Keysight 34420A - HP BASIC;GPIB Program Example 3

6 Application Programs
238 Keysight 34420A User’s Guide
HP BASIC/GPIB Program Example 2
This program example demonstrates how two input channels can be
independently configured and used.
10 !
20 ! This program configures the meter for voltage measurements on two
30 ! input channels. The channels are set to different ranges and
40 ! resolutions to show the independence of the settings for each channel.
50 !
60 REAL Rdg_ch1,Rdg_ch2,Null_ch1,Null_ch2 ! Dimension variables
70 CLEAR 7 ! Clear interface - send "device clear"
80 ASSIGN @Meter TO 722 ! Assign I/O path to address 722
90 OUTPUT @Meter;"*RST" ! Reset the meter
100 OUTPUT @Meter;"*OPC?" ! Send "1" to output buffer when complete
110 ENTER @Meter;Value ! Enter value
120 !
130 ! Configure channel 1 for dc volts, 1 volt range with 10 mV resolution
140 ! Configure channel 2 for dc volts, 1 mV range with least resolution
150 OUTPUT @Meter;"CONF:VOLT:DC 1,0.01,(@FRON1);:CONF:VOLT:DC 0.001,MAX,(@FRON2)"
160 !
170 OUTPUT @Meter;"ROUT:TERM FRON1" ! Select channel 1
180 OUTPUT @Meter;"READ?" ! Take reading; send to output buffer
190 ENTER @Meter;Rdg_ch1 ! Enter reading
200 !
210 OUTPUT @Meter;"SENS1:VOLT:DC:NULL ON" ! Enable null on channel 1
220 OUTPUT @Meter;"SENS1:VOLT:DC:NULL:VAL ";Rdg_ch1 ! Store value in register
230 !
240 OUTPUT @Meter;"READ?" ! Take nulled reading; send to output buffer
250 ENTER @Meter;Null_ch1 ! Enter nulled reading