Automatic Gate Extension - Agilent Technologies 53220A User Manual

Gate Hold Off and Stop Configuration Example
The following example shows the sequence commonly used when configuring
the stop gate hold off and stop gate using low-level commands.
//configure the counter for an externally gated time
//interval measurement. The gate start and stop signals are
//applied to the rear panel 'Gate In' BNC. Gate closing is
//held off for 1 second after the stop gate signal is
//received.
//
CONF:TINT (@1),(@2)
READ?

Automatic Gate Extension

Inherent to 53220A/53230A frequency and period measurements is auto-
matic gate extension in which the measurement ends one edge (event) of the
input signal after the gate is closed (stopped). Thus, the sample count
(SAMPle:COUNt) does not increment and cause a potential state change in
the trigger/gate cycle (Figure 5-2) until the gate extension is complete.
53220A/53230A User's Guide
TRIG:SOUR INT
TRIG:COUN 1
SAMP:COUN 2
SENS:GATE:STAR:SOUR EXT
SENS:GATE:EXT:SOUR EXT
SENS:GATE:STAR:SLOP POS // set a pos. start gate slope
OUTP:STAT OFF
//
// configure hold off and stop gate
//
SENS:GATE:STOP:HOLD:SOUR TIME // hold off source
SENS:GATE:STOP:HOLD:TIME 1
SENS:GATE:STOP:SOUR EXT // external stop gate source
SENS:GATE:EXT:SOUR EXT
SENS:GATE:STOP:SLOP POS
SENS:TINT:GATE SOUR ADV
// initiate counter and take reading
// time interval meas ch1-ch2
// use internal trigger source
// specify one trigger
// set 2 readings (gate cycles)
// set an external gate source
// select rear panel Gate In BNC
// disable BNC as an output
//hold off gate close for 1s
// select rear panel Gate In BNC
// select pos. stop gate source
// low-level gate control
Triggering and Gating 5
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