EXFO FTB-1v2 Guide De L'utilisateur page 429

Response(s)
Example(s)
See Also
FTB-1v2 and FTB-1v2 Pro
IEEE 488.2 and Specific Command Reference
RegisterValue:
The response data syntax for <RegisterValue> is
defined as a <NR1 NUMERIC RESPONSE DATA>
element.
The <RegisterValue> ranges from 0 through 255.
The <RegisterValue> value, expressed in base 2
(binary) represents the bit values of the Status
Byte Register. See the contents of this register
below.
Bit Weight
N.U. 128 Not used
RQS/ 64 ReQuest Service (read by serial
MSS polling)/MaSter Summary bit
(read by *STB?)
ESB 32 Event Summary Bit Enable
MAV 16 Message AVailable Enable
N.U. 8 Not used
EAV 4 Error / Event AVailable Enable
N.U. 2 Not used
N.U. 1 Not used
*STB? returns 68
where 68 = (bit MSS and bit EAV)
*SRE
*SRE?
IEEE 488.2 Required Commands
Meaning
*STB?
417