Examples Of Voltage And Current Waveform Query - Pacific UPC-32 Operation Manual

SECTION 5 REMOTE OPERATION

5.7.7 EXAMPLES OF VOLTAGE and CURRENT WAVEFORM QUERY

This is an example of how to query the UPC for metered waveform values for phase A voltage and
current.
:FETCh? VOLTage1;CURRent1 <eos>
An example command (substitute for step B above) for obtaining simultaneous RMS voltage and current
values and waveforms for PHASE A is as follows.
:MEASure:VOLTage1?;CURRent1?;:FETCh? VOLTage1;CURRent1 <eos>
Step A. Address the UPC as a listener.
Step B. Select Voltage A and Load Current A for waveform query by
sending the following command.
NOTE: <eos> is a LINE FEED (0Ahex, 10dec).
NOTE: This command should immediately follow a :MEASure
command in one Program Message to obtain waveform data
corresponding with the values retrieved by the :MEASure command
(example shown below).
NOTE: All parameters will be measured simultaneously upon receipt
of the :FETCH? command.
milliseconds depending upon Frequency and other factors. The values
are not stored in the UPC and another :FETCH? command will re-
measure the values.
Step C. Address the UPC as a talker.
The UPC returns a string representing the last metered data
waveform. Each waveform consists of 512, NR2 type numbers
separated by commas. Each waveform is terminated by a semi-colon.
Step D. Un-address UPC.
104
This may take several hundred