GW Instek SFG-830 User Manual - Manual (Page 42)

SFG-830 p.39
＊TST？ Selftest Query
z Cause an instrument to execute an internal self-test and returns a
response showing the results of the self-test.
z A zero response indicates that self-test passed.
z A value other than zero indicates a self-test failure or error.
z The response syntax for the self-test query id defined as bellow：
0 Self-test has completed without errors detected.
1 CPU Error. The device has detected a problem in its
CPU.
2 Sys RAM Error. The system RAM failed its test.
3 Code Error. The device ROM firmware has a
checksum error.
4 8279 Error
5 A/D or D/A Error
＊WAI Wait-to-Continue Command
z Prevents an instrument from executing another command until the
operation caused by previous command is finished (sequential
operation).
＊OPC Operation Complete Command
z Sets bit 0 (Operation Complete Message) in the Standard Event
Register when all pending instrument operations are finished.