R3131 Spectrum Analyzer Operation Manual
Bit
Function Description
7
OPR
The OPR bit is a summary of the standard operation
status register
6
MSS The RQS bit is true when the MSS bit of the status
byte register is set to 1. The MSS bit is the summary
bit for the entire status data structure.
The serial poll cannot read out the MSS bit. (How-
ever, the MSS bit is understood to be 1 when the RQS
bids 1.)
To read the MSS bit, use the common command
*STB?. The *STB? command can read out bit 0 to 5
and bit 7 of the status byte register and the MSS bit.
In this case, neither the status byte register nor the
MSS bit can be cleared.
The MSS bit cannot become 0 until all the unmasked
factors in the status register structure have been
cleared
5
ESB
The ESB bit is a summary of the standard event regis-
ter
4 MAV
Summary bit for the output buffer.
This instrument does not use this bit.
3 to 1
This is always 0
0 UCAL
This is set to 1 when an signal level error occurs
because the sweep is too fast
Bit Functional definition
Description
7
Power on
This is set to 1 when the spectrum analyzer is
switched on
6
This is always 0
5 Command Error
This is set to 1 when the parser finds a syntax error
4
Execution Error This is set to 1 when the system fails to execute an
instruction received as a GPIB command for some
reason (such as out-of-range parameter)
3 Device Dependent
Error
This is set to 1 when errors other than command
errors, execution errors, or query errors occur
2
Query Error This is set to 1 when no data exists or data has been
deleted when the controller attempts to read out data
from the spectrum analyzer
I Request Control
Not supported in the spectrum analyzer
0 Operation Complete Not supported in the spectrum analyzer
4.1 GPIB Remote Programming
The table below explains the meanings of the bits in the status byte register.
(5) Standard event register
The table below explains the meanings of the bits in the standard event register.
4-13
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