800, Operation Complete Event; 700, Request Control Event; 600, User Request Event; 500, Power On Event - Keysight N8973B Service Manual

Instrument Messages
Event Messages

–800, Operation Complete Event

Err# Message
–800
Operation complete

–700, Request Control Event

Err# Message
–700
Request control

–600, User Request Event

Err# Message
–600
User request

–500, Power on Event

Err# Message
–500
Power on
–400 to –499, Query Errors
Err# Message
–400
Query Error
–410
Query INTERRUPTED
–420
Query UNTERMINATED
–430
Query DEADLOCKED
–440
Query UNTERMINATED
after indefinite
response
Keysight NFA Series Noise Figure Analyzers Service Guide
Verbose/Correction Information
The instrument has completed all selected pending operations in accordance
with the IEEE 488.2, 12.5.2 synchronization protocol
Verbose/Correction Information
The instrument requested to become the active IEEE 4881
controller-in-charge
Verbose/Correction Information
The instrument has detected the activation of a user request local control
Verbose/Correction Information
The instrument has detected an off to on transition in its power supply
Verbose/Correction Information
There was a problem with a query command. The exact problem cannot be
specifically identified
Some condition caused an INTERRUPTED query to occur. For example, a query
was followed by DAB or GET before a response was completely sent
Some condition caused an UNTERMINATED query to occur. For example, the
device was addressed to talk and an incomplete program message was
received
Some condition caused a DEADLOCKED query to occur. For example, both the
input buffer and the output buffer are full and the analyzer cannot continue. The
analyzer automatically discards output to correct the deadlock
A query was received in the same program message after a query requesting an
indefinite response was executed
81