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SCPI Commands for the Counter
3–68
VX4101A MultiPaq Instrument User Manual
seconds. If the <expected value> argument is used, the expected period of the
input signal should be used, not the expected pulse width. This measurement
uses both comparators of the input channel. The reference value is used to set the
comparator threshold levels to a percentage of the peak-to-peak signal.
If a reference value is specified and INPut:SETup:AUTO is set to OFF,
INPut:SETup:AUTO will be set to ONCE. If a reference value is not specified,
the input channel comparators 1 and 2 levels will be set to 0 V.
This command will modify the following:
function - set to PWID or NWID
aperture - described below
aperture/events mode - set to APERture
The input channel attenuation, offset, gain, level and slope can be modified
If neither of the optional arguments are used:
aperture is set to the default value
If only the <expected value> argument is used:
aperture is set to the default value
If both <expected value> and <resolution> are used the aperture is calculated as
follows:
aperture + 10
(–9)logtexpectedu–logtresolutionu)
with a minimum of 1e–8 and a maximum of 5 seconds. A longer aperture may
be set with the SENSe:PWIDth:APERture command.
CONFigure[1|2|3]([:SCALar]|:ARRay):PERiod [<array size>[,expected value>[,<reso-
lution>]]]
This command configures the Counter to measure the period of the signal on the
CONFigure suffix input channel. The units of <expected value> and <resolu-
tion> are seconds.
This command will modify the following:
function - set to PERiod
aperture - described below
aperture/events mode - set to APERture
if autosetup mode is ON or ONCE, the input channel attenuation, offset, gain,
level, and slope can be modified
If neither of the optional arguments are used:
aperture is set to the default value