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Ametek 801RP Series User And Programming Manual

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801RP / 1251RP Series
AC Power Source
User and Programming
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Contact Information
Telephone: 800 733 5427 (toll free in North America)
858 450 0085 (direct)
Fax: 858 458 0267
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Domestic Sales: domorders.sd@ametek.com
International Sales: intlorders.sd@ametek.com
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www.programmablepower.com
March 2011
Document No. 5003-960 Rev. R

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  • Page 1 User and Programming Manual Contact Information Telephone: 800 733 5427 (toll free in North 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...
  • Page 5 About AMETEK AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and manufacture of precision, programmable power supplies for R&D, test and measurement, process control, power bus simulation and power conditioning applications across diverse industrial segments.
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  • Page 7: Important Safety Instructions

    Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary sales organizations can accept any responsibility for personnel, material or inconsequential injury, loss or damage that results from improper use of the equipment and accessories.
  • Page 8 AMETEK will, at its expense, deliver the repaired or replaced Product or parts to the Buyer. Any warranty of AMETEK will not apply if the Buyer is in default under the Purchase Order Agreement or where the Product or any part...

  • Page 9: Table Of Contents

    Table of Contents Introduction ..........................1 1.1. General Description ........................... 1 Specifications ..........................2 2.1. Electrical ..............................2 2.2. Mechanical ..............................5 2.3. Environmental............................6 2.4. Regulatory ..............................6 2.5. Front Panel Controls..........................7 2.6. Available Options............................7 Unpacking and Installation ......................8 3.1.
  • Page 10 Top Assembly Replaceable Parts .................... 40 Programming Information ......................41 Introduction to SCPI ......................... 42 12.1. Conventions Used in This Manual ......................42 12.2. The SCPI Commands and Messages ..................... 42 12.3. Using Queries ............................44 12.4. Structure of a SCPI Message ........................45 12.5.
  • Page 11 List of Figures Figure 3-1: The 801RP/1251RP AC Power Source ..................8 Figure 3-2: Rear Panel View .......................... 9 Figure 3-3: Functional test setup ........................11 Figure 4-1: Front panel view ......................... 12 Figure 4-2: Shuttle Knob ..........................14 Figure 5-1: AC Source block diagram ......................19 Figure 5-2: Oscillator and controls .......................

  • Page 13: Introduction

    Introduction This instruction manual contains information on the installation, operation, calibration and maintenance of the RP Series AC power source. 1.1. General Description The 801RP/1251RP AC source is a high efficiency, light weight 800VA or 1250VA programmable AC power source. The output has two voltage ranges of 0-135V or 0-270V with a frequency range of 16 Hz to 500 Hz.

  • Page 14: Specifications

    Specifications All specifications at 25 5 C unless noted otherwise. 2.1. Electrical 2.1.1. Input Line Voltage: 85V to 264V maximum. 100V to 240V nominal. Line Current: 15 A RMS max. Line Frequency: 47-63 Hertz. Efficiency: 80% (typical) depending on line and load. Power Factor: 0.95 or greater typical.
  • Page 15 Current: 6.0 A rms, 18 A peak (low range, Model 801RP) 3.0 A rms, 9 A peak (high range, Model 801RP) 9.2 A rms, 27.6 A peak (low range, Model 1251RP) 4.6 A rms, 13.8 A peak (high range, Model 1251RP) Current Limit: 801RP 1251RP...
  • Page 16 2.1.4. System Specification Non Volatile Memory Storage: 8 complete instrument setups [ Accessible through RS232C interface only ]. RS232C Interface: Bi-directional serial interface [ optional ] 9 pin D-shell connector Handshake: CTS, RTS Data bits: Stopbits: Parity: None Baud rate: 9600 IEEE 488.2 commands and SCPI IEEE Interface:...

  • Page 17: Mechanical

    2.1.5. Unit protection Input Overcurrent: Electronic current limit with fuse. Input Overvoltage Transients: Surge protection to withstand EN50082-1 (IEC 801-4, 5) levels. Output Overcurrent: Shutdown, 0.1 second after overcurrent. Output Overvoltage: Shutdown, recycle input power to reset. Output Short Circuit: Peak current limit.

  • Page 18: Environmental

    2.3. Environmental Operating Temp: 0 degrees to +40 degrees Celsius. Storage Temp: -40 degrees to +85 degrees Celsius. Humidity: Operating: 90% RH up to 40 C. Storage: 90% RH up to 40 C, 75% RH up to 70 C. Creepage and Clearance: Rated for Pollution Degree 2.

  • Page 19: Front Panel Controls

    2.5. Front Panel Controls Controls: Shuttle knobs: Allows continuous change of Voltage, Frequency and Current limit. Function keys: Controls Output state, Voltage range and Display mode. Two, 4 digits, 0.5” LED SEGMENT display. For viewing programmed Displays voltage, frequency, current limit and for displaying measured current. Status Indicators: 6 LEDs to indicate: REMOTE, FAULT, OUTPUT (ON/OFF), VOLTAGE RANGE,...

  • Page 20: Unpacking And Installation

    Unpacking and Installation 3.1. Unpacking Inspect the unit for any possible shipping damage immediately upon receipt. If damage is evident, notify the carrier. DO NOT return an instrument to the factory without prior approval. Do not destroy the packing container until the unit has been inspected for damage in shipment.

  • Page 21: Input Wiring

    3.4. Input Wiring The AC Source is designed to work from a single utility supply. The IEC 320 input connector will accept a standard IEC line cord with the appropriate mating connector for the utility outlet. The utility outlet must be properly grounded and be capable of supplying at least 1725 VA at 120V to 240V in order to deliver full output power in the 1251RP.

  • Page 22: Output Voltage Ranges

    3.6. Output Voltage Ranges The AC power source has two standard output voltage ranges 0-135V and 0-270V. The operator may switch from one range to the other at will with no special precautions except to remember that the output voltage will go to zero voltage whenever a range change takes place.

  • Page 23: Figure 3-3: Functional Test Setup

    In the event the power source does not pass the functional test, refer to the calibration procedure in Section 6 or call California Instrument‟s customer satisfaction department for further assistance. High Range Load Low Range Load Load ON/OFF Switch Oscilloscope Output or Distortion Analyzer...

  • Page 24: Front Panel Operation

    Front Panel Operation 4.1. Front Panel Guided Tour The front panel can be divided in a small number of functional areas: Output Sockets Status Indicator lights Shuttle knobs LED Segment Display Button controls Figure 4-1: Front panel view 4.1.1. Output Outlets The Output Sockets are located on the right side of the front panel.
  • Page 25 4.1.2. Status Indicator Lights Six LED status indicators are located on the front panel. These LED‟s correspond to the following conditions: REMOTE The REMOTE LED indicates that the unit is in remote control mode. If the RS232C interface is used, the REMOTE state can be enabled by the controller using the SYST:REM command.

  • Page 26: Figure 4-2: Shuttle Knob

    4.1.3. The Shuttle Knobs Counter Clockwise clockwise DECREASE INCREASE Figure 4-2: Shuttle Knob There are two shuttle knobs located below the LED seven segment displays, which are used to change setup parameters for voltage, frequency and current limit. The mode button selects the function of the right shuttle.
  • Page 27 4.1.5. LED seven segment displays The digital readouts consists of two 4 digit, LED seven segment displays . The voltage display shows the programmed voltage. The Frequency/Current display shows either the programmed frequency or current limit. In the current limit mode the display switches to display the output current after 3 seconds.

  • Page 28: How To

    4.2. How to... This chapter covers some common tasks that are often performed with an AC power source. These examples are written in a How to... format and provide step by step instructions on how to set up the AC Source for a specific task. 4.2.1.
  • Page 29 4.2.4. Voltage Range Change The voltage range can be changed as follows: 1. Press the HI RANGE button located in the upper left corner. The output voltage will reset to 0 volts. 2. Use the left shuttle knob to set the output voltage. 4.2.5.
  • Page 30 3. While holding the Select key, 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.

  • Page 31: Principle Of Operation

    Principle of Operation 5.1. General An explanation of the circuits in the AC Source is given in this section. Refer to Figure 5-1 for a block diagram of the system. Power Factor DC - DC DC - AC Input Corrector (PFC) Converter Converter Output...

  • Page 32: Dc - Dc Converter Module

    5.4. DC - DC Converter Module The 385 VDC from the PFC is fed to the DC to DC module. It first supplies 385 volts DC to the auxiliary power supply. When the auxiliary power supply starts, it supplies six isolated DC supplies to the AC module.

  • Page 33: Oscillator Control Board

    5.6. Oscillator Control Board The Oscillator control board has the Microcontroller and all the control logic to generate a programmable sine wave reference of the correct amplitude and frequency. It includes all the control logic to respond to user commands from the front panel or the remote control interface.

  • Page 34: Dc To Ac Power Module

    5.7. DC to AC Power Module The DC to AC power Module takes a 250V DC input and generates 0 to 135 volts AC, directly coupled, low range output. When the DC to AC module is supplied with 400 volts DC, the AC module generates 0 to 270 volts AC.
  • Page 35 CAUTION VOLTAGES UP TO 270 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. RP Series March 2011...

  • Page 36: Calibration

    Calibration Routine calibration should be performed every 12 months. Non-routine calibration is only required if a related assembly is replaced or if the periodic calibration is unsuccessful. The calibration involves removing the top cover from the power source. Remove the line power from the power source before removing the top cover.

  • Page 37: Figure 6-1: Test Equipment Hookup For Routine Output Calibration

    AC Source Output Digital Plug Multimeter Figure 6-1: Test Equipment Hookup for Routine Output Calibration 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.

  • Page 38: Figure 6-2: Test Equipment Hook-Up For Measurement Calibration

    6.2.2. Current Measurement Calibration 1. Connect the test equipment to the power source as shown in Figure 6-2. 2. Connect the load to the output. Use the 100 milliohm current shunt in series with the load to measure the AC load current. Refer to Table 2 for the proper full load. 3.

  • Page 39: Non-Routine Calibration

    6.3. Non-Routine Calibration 6.3.1. Current Limit Calibration 1. Connect the test equipment to the power source as shown in Figure 6-2. 2. Locate R31 on the A4 assembly board. Turn R31 clockwise several turns. 3. Connect the load to the output. Use the 100 milliohm current shunt in series with the load to measure the AC load current.

  • Page 40: Figure 6-3: Location Of Internal Adjustments

    Figure 6-3: Location of Internal Adjustments March 2011 RP Series...

  • Page 41: Service

    Service 7.1. General This section describes the suggested maintenance and troubleshooting procedure. The troubleshooting procedure is divided into two sections. The first section deals with basic operation and connection of the equipment. The second section requires opening the unit and using the LED indicators and a simple multimeter to troubleshoot the unit down to the module level.

  • Page 42: Table 6: Distorted Output

    7.2.3. Distorted Output Table 6: Distorted Output CAUSE SOLUTION Power source is grossly overloaded. Reduce load The crest factor of the load exceeds 3:1 Reduce load current peaks by reducing load. 7.2.4. Unit Shuts Down After 3-5 Seconds Table 7: Unit shuts down after 3-5 seconds CAUSE SOLUTION Output shorted...

  • Page 43: Advanced Troubleshooting

    7.3. Advanced Troubleshooting WARNING: DO NOT CONNECT 400-480V TO THE UNIT, THE RESULT WILL BE A SEVERELY DAMAGED UNIT. CAUTION: VOLTAGES UP TO 270 VAC AND 400VDC ARE PRESENT IN CERTAIN SECTIONS OF THIS POWER SOURCE. WARNING: THIS EQUIPMENT GENERATES POTENTIALLY LETHAL VOLTAGES. DEATH ON CONTACT MAY RESULT IF PERSONNEL FAIL TO OBSERVE SAFETY PRECAUTIONS.
  • Page 44 7.3.6. No Output, No Front Panel LEDs Is LED on P.F.C. unit lit? OK if flickering with no load on output. If not lit, check input fuse and wiring on P.F.C. module. P.F.C. module is the one in the center. If LED is not lit and power is available at the EMI filter, replace P.F.C.
  • Page 45 is blown and a check shows signs of damage or burning on the board, DO NOT REPLACE FUSE. Replace DC-AC module. If there are no signs 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.

  • Page 46: Introduction To Pgui32

    Introduction to PGUI32 8.1. About This Program The California Instruments Graphical User Interface program -PGUI32 - was developed as a companion product to the California Instrument 801RP/1251RP AC power sources. Its main purpose is to provide a soft front panel to the instrument when connected to a PC through the RS232C serial interface.

  • Page 47: Rs232C Cable Wiring

    Note: The PGUI32 can be run in the absence of a power source. If no AC source is available , the PGUI32 can be operated in a simulation mode. The program will detect these conditions and start up in simulation mode after notifying the operator.

  • Page 48: Pgui32 Setup And Installation

    PGUI32 Setup and Installation This section covers installation of the PGUI32 from the distribution disk to the user‟s PC. Make sure the PC is capable of running Windows with at least 256 Mbyte of memory and 4 Mbyte of available hard disk space. 9.1.

  • Page 49: Trouble Shooting - Rs232C

    6. When the installation has completed, remove the CD ROM and store in a safe place. Reboot the PC to activate the new settings. You are now ready to start using the PGUI32 software. 9.4. Trouble Shooting - RS232C This section provides guidelines for resolving communication problems that may occur when using the PGUI32 software under Windows 98/XP/2000/NT .

  • Page 50: Figure 9-1: System Properties Dialog Box

    experience the same problem, the latter method is the only resolution available to you so you should skip the next paragraph as well. Procedure 1. Make sure the PGUI32 program is closed and no device is using the com port in use. 2.

  • Page 51: Registration

    1. Close the PGUI32 program if it is still open. 2. Use the Windows Explorer and select the PGUI32 directory or the directory into which you installed the PGUI32 program. 3. Locate the PGUI32.INI file (Type = Configuration Settings). 4. Open the PGUI32.INI file using a text editor such as Notepad. 5.

  • Page 52: Top Assembly Replaceable Parts

    Top Assembly Replaceable Parts Table 10: Replaceable Parts SEQ# C.I.PART # DESCRIPTION QTY. 1251RP TOP ASSEMBLY (5003-400-1) 5003-401-1 HEATSINK ASSEMBLY, DC-DC 5003-402-1 HEATSINK ASSEMBLY, DC-AC/ PFC 5003-700-1 PC ASSEMBLY, OSCILLATOR 5003-701-1 PC ASSEMBLY, RS232 / IEEE 488 FAN, 3” 24 VDC B1/B2 241187 270167...

  • Page 53: Programming Information

    Programming Information This manual contains programming information 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...
  • Page 54 Status Registers Appendix A SCPI command tree Appendix B SCPI conformance information Appendix C Error messages March 2011 RP Series...

  • Page 55: Introduction To Scpi

    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.

  • Page 56: Figure 12-1: Partial Command Tree

    A response message consists of data in a specific SCPI format sent from the AC source to the controller. The AC source sends the message only when commanded by a program message called a "query." 12.2.3. The SCPI Command Tree As previously explained, the basic SCPI communication method involves sending one or more properly formatted commands from the SCPI command tree to the instrument as program messages.

  • Page 57: Using Queries

    If you now enter :VOLTage, the active path again moves one colon to the right. The interface is now ready to accept either :RANGe or :LEVel as the next header. If you now enter :RANGe you have reached the end of the command string. The active header path remains at :RANGe If you wished, you could have entered :RANGe 136 ;LEVel 115 and it would be accepted as a compound message consisting of: 1.

  • Page 58: Structure Of A Scpi Message

    12.4. Structure of a SCPI Message SCPI messages consist of one or more message units ending in a message terminator. The terminator is not part of the syntax, but implicit in the way your programming language indicates the end of a line (such as a newline or end-of-line character). 12.4.1.

  • Page 59: Scpi Data Formats

    The basic parts of the above message are: Message Component Example Headers SOURC VOLT FREQ CURR Header Separator The colon in SOUR:VOLT Data Data Separator The space in VOLT 80 and FREQ 60 Message Units VOLT 80 FREQ 60 CURR? Message Unit Separator The semicolons in VOLT 80;...
  • Page 60 12.4.5. Message Unit Separator When two or more message units are combined into a compound message, separate the units with a semicolon (VOLT 100;FREQ 60). 12.4.6. Root Specifier When it precedes the first header of a message unit, the colon becomes the root specifier. It tells the command parser that this is the root or the top node of the command tree.
  • Page 61 <CRD> Character Response Data. 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.

  • Page 62: System Considerations

    System Considerations This chapter addresses some system issues concerning programming. 13.1. IEEE Interface The 801RP/1251RP can optionally be equipped with both RS232C and IEEE-488 interfaces. The desired interface is selected by moving the DIP switch position 5 to the correct mode. Only one interface can be active at a time.
  • Page 63 13.2.1. Serial Communication Test Program The following sample program written in Quick-BASIC can be used to check communication to the RP Series AC source over the RS232C serial interface. The interface is optional and must be installed for this to work. 'California Instruments P Series RS232C Communication Demo Program '(c) 1996 Copyright California Instruments, All Rights Reserved 'This program is for demonstration purposes only and is not to be...

  • Page 64: Figure 13-2: Rs232C Interface Cable Wiring Diagram

    'assemble the response string. The COM port needs to be 'opened AS random with a record length of 1 for it to support 'this function. Also, the device number is assumed to be #1 'Optionally, this value could be passed as a parameter to 'make this program more generic.

  • Page 65: Scpi Command Reference

    SCPI Command Reference 14.1. Introduction Related Commands Where appropriate, related commands or queries are included. These are listed because they are either directly related by function, or because reading about them will clarify or enhance your understanding of the original command or query. This chapter is organized as follows: Subsystem commands, arranged by subsystem IEEE 488.2 common commands...
  • Page 66 14.2.1. Measurement Subsystem This subsystem programs the current and voltage measurement capability of the RP Series AC source. Subsystem Syntax :MEASure :CURRent? Returns the rms value of current :VOLTage? Returns the rms value of voltage MEASure:CURRent? This query returns the rms value of the output AC current being sourced at the output terminals.
  • Page 67 14.2.2. Source Subsystem This subsystem programs all the output parameters of the RP Series AC source. Subsystem Syntax [SOURce:] CURRent: Set the rms current limit in amps. VOLTage: [LEVel] Set the rms output voltage value in volts. RANGe: Set the output voltage range. FREQuency: Set the output frequency value in Hz.
  • Page 68 VOLTage This command programs the AC rms output voltage level of the power source. Command Syntax [SOURce:]VOLTage[:LEVel] <NRf+> Parameters 0 to maximum voltage range specified by the VRAN command Unit V (rms voltage) *RST Value 0 volt Examples VOLT 250 VOLT:LEV 25 Query Syntax [SOURce:]VOLTage[:LEVel]?
  • Page 69 14.2.3. Output Subsystem This subsystem controls the 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 Examples OUTP 1 OUTP: ON Query Syntax OUTPut? Returned Parameters...
  • Page 70 14.2.4. Limit Subsystem This subsystem controls the voltage frequency and current limit of the power source. These limits are set at the factory and depend on the power source rating. It is not accessible by the user. The query format is accessible however. Subsystem Syntax LIMit: FREQuency:...
  • Page 71 LIMit:VOLTage? This command queries the maximum voltage the power source will operate at in the high voltage range. Command Syntax LIMit:VOLTage<NRf> Parameters maximum voltage available in high voltage 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.

  • Page 72: System Commands

    14.3. System Commands The system commands control the system level functions of the AC Source. 14.3.1. System Syntax Command Subsystem Syntax SYSTem: ERRor? Returns the error number and error string LOCal Go to local mode REMote Go to remote mode Define the power on register number SYSTem:ERRor? This query returns the next error number followed by its corresponding error message string...
  • Page 73 SYSTem:LOCal This command sets the interface in Local state, which enables the front panel controls. This command only applies to the RS232C interface. If IEEE 488 is used, the remote/local state is determined by the REN line on the IEEE 488 interface. Command Syntax SYSTem:LOCal Parameters...
  • Page 74 SYSTem:PON This command is used to define the register value the power source will use to initialize 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+>...

  • Page 75: Common Commands

    14.4. Common Commands Common commands begin with an * and consist of three letters (command) or three letters and a ? (query). Common commands are defined by the IEEE 488.2 standard to perform some common interface functions. The power source responds to the required common commands that control status reporting, synchronization, and internal operations.

  • Page 76: Table 11: Bit Configuration Of Standard Event Status Enable Register

    14.4.1. *CLS This command clears the following registers (see chapter 16 for descriptions of all status registers): · Standard Event Status · Status Byte · Error Queue Command Syntax *CLS Parameters None 14.4.2. *ESE This command programs the Standard Event Status Enable register bits. The programming determines which events of the Standard Event Status Event register (see *ESR?) are allowed to set the ESB (Event Summary Bit) of the Status Byte register.

  • Page 77: Table 12: Bit Configuration Of Standard Event Status Register

    14.4.3. *ESR? This query reads the Standard Event Status register. Reading the register clears it. The bit configuration of this register is the same as the Standard Event Status Enable register (see *ESE). Query Syntax *ESR? Parameters None Returned Parameters <NR1>(Register value) Related Commands *CLS...
  • Page 78 14.4.4. *IDN? This query requests the source to identify itself. It returns the data in four fields separated by commas. Query Syntax *IDN? Returned Parameters <AARD> Field Information Manufacturer xxxxxx Model number and letter nnnnnn Serial number or 0 Rev. x.x Revision level of firmware Example "CI,1251P,S123,Rev 1.0"...

  • Page 79: Table 13: *Rst Default Parameter Values

    14.4.6. *RST This command resets the AC source to a setting defined by the values in the register defined by PON if valid or by the following factory-defined states: Table 13: *RST default parameter values Item Value Item Value VOLT FREQ 60 HZ CURR...

  • Page 80: Table 15: Bit Configuration Of Status Byte Register

    14.4.8. *SRE This command sets the condition of the Service Request Enable Register. This register determines which bits from the Status Byte Register (see *STB for its bit configuration) are allowed to set the Master Status Summary (MSS). A 1 in any Service Request Enable Register bit position enables the corresponding Status Byte Register bit and all such enabled bits then are logically ORed to cause Bit 6 of the Status Byte Register to be set.

  • Page 81: Programming Examples

    Programming Examples 15.1. Introduction This chapter contains examples on how to program the AC source. Simple examples show you how to program: · output functions such as voltage and frequency · measurement functions The examples in this chapter use generic SCPI commands. See Section 12 for information about encoding the commands as language strings.

  • Page 82: Making Measurements

    The power source has two voltage ranges that are controlled by a relay. The command that controls the range is: VOLTage:RANGe 136 | 272 When the range is set to (136), the maximum rms voltage that can be programmed is 136 volts rms, but it is only on this range that the maximum output current rating is available.

  • Page 83: Status Registers

    Status Registers You can use status register programming to determine the operating condition of the AC source at any time. For example, you may program the AC source to generate an MSS bit when an event such as a current limit occurs. When the MSS bit is set, your program can then act on the event in the appropriate fashion.

  • Page 84: Standard Event Status Group

    16.2. Standard Event Status Group This group consists of an Event register and an Enable register that are programmed by Common commands. The Standard Event register latches events relating to interface communication status. It is a read-only register that is cleared when read. The Standard Event Enable register functions similarly to the enable registers of the Operation and Questionable status groups.

  • Page 85: Examples

    16.4. Examples The following section contains examples of commonly used operations involving the status registers. You can determine the reason for an MSS bit set by the following actions: Step 1 : Determine which 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.
  • Page 86 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 March 2011 RP Series...
  • Page 87 User and Programming Manual - Rev R California Instruments Appendix B: SCPI Conformance Information SCPI Version The RP Series AC power sources conform to SCPI version 1990.0. RP Series March 2011...

  • Page 88: Table 16: Error Messages

    User and Programming Manual - Rev R California Instruments Appendix C: Error Messages Table 16: Error Messages Error Number Error Message String Error Causes "No error" -100 "Command error" Generally the result of sending a command that uses incorrect syntax. -200 "Execution error"...

  • Page 89: Index

    User and Programming Manual - Rev R California Instruments Index Immunity ............6 Inrush Current ........... 2 installation ........... 8, 36 Acoustic ............. 6 program ............36 Installing software ............36 Calibration ............24 CE” mark ............6 Introduction ............1 Isolation Voltage..........
  • Page 90 User and Programming Manual - Rev R California Instruments SRE..............68 status .............. 13 queries ............. 44 STB? ............... 68 suggestions ............. 34 SYSTem:ERRor? ........... 60 RCL ..............66 SYSTem:KLOCk ..........60 registration ............39 SYSTem:LOCal ..........61 remote control ..........13 SYSTem:REMote ..........

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