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VA Sets the VA function; Vac or Vdc must first have been selected in the main
display and the meter must be connected for both voltage and current
measurement. VA shows in the secondary display.
VA? Returns the result of the VA calculation.
The syntax of the response is:
<ASCII data><RMT>
Where <ASCII data> is a character string divided into two fields (value
followed by units) exactly as for the standard READ? response; see that
command section for details. If the VA function is not running a zero value
will be returned.
CANCEL Cancels the second level modifier currently running.
16.2.6 Data Logging Commands
LOGON <CPD> Sets Data Logger running and optionally sets the internal logger interval
timer; when no interval is specified the existing value is used.
The following
<CPD> can be used:
<ALL> Sets the interval timer to the sample speed (SPS rate).
<OFF> Disables the interval timer but still allows manual triggering.
Alternatively a value between 0 and 9999 can be set.
Setting the interval to 0 disables the timer but still allows the logger to be
triggered manually (from the keyboard) or remotely by external trigger or by
remote command (TRIG), see below.
LOG? Returns the contents of all valid locations in the data logger store, starting at
location 001.
The syntax of the response is:
<ASCII data><RMT>
Where <ASCII data> consists of up to 500 complete results, separated by
commas, each result comprising three fields. The first filed is the reading
number, consisting of 3 digits followed by three spaces. The following two
fields contain the measurement value and measurement units respectively,
in exactly the same format as the response to the standard READ?
command, see that command section for details.
There is a delay in the response to the LOG? Command that varies with the
total number of stored readings to be returned. The more stored readings
the longer the delay. The delay is approximately 25ms per reading.
TRIG With the data logger on, a reading will be stored each time the TRIG
command is set. Since the remote command is OR’ed with the internal
timer, either both can be run together or the internal timer can be disabled
by setting the interval to 0 seconds.
LOGCOUNT Returns the total number of stored readings.
The syntax of the response is:
<NR1><RMT>
Where <nr1> is a value between 1 and 500.
CANCEL Stops the logger running.
LOGCLEAR Cancels the logger function, if it is running, and clears the results from the
logger memory.
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