Keysight N1911A

1 Power Meter Remote Operation
82 N1911A/1912A P-Series Power Meters Programming Guide
The Status Byte Summary Register
The status byte summary register reports conditions from other status registers.
Query data waiting in the power meter’s output buffer is immediately reported
through the “message available” bit (bit 4). Clearing an event register clears the
corresponding bits in the status byte summary register. Reading all messages in
the output buffer, including any pending queries, clears the message available bit.
Table 1-5 Bit Definitions - Status Byte Register
Particular bits in the status byte register are cleared when:
– The standard event, Questionable status, operation status and device status
are queried.
– The error/event queue becomes empty.
– The output queue becomes empty.
Bit Number Decimal Weight Definition
0 1 Not Used (Always set to 0)
12
Device Status Register summary bit.
One or more bits are set in the Device Status Register (bits must be “enabled” in
enable register)
24Error/Event Queue
38
Questionable Status Register summary bit.
One or more bits are set in the Questionable Status Register (bits must be
“enabled” in enable register).
416
Data Available
Data is available in the power meter’s output buffer.
532
Standard Event
One or more bits are set in the Standard Event register (bits must be “enabled” in
enable register).
664
Request Service
The power meter is requesting service (serial poll).
7 128
Operation Status Register summary bit.
One or more bits are set in the Operation Status Register (bits must be “enabled” in
enable register).