Xantrex Technology GPIB-M-XPD manual

Operating Manual Internal GPIB-M Interface: Multichannel Functionality for Programmable DC Power Supplies GPIB-M-XPD GPIB-M-XT GPIB-M-HPD GPIB-M-XHR GPIB-M-XFR GPIB-M-XFR3[...]

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Operating Manual for Internal GPIB-M Interface: Multichannel Functionality for Programmable DC Power Supplies[...]

ii Operating Manual for Multichannel Functiona lity (GPIB-M) Limited W arranty What does this warranty cover and how long does it last? This Limited W arranty is provid ed by Xantrex T echnology , Inc. (“Xantrex”) and covers defects in workmanship an d materials in your GPIB-M Interface Card . This warranty lasts for a W arranty Period of 5 yea[...]

Release 2.1 iii Direct returns may be performed accordi ng to the Xantrex Return Material Authorization Policy described in your pr oduct manu al. For some products, Xantrex maintains a network of regional Authorized Service Centers. Call Xantrex or check our website to see if your product can be repaired at one of these facilities. In any warranty[...]

iv Operating Manual for Multichannel Functiona lity (GPIB-M) Disclaimer Product THIS LIMITED W ARRANTY IS THE SOLE AND EXCLUSIVE W ARRANTY PROVIDED BY XANTREX IN CONNECTION WITH YO UR XANTREX PRODUCT AND IS, WHERE PERMIT TED BY LAW , IN LIEU OF ALL OTHER W ARRANTIES, CONDITIONS , GUARANTEES, REPRESENT A TIO NS, OBLI GA TIONS AND LIABILITIES, EXPRES[...]

Release 2.1 v Information WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, UNLESS SPECIFICALL Y AGREED TO BY IT IN WRITING, XANTREX a. MAKES NO W ARRANTY AS TO THE ACCU RACY , SUFFICIENCY OR SUIT ABILITY OF ANY TECHNICAL OR O THER INFORMA TION PROVIDED IN MANUALS OR OT HER DOCUMENT A TION PROVIDED BY IT IN CONNECTION WITH THE PRODUCT ; AND b. A SS[...]

vi Operating Manual for Multichannel Functiona lity (GPIB-M) Power Supply Safety W arnings, Cautions, and Notes W arnings, cautions, and notes are defined and formatted in this manual as shown below . W ARNING—High Energy and High V o lt age Exercise caution when using and calibrating a power supply . High energy levels can be stored at the outpu[...]

Release 2.1 vii About This Manual This operating manual is for the inte rnal Multich annel In terface (GPIB-M), a microprocessor -controlled option card for your DC output power supply . This manual provides you with descriptions and specifications, user options, and configuration instructions, in addition to a command set which enables you to mana[...]

About This Manu al viii Operating Manual for Multichannel Functiona lity (GPIB-M) Appendix B SCPI Command Reference Describes the Standard Commands for Programmable Instrume nts (SCPI) command s supported by various produ cts with the Multichannel Interface installed. Appendix C Error Messages Describes the error message s that could appear during [...]

Release 2.1 ix Table of Contents About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii i List of Figures . . . . . . . . . . . . . . . . . . . . . . . [...]

x Operating Manual for Multichannel Functiona lity (GPIB-M) Power Supply Regulation Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Constant Voltage (CV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Constant Current (CC) . . . . . . . . . . . . . . . . . . . . . . [...]

Release 2.1 xi SHUTdown Sub-Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Protection SHUTdown Sub-Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Remote CONtrol Sub-Register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Current SHare Sub-[...]

xii Operating Manual for Multichannel Functiona lity (GPIB-M) Appendix B. SCPI Command Reference Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 Codes and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97 IEEE 4[...]

Release 2.1 xiii List of Tables Table 1.1 Specifications for HPD 300 W with GPIB-M or CANbus . . . . . . . . . . . 19 Table 1.2 Specifications for XFR 1200 W with GPIB-M or CANbus . . . . . . . . . . 20 Table 1.3 Specifications for XFR 2800 W with GPIB-M or CANbus . . . . . . . . . . 21 Table 1.4 Specifications for XHR 10 00 W with GPIB-M or CANbus[...]

List of T ables xiv Operating Manual for Multichannel Functiona lity (GPIB-M) Table B.11 Protection Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 Table B.12 User Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 Table B.13 Output State . . . . . . . . . . . . . .[...]

Release 2.1 xv List of Figures Figure 2.1 XFR and XHR Power Supply Front Panel wi th GPIB-M Interface . . . . 26 Figure 2.2 XPD Power Supply Front Panel with GPIB Interface . . . . . . . . . . . . . . 27 Figure 2.3 XT and HPD Power Supply Front Panel with GPIB Interface . . . . . . . 27 Figure 2.4 XFR 2800 Watt Power Supply Rear Panel with GPIB-M I[...]

List of Figures xvi Operating Manual for Multichannel Functiona lity (GPIB-M)[...]

Release 2.1 17 Section 1. Features and S pecifications Description The internal GPIB-M interface card allows you to operate your power su pply from a computer controller via the IEEE-488 communications bus. The GPIB-M interface allows complete re mote programming of your power supply , including status reporting, settings quer y , and service reque[...]

Features and Specifications Features and Functions 18 Operating Manual for Multichannel Functiona lity (GPIB-M) Programmable Functi ons • Output voltage and current • Soft limits for vo ltage and current • Overvoltage protection • Output enable/disable • T en , 99-step auto sequences for easy programming of complex test routines • T en [...]

Features and Specifications Specifications Release 2.1 19 Specifications The specifications in this section are warranted at 25°C ±5°C unless otherwise specified. All specifications are subject to change without notice. T able 1.1 S pecifications for HPD 300 W with GPIB-M or CANbus Models 15-20 30-10 60-5 Program Resolution V oltage Current 2.4m[...]

Features and Specifications Specifications 20 Operating Manual for Multichannel Functiona lity (GPIB-M) Ta b l e 1 . 2 S pecif ications for XFR 1200 W with GPIB-M or CANbus Models 7.5-140 12-100 20-60 35-35 40-30 Program Resolution V oltage Current 1.16mV 19.6m A 1.8mV 14mA 3.08mV 8.4mA 5.4mV 5.4mA 6.2mV 4.2mA Program Accuracy 1 V oltage Current 10[...]

Features and Specifications Specifications Release 2.1 21 T able 1.3 S pecifications for XFR 2800 W with GPIB-M or CANbus Models 7.5-300 12-220 20-130 33-85 40-70 Program Resolution V oltage Current 1.16mV 42.0m A 1.8mV 30.8mA 3.08mV 18.2mA 5.1mV 13.0mA 6.2mV 9.8mA Program Accuracy 1 V oltage Current 10mV ±0.12% 900mA ±0.1% 50mV ±0.12% 750mA ±0[...]

Features and Specifications Specifications 22 Operating Manual for Multichannel Functiona lity (GPIB-M) Ta b l e 1 . 4 S pecifications for XHR 1000 W with GPIB-M or CANbus Models 7.5-130 20-50 33-33 40-25 60-18 Program Resolution V oltage Current 1.16mV 42.0m A 1.8mV 30.8mA 3.08mV 18.2mA 6.2mV 9.8mA 9.2mV 6.44mA Program Accuracy 1 V oltage Current [...]

Features and Specifications Specifications Release 2.1 23 T able 1.5 S pecifications for X PD 500 W with GPIB-M or CANbus T able 1.6 S pecifications for X T 60 W with GPIB-M or CANbus Models 7.5-67 18-30 33-16 60-9 120-4.5 Program Resolution V oltage Current 1.2mV 5.2mA 4.6mV 3.6mA 5.1mV 2.9mA 9.3mV 1.3mA 18.6mV 0.7mA Program Accuracy 1 V oltage Cu[...]

Features and Specifications Specifications 24 Operating Manual for Multichannel Functiona lity (GPIB-M)[...]

Release 2.1 25 Section 2. Inst allation and Configuration Introduction T o use this product, you must have the following equipment: • a compatible model of DC output power suppl y • IEEE-488 connector and cable • computer with an IEEE-488 interface card • Computer-based communications software package • parallel CANbus cables (t o connect[...]

Installa tion and Configuration Initial Inspection 26 Operating Manual for Multichannel Functiona lity (GPIB-M) Figure 2.1 XFR and XHR Power Supply Fron t P anel with GPIB-M Interface (XFR 1200 W att mode l shown) ! CAUTION Use proper static control techniques to av oid damage to static-sensitive components on the printed circuit board. Address LED[...]

Inst allation and Configuration Initial Inspection Release 2.1 27 Figure 2.2 XPD Power Supply Front Pa nel with GPIB Interface Figure 2.3 XT and HPD Power Supply Front Panel with GPIB Interface Service Request LED (SRQ) Remote LED (R EM) Shutdown LED (S/D) Remote Mode (REM) LED Service Request (SRQ) LED Over V oltage Protection (OVP) LED OVP Potent[...]

Installa tion and Configuration Initial Inspection 28 Operating Manual for Multichannel Functiona lity (GPIB-M) Figure 2.4 XFR 2800 W att Power Supply Rear Panel with GP IB-M Interface Figure 2.5 XFR 1200 W att Power Supply Rear Panel with GP IB-M Interface 1 GPIB CANBUS USER LINES 1 CANBUS GPIB USER LINES[...]

Inst allation and Configuration Initial Inspection Release 2.1 29 Figure 2.6 XHR Power Supply Rear Pane l with GP IB-M Interface Figure 2.7 XPD Power Supply Rear Pa nel with GPIB- M Interface GPIB CANBUS USER LINES CANBUS USER LINES GPIB[...]

Installa tion and Configuration Initial Inspection 30 Operating Manual for Multichannel Functiona lity (GPIB-M) Figure 2.8 XT/HPD Power Supply Rear Panel with GPIB-M Interface ! CAUTION Use proper static control techniques to av oid damage to static-sensitive components on the printed circuit board CANBUS USER LINES GPIB[...]

Inst allation and Configuration Basic Setup Procedure Release 2.1 31 Basic Setup Procedure This procedure can be used as a quic k reference for those familiar with the configuration requirements for the GPIB-M interface as installed in the DC power supply . IEEE-488 Controller Connection Connect the GPIB cable to the supply at connector on the rear[...]

Installa tion and Configuration Basic Setup Procedure 32 Operating Manual for Multichannel Functiona lity (GPIB-M) Setup Procedure For those who want more inform ation, each step refers to more detailed procedures located in subsequent sections. 1. Power ON Power on the unit. 2. Configure Computer Contr oller Configure the controller to match the p[...]

Inst allation and Configuration Basic Setup Procedure Release 2.1 33 T able 2.1 Remote Mode Powe r On Conditions Power On Service Request The Power On Service Request setting cau ses the power supply to send a service request to the computer cont roller when the po wer supply is turned on or when it re-initializes after a momentary power interru pt[...]

Installa tion and Configuration Configure for GPIB Operation 34 Operating Manual for Multichannel Functiona lity (GPIB-M) Configure for GPIB Operation The power supply is ready for GPIB communicati on when it leaves the factory , but you may change any of the control settings . The default remote control setting is GPIB, address 2. Change Remote Co[...]

Inst allation and Configuration Configure for Multichannel Operation Release 2.1 35 Configure for Multichannel Operation Multichannel Connections Y ou may remotely control up to 50 powe r supplies from one GPIB interface by using multichannel addressing via the CANbus. One power supply will be connected to a PC via G PIB. All other power supplies a[...]

Installa tion and Configuration Configure for Multichannel Operation 36 Operating Manual for Multichannel Functiona lity (GPIB-M) CANbus The CANbus port consists of two 4-pin modular “hand set” jacks to support da isy chain connections. The CAN (Controller Area Network) is an ISO standard (ISO1 1898) for a serial co mmunication network. Ta b l [...]

Inst allation and Configuration Configure for Multichannel Operation Release 2.1 37 Setup See Figure 2.10 . 1. Connect power supplies to be controlled via the CANbus network. Conn ect the power supplies in a daisy chain by linki ng the first power supply to the second using one cable, and then th e second to the third using a second cable and the s[...]

Installa tion and Configuration Configure for Multichannel Operation 38 Operating Manual for Multichannel Functiona lity (GPIB-M) A power supply will attempt to connect to the network: • on power up, and • when the multichannel address is changed. The power supply will successf ully connect if there are no other power supplies on the network wi[...]

Inst allation and Configuration Configure for Multichannel Operation Release 2.1 39 Broadcasting Commands Y ou can specify a channel address of "0" to broadcast a command to all power supplies connect via CANbus. Broadcast commands are useful in set up and operation. Example: Set all power supplies to remote mode: SYST0:REM:STAT REM T urn[...]

Installa tion and Configuration User Lines 40 Operating Manual for Multichannel Functiona lity (GPIB-M) User Lines The user lines connector , locat ed on the GPIB-M interface rear panel, provides several signals to increase your operating control of the supply . These signals are dependent on the operator's design and uses. The operatio n of t[...]

Inst allation and Configuration User Lines Release 2.1 41 User Lines Connection (XT , HPD, XPD) Figure 2.1 1 User Signals Conne ctor (XT , HPD and XPD) Use a standard 8-conn ector RJ45 connector and data cable to connect to the user lines. Add a ferrite block to reduce radiated em ission. The one inch square ferrite block with built-in housing clip[...]

Installa tion and Configuration User Lines 42 Operating Manual for Multichannel Functiona lity (GPIB-M) Figure 2.13 Schematic For User Line Interface Vf = 1.3V TYP, 1.5V MAX If = 10mA Recommended, 90mA MAX CNY17-2 CNY17-2 508 Ohm 0.4W 508 Ohm 0.4W CNY17-2 CHASSIS POTENTIAL ISOLATED USER LINES CNY17-2 USER LINE S[...]

Release 2.1 43 Section 3. Operation Overview Once you have installed the power supp ly and connected both the AC in put power and the load as explained in Section 2 , the power supply is in its default configuration and is ready for operation. One power supply must be connected via GPIB. Additional units may be controlled via the CANbus port whic h[...]

Operation Power Supply Operating States 44 Operating Manual for Multichannel Functiona lity (GPIB-M) Power Supply Operating St ates The power supply has 5 operating states: • Power-On • Output Shutdown • Soft Start • Normal Operation • Calibration Power-On This is the period between the time that AC power is applied to the supply (AC brea[...]

Operation Power Supply Regulation Modes Release 2.1 45 Power Supply Regulation Modes The power supply h as 2 regulation modes while in the Normal Operation S tate: • Constant V oltage (CV) • Constant Current (CC) The CV , CC LEDs on th e front panel indica te the regulation mode. Const ant V oltage (CV) In this mode, the supply’ s output volt[...]

Operation Remote Control Modes 46 Operating Manual for Multichannel Functiona lity (GPIB-M) Remote Control Modes The power supply must be in remote mode to execute commands. The remote mode is indicated by the front panel remote st atus LED. A power su pply will respond to queries when in local mode, but will genera te an error when a command is re[...]

Operation Front Panel LEDs Release 2.1 47 Front Panel LEDs The status LEDs on the front panel give an instant indication to the status of the power supply . In addition, the XFR and XHR series powe r supplies have the following additional indicators. LED Description REM Unit is operating under remote control. Remote settings apply . SRQ Unit is req[...]

Operation Power Supply Operation 48 Operating Manual for Multichannel Functiona lity (GPIB-M) Power Supply Operation This section describes how to configure and operate the power supply . For a complete list of commands and remote functionality , see Appendix B. “SCPI Command Reference” . Read “Understanding SCPI Commands” on page 99 for a [...]

Operation Power Supply Operation Release 2.1 49 The functionality of the hardware protectio n circuits (OVP , OTP , ACFail) remains the same in local mode. Power On Remote St ate (XFR/XHR and XPD onl y) Y ou may set whether the po wer supply powers on in remote or local mode SYST :REM:PON:ST A T <on-of f-state> Enable Output When the output i[...]

Operation Power Supply Operation 50 Operating Manual for Multichannel Functiona lity (GPIB-M) Readback T o check the voltage or current outp ut of the power supply , use the comma nds: MEAS:VOLT? MEAS:CURR? Units are in volts and amps, respective ly . Example: T o set voltage to 5.5V and curre nt limit to 100A, send the co mmand: : VOLT 5.5; :CURR [...]

Operation Power Supply Operation Release 2.1 51 Configure Output Protection Five configurable prot ection mechanisms are available: • OVP: Over-V oltage Protection. Factory default = 0V (d isabled) • UVP: Under-V oltage Protect ion. Factory default = 0V (disabled) • OCP: Over-Current Protection . Factory default = 0A (disabled) • UCP: Under[...]

Operation Power Supply Operation 52 Operating Manual for Multichannel Functiona lity (GPIB-M) OVP The over voltage pro tection le vel is set with a command for remote mode and with the front panel potentiometer for local mo de. If operating in remote mode, and the OVP is disabled by setting the trip level to 0, a second hardware OVP circuit, fixed [...]

Operation Power Supply Operation Release 2.1 53 Additional Protections Other protection mechanisms designed to protect the power supply are: • AC Off: Disables the output if the AC line drops below the acceptable range. • Sense Protection: Disables the output wh en the internal sense circuit is tripped by either reversed pol arity at the output[...]

Operation Power Supply Operation 54 Operating Manual for Multichannel Functiona lity (GPIB-M) Clear Protection Event If the unit has shut down, resume operation by sen ding the " OUTP ON " command. T o support older revisions of firmware (1.5 and older), [:]OUTPut[<channel>]:PROTection:C LEar command will still be parsed and passed [...]

Operation Power Supply Operation Release 2.1 55 User Settings (Save and Recall) If you have a frequent or constant need fo r a specific voltage and current output, you can save these setpoints in the power supply’ s memory as a user setting. Once a setting is stored, it remains in the power s upply’ s memory after the unit is powered off. T en [...]

Operation Power Supply Operation 56 Operating Manual for Multichannel Functiona lity (GPIB-M) This will save factory default settings to a user setting location, replacing any setting that was previously saved there. Example: T o save settings, set up the power supply with all required settings (we recommend that you do this right after r ecalling [...]

Operation Power Supply Operation Release 2.1 57 Power On Output S t ate (XFR/XHR only) Y ou may also change the ou tput state whether the output is enabled or disabled at power on. T o change the power on at output state: OUTP:PON:STAT [ON|OFF|1|0] Whether the unit powers on with output en abled is a function of both the state at power off and this[...]

Operation Power Supply Operation 58 Operating Manual for Multichannel Functiona lity (GPIB-M) Read Error Messages The error queue holds up to 50 error messag es. Once each message has been read, it is cleared from the system. T o read fr om the error queue: SYST:ERR? This command returns an error code and message from the error queue. For example: [...]

Operation Power Supply Operation Release 2.1 59 T o set up Auxiliary line A: OUTP:AUXA:SOUR <aux-line-mnemonic > T o set up Auxiliary line B: OUTP:AUXB:SOUR <aux-line-mnemonic > The choices for <aux-line-mnemon ic> are listed above. T o check the state of the line: OUTP:AUXA:STAT? OUTP:AUXB:STAT? This command returns a 1 or 0. If [...]

Operation Auto Sequencing 60 Operating Manual for Multichannel Functiona lity (GPIB-M) Auto Sequencing Auto Sequencing allows users to program a sequence for automated operation. Up to 10 program mable sequence s may be stored with up to 99 steps per s equence. Each step can be p rogrammed to set the voltage setpoint, curre nt setpoint, and OVP lev[...]

Operation Auto Sequencing Release 2.1 61 Editing the Sequen ce T o edit an existing step or to progra m new steps, use the following commands: PROG:STEP<step_number>[:EDIT] [[[ [<voltage>] ,<current>],<OVP_level>],{<time>| TRIG}] Any of the step parameters may be omitted, in which case the default parameters will be us[...]

Operation Auto Sequencing 62 Operating Manual for Multichannel Functiona lity (GPIB-M) Setting Sequence Repetitions Set the number of times a sequence will repeat before stopping execution. PROG:REP {ONCE |<sequence_count>| FOR|INF} • ONCE will run the sequence once and return it to its ST OP condition. • <sequence_count> ranges fro[...]

Operation Auto Sequencing Release 2.1 63 Querying the number of step s T o query the number of steps that have been programmed: PROGram:STEP:COUNt? Deleting a Sequence Deleting Sequences If you no longer need a sequence, select it with the PROG:NAME command and then delete it with the following: PROGram:DELete Y ou can also use the following to del[...]

Operation Auto Sequencing 64 Operating Manual for Multichannel Functiona lity (GPIB-M) Operation T o run, stop or pause a sequ ence, use the fo llowing command: PROGram:STATe [RUN|PAUSe|STOP] • Once the programmed sequence has been selected, you can start it by setting the state to RUN, b y sending th e command PROG:STAT RUN . • At any time you[...]

Operation Auto Sequencing Release 2.1 65 Set V , I, and P Limit s The voltage, current a nd power setpoints can be limited to less than the supply rating range to match the tolerance of con nected equipment or any ot her criteria you may have. Once the limits have been changed from th e supply’ s default rated output, settings outside this range [...]

Operation Auto Sequencing 66 Operating Manual for Multichannel Functiona lity (GPIB-M) T riggering Commands T rigge rs are event-driven signals that instruct power supplies to change their output. T riggering provides a method to control chan ges in the power supp ly’ s output and to program several power supplies to react at the same time. T rig[...]

Operation Auto Sequencing Release 2.1 67 Slew Rate The slew rate is calculated as a function of change in the output voltage and a given time interval. The maximum slew rate is 1% rated voltage/150us. The slew rate is saved upon power of f and restored at power on. Output ON/OFF and shutdown are not affected by the programmable slew ra te. These fu[...]

Operation Auto Sequencing 68 Operating Manual for Multichannel Functiona lity (GPIB-M) Example: Set a slew rate of 100V/10s for a 100V -60A power supply . This slew rate is 1V/0.1s, which is within the acceptable range. Send the co mmands: “:VOLT:SLEW:STEP 1” , and “:VOLT:SLEW:INT 100ms” Using smaller steps will result in a smoother curve. [...]

Release 2.1 69 Section 4. S t atus Registers Overview The Status Regi ster structure is mandat ory for SCPI and IEEE 488.2 compliance. The register bits are defined by the SCPI and IEEE 488.2 standards. Each status register has a Condition, Event, and Enable register and transition filters. See “S tatus Register Commands” on page 81 for command[...]

St atus Registers Overview 70 Operating Manual for Multichannel Functiona lity (GPIB-M) The Operation Status data structure ha s the operation status register and 5 sub-registers to represent regulation, shutdown, protection shutdown, remote control, and current sh aring modes. Each of the sub-registers is summarized in a summary bit. Figure repres[...]

St atus Registers Overview Release 2.1 71 Figure 4.1 Operation S tatus Registers PROTec tion S umma ry INTer lock CO MMan d Not Used 1 0 3 2 5 4 7 6 9 8 11 10 13 12 15 14 Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used Not Used + STATus:OPERa tion:SHUTdown Reserved Reserved GPIB Cont rol GPIB Contr[...]

St atus Registers Overview 72 Operating Manual for Multichannel Functiona lity (GPIB-M) T able 4.1 OPERation S tatus Register REGulating Sub-Register This describes the regulating mode. If none of these bits is active, the output unregulated (UNRegulated) bit is active in the questionable status register . T able 4.2 REGulating Sub-Register Bit Bit[...]

St atus Registers Overview Release 2.1 73 SHUTdown Sub-Register The Shutdown sub-register indicates the cause of the power supply shutdown. More than one bit may be active, and multiple actio ns will be required to enable the output. The protection shutd own sub-register indi cates which protection mechanisms have caused the power supply to shutdow[...]

St atus Registers Overview 74 Operating Manual for Multichannel Functiona lity (GPIB-M) T able 4.5 Remote CONtrol Sub-Register Current SHare Sub-Register This register shows the state of the curre nt share configuration, which can be set through the SCPI command SOURce:COMBine:CSHare:MODE. T able 4.6 Current SHare Sub-Re gister QUEStionable Stat us[...]

St atus Registers Overview Release 2.1 75 Figure 4.2 Questionable S tatus Register s Not Used VOLTage Summary CURRent Summary 1 0 3 2 5 4 7 6 9 8 11 10 13 12 15 14 Over T emper ature Not Used Not Used Not Used Not Used Not Used UNRegulated Not Used Not Used AC Fail CALibration Not Used + Over VOLtage Under VOLtage 1 0 3 2 5 4 7 6 9 8 11 10 13 12 15[...]

St atus Registers Overview 76 Operating Manual for Multichannel Functiona lity (GPIB-M) T able 4.7 QUES tio nable S tatus Register VOL T age Sub-Register This shows whether the present voltage level is over or under the specified trip limit. T able 4.8 VOL T age Sub-Register Bit Bit Weight Bit Name Description 0 1 VOL T age Summary Reflects a summa[...]

St atus Registers Overview Release 2.1 77 CURRent Sub-Register This shows whether the present current level is over or under the specified trip limit. T able 4.9 CURRent Sub- Register St andard Event St atus Register The standard event status register sets bits for specific events during power supply operation. All bits in the standard event st atu[...]

St atus Registers Overview 78 Operating Manual for Multichannel Functiona lity (GPIB-M) T able 4.10 St andard Event S tatus Register Bit Bit Weight Bit Name Description 0 1 Operation Complete (OPC) Set if *OPC command has been received and all pending operations have been completed. The message, Event –800 Operation Complete, is loaded into the E[...]

St atus Registers Overview Release 2.1 79 St atus Byte The Status byte register contains the STB and RQS(MSS) messages as defined in 488.1. The user can read the status byte register using a 488.1 serial poll or the 488.2 *STB? common command. If the user sends a serial poll, bit 6 will respond with Request Service (RSQ). The va lue of the st atus [...]

St atus Registers Overview 80 Operating Manual for Multichannel Functiona lity (GPIB-M) Master Summary St atus (MSS) The Master Summary Status message indicates that the power supply has at least one reason for requesting service. Although the MSS message is sent in bit position 5 of the response to *STB?, it is not sent in r esponse to a serial po[...]

St atus Registers Status Register Commands Release 2.1 81 St atus Register Commands In the following sections <s tatus-enable> is a value from 0 to 32767 representing a 15-bit register mask. SCPI St atus Commands Preset St a tus STATus[<channel>]:PRESet Configures the status data structures to ensure that certain events are reported at [...]

St atus Registers Status Register Commands 82 Operating Manual for Multichannel Functiona lity (GPIB-M) IEEE 488.2 St atus and Event Commands Clear St atus Command Clears all Event Registe rs, including the St atus Byte, the Standard Event S tatus and the Error Queue. *CLS or the multichannel equivalent: STATus<channel>:CLEar St andard Event [...]

St atus Registers Status Register Commands Release 2.1 83 T o clear the Service Req uest Enable Register send "* SRE 0." The Powe r-on Sta tus Clear command also determines if the Service Request Ena ble Register is cleared at power-on. A cleared register does not allow status information to generate a service request. E.g. Sending "[...]

St atus Registers Status Register Commands 84 Operating Manual for Multichannel Functiona lity (GPIB-M) or the multichannel equivalent ST A T us<channel>:SBYT e[:EVENt]? Power-on S tatus Clear The Power -On S tatus Clear c ommand contro ls the automatic power-on cleari ng of the Service Request Enable Register , the St andard Event S tatus En[...]

St atus Registers Status Register Commands Release 2.1 85 Operation St atus Register Commands Query Operation S tatus Register Condition STAT[<channel>]:OPER:COND? Query Operation S tatus Register Event STAT[<channel>]:OPER[:EVEN]? Enable Operation S tatus Register STAT[<channel>]:OPER:ENAB <status-enable> Set Operation S ta[...]

St atus Registers Status Register Commands 86 Operating Manual for Multichannel Functiona lity (GPIB-M) STAT[<channel>]:OPER:SHUT[:EVEN]? Enable Shutdown Sub-Register STAT[<channel>]:OPER:SHUT:ENAB <s tatus-enable> Set Shutdo wn Positive T ransiti on Filter STAT[<channel>]:OPER:SHUT:PTR <st atus-enable> Set Shutdown Ne[...]

St atus Registers Status Register Commands Release 2.1 87 Set Remote Contr ol Positive T ransition Filter STAT[<channel>]:OPER:RCON:PTR <st atus-enable> Set Remote Control Negative T ransition Filter STAT[<channel>]:OPER:RCON:NTR <st atus-enable> Current Share Sub-Register Commands Query Current Shar e Register Condition STA[...]

St atus Registers Status Register Commands 88 Operating Manual for Multichannel Functiona lity (GPIB-M) V oltage Sub-Register Commands Query V oltage Sub-Register Condition STAT[<channel>]:QUES:VOLT:COND? Query V oltage Sub-Register Event STAT[<channel>]:QUES:VOLT[:EVEN]? Enable V oltage Sub-Register STAT[<channel>]:QUES:VOLT:ENAB[...]

Release 2.1 89 Section 5. Current Sharing Overview The current sharing functio n allows power supplies to current share between units connected in parallel. Current sharing ca n use a maximum of 5 supplie s. All power supplies must be the same model. Every unit must have a unique address. See “Configure for Multichannel Operation” on page 35 . [...]

Current Sharing Overview 90 Operating Manual for Multichannel Functiona lity (GPIB-M) Theory of Operation Power supplies may be connec ted in parallel to supply a larg e current to a load. T ypically , bec ause of dif ferences in the load connections, each power supply may provide different amounts of current to the load. When multiple power suppli[...]

Current Sharing Operation Release 2.1 91 Operation Once a current sharing network is setup, you may adjust the voltage setpoint on the master . The master will automatically adju st the setpoints of the slave units to equalize the curre nt output of all units. Y ou may a lso disable or enable the output o f the master , automatically disabling or e[...]

Current Sharing Operation 92 Operating Manual for Multichannel Functiona lity (GPIB-M)[...]

Release 2.1 93 Appendix A. GPIB Overview This power supply can be programmed from a remote terminal using a General Purpose Interface Bus (GPIB) interface. Communications over the GPIB interface meet IEEE 488.2 standards and are SCPI compliant. Codes and St andard s The GPIB interface of the this Prog rammable DC Power Supply has been implemented a[...]

GPIB Protocol Specifications 94 Operating Manual for Multichannel Functiona lity (GPIB-M) Protocol Specifications Multiline Control Functions IEEE 488.2 (Section 5) requires specific Device Interface Functions. Ta b l e A . 1 Multiline Control Functions Interface Functions IEEE 488.1 (Section 2). Ta b l e A . 2 Interfac e Functions Function Mnemoni[...]

GPIB Electrical Specifications Release 2.1 95 Electrical Specifications Drive r Requirement s IEEE 488.2 (Section 3. 3). Ta b l e A . 3 Driver T ypes for Interface Lines Driver Specifications for 1 megaby te/second: • Low State: Output voltage < +0.5V at +48mA sink current • High S tate: Ou tput V oltage (3 stat e) ≥ +2.4V at -5.2mA The Ou[...]

GPIB Performance Specifications 96 Operating Manual for Multichannel Functiona lity (GPIB-M)[...]

Release 2.1 97 Appendix B. SCPI Command Reference Overview This appendix provides a summary of th e Standard Commands for Programmable Instruments (SCPI) that are supported by the this Pr ogrammable Interface Card. Codes and St andard s This power supply conforms to th e following international standards: • IEEE Std 488.2-1992 “IEEE S tandard C[...]

SCPI Command R eference IEEE-488.2/SCPI Syntax and Style 98 Operating Manual for Multichannel Functiona lity (GPIB-M) IEEE-488.2/SCPI Synt ax and Style Parameters Unit s of Measure and Multipliers The default units of measure include: • V (V olt – voltage) • A (Ampere – current) • W (W att – power) • S (seconds – time) The supported[...]

SCPI Command Reference Understanding SCPI Commands Release 2.1 99 Underst anding SCPI Commands SCPI Command Hierarchy SCPI is an ASCII-based command language designed for use in test and measurement equipment. The command st ructure is organized arou nd common roots, or nodes, which are the building b locks of SCPI subsystems. An example of a commo[...]

SCPI Command R eference Understanding SCPI Commands 100 Operating Manual for Multichannel Functiona lity (GPIB-M) The following punctu ation is sent wi th the command string: • Colons (:) separate command keywords from lower-level keywords. For example, CAL:CURR:STAT . • Blank spaces separate comma nd keywords from param eter values. For exampl[...]

SCPI Command Reference Understanding SCPI Commands Release 2.1 101 Using Queries A question mark lets you query the present value for most parameters. For example, to query the current calibration state use: CAL:SEC:STAT? Most commands that include a parameter can be queried to determine the present setting. Y ou can also us e the following to quer[...]

SCPI Command R eference Understanding SCPI Commands 102 Operating Manual for Multichannel Functiona lity (GPIB-M) Parameter T ypes Several different data types are defined for use in program messages and response messages. Boolean Parameters Boolean parameters are single binary cond itions such as 1 and 0, or ON and OFF . The following is an exampl[...]

SCPI Command Reference SCPI Command Summary Release 2.1 103 SCPI Command Summary The SCPI commands supported by the this Programmable Power Supply are described in the tables in the remainder of this section. These tables use the following column headings: • Function The commonly used name for the function • SCPI Command The full command in lon[...]

104 Operating Manual for Multichannel F unctionality (GPIB-M) SCPI Command Reference SCPI Command Summary Ta b l e B . 1 IEEE 488.2 Commands Function SCPI Command Description Query Clear S tatus *CLS [:]STATus[<channel>]:CLEar Clears the status data structures. N/A S tandard Event S tatus Enable Query *ESE? [:]STATus[<channel>]:STANdard[...]

SCPI Command Reference SCPI Command Summary Release 2.1 105 Ta b l e B . 2 Readback Commands T rigger *TRG T rigger commands. Analogo us to the IEEE 488.1 defined Gr oup Execute T rigger interface message. See IEEE 4 88.2 section 6.1.4.2.5 N/A Self-T est Query *TST? [:]SYSTem[<channel>]:TEST? Internal self-test and respo nds indicating whethe[...]

106 Operating Manual for Multichannel F unctionality (GPIB-M) SCPI Command Reference SCPI Command Summary Ta b l e B . 3 Commands for Output Control Function SCPI Command Description Query Set (Immediate) Current Setpoint [[:]SOURce][<channel>]:CURRent[:LEVel][: IMMediate][:A MPLitude] {<current>|MAXimum|MINimum} Change current setpo in[...]

SCPI Command Reference SCPI Command Summary Release 2.1 107 Ta b l e B . 4 Commands for Current Share Ta b l e B . 5 Commands for Calibration Ta b l e B . 6 Command to Clear all Protection Mechanisms Set High V oltage Limit [[:]SOURce] [<channel>]:VOLTage:LIMit:HIGH {<voltage>|MAXimum|MINimum} Set upper limit of volt age setpoint range [...]

108 Operating Manual for Multichannel F unctionality (GPIB-M) SCPI Command Reference SCPI Command Summary Ta b l e B . 7 Comm ands for Fo ld Protection Ta b l e B . 8 Commands for T riggering Ta b l e B . 9 System Commands Function SCPI Command Description Query Set Output Fold De lay [:]OUTPut[<channel>]:PROTection:FOLD:DELa y <delay> [...]

SCPI Command Reference SCPI Command Summary Release 2.1 109 Ta b l e B . 1 0 S tatus Commands Function SCPI Command Description Query Query Operation S tatus Condition Register [:]STATus[<channel>]:OPERation:CONDitio n? See Section 4, “S tatus Registers” N/A Set Operation S tatus Enable Register [:]STATus[<channel>]:OPERation:ENABle[...]

11 0 Operating Manual for Multichannel Functionality (GPIB-M) SCPI Command Reference SCPI Command Summary Query Operation S tatus Regulating Condition Regis ter [:]STATus[<channel>]:OPERation:REGulating :CONDition? See T able 4.2, on page 72 .N / A Set Operation S tatus Regulating Enable Regis ter [:]STATus[<channel>]:OPERation:REGulati[...]

SCPI Command Reference SCPI Command Summary Release 2.1 111 Preset E nable, Positive T ransition and Negative T ransition S tatus Registers [:]STATus[<channel>]:PRESet N/A Query Questionable S tatus Co ndition Register [:]STATus[<channel>]:QUEStionable:CONDi tion? See T able 4.7, on page 76 .N / A Set Questionable S tatus Enable Registe[...]

11 2 Operating Manual for Multichannel Functionality (GPIB-M) SCPI Command Reference SCPI Command Summary Ta b l e B . 1 1 Protection Commands T able B.12 User Lines T able B.13 Output S tate Query the S tandard Event register (ESR?) [:]STATus[<channel>]:STANdard[:EVENt]? S ee T able 4.10, on page 78 .N / A Enable the S tandard Event register[...]

SCPI Command Reference SCPI Command Summary Release 2.1 11 3 Ta b l e B . 1 4 Auto Sequ ence Commands Function SCPI Command Description Query Delete selected sequence [:]PROGram[<channel>][:SELected]:DELete [:SELected] The selected sequence is deleted N/A Delete all sequences [:]PROGram[<channel>][:SELected]:DELete :ALL All sequences ar[...]

11 4 Operating Manual for Multichannel Functionality (GPIB-M) SCPI Command Reference SCPI Command Summary Delete specific sequence step [:]PROGram[<channel>]:SEQuence<sequence_n umber>:STEP< step_number>:DELete Delete a specific sequence step N/A Edit specific se quence step [:]PROGram[<channel>]:SEQuence<sequence_n umber[...]

SCPI Command Reference Expressions Release 2.1 11 5 Expressions Ta b l e B . 1 5 Expressions Expression Det ails aux_line_mnemonic Define the output of the auxiliary line.The possible values are NONE, ON, OFF , OVOLtage, UVOLtage, OCURrent, UCURrent, ACOFf, OTEMper ature, SPRotection, UNRegulated, FOLD, CC, CV , CP . channel The address for a multi[...]

SCPI Command R eference Expressions 11 6 Operating Manual for Multichannel Functiona lity (GPIB-M)[...]

Release 2.1 11 7 Appendix C. Error Messages Overview Errors are placed in a queue as they are de tected. The queue works on a first in, first out (FIFO) basis. If the queue overflows, the last error in the queue is replaced with error –350, “Queue Overflow”. When all errors have been read from the queue, further error queries return 0, “No [...]

Error Messages Command Error List 11 8 Operating Manual for Multichannel Functiona lity (GPIB-M) Command Error List An error in the range [-199, -100] indicates that an IEEE 488.2 syntax error has been detected by the instrument’ s parser . The o ccurrence of any error in this class ca uses the command error bit (bit 5) in th e Event Status Regis[...]

Error Messages Execution Error List Release 2.1 11 9 -220 Parameter error Indicates that a program data element related error occurred. -221 Setting conflict Indicates that a legal program data element was p arsed but could not be executed due to the current power supply state. Factors that may contribute to this error are: Remote source - T o set [...]

Error Messages Device-Specific Error List 120 Operating Manual for Multichannel Functiona lity (GPIB-M) Device-Specific Error List An error in the range [-399, 300] or [1, 32767] indicates that the instrument has detected an error which is not a command e rror , a query error, or an execution error; some device op erations did not properly complete[...]

Error Messages Query Error List Release 2.1 121 Query Error List An error number in the rang e [-499, -400] indicates that the output queue contro l of the instrument has detected a problem with the message exchange protocol described in IEEE 488.2, chapter 6. Th e occurrence of any error in this class causes the query error bit (bit 2) in the Even[...]

Error Messages Front Panel Error Codes 122 Operating Manual for Multichannel Functiona lity (GPIB-M) Front Panel Error Codes Ta b l e C . 7 Front Panel Error Codes CPU Error Codes Ta b l e C . 8 CPU Error Code s Analog Programming Interface Error codes Ta b l e C . 9 Analog Progr amming Interface Err or code Auto Sequencing Error Codes Ta b l e C .[...]

Error Messages CANbus Error Codes Release 2.1 123 CANbus Error Codes Ta b l e C . 11 CANbus Error Codes Multichannel Error Codes Ta b l e C . 1 2 Multichannel Error Codes Error code Error Message Description +1701 CANbus hardware missing The CANbus option is not installed on the controller card, or controller card is not present. +1702 CANbus devic[...]

Error Messages Current Share Error Codes 124 Operating Manual for Multichannel Functiona lity (GPIB-M) Current Share Error Codes Ta b l e C . 1 3 Current S hare Error Codes Error code Error Message Description +1900 Current Share General Error +191 1 Current share master already online A unit on the CANbus network has already been assigned the curr[...]

Release 2.1 125 Appendix D. Calibration Overview The calibration of the unit is software dependent; there are no potentiometers t o adjust. The calibration points are set to 10% and 90% of the rated ou tputs and calibration data is automatically calculated fro m the measurement date you prov ide. The setting and readback accuracy of the po wer supp[...]

Calibration Setup and Equipment 126 Operating Manual for Multichannel Functiona lity (GPIB-M) Security code T o protect calibration data, a security code is required to enter calibration mode. The security code set at the factory to " 0000 ." The password can be changed. Calibration state must be ON to change the password. The SCPI comman[...]

Calibration Calibration Procedure Release 2.1 127 Calibration Procedure Calibration of programming and readback are combined in a single procedure. Output V oltage 1. Set the load to open circuit. Att ach a DVM across the output terminals. 2. Minimum calibration level Set the output voltage to 10 % by send ing the command: CAL:OUTP:VOL T :LEV MIN 3[...]

Calibration Calibration Procedure 128 Operating Manual for Multichannel Functiona lity (GPIB-M) Output Current 1. Set the power supply and lo ad operate at full output. Y ou must ensure the power supply is operating in current mode during current calibration. Place a shunt on the load line so that you can measure th e current. Attach a DVM across t[...]

Calibration Exit calibration mode Release 2.1 129 Exit calibration mode When you have completed calibration, exit calibration mode by sending the command: CAL:ST A T OFF , "0000" where “0000” is replaced with your security code. Restore Factory Calibration Restore the unit to the calibration cons tants set at the factory by sending th[...]

Calibration Restore Factory Calibration 130 Operating Manual for Multichannel Functiona lity (GPIB-M)[...]

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