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RP Series

March 2011

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12. Introduction to SCPI

SCPI (Standard Commands for Programmable Instruments) is a programming language for
controlling instrument functions over the RS232 or IEEE 488 bus. The same SCPI
commands and parameters control the same functions in different classes of instruments.
For example, you would use the same MEAS:VOLT? command to measure the AC source
output voltage or the output voltage of a SCPI-compatible multimeter.

12.1. Conventions Used in This Manual

Angle brackets<>

Items within angle brackets are parameter abbreviations. For
example, <NR1> indicates a specific form of numerical data.

Vertical bar

Vertical bars separate alternative parameters. For example, 0 | 1
indicates that either "0" or "1" can be used as a parameter.

Square Brackets[]

Items within square brackets are optional. The representation
[SOURce:]VOLT means that SOURce: may be omitted.

Boldface font

Boldface font is used to emphasize syntax in command definitions.
CURR <NRf> shows a command definition.

Upper case font

Upper case font is used to show program lines in text. OUTP 1
shows a program line.

12.2. The SCPI Commands and Messages

This paragraph explains the syntax difference between SCPI Commands and SCPI
messages.

12.2.1. Types of SCPI Commands

SCPI has two types of commands, common and subsystem.

Common commands are generally not related to specific operations but to controlling
overall AC source functions such as reset, status and synchronization. All common
commands consist of a three-letter mnemonic preceded by an asterisk:

*RST

*IDN? *SRE 255

Subsystem commands perform specific AC source functions. They are organized into an
inverted tree structure with the "root" at the top. Some are single commands while others
are grouped within specific subsystems.

You must include the root header in all

commands sent to the AC source.

Refer to appendix A for the AC source SCPI tree structure.

12.2.2. Types of SCPI Messages

There are two types of SCPI messages, program and response.

A program message consists of one or more properly formatted SCPI commands sent
from the controller to the AC source. The message, which may be sent at any time,
requests the AC source to perform some action.

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Содержание 1251RP Series

Страница 1: ... America 858 450 0085 direct Fax 858 458 0267 Email Domestic Sales domorders sd ametek com International Sales intlorders sd ametek com Customer Service service ppd ametek com Web www programmablepower com March 2011 Document No 5003 960 Rev R Advanced Test Equipment Rentals www atecorp com 800 404 ATEC 2832 Established 1981 ...

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Страница 5: ...oses only Notice of Copyright AC Power Source User and Programming Manual 2010 AMETEK Programmable Power Inc All rights reserved Exclusion for Documentation UNLESS SPECIFICALLY AGREED TO IN WRITING AMETEK PROGRAMMABLE POWER INC AMETEK a MAKES NO WARRANTY AS TO THE ACCURACY SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION b ASSUMES NO R...

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Страница 7: ...onnel and equipment safety Always ensure that facility AC input power is de energized prior to connecting or disconnecting any cable In normal operation the operator does not have access to hazardous voltages within the chassis However depending on the user s application configuration HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY may be normally generated on the output terminals The customer user must e...

Страница 8: ...structions of AMETEK is opened modified or disassembled in any way without AMETEK s consent or is used in combination with items articles or materials not authorized by AMETEK The Buyer may not assert any claim that the Products are not in conformity with any warranty until the Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement PRODUCT RETURN PROCEDURE 1 Request a R...

Страница 9: ... 19 5 3 Power Factor Correction Module PFC 19 5 4 DC DC Converter Module 20 5 5 20 5 6 Oscillator Control Board 21 5 7 DC to AC Power Module 22 5 8 IEEE 488 RS232 22 6 Calibration 24 6 1 Calibration Equipment 24 6 2 Routine Calibration 24 6 3 Non Routine Calibration 27 7 Service 29 7 1 General 29 7 2 Basic Operation 29 7 3 Advanced Troubleshooting 31 8 Introduction to PGUI32 34 8 1 About This Prog...

Страница 10: ...s 47 13 System Considerations 50 13 1 IEEE Interface 50 13 2 RS232C Interface 50 14 SCPI Command Reference 53 14 1 Introduction 53 14 2 Subsystem Commands 53 14 3 System Commands 60 14 4 Common Commands 63 15 Programming Examples 69 15 1 Introduction 69 15 2 Programming the Output 69 15 3 Making Measurements 70 16 Status Registers 71 16 1 Power On Conditions 71 16 2 Standard Event Status Group 72 ...

Страница 11: ...igure 12 2 Command Message Structure 45 Figure 13 1 GPIB Address Selection Switch 50 Figure 13 2 RS232C Interface cable wiring diagram 52 Figure 16 1 AC Source Status System Model 71 List of Tables Table 1 Logic Board LED s 20 Table 2 Load and current 24 Table 3 Basic Symptoms 29 Table 4 Poor output voltage regulation 29 Table 5 Overload Light On 29 Table 6 Distorted Output 30 Table 7 Unit shuts d...

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Страница 13: ... a frequency range of 16 Hz to 500 Hz The maximum output current for the 1251RP is 9 2 amps on 135 volts range and 4 6 amps on 270 volts range The maximum output current for the 801RP is 6 amps on 135 volt range and 3 amps on 270 volts range The universal nominal input can be from 100 volts to 240 volts at 50 Hz or 60 Hz line frequency Simple front panel controls enable the voltage current limit a...

Страница 14: ... no effect on output Isolation Voltage Input to output 2200 VAC input to chassis 1350 VAC 2 1 2 Output Voltage Range 0 to 135 V rms or 270 V rms Voltage Resolution 0 1 volt Voltage Accuracy 1 of range 50 to 60 Hz 2 at 400 Hz Line Load Regulation 1 of FS on low range 0 5 of FS on high range Voltage Distortion 0 5 typical THD at 50 60 Hz Total Power 800 VA maximum at full scale voltage either range ...

Страница 15: ... 0 4 6 Accuracy Programmed value 5 of maximum current Frequency Range Range Resolution 16 0 99 9 Hz 0 1 Hz 100 500 Hz 1 Hz Frequency Accuracy 0 02 of programmed value DC Offset Voltage Less than 25 mV with linear load Output Noise 0 2 volts RMS on 135 range 0 5 volts RMS on 270 range 2 1 3 Measurements Current TRMS Resolution 0 1 amp Accuracy 0 2 amp Voltage Accessible only through RS232 IEEE 488 ...

Страница 16: ...s 1 Parity None Baud rate 9600 IEEE 488 2 commands and SCPI IEEE Interface Bi directional parallel interface 24 pin D shell connection IEEE address set using DIP switch on rear panel from 0 to 31 IEEE functions SH1 AH1 T8 L3 RL2 Terminators LF CRLF EOI IEEE 488 2 commands and SCPI Remote Inhibit Option RI required Rear panel connector BNC Input Contact closure to ground or logic low TTL signal req...

Страница 17: ...x 3 5 88 9 mm height x 22 558 8mm depth chassis size stand alone configuration Unit Weight 37 lbs Material Aluminum chassis panels and cover Finish Yellow iridite then painted semi gloss polyurethane Cooling Fan cooled with air intake on the sides and exhaust to the rear Internal Construction Modular sub assemblies Chassis Slides General Devices C300S 118 B308 use hardware provided to prevent dama...

Страница 18: ...rvoltage Category II Vibration Designed to meet NSTA 1A transportation levels Shock Designed to meet NSTA 1A transportation levels 2 4 Regulatory Electromagnetic Designed to meet EN50081 1 and EN50082 1 European Emissions Emissions and and Immunity standards as required for the CE mark Immunity Acoustic Noise 65 dBA maximum at 0 to 50 load 75 dBA maximum greater than 50 load to 100 load Measured a...

Страница 19: ... or CURRENT DISPLAY MODE Refer to paragraph 4 1 2 2 6 Available Options The following options are available on 801RP and 1251RP AC power source models Option Description IF Combined IEEE 488 RS232C interface option L22 Locking knobs Prevents front panel change of voltage and frequency RI Remote Inhibit rear panel input RMS Rack mount slides P N 210367 General Devices Model C300S 118 B308 1 801RP a...

Страница 20: ... has been designed to operate from a single phase AC line voltage The nominal operating voltage is from 100V to 240V line input Figure 3 1 The 801RP 1251RP AC Power Source WARNING Do not connect the unit to a 400 480 service as the result will be a severely damaged unit 3 3 Mechanical Installation The AC Source is a completely self contained power unit It can be used free standing on a bench The u...

Страница 21: ... less than 15A Figure 3 2 Rear Panel View 3 5 Output Connections 3 5 1 Output Wiring Front Panel When the low voltage range is selected only the single US NEMA 5 15R output socket will be active If the high voltage range is selected only the European CEE7 7 socket will be active Either voltage will be present on the output terminals at the rear panel There is only one output terminal on the rear p...

Страница 22: ... selector Set the current limit to the maximum value using the right shuttle Set the output voltage to 135V with the left shuttle 5 Enable the output by pressing the output on off button in the top right of the front panel The green LED above the button will illuminate when the output is on The output should be a clean 135 volt AC sinewave having less than 1 distortion 6 Apply full load refer to t...

Страница 23: ...ornia Instrument s customer satisfaction department for further assistance High Range Load Low Range Load Load ON OFF Switch Oscilloscope AC Output or Distortion Analyzer Unit Under 270 0V Test DMV AC Input Model Range Current Load 801RP 135V 6 0A 22 5 801RP 270V 3 0A 90 0 1251RP 135V 9 2A 14 6 1251RP 270V 4 6A 58 6 Figure 3 3 Functional test setup ...

Страница 24: ...ad from the AC source When the low voltage range is selected only the US NEMA 5 15P output socket will be active If the high voltage range is selected only the European CEE7 7 socket will be active Refer to Figure 3 1 and Figure 4 1 for socket locations Both voltage ranges are present at the rear panel output terminals however Refer to Figure 3 2 1 801RP and 1251RP Series models shipped before Oct...

Страница 25: ...he REN Remote Enable interface line FAULT The FAULT LED indicates an output overvoltage or overtemperature condition Overtemperature is usually caused by poor air flow Check the air flow exhaust at the rear of the unit to make sure it is not obstructed OUTPUT The Output LED indicates the status of the OUTPUT ON OFF button When the Output LED is not lit the output voltage is not present at the outp...

Страница 26: ...s The LED above the switch will light to indicate the high voltage range selection The output voltage will be reset to zero voltage after a range change OUTPUT The OUTPUT button will toggle the output to enable or disable the output The LED above the button will light when the output is on No output voltage will be present when the OUTPUT button is off despite the level of voltage programmed MODE ...

Страница 27: ... or current limit In the current limit mode the display switches to display the output current after 3 seconds The Frequency Current select button will define the operating mode of the frequency current display 1 801RP and 1251RP Series models shipped before Oct 2005 use LCD style displays instead of LED seven segment displays Other than the type of display used there are no functional differences...

Страница 28: ...shuttle 4 Enable the output by pressing the OUTPUT button 4 2 2 Slewing Output Values The output parameters can be slewed using the shuttles 1 Enable the output by pressing the OUTPUT button The LED above it will turn on 2 Use the left shuttle to set the output voltage Clockwise will increase the output counter clockwise will reduce the output The display above the shuttle will show the voltage se...

Страница 29: ...s All P and RP series are supplied with default factory settings when the unit is powered up The factory settings are Voltage range Low Voltage 0 V Frequency 60 Hz Current limit Max available current Display mode Frequency Output OFF It is possible to change the power on initialization values in one of two ways 1 Using the optional RS232 or IEEE 488 RP only interface and the supplied PGUI32 progra...

Страница 30: ...ey press the OUTPUT ON OFF key This will save the present front panel settings in non volatile memory register NVM no 7 and assign this register as the power on register 4 Release both keys 5 This procedure can be repeated as often as needed by the user ...

Страница 31: ...e voltage to 250 VDC or 400 VDC depending on whether the low output range or high output range is selected The DC to AC converter develops an AC sine wave voltage at the output frequency and amplitude programmed by the oscillator The oscillator board provides the reference signal to the DC to AC converter and has the front panel shuttles and switches to control and view the setting of voltage freq...

Страница 32: ...tion The amber LEDs DS5 DS4 and DS3 indicate that the 15V power to the optocouplers on the AC converters is within regulation The red and green LED s DS7 and DS6 indicate logic power to the AC converter is ok The red LED DS8 indicates that logic power to the DC converter is within specification at 15 volts The LED DS2 shows that 24 volt fan power is available Table 1 Logic Board LED s LED FUNCTION...

Страница 33: ... or the remote control interface It also updates the displays to show the programmed settings and current measurements Refer to Figure 5 2 for a block diagram When the output is programmed above 5 0 volts the multicolor LEDs DS10 and DS9 on the oscillator board will illuminate Current Current DAC Curr Sense Fault Sense Frequency Generation Micro Voltage DAC Front Controller Panel Control Display S...

Страница 34: ...ridge topology with an LC filter on the output The switching frequency is 34 6 kHz This module has pulse by pulse peak current limit and sinusoidal average current limiting to protect the power transistor and load 5 8 IEEE 488 RS232 The RP can optionally be outfitted with a combined RS232C and IEEE 488 interface board This board assembly has optocouplers for interface isolation The interface in us...

Страница 35: ...VAC AND 400 VDC ARE PRESENT IN CERTAIN SECTIONS OF THIS POWER SOURCE THIS EQUIPMENT GENERATES POTENTIALLY LETHAL VOLTAGES DEATH ON CONTACT MAY RESULT IF PERSONNEL FAIL TO OBSERVE SAFETY PRECAUTIONS DO NOT TOUCH ELECTRONIC CIRCUITS WHEN POWER IS APPLIED ...

Страница 36: ... Equipment Digital Multimeter Fluke 8840 or HP 34401A 100 milliohm Current Shunt Isotek Model RUG Z R100 0 1 or equivalent Load Bank Various power load resistors will be needed Table 2 Load and current Model Range Current max Load 801RP 135V 6 0A 22 5 801RP 270V 3 0A 90 0 1251RP 135V 9 2A 14 6 1251RP 270V 4 6A 58 6 6 2 Routine Calibration Setup Connect the test equipment to the power source as sho...

Страница 37: ...bration 6 2 1 Output Voltage Calibration 1 Select the low voltage range Set the output frequency to 60Hz Set the output voltage to 135 volts 2 Remove the load and enable the output voltage with the Output ON OFF button 3 Locate R111 on A3 assembly board and adjust R111 so that the external voltmeter will read 135 0V 0 1V ...

Страница 38: ...2 for the proper full load 3 Read the output voltage across the shunt with the external voltmeter 4 To calibrate the current measurement functions select the current function with the frequency current button The current measurement readout will appear on the display 5 Locate R29 on assembly board A4 Adjust R29 so that the current reading agrees with the current measured with the external shunt an...

Страница 39: ... The IEEE interface can be used as well but requires that the PC is equipped with a National Instrument GPIB controller card 2 Refer to Section 9 for Installing and starting the GUI to monitor the voltage measurements 3 Program the output voltage to 170 volts and 200 Hz The output must not be loaded 4 Monitor the output voltage with an external voltmeter 5 Locate R128 on the A3 assembly board Adju...

Страница 40: ...March 2011 RP Series 28 Figure 6 3 Location of Internal Adjustments ...

Страница 41: ... Operation Table 3 Basic Symptoms PARAGRAPH PROBLEM 7 2 1 Poor Output Voltage Regulation 7 2 2 Overload Light On 7 2 3 Distorted Output 7 2 4 Unit Shuts Down After 3 5 Seconds 7 2 5 No Output and no lights on front panel 7 2 6 No output but power on LED on front panel is lit 7 2 1 Poor Output Voltage Regulation Table 4 Poor output voltage regulation CAUSE SOLUTION Unit is overloaded Remove overloa...

Страница 42: ...ront Panel Table 8 No output and no lights on front panel CAUSE SOLUTION Rear panel power switched off Switch the breaker on No input power to the input connector Ensure correct input power Blown fuse Check fuse in the rear panel and replace with same type and rating 7 2 6 No Output but power on LED on Front Panel is Lit Table 9 No output but power on led is lit CAUSE SOLUTION OUTPUT ON switch is ...

Страница 43: ...internal capacitors to discharge 7 3 2 Removing Top Cover Remove the screws securing the top cover and remove the top cover 7 3 3 Initial Inspection Perform a visual inspection of the unit and ensure all the connectors are properly mated and there are no loose or broken wires 7 3 4 Connectors and Fuses Check Up Ensure all connectors are properly mated and there are no broken wires Check fuse F1 on...

Страница 44: ... amber LEDs DS3 DS4 DS5 if one or more of these LEDs is not lit the trouble is on the DC AC board Unplug the cable to the DC AC module after safely removing power If all the LEDs are lit after power up replace the DC AC module as it has a shorted gate drive and probably blown power transistors Red and green LEDs DS6 and DS7 on the back of the board provide power to DC AC and the oscillator board I...

Страница 45: ...igns of burning or damage on the DC AC board or components then it could be assumed that it is a random fuse failure and it would be OK to replace the fuse and try again WARNING In most cases when a fuse blows it is likely caused by a failed power semiconductor and repeatedly replacing a fuse will only cause severe damage to that or other assemblies ...

Страница 46: ...an be found in the on line help supplied with the program Use the Help menu or press on any of the many Help keys located in all program windows for an explanation of the relevant screen or function As always California Instruments appreciates your patronage and would welcome any comments and suggestions you might have regarding this software or any of its other products Comments may be send to su...

Страница 47: ... work For this reason all California Instruments power sources that operate over RS232C are supplied with a RS232C 9 pin female to 9 pin female cable If for some reason this cable cannot be located the following cable diagram shown in Figure 8 1 should be used when constructing a serial cable Figure 8 1 RS232C Cable Wiring DB 9 PC DB 9 AC Source Pin 1 2 3 4 5 6 7 8 9 Pin 1 2 3 4 5 6 7 8 9 Directio...

Страница 48: ...PC using an IEEE 488 interface cable A National Instruments GPIB controller card is required to use the PGUI32 program Select the IEEE 488 interface by sliding the interface selection DIP switch on the rear panel to the IEEE 488 position Set the desired IEEE address using DIP switch position 4 through 0 on the rear panel 9 3 Installing the PGUI32 Software The PGUI32 software is distributed on CD R...

Страница 49: ...l cable consult the PGUI32 on line help under Interface settings for a wiring diagram 3 Did you connect the cable in the right direction This cable is uni directional and should be marked with a SOURCE and a PC label Make sure you connect the SOURCE side of the cable to the back of the AC source and the PC side of the cable to the PC port Resolution for Symptom 1 The P and RP Series of AC sources ...

Страница 50: ...g box 10 This brings up the settings dialog box for the COM port In this example COM2 is used 11 From the tabs at the bottom of the dialog box select the Port Settings tab 12 This should bring up the dialog shown in Figure 9 2 13 Next select the Advanced button to bring up the advanced port settings dialog box shown in Figure 9 3 14 At the top of the dialog box disable the Use FIFO buffers require...

Страница 51: ... INI file should look like this now Interface Bus 0 CommPort 2 GPIBDriver 0 ACSourceAddress 1 CmdDelay 10 PowerSource Model_number 0 WindowState Top 5272 Left 6112 Height 4815 Width 6975 8 Save the file using the File Save menu 9 Close Notepad and start the PGUI32 10 Try to connect again You may have to cycle the power on the AC source if it still shows the Err 100 display Higher values than 10 ma...

Страница 52: ...1 A4 5003 700 1 PC ASSEMBLY OSCILLATOR 1 A5 5003 701 1 PC ASSEMBLY RS232 IEEE 488 1 B1 B2 241187 FAN 3 24 VDC 1 F1 270167 FUSE 15A 250V 60Hz 1 J1 410666 CONNECTOR RCPT 3 PIN PWR INPUT 1 J2 410665 CONNECTOR AC RCPT 125V SINGLE 1 J3 410589 CONNECTOR RCPT 3 SOC EUROPEAN 1 S1 240562 SWITCH ROCKER DPST 1 XF1 250587 FUSE HOLDER CHASSIS 1 250596 FUSE CARRIER 1 1 4 x 1 4 1 OPTIONAL Contact California Inst...

Страница 53: ...nformation for the RP Series AC Power Source You will find the following information in the rest of this guide Chapter 11 Introduction Chapter 12 Introduction to SCPI Chapter 13 Error Reference source not found Chapter 14 SCPI Command Reference Chapter 15 Programming Examples Chapter 16 ...

Страница 54: ...March 2011 RP Series 42 Status Registers Appendix A SCPI command tree Appendix B SCPI conformance information Appendix C Error messages ...

Страница 55: ...Upper case font Upper case font is used to show program lines in text OUTP 1 shows a program line 12 2 The SCPI Commands and Messages This paragraph explains the syntax difference between SCPI Commands and SCPI messages 12 2 1 Types of SCPI Commands SCPI has two types of commands common and subsystem Common commands are generally not related to specific operations but to controlling overall AC sou...

Страница 56: ...The Root Level Note the location of the ROOT node at the top of the tree Commands at the root level are at the top level of the command tree The SCPI interface is at this location when the AC source is powered on a device clear DCL is sent to the AC source the SCPI interface encounters a message terminator the SCPI interface encounters a root specifier Active Header Path In order to properly trave...

Страница 57: ...ferent subsystems you need to be able to restore the active path to the root You do this with the root specifier For example you could set the output frequency to 60 Hz and set the display mode to frequency FREQ 60 DISP MODE 0 Because the root specifier resets the command parser to the root you can use the root specifier and do the same thing in one message FREQ 60 DISP MODE 0 Including Common Com...

Страница 58: ...ngle message unit consisting of a command header or keyword followed by a message terminator FREQuency newline VOLTage newline The message unit may include a parameter after the header The parameter usually is numeric VOLTage 20 newline OUTPut 1 newline 12 4 2 Combining Message Units The following command message is briefly described here with details in subsequent paragraphs Data Query Indicator ...

Страница 59: ...form Long Form The header is completely spelled out such as VOLTAGE SYSTEM and OUTPUT Short Form The header has only the first three or four letters such as VOLT SYST and OUTP The SCPI interface is not sensitive to case It will recognize any case mixture such as VOLTAGE VOLTage Voltage Short form headers result in faster program execution In view of the 21 character receive buffer size of the RP S...

Страница 60: ...ached the end of a message The only permitted message terminator is newline NL which is ASCII decimal 10 or hex 0A In the examples of this manual there is an assumed message terminator at the end of each message If the terminator needs to be shown it is indicated as NL regardless of the actual terminator character 12 5 SCPI Data Formats All data programmed to or returned from the AC source is in A...

Страница 61: ...ata Permits the return of character strings AARD Arbitrary ASCII Response Data Permits the return of undelimited 7 bit ASCII This data type has an implied message terminator SRD String Response Data Returns string parameters enclosed in double quotes ...

Страница 62: ...he unit Switch position 4 through 0 corresponds to bits 4 through 0 of the IEEE address See Figure 13 1 below Figure 13 1 GPIB Address Selection Switch The black section represents the switches The above configuration would cause the 801RP 1251RP to be in GPIB mode at address 10 Listen only must be in the up position to work properly Note Switch setting changes do not take effect until power is cy...

Страница 63: ...F cmd QUIT AND cmd quit THEN IF LEN cmd 0 THEN PRINT 1 cmd CHR 10 END IF IF INSTR cmd THEN PRINT AC Source response retstring END IF Check for Errors after each command is issued PRINT 1 ESR CHR 10 Mask off bits 5 4 3 2 only Other bits are not used esr VAL retstring AND 60 Process esr value for error bits IF esr AND 4 THEN PRINT Query Error Reported by AC Source END IF IF esr AND 8 THEN PRINT Inst...

Страница 64: ...OOP UNTIL char CHR 10 Return result retstring LEFT resp LEN resp 1 END FUNCTION 13 2 2 Serial Cable Diagram The following wiring diagram is required for the serial interface cable between the RP Series AC power source and a PC communications port connector Figure 13 2 RS232C Interface cable wiring diagram DB 9 PC DB 9 AC Source Pin 1 2 3 4 5 6 7 8 9 Pin 1 2 3 4 5 6 7 8 9 Direction output input out...

Страница 65: ...mon commands 14 2 Subsystem Commands Subsystem commands are specific to AC source functions They can be a single command or a group of commands The groups are comprised of commands that extend one or more levels below the root The description of common commands follows the description of the subsystem commands The subsystem command groups are listed in alphabetical order and the commands within ea...

Страница 66: ...put AC current being sourced at the output terminals Note that the output relay must be closed to obtain current flow Query Syntax MEASure CURRent Parameters None Examples MEAS CURR Returned Parameters NR2 Related Commands OUTP 0 1 MEASure VOLTage This query returns the AC rms voltage being sourced at the output terminals Note that the output relay must be closed or 0 volts will exist at the termi...

Страница 67: ... output relay state is set to OFF Note that the CURRent command is coupled with the VRANGe This means that the maximum current limit that can be programmed at a given time depends on the voltage range setting in which the unit is presently operating Command Syntax SOURce CURRent NRf Parameters 0 to a value specified by the LIM CURR Unit A rms amperes RST Defined by the PON Examples CURR 5 Query Sy...

Страница 68: ...ange values use the query format of the RANGE command The returned values for high and low range eg 136 and 272 should be used to change range In any case the high voltage range value will be two times the low voltage range value Sending a parameter other than the actual range values will not be accepted Some RP Series may use other voltage range values than shown here It is recommended to query t...

Страница 69: ...main output function of the RP Series source Subsystem Syntax OUTPut bool Enable disable output voltage current power etc OUTPut Command Syntax OUTPut bool Parameters 0 1 RST Value OFF Examples OUTP 1 OUTP ON Query Syntax OUTPut Returned Parameters 0 1 Related Commands RCL SAV ...

Страница 70: ...eries the lower frequency limit of the power source Command Syntax LIMit FREQuency LOW NRf Parameters Low freq limit command protected Query Syntax LIMit FREQuency LOW Returned Parameters NR2 LIMit FREQuency HIGH This command queries the upper frequency limit of the power source Command Syntax LIMit FREQuency HIGH NRf Parameters High freq limit command protected Query Syntax LIMit FREQuency HIGH R...

Страница 71: ...age range command protected Query Syntax LIMit VOLTage Returned Parameters NR2 14 2 5 Display Subsystem DISPlay MODE This command is used to control the AC source display The command will allow the Frequency Current display to switch between display of current or frequency data Command Syntax DISPlay MODE boolean Parameters 0 display frequency 1 display current Query Syntax DISPlay MODE boolean Re...

Страница 72: ...turns 0 No Error If more errors are accumulated than the queue can hold the last error in the queue is 350 Too Many Errors Query Syntax SYSTem ERRor Parameters None Returned Parameters NR1 SRD Example SYST ERR SYSTem KLOCk This command sets or clears the power on LOCAL or REMOTE state When set 1 the AC Source will power up in remote state locking out all keyboard controls The local state can only ...

Страница 73: ...he IEEE 488 interface Command Syntax SYSTem LOCal Parameters None Example SYST LOC Related Commands SYST REM SYSTem REMote This command sets the interface in the Remote state which disables all front panel controls This command only applies to the RS232C interface If IEEE 488 is used the remote local status is determined by the REN line on the IEEE 488 interface Command Syntax SYSTem REMote Parame...

Страница 74: ...ize its parameters at power up If data in the selected register is not valid or the selected register is 8 the initialization will be with factory default values Refer to paragraph 14 4 6 Command Syntax SYSTem PON NRf Parameters 0 to 8 Examples SYST PON 1 Query Syntax SYST PON Returned Parameters NR1 Related Commands SAV ...

Страница 75: ...s specified by the command then both command and query are included under the explanation for the command If a query does not have a corresponding command or is functionally different from the command then the query is listed separately The description for each common command or query specifies any status registers affected Refer to Chapter 16 which explains how to read specific register bits and ...

Страница 76: ...All of the enabled events of the Standard Event Status Enable Register are logically ORed to cause the Event Summary Bit ESB of the Status Byte Register to be set See Section 16 for descriptions of the Standard Event Status registers The query reads the Standard Event Status Enable register Table 11 Bit configuration of standard event status enable register Bit Position 7 6 5 4 3 2 1 0 Bit Name PO...

Страница 77: ...Returned Parameters NR1 Register value Related Commands CLS ESE ESE If the ESR returns the value of the status bits in the ESR register Refer to Table 12 for the status bits and their meaning Table 12 Bit configuration of standard event status register Bit Position 7 6 5 4 3 2 1 0 Bit Name PON not used CME EXE DDE QYE not used not used Bit Weight 128 32 16 8 4 CME Command error DDE Device dependen...

Страница 78: ...respectively There are no functional differences between the P and RP products with respect to remote control To differentiate between a 1001P or a 801RP query the current limit setting For a 801RP this value will be 6 0 For a 1001P this value will be 7 4 There is no way an no need to differentiate a 1251P from a 1251RP over the bus 14 4 5 RCL This command restores the AC source to a state that wa...

Страница 79: ...l 0 s All 0 s ESR register PON bit 1 all others 0 PON 0 all others unaffected STB register All 0 s All 0 s SRE register All 0 s All 0 s Note Sending the RST command will cause the unit to recall the REMOTE or LOCAL state based on the setting of the SYSTem KLOCk command This may put the unit in local if this state is set to 0 To avoid this either set the SYSTem KLOCk state to 1 or follow the RST co...

Страница 80: ...he source cannot generate an MSS bit Command Syntax SRE NRf Parameters 0 to 255 Default Value 128 Example SRE 255 Query Syntax SRE Returned Parameters NR1 Register binary value Related Commands ESE ESR 14 4 9 STB This query reads the Status Byte register which contains the status summary bits and the Output Queue MAV bit Reading the Status Byte register does not clear it The input summary bits are...

Страница 81: ...ister number If the register number or the register has no valid data the AC source initializes to the following state VOLT 0 FREQ 60 OUTP 0 VOLT RANG 136 The following commands are given implicitly at power on RST CLS SRE 128 ESE 0 RST is a convenient way to program all parameters to a known state Refer to Table 13 under the RST command in paragraph 14 4 6 to see how each programmable parameter i...

Страница 82: ...is controlled with the FREQuency command To set the output frequency to 50 Hz use FREQuency 50 Current Limit To set the rms current limit use CURRent n where n is the rms current limit in amperes If the load attempts to draw more current than the programmed limit The AC source is programmed to turn off its output if the rms current limit is reached Note The CURRent command is coupled with the VOLT...

Страница 83: ...vent Enable Logic Output Byte enable Logic ESR ESE STB SRE n u 0 Queue n u 0 n u 1 Data n u 1 QYE 2 4 4 Data n u 2 DDE 3 8 8 Data n u 3 EXE 4 16 16 OR MAV 4 16 16 OR CME 5 32 32 ESB 5 32 32 n u 6 MSS 6 64 64 PON 7 128 128 n u 7 Figure 16 1 shows the status register structure of the AC source The Standard Event Status Byte and Service Request Enable registers and the Output Queue perform standard I...

Страница 84: ...ter summarizes the information from all other status groups as defined in the IEEE 488 2 Standard Digital Interface for Programmable Instrumentation The bit configuration is shown in Table 15 Command Action STB reads the data in the register but does not clear it returns MSS in bit 6 The MSS Bit This is a real time unlatched summary of all Status Byte register bits that are enabled by the Service ...

Страница 85: ...summary bits are active Use STB Step 2 Read the corresponding Event register for each summary bit to determine which events caused the summary bit to be set Use ESR Note When an Event register is read it is cleared This also clears the corresponding summary bit Step 3 Remove the specific condition that caused the event If this is not possible the event may be disabled by programming the correspond...

Страница 86: ...s 74 Appendix A SCPI Command tree Command Syntax Tree Root SOURce CURRent FREQuency VOLTage LEVel RANGe OUTPut MEASurement CURRent VOLTage DISPlay MODE SYSTem PON REMote LOCal SAVE LIMit CURRent VOLTage FREQuency LOW HIGH ...

Страница 87: ...User and Programming Manual Rev R California Instruments RP Series March 2011 75 Appendix B SCPI Conformance Information SCPI Version The RP Series AC power sources conform to SCPI version 1990 0 ...

Страница 88: ...or Generally the result of sending a value that is out of range i e a VOLT 200 command when the unit is in the 136V Low range 300 Device specific error Generally the result of an overcurrent current limit trip or over temperature condition 350 Queue overflow Generally caused by too many errors being generated without reading error status causing error buffer to overflow 400 Query error Generally c...

Страница 89: ...equired to install 36 header optional 46 separator 46 Header 43 Hold Up Time 2 I IDN 66 IEEE 488 22 Immunity 6 Inrush Current 2 installation 8 36 program 36 Installing software 36 Introduction 1 Isolation Voltage 2 K knob 14 L LED 29 LED indicators 29 LED segment display 15 LIMit CURRent 58 LIMit FREQuency 58 LIMit VOLTage 59 Line Current 2 Line Frequency 2 Line Voltage 2 M maintenance 29 manual 3...

Страница 90: ...ssage 42 program message 42 response message 43 Separator 46 Setup program 36 Shock 6 Short Circuit current 5 shuttle 14 simulation mode 35 SRE 68 status 13 STB 68 suggestions 34 SYSTem ERRor 60 SYSTem KLOCk 60 SYSTem LOCal 61 SYSTem REMote 61 T Temperature operating storage 6 terminator 47 top cover removal 31 Transients Input 5 troubleshooting 29 V Vibration 6 VOLTage 56 voltage ranges 10 VOLTag...

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