Anritsu MS9740A - STB [Status Byte]; TST [Self-Test Query]; WAI [Wait to Continue]

3.4 Device Message Details
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Message Details
*STB [Status Byte]
Function
This command queries the status byte register.
Syntax
*STB?
*TST [Self-Test Query]
Function
This command queries the results of self-diagnosis.
0 Error does not occur after completing test
1 Tes t cannot be executed. Even though test can be executed, error
occurs.
Syntax
*TST?
Example of Use
*TST?
>0
*WAI [Wait to Continue]
Function
This command holds execution of the next message until processing of
the message sent before *WAI is completed.
Syntax
*WAI
Example of Use
INIT ; *WAI ; :TRACe:DATA:Y? TRA