mdem capability are required. The analyzer s serial cmmunicatins settings shuld be cnfigured fr a baud rate f 9600 as fllws: 1. Press the lcal key 2. in display windw C use the Up/dwn arrw keys t select 488.2; Press enter 3. In display windw A use the Up/dwn arrw keys t select hand 0 ; Press enter 4. In display windw B use the Up/dwn arrw keys t select Fr 0 ; Press enter 5. In display windw C use the Up/dwn arrw keys t select b 9600 ; Press enter GPIB - The GPIB address f the analyzer can be viewed and changed via the frnt-panel cmmand buttns. That address is used as the prt number fr use with the -g cmmandline argument with true GPIB adapters. Fr GPIB cnnectins with a virtual COM prt driver, see Appendix A. Cnnect the cnverter t the GPIB interface f the analyzer, and cnnect the cntrller. Input Cnnectin Only the direct input terminals f the WT210 are supprted by PTDaemn. Nte: Once PTDaemn 'cnnects' t the WT210, the frnt panel is 'lcked' t avid inadvertent changes during a SPECpwer benchmark run. T re-enable the frnt panel, exit PTDaemn and n 09 January 2017 page 21 f 31 Cpyright SPEC

22 the WT210 frnt panel, press the Stp (integrate) buttn then the Reset buttn. Frnt panel peratins shuld be enabled again Ykgawa WT310/310e and WT330/330e PTDaemn autmatically detects whether the analyzer is the standard r enhanced e versin and adjusts measurement uncertainty apprpriately. The enhanced uncertainty is calculated prperly starting with PTDaemn versin Hardware Cnfiguratin The WT310 shuld be precnfigured using the keypad buttns prir t use with the PTDaemn sftware. First, reset the analyzer t factry defaults. RS232 - Fr RS-232 cnnectins, a cable with null mdem capability is required. The analyzer s serial cmmunicatins settings shuld be cnfigured fr 9600 baud with LF terminatr. GPIB - The GPIB address f the analyzer can be viewed and changed via the frnt-panel cmmand buttns. That address is used as the prt number fr use with the -g cmmandline argument with true GPIB adapters. Fr GPIB cnnectins with a virtual COM prt driver, see Appendix A. Cnnect the cnverter t the GPIB interface f the analyzer, and cnnect the cntrller. Ethernet - PTDaemn supprts Ethernet cmmunicatin with the WT310 n Windws perating systems via use f Ykgawa s TMCTL DLL, which can be requested frm Ykgawa supprt channels r dwnladed frm Ykgawa s web site. With TMCTL installed n the cntrller system, use the -y cmmand-line parameter with the IP address as the prt parameter. Fr example, ptd-windws-x86 y The analyzer s IP cnfiguratin can be set frm the frnt panel cntrls. USB - PTDaemn supprts USB cmmunicatin with the WT310 n Windws perating systems via use f Ykgawa s TMCTL DLL and YKUSB driver, which can be requested frm Ykgawa supprt channels r dwnladed frm Ykgawa s web site. With TMCTL installed n the cntrller system, use the -y cmmand-line parameter with the analyzer s serial number as the prt parameter. Fr example, ptd-windws-x86 y 35 WX PTDaemn als supprts USB cmmunicatin n Linux, in this case using Agilent s USBTMC driver (included in sme recent Linux distributins). The analyzer will appear as a device such as /dev/usbtmc0, and PTDaemn treats that device just as any ther serial prt. Input Cnnectin Only the direct input terminals f the WT310 are supprted by PTDaemn Phase Measurements In rder t facilitate measurement f 3-phase pwer surces with the WT330, PTDaemn des sme wrk behind the scenes t make a 3-phase lad appear identical t a single-phase lad frm the user pint f view. Ranges (bth vltage and current) shuld be specified as the aggregate 3-phase values, and PTDaemn will prgram the individual channels as apprpriate. Fr example, a userspecified vltage r current will be divided by the square rt f 3, and the resulting value used fr a single channel s range. 09 January 2017 page 22 f 31 Cpyright SPEC

23 3.12 Ykgawa WT500 and WT Hardware Cnfiguratin GPIB The GPIB address f the analyzer may be set frm the frnt panel cnfiguratin menus. Fr GPIB cnnectins with a virtual COM prt driver, see Appendix A. Ethernet - PTDaemn supprts Ethernet cmmunicatin with the WT500 and WT1800 n Windws perating systems via use f Ykgawa s TMCTL DLL, which can be requested frm Ykgawa supprt channels r dwnladed frm Ykgawa s web site. With TMCTL installed n the cntrller system, use the -y cmmand-line parameter with the IP address as the prt parameter. Fr example, ptd-windws-x86 y The analyzer s IP cnfiguratin can be set frm the frnt panel cntrls. USB - PTDaemn supprts USB cmmunicatin with the WT500 and WT1800 n Windws perating systems via use f Ykgawa s TMCTL DLL and YKUSB driver, which can be requested frm Ykgawa supprt channels r dwnladed frm Ykgawa s web site. With TMCTL installed n the cntrller system, use the -y cmmand-line parameter with the analyzer s serial number as the prt parameter. Fr example, ptd-windws-x86 y 35 WX PTDaemn als supprts USB cmmunicatin n Linux, in this case using Agilent s USBTMC driver (included in sme recent Linux distributins). The analyzer will appear as a device such as /dev/usbtmc0, and PTDaemn treats that device just as any ther serial prt Multi-Channel Measurements The WT500 can als be used as 3-channel and 3-phase analyzers by PTDaemn, prviding the measurement data f the individual channels and the sum channel. Using the 3-Phase mde all calculated sum values f watts, vlts, amps etc. are valid. Using the 3-channel mde nly the sum value f pwer is calculated and prvides a valid result. Other sum values, e.g. vlts and amps are marked as invalid, because the frmulas fr thse calculatins may prvide incrrect results Phase Measurements In rder t facilitate measurement f 3-phase pwer surces with the WT330, PTDaemn des sme wrk behind the scenes t make a 3-phase lad appear identical t a single-phase lad frm the user pint f view. Ranges (bth vltage and current) shuld be specified as the aggregate 3-phase values, and PTDaemn will prgram the individual channels as apprpriate. Fr example, a userspecified vltage r current will be divided by the square rt f 3, and the resulting value used fr a single channel s range ZES LMG95, LMG450, LMG500 There are three types f ZES LMG pwer analyzers supprted by the SPECpwer PTDaemn. The LMG95 prvides ne-channel measurements, while LMG450 and LMG500 can be used fr 1-channel, 4-channel r 3-phase measurements Hardware Cnfiguratin After cnnecting and turning n the ZES LMG accrding t the manufacturer s manual the analyzer has t be cnfigured crrectly. Nte: The analyzer can be cnnected t the CCS via the CmA interface using a 1:1 cable r via the CmB interface using a null mdem cable (manufacturer s manual sectin ). In rare 09 January 2017 page 23 f 31 Cpyright SPEC

24 cases when measuring in multichannel mde and lts f data are transferred yu may see cnnectin timeuts running the PTDaemn. This might be caused by pr quality f the serial r null mdem cable. Exchanging the serial r null mdem cable against a higher quality ne can fix this prblem. Fr high data transfer rates between LMG pwer analyzers and CCS it is recmmended t attach a USB-serial adapter t the pwer analyzer and t use a USB cable t cnnect t a CCS USB prt. Als reducing the baud rate f the analyzer t 9600 and setting the PTDaemn baud rate cnfiguratin accrdingly via the B ptin might help. Befre cnfiguring a LMG analyzer reset the device t default parameters by pressing the tw lwer sftkeys when switching it n. In general the analyzer stres the actual settings, s this has always t be dne after using it in an envirnment ther than SPEC benchmarks r tls. The ZES LMG s RS232 interface has t be cnfigured fr Baud, <lf>, Ech ff, RTS/CTS befre use with PTDaemn. Instructins hw t cnfigure the interface are described in the manufacturer s manual (chapter IF/IO). The baud rate cnfigured with PTDaemn via B ptin and cnfigured n the ZES analyzer must always be the same. Nte: Baud is the default setting f ZES analyzers in PTDaemn versins higher than The default baud rate f PTDaemn versins and lwer is The GPIB interface is available and supprted by PTDaemn, but nt yet tested n ZES LMGs. The ZES LMGs have ne input cnnectin fr each available channel. Fr physical cnnectin read the manufacturer s manual (chapters 1-3). There are n restrictins t specific firmware versins. Nevertheless it is recmmended t update t the latest firmware versin available n the manufacturer s web site. During measurement perids the analyzer buttns are lcked by PTDaemn. If PTDaemn is nt stpped via X cmmand, the analyzer has t be turned ff and n again befre reuse Range Setting and Uncertainty Calculatin Be careful in selecting the crrect ranges which fit best t yur measurement envirnment t avid inaccurate r even invalid values. Uncertainty calculatin fr ZES LMGs by PTDaemn is nly available if the measured values during the benchmark lie in between 10% and 110% f the cnfigured range, s these limits have t be kept fr cnfrming measurements. Instructins hw t cnfigure the range setting manually are described in the manufacturer s manual (chapter 5.2 Measuring ranges(range)). All accepted ZES LMG pwer analyzers supprt range setting via PTDaemn cmmand interface r PTDaemn input parameters. All accepted ZES LMG pwer analyzers prvide uncertainty checking by the PTDaemn Multi-Channel Measurements The ZES LMG450 and ZES LMG500 analyzers can als be used as 4-channel and 3-phase analyzers by PTDaemn, prviding the measurement data f the individual channels and the sum channel. Using the 3-Phase mde all calculated sum values f watts, vlts, amps etc. are valid. Using the 4- channel-mde nly the sum value f pwer is calculated and prvides a valid result. Other sum values, e.g. vlts and amps are marked as invalid, because in general the frmulas fr thse calculatins may prvide incrrect results. 09 January 2017 page 24 f 31 Cpyright SPEC

25 Nte: In case f 3-phase measurements the ranges (bth vltage and current) f each individual channel can be estimated by the fllwing frmulas (see als chapter 2.9): Estimated individual channel ampere range= Estimated individual channel vlt range= Expected maximum (sum) ampere / sqrt(3) Expected maximum (sum) vlt / sqrt(3) When setting the ranges manually all individual channels f the analyzer have t be cnfigured separately. The PTDaemn allws setting the ranges f all individual channels in ne step: Cnfiguring the estimated ampere/vlt range withut defining any channel id results in the same range setting fr all individual channels. With future versins f PTDaemn the verall range will be defined as the aggregated 3-phase range, meaning the prduct range f the individual channel * sqrt(3). Then the individual range f each channel will be recalculated and autmatically set t this calculated value. 09 January 2017 page 25 f 31 Cpyright SPEC