5 Triggering and Gating
176 Keysight 53220A/53230A User’s Guide
The specified edge (polarity) of the gate signal crossing the threshold opens the
gate. The opposite edge (polarity) of the signal crossing the threshold closes the
gate. (More information on the INPut subsystem can be found in CChapter 4,
"53220A/53230A Input Signal Conditioning".)
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 source channel cannot be involved in the measurement.
To set the polarity and level for an external gate source:
// select the gate polarity, source, and threshold level
CONF:FREQ
SENS:FREQ:GATE:POL POS // set polarity
SENS:FREQ:GATE:SOUR INP // set source - channel 1
INP:LEV 4 // set threshold - 4V
Gate source ADVanced
Gate source ADVanced enables extended control of the gate signal through the
counter’s SENSe:GATE commands (see Advanced gate control - gate start and
Advanced gate control - gate stop hold off and gate stop later in this chapter).
Totalizing
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