EXFO FTB-1v2 Guide De L'utilisateur page 428

IEEE 488.2 and Specific Command Reference
IEEE 488.2 Required Commands
Description
Syntax
Parameter(s)
Response Syntax
416
With the *STB? query you can read the status
byte and Master Summary Status bit. See the
content of this register below.
MSB
RQS/
N.U. ESB
MSS
*STB?
None
<RegisterValue>
Status By te Register
MAV N.U. EAV
FTB-1v2 and FTB-1v2 Pro
*STB?
LSB
N.U. N.U.