Tutorial
PCR-WE Interface Manual
321
Measurement (ACQuire)
The ACQuire group is the measurement trigger subsystem. This subsystem is used
to measure voltage, current, and power.
There are easy measurements and advanced measurements.
■
Simple measurement
This product has functions for returning the measured voltage, current, and power.
The easiest measurement method is using the MEASure command.
The MEASure command starts a new measurement. Because this query starts a new
measurement each time that it is sent, you cannot use it to synchronize the measure-
ment of multiple items. The measurement method explained in
“
Advanced measure-
ment
”
allows you to separate the measurement start operation and the data query
operation.
Measuring the voltage and current
MEASure:VOLTage:ACDC? 'Queries the rms voltage
MEASure:CURRent:ACDC? 'Queries the rms current
MEASure:VOLTage:DC? 'Queries the average voltage
MEASure:CURRent:DC? 'Queries the average current
The current measurement function has the following additional parameters.
MEASure:CURRent:AMPLitude:MAXimum? 'Queries the peak current
MEASure:CURRent:AMPLitude:MAXimum:HOLD? 'Queries the peak current (the
held value)
MEASure:CURRent:CREStfactor? 'Queries crest factor
MEASure:CURRent:AMPLitude:MAXimum:HOLD queries the maximum peak current
after the product is turned on or after the peak current is cleared explicitly. Use the
SENSe:CURRent:PEAK:CLEar command to clear the peak current (the held value).
SENSe:CURRent:PEAK:CLEar
The *RST or *RCL command does not clear the peak current (the held value).
Normally, it takes approximately 110 ms for a single measurement to complete. If you
send the MEASure query multiple times, data acquisition will take a long time. If you
want to acquire the data of multiple parameters, measure using the method explained