Technical data

MEASure Commands SCPI Commands Reference
Agilent 81133A/81134A Pulse Generator Programming Guide, March 2007 37
:MEASure:FREQuency?
Syntax :MEAS:FREQ?
Form Query
Description This command is used to measure the operating frequency of the
instrument.
In internal mode ( :TRIGger:SOURce IMMediate ) the frequency
returned is the measured internal clock frequency (not the
programmed value).
In external mode ( :TRIGger:SOURce EXTernal ) the frequency returned
is that measured at the Clock Input connector. If an invalid signal,
or no signal, is present at the Clock Input connector, a value of
zero is returned.
The query does not return a value immediately, but waits for the
internal frequency counter to complete its next measurement cycle.
This can take about half a second.
NOTE The instrument is stopped when this command is executed. Thus,
during the measurement, no signals will be output.
NOTE When working in an automated test system, if the clock frequency
is known, it is better to set it directly instead of reading it from
the instrument. This is because:
• This method is faster since it eliminates the measurement time.
• The instrument is not stopped.
Parameter –
*RST value –
Example :MEAS:FREQ?