D – Example Programs

BASIC

The BASIC for controllers and BASIC for Windows both provide access to GPIB functions at the operating system level. This makes it unnecessary to have the header files required in front of DOS applications programs. Also, you do not have to be concerned about controller "hangups" as long as your program includes a timeout statement. Because the dc source can be programmed to generate SRQ on errors, your program can use an SRQ service routine for decoding detected errors. The detectable errors are listed in Appendix C.

Example 2. Controller Using BASIC

1000

!Dc source at stand-alone address = 706

1005

OPTION

BASE 1

 

1010

DIM Codes$[80],Response$[80],Mode$[32]

 

1015

!

 

 

1020

!Program dc source to CV mode with following voltage and current

1025

OUTPUT

706;"VOLTAGE MAX;CURRENT MAX"

 

1030

!

 

 

1035

!Query

dc source outputs and print to screen

1040

OUTPUT

706;"MEASURE:VOLTAGE?;CURRENT?"

!Query output levels

1045

ENTER 706;Vout,Iout

 

1050

PRINT "The output levels are ";Vout;" Volts and ";Iout" Amps"

1055

!

 

 

1060

!Program current triggered level to a value insufficient to maintain

1065

!supply within its CV operating characteristic

1070

OUTPUT

706;"CURR:TRIG MIN"

 

1075

!

 

 

1080

!Set operation status mask to detect mode change from CV to CC

1085

OUTPUT

706;"STAT:OPER:ENAB 1024;PTR 1024"

1090

!

 

 

1095

!Enable Status Byte OPER summary bit

 

1100

OUTPUT

706;"*SRE 128"

 

1105

!

 

 

1110

!Arm trigger circuit and send trigger to dc source

1115

OUTPUT

706;"INITIATE:SEQUENCE1;TRIGGER"

1130

!Poll for interrupt caused by change to CC mode and print to screen

1135

Response=SPOLL(706)

 

1140

IF NOT

BIT (Response,7) THEN GOTO 1130

!No OPER event to report

1145

OUTPUT

706;"STAT:OPER:EVEN?"

!Query status operation register

1150

ENTER 706;Oevent

!Read back event bit

1155

IF BIT(Oevent,10) THEN PRINT "Supply switched to CC mode."

1160

!

 

 

1165

!Clear

status

 

1170

OUTPUT

706;"*CLS"

 

1175

!

 

 

1180

!Disable output and save present state in location 2

1185

OUTPUT

706;"OUTPUT OFF;*SAV 2"

 

1190

END

 

 

168

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Agilent Technologies D, 66311B, 66309B, 66111A manual Example 2. Controller Using Basic, 168
Page 167 Page 169

66111A, 66309B, 66311B, D specifications

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