Keysight Truevolt Series Operating And Service Manual page 271

SCPI Programming Reference
*OPC?
Returns 1 to the output buffer after all pending commands complete. Other commands cannot be
executed until this command completes.
Parameter
(none)
Configure 100 DC voltage measurements and return "1" when the measurements complete:
CONF:VOLT:DC
SAMP:COUN 100
INIT
*OPC?
Use this command to synchronize your application with the instrument.
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The difference between *OPC and *OPC? is that*OPC sets a status bit when the operation completes,
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and *OPC? outputs "1" when the operation completes.
*OPT?
Returns a string identifying any installed options.
Parameter Typical Return
(none) (see below)
Return the installed options:
*OPT?
This query returns a string with the following format:
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34460A: {GPB|0},{LAN|0},{SEC|0}
34461A: {GPB|0},{SEC|0}
34465A/70A: {GPB|0},{SEC|0},{DIG|0},{MEM|0}
A 0 is returned for options that are not installed. For example, a 34461A with only GPIB installed
returns GPB,0. A 34460A with only GPB and SEC installed returns GPB,0,SEC.
Options vary by model, as
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shown here.
Typical Return
Keysight True volt Series Operating and Service Guide