B&K Precision MDL Series - Programming Manual User Manual
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*STB?
This query reads the Status Byte register, which contains the status summary bits and the Output
Queue MAV bit. Reading the Status Byte register does not clear it. The input summary bits are cleared
when the appropriate event registers are read (see Section 1.4 Programming the Status Registers for
more information). A serial poll also returns the value of the Status Byte register, except that bit 6
returns Request for Service (RQS) instead of Master Status Summary (MSS). A serial poll clears RQS, but
not MSS. When MSS is set, it indicates that the electronic load has one or more reasons for requesting
service.
Query Syntax *STB?
Parameters None
Returned Parameters
Related Commands *SRE *ESR *ESE
*TRG
This command generates a trigger to any system that has BUS selected as its source (for example,
TRIG:SOUR BUS). The command has the same effect as the Group Execute Trigger (
Command Syntax *TRG
Parameters None
Related Commands ABOR INIT TRIG:IMM
*TST?
This query causes the electronic load to do a self-test and report any errors.
Query Syntax TST?
Parameters None
Related Commands
0 indicates the electronic load has passed self-
test. Non-zero indicates an error code.
*WAI
This command instructs the electronic load not to process any further commands until all pending
operations are completed. Pending operations are complete when:
•
All commands sent before *WAI have been executed. This includes overlapped commands.
Most commands are sequential and are completed before the next command is executed.
Overlapped commands are executed in parallel with other commands. Commands that affect
input voltage or state, relays, and trigger actions are overlapped with subsequent commands