VXI VT1538A user manual SENSeFUNCtionPWIDth, SENSeFUNCtionQUADrature, Parameters, Comments

<ch_list> must be channels on an E1538A SCP.

SENS:PER:MODE

•*RST Condition: SENS:FUNC:COND and INP:POL NORM for all digital SCP channels

•Send with VXIplug&play Function: hpe14XX_cmd(...)

Usage See “About Period and Frequency Measurements” on page 16.

SENS:FUNC:PER (@144)

[SENSe:]FUNCtion:PWIDth

[SENSe:]FUNCtion:PWIDth <avg_count>,(@<ch_list>) configures channels to measure the input signal pulse width. See “Measure Pulse Width”

on page 20.

Parameters

Parameter	Parameter	Range of	Default
Name	Type	Values	Units
avg_count	numeric (uint32)	1 to 255 MINimum MAXimum	seconds
ch_list	string	100 - 163	none

Comments •

•<avg_count> sets the number of pulses to average when forming the pulse duration value. More counts give more accurate readings, but slower response to changing pulse widths.

•*RST Condition: SENS:FUNC:COND and INP:POL NORM for all digital SCP channels.

•Send with VXIplug&play Function: hpe14XX_cmd(...)

Usage See “Measure Pulse Width” on page 20.

SENS:FUNC:PWID 10,(@146,147)

channels 46&47 meas pulse width

[SENSe:]FUNCtion:QUADrature

[SENSe:]FUNCtion:QUADrature [<preset_count>,](@<ch_list>)

configures a pair of E1538 channels to measure quadrature count. See

“Sense Quadrature Position” on page 21.

52 Agilent E1538A Enhanced Frequency/Totalize/PWM SCP