Triggering and Gating 5
Keysight 53220A/53230A User’s Guide 193
When using external sources INPut[1] and INPut2, the channel selected as the
gate source cannot be the same channel on which the measured signal is applied.
That is, the gate start source channel cannot be involved in the measurement.
Gate start configuration example
The following example shows low-level user control of the start gate by setting
multiple parameters.
//configure the counter for an externally gated frequency
//measurement. The gate start signal is applied to the rear
//panel ‘Gate In’ BNC
CONF:FREQ (@2) // frequency measurement on channel 2
TRIG:SOUR INT // use internal trigger source
SAMP:COUN 3 // set 3 readings (gate cycles)
SENS:GATE:STAR:SOUR EXT // set an external gate source
SENS:GATE:EXT:SOUR EXT // select rear panel Gate In BNC
OUTP:STAT OFF // disable BNC as an output
SENS:GATE:STAR:SLOP POS // set a pos. start gate slope
SENS:FREQ:GATE SOUR ADV // low-level gate control
Setting a gate start delay
When using either an internal (immediate) or external signal to start (open) the
gate, a delay from when the signal is received to when the gate is started (opened)
can be specified. The delay source and its parameters are set with the commands:
[SENSe:]GATE:STARt:DELay:SOURce {IMMediate|EVENts|TIME}
[SENSe:]GATE:STARt:DELay:SOURce? (query form)
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