186 53220A/53230A User’s Guide
5 Triggering and Gating
The specific command which sets the gate stop source is:
[SENSe:]GATE:STOP:SOURce {IMMediate|EXTernal}
[SENSe:]GATE:STOP:SOURce? (query form)
- gate source IMMediate stops (closes) the measurement gate immediately fol-
lowing any gate stop hold off.
- gate source EXTernal sets the gate stop source to be specified by the com-
mand:
[SENSe:]GATE:EXTernal:SOURce {EXTernal|INPut[1]|INPut2}
[SENSe:]GATE:EXTernal:SOURce? (query form)
- gate source EXTernal is the counter’s rear panel ‘Gate In/Out’ BNC.
- gate source INPut[1]and INPut2 (not available with time interval measure-
ments) are the counter’s channel 1 and channel 2 inputs (front or rear panel -
Opt. 201).
CONFigure and MEASure do not change the gate stop source setting. Follow-
ing a reset (*RST) or instrument preset (SYSTem:PRESet or Preset key), gate
stop source EXTernal is selected.
NOTE
OUTput:STATe OFF must be set when using gate source EXTernal. See
“Enabling Gate Signals on the ‘Gate In/Out BNC” for more information and for
information on using gate signals to synchronize other instruments.
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