User`s guide

166 53220A/53230A User’s Guide
5 Triggering and Gating
INFinity|DEFault}
[SENSe:]TOTalize:GATE:TIME? {MINimum|MAXimum|DEFault}
(query form)
CONFigure and MEASure automatically set the gate source to TIME, and the
gate time to the value of their gate_time parameter.
To specify a gate time and source directly for totalizing:
// set gate time and source
SENS:TOT:GATE:TIME 10 // set gate time = 10s
SENS:TOT:GATE:SOUR TIME // set gate source
External Gate Sources
Gate sources EXTernal, INPut[1], and INPut2 are external sources.
EXTernal is the counter’s rear panel ‘Gate In/Out’ BNC, and
INPut[1]/INPut2 (represented by softkeys Chan 1 and Chan 2) are the
counter’s channel 1 and channel 2 inputs.
External Gate Signal Polarity
When using the external gate sources, the polarity of the gate signal and there-
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.