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5964-8270 July, 2001 Safety Guidelines The beginning of the power supply Operating Manual has a Safety Summary page. Be sure you are familiar with the information on that page before programming the power supply for operation from a controller. ENERGY HAZARD. Power supplies with high output currents (such as the Series 668xA/669xA) can provide more than 240 VA at more than 2 V. If the output connections touch, severe arcing may occur resulting in burns, ignition or welding of parts. Take proper precautions before remotely programming the output circuits. Printing History The edition and current revision of this guide are indicated below. Reprints of this guide containing minor corrections and updates may have the same printing date. Revised editions are identified by a new printing date. A revised edition incorporates all new or corrected material since the previous printing. Changes to the guide occurring between revisions are covered by change sheets shipped with the guide. Edition 1......... July, 2001 © Copyright 2001 Agilent Technologies Inc. This document contains proprietary information protected by copyright. All rights are reserved. No part of this document may be photocopied, reproduced, or translated into another language without the prior consent of Agilent Technologies. The information contained in this document is subject to change without notice. Contents Safety Guidelines 2 Printing History 2 Contents 3 GENERAL INFORMATION 7 About this Guide 7 Documentation Summary 7 User’s Guide 7 External Documents 7 Prerequisites for Using this Guide 8 VXIplug&play Power Product Instrument Drivers 8 Downloading and Installing the Driver 8 Accessing Online Help 8 REMOTE PROGRAMMING 9 GPIB Capabilities Of The Power Supply 9 Introduction To SCPI 9 Conventions 9 SCPI Messages 10 Types of SCPI Commands 10 Structure of a SCPI Message 10 Parts of a SCPI Message 11 Traversing the Command Tree 12 Including Common Commands 14 SCPI Queries 14 Value Coupling 14 SCPI Data Formats 14 Examples 15 Controlling Output 16 Saving and Recalling States 17 Writing to the Display 17 Programming Status 17 Programming the Digital I/O Port 18 System Considerations 18 The GPIB Address 18 DOS Drivers 20 Agilent BASIC Controllers 20 Sample Program Code 20 LANGUAGE DICTIONARY 25 Introduction 25 Parameters 25 Related Commands 25 Order of Presentation 25 Common Commands 25 Subsystem Commands 25 Description Of Common Commands 26 *CLS 27 *ESE 27 *ESR? 28 *IDN? 28 *OPC *OPC? *OPT? *PSC *RCL *RST *SAV *SRE *STB? *TRG *TST? *WAI Description of Subsystem Commands ABOR Calibration Commands Current Subsystem CURR CURR:TRIG CURR:PROT:STAT DIG:DATA Display Subsystem DISP DISP:MODE DISP:TEXT Initiate Subsystem INIT INIT:CONT Measure Subsystem MEAS:CURR? MEAS:VOLT? Output Subsystem OUTP OUTP:PROT:CLE OUTP:PROT:DEL OUTP:REL OUTP:REL:POL Status Subsystem STAT:PRES Status Operation Registers STAT:OPER? STAT:OPER:COND? STAT:OPER:ENAB STAT:OPER NTR STAT:OPER PTR Status Questionable Registers STAT:OUES? STAT:QUES:COND? STAT:QUES:ENAB STAT:QUES NTR STAT:QUES PTR System Commands SYST:ERR? SYST:LANG SYST:VERS? Trigger Subsystem 28 29 29 29 30 31 31 32 32 33 33 33 34 34 34 35 35 35 35 36 36 36 37 37 38 38 38 38 38 38 39 39 39 39 40 40 41 41 41 41 41 42 42 42 43 43 43 43 44 44 44 44 45 45 45 TRIG 45 TRIG:SOUR 46 Voltage Subsystem 46 VOLT 46 VOLT:TRIG 46 VOLT:PROT 47 Command Summary 47 Programming Parameters 49 STATUS REPORTING 51 Power Supply Status Structure 51 Operation Status Group 51 Register Functions 51 Register Commands 51 Questionable Status Group 53 Register Functions 53 Register Commands 53 Standard Event Status Group 53 Register Functions 53 Register Commands 53 Status Byte Register 54 The RQS Bit 54 The MSS Bit 54 Determining the Cause of a Service Interrupt 54 Service Request Enable Register 54 Output Queue 54 Initial Conditions At Power On 54 Status Registers 54 The PON (Power-On) Bit 55 Examples 55 Servicing an Operation Status Mode Event 55 Adding More Operation Events 56 Servicing Questionable Status Events 56 Monitoring Both Phases of a Status Transition 56 SCPI Command Completion 57 DFI (Discrete Fault Indicator) 57 RI (Remote Inhibit) 57 ERROR MESSAGES 59 Power Supply Hardware Error Messages 59 Calibration Error Messages 59 System Error Messages 59 SCPI CONFORMANCE INFORMATION 61 SCPI Version 61 SCPI Confirmed Commands 61 SCPI Approved Commands 61 NON-SCPI Commands 62 COMPATIBILITY LANGUAGE 63 INDEX 67 General Information About this Guide This guide provides remote programming information for the following series of GPIB programmable power supplies: • AGILENT Series 664xA, 665xA, 667xA, 668xA, and 669xA You will find the following information in the rest of this guide: Chapter 2 Introduction to SCPI messages structure, syntax, and data formats. Examples of SCPI programs. Chapter 3 Dictionary of SCPI commands. Table of programming parameters. Chapter 4 Description of the status registers. Chapter 5 Error messages. Appendix A SCPI conformance...

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