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Status Reporting System
Status Register Structure
Table C-1
Status Bit Definitions of Status Byte (STB)
Keysight E4981A 120 Hz/1 kHz/1 MHz Capacitance Meter
Bit
Name
Position
0 to 3
Not used
4
MAV (Message Available)
Standard Event Status
5
Register Summary
RQS (Request Status) bit
6
for SPOLL
MSS (Master Summary
Status) bit for
Operation Status Register
7
Summary
Set to "1" when the output queue contains
data; reset to "0" when all of the data has been
Set to "1" when one of the enabled bits in the
status event status register is set to "1."
Set to "1" when any of the status byte register
bits enabled by the service request enable
register is set to "1"; reset to "0" when all of the
data has been retrieved through serial polling.
*STB?
Set to "1" when one of the enabled bits in the
operational status register is set to "1."
Description
Always 0
retrieved.
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