When you have read all errors from the error queue, the ERR annunciator turns off.
l If more have accumulated than the queue can hold, the last error stored in the queue (the most
recent error) is replaced with -350,"Error queue overflow". No additional errors are stored until you
remove errors from the queue. If no errors have occurred when you read the error queue, the
instrument responds with +0,"No error".
l The error queue is cleared by the *CLS and when power is cycled. It is not cleared by a *RST.
l Errors have the following format (the error string may contain up to 80 characters).
<error code>,<error string> For a list of error codes and message strings, see SCPI Error
Messages.
SYSTem:GROup:CATalog?
This command does NOT apply to models N678xA SMU .
Returns the groups that have been defined. The defined groups are enclosed in quotes.
Parameter Typical Return
(none) <grouped channels>
returns the channels that are grouped: SYST:GRO:CAT?
l Example response with 4 channels; no channels grouped: "1","2","3","4"
l Example response with channels 1 and 2 grouped; 3 and 4 grouped: "1,2","3,4"
l Example response channels 1 - 3 grouped; channel 4 not grouped: "1,2,3","4"
SYSTem:GROup:DEFine <chanlist>
This command does NOT apply to models N678xA SMU .
Groups multiple channels to create a single channel. This effectively creates a single output with
higher current and power capability. You can group up to four channels per mainframe.
Parameter Typical Return
<channel list> (none)
Define channels 1 , 2, and 3 as a group: SYST:GRO:DEF1:3
Define channels 1 and 4 as a group: SYST:GRO:DEF1,4
l All channels in a group must have identical model numbers and have identical options installed.
Refer to Output Groups for more information.
l For the group definitions to take effect, reboot the unit by cycling AC power or sending the
SYSTem:REBoot command.
Keysight N6700C Operating and Service Guide 293
5 SCPI Programming Reference
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