80 Communication Command Reference
separating 5 queries. The controller responds to this command string with a
response that has 5 values using a comma (,) as a separator.
COMMAND STRING:
PM:P?;PM:ATT?;PM:L?;ERR?
INSTRUMENT RESPONSE:
1.2450,1,810,0
8.2.1 Activate a Specific Channel
The command set of the power meter, by default, operates on channel A. In
case of 2936-R power meter where there are 2 channels, the users can send
commands for channel B after selecting this channel through
“PM:CHANnel” command. Once a desired channel is selected using this
command, all subsequent commands sent to the power meter will be
addressed to that channel until it is changed again. The power meter defaults
to channel “A” following a reset.
Note that the channel selected is specific to the communication interface over
which the PM:CHANnel command was issued. For instance, if
“PM:CHANnel 1” command was issued over RS-232 interface and
“PM:CHANnel 2” command was issued over USB interface, all subsequent
commands issued through RS-232 and USB interfaces will be addressed to
channels A and B respectively.
Some commands do not apply to a particular channel, such as “BEEP”. The
behavior of these commands is independent of the channel currently selected.
8.3 Command Description
8.3.1 Command Glossary
Root level Commands/Queries Summary
Recall configuration settings
Save configuration settings
Sets the instrument’s USB address
Returns the instrument’s USB address
Turns the beeper on or off, or beeps once.
Returns the status of the beeper.
Returns the status of echo
Returns errors generated since the last query.
Returns errors and their corresponding error text generated since the last
query.
Table 2 Root level Commands/Queries Summary
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