5 Triggering and Gating
192 Keysight 53220A/53230A User’s Guide
POSitive starts (opens) the gate on a positive edge on the Gate In/Out BNC or
channel 1/channel 2 input. NEGative starts the measurement on a negative edge
on the Gate In/Out BNC or channel 1/channel 2 input. The gate is stopped
(closed) based on the corresponding stop gate settings.
Following a reset (*RST) or instrument preset (SYSTem:PRESet or Preset key), a
negative slope is selected.
External gate start signal threshold
For external sources INPut[1] and INPut2 (Chan 1 and Chan 2 softkeys), a fixed
input threshold voltage must also be specified in addition to the gate signal slope.
This is done using the command:
INPut[{1|2}]:LEVel[{1|2}][:ABSolute]{<volts>|MINimum|
MAXimum|DEFault}
INPut[{1|2}]:LEVel[{1|2}][:ABSolute]?[{MINimum|MAXimum|DEFault}]
(query form)
The specified edge (slope) of the gate signal crossing the threshold starts the
gate. (More information on the INPut subsystem can be found in Chapter 4,
"53220A/53230A Input Signal Conditioning")
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