USB Stick Synthesizer
IEEE 488.2 Command Reference
12. *STB?
The
*STB?
(STatus Byte) query returns bit 0 to 5 and bit 7 of the AR2010 USB Stick Synthesizer status
byte and returns the Master Summary Status (MSS) as bit 6. The MSS is inclusive OR of the bitwise
combination (excluding bit 6) of the Status Byte and the Service Request Enable registers. The format of
the return is an integer between 0 and 255. Table 7.6 shows the contents of this register.
Table 7.6:
*STB? mapping
Bit
Base 2
Meaning
0
1
Not used
1
2
Device Dependent
0 - No device status condition has occurred
1- A device status condition has occurred
2
4
Error/Event Queue
0 = Queue empty
1 = Queue not empty
3
8
Questionable Status Summary
0 - No QUEStionable status conditions have occurred
1 - A QUEStionable status condition has occurred
4
16
Message Available
0 - no output messages are ready
1 - an output message is ready
5
32
Event Status Bit
0 - no event status has occurred
1 - an event status condition has occurred
6
64
Master Summary Status
0 - USB Stick Synthesizer not requesting service
1 - there is at least one reason for requesting service
7
128
Operation Status Summary
0 = No OPERation status conditions have occurred
1 = An OPERation status condition has occurred
Applied Radar, Inc.
Revision 2.0.1
57
