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5
Common (*) Commands
Table 48 Status Byte Register (STB)
NOTE
See Also
Bit
Name
Description
When Set (1 = High = True), Indicates:
7
OPER
Operation Status Register
An enabled condition in the Operation Status
Register (OPER) has occurred.
6
RQS
Request Service
When polled, that the device is requesting service.
MSS
Master Summary Status
When read (by *STB?), whether the device has a
reason for requesting service.
5
ESB
Event Status Bit
An enabled condition in the Standard Event Status
Register (ESR) has occurred.
4
MAV
Message Available
There are messages in the Output Queue.
3
---
---
(Not used, always 0.)
2
MSG
Message
An advisory has been displayed on the
oscilloscope.
1
USR
User Event
An enabled user event condition has occurred.
0
TRG
Trigger
A trigger has occurred.
To read the instrument's status byte with RQS reported on bit 6, use the interface Serial
Poll.
• "Introduction to Common (*) Commands" on page 123
• "*SRE (Service Request Enable)" on page 140
Agilent InfiniiVision 2000 X-Series Oscilloscopes Programmer's Guide
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