Agilent Technologies E3647A User Manual

Chapter 6 Application Programs
Example Program for C and C++
141
6
if(bGPIB){ /* For use with GPIB 7 address, use "GPIB::7::INSTR" address format */
strcpy(VISA_address,"GPIB::");
strcat(VISA_address,GPIB_Address);
strcat(VISA_address,"::INSTR");
}
else{ /* For use with COM2 port, use "ASRL2::INSTR" address format */
strcpy(VISA_address,"ASRL");
strcat(VISA_address,COM_Address);
strcat(VISA_address,"::INSTR");
}
/* Open communication session with the power supply */
ErrorStatus = viOpenDefaultRM(&defaultRM);
ErrorStatus = viOpen(defaultRM,VISA_address,0,0,&power_supply);
CheckError("Unable to open port");
if(!bGPIB)
SendSCPI("System:Remote");
}
void SendSCPI(char* pString)
{
char* pdest;
strcpy(commandString,pString);
strcat(commandString,"\n");
ErrorStatus = viPrintf(power_supply,commandString);
CheckError("Can’t Write to Driver");
if (bGPIB == 0)
delay(1000); /* Unit is milliseconds */
pdest = strchr(commandString, ’?’); /* Search for query command */
if( pdest != NULL ){
ErrorStatus = viScanf(power_supply,"%s",&ReadBuffer);
CheckError("Can’t Read From Driver");
strcpy(pString,ReadBuffer);
}
}
void ClosePort()
{
/* Close the communication port */
viClose(power_supply);
viClose(defaultRM);
}
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Agilent Technologies E3647A Specifications

General

Brand	Agilent Technologies
Model	E3647A
Category	Power Supply
Language	English

Summary

Quick Start

Preliminary Checkout

Steps to verify that the power supply is ready for initial use and operation.

Output Checkout

Procedures to check basic voltage and current functions with no load.

General Information

Safety Considerations

Details safety and EMC requirements for the power supply, including relevant standards and guidelines.

Installation

Output Connections

Front-Panel Operation and Features

Constant Voltage Operation

Step-by-step guide for configuring and operating the power supply in constant voltage (CV) mode.

Constant Current Operation

Step-by-step guide for configuring and operating the power supply in constant current (CC) mode.

Configuring the Remote Interface

Programming Overvoltage Protection

Details on setting the OVP trip level, enabling the circuit, and clearing overvoltage conditions.

Remote Interface Reference

SCPI Command Summary

Output Setting and Operation Commands

Error Messages

Execution Errors

Self-Test Errors

Specifications

Performance Specifications

Appendix: Service Information

Service Information

Covers procedures for verifying operation, returning the unit, troubleshooting, and test equipment.

Operating Checklist

Troubleshooting Hints

Self-Test Procedures