Keithley 2790, Reference Manual

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Model 2790 SourceMeter
®
Switch System Reference Manual 12-7
G *TRG — trigger
Send bus trigger to Model 2790
Use the *TRG command to issue a GPIB trigger to Model 2790. It has the same effect as a
group execute trigger (GET).
Use the *TRG command as an event to control operation. Model 2790 reacts to this trigger
if BUS is the programmed arm control source. The control source is programmed from the
TRIGger subsystem.
klqb
Details on triggering are provided in Section 8 .
Programming example
— The following command sequence configures Model 2790
to be controlled by bus triggers. The last line, which sends a bus trigger, triggers one
measurement. Each subsequent bus trigger will also trigger a single measurement.
*RST ' Restore RST defaults.
TRIG:SOUR BUS ' Select BUS control source.
TRIG:COUN INF ' Set trigger layer count to infinity.
INIT ' Take 2790 out of idle.
*TRG ' Trigger one measurement.
H *TST? — self-test query
Run self test and read result
Use this query command to perform a checksum test on ROM. The command places the
coded result (0 or 1) in the output queue. When Model 2790 is addressed to talk, the coded
result is sent from the output queue to the computer.
A returned value of zero (0) indicates that the test passed and a value of one (1) indicates
that the test failed.