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Error Messages 5
ESG Family Signal Generators -499 to -400: Query Errors
-499 to -400: Query Errors
The instrument’s output queue control has detected a problem with the message exchange
protocol described in IEEE 4888.2, Chapter 6. Errors in this class set the query error bit
(bit 2) in the event status register (IEEE 488.2, section 11.5.1). These errors correspond to
message exchange protocol errors described in IEEE 488.2, 6.5.
In this case, either an attempt is being made to read data from the output queue when no
output is either present or pending, or data in the output queue has been lost.
-440 Query UNTERMINATED after indefinite response
A query was received in the same program message in which a query
requesting an indefinite response was executed (see IEEE 488.2, 6.3.7.5).
-430 Query DEADLOCKED
A condition causing a DEADLOCKED query error occurred (see
IEEE 488.2, 6.3.1.7). For example, both the input buffer and the output
buffer are full and the device cannot continue.
Query DEADLOCKED
A SCPI output queue has filled, preventing further SCPI command
execution, and there is no more room left in the corresponding SCPI input
queue to accept a query to read from the output queue. The system
automatically discards output to correct the deadlock.
-420 Query UNTERMINATED
A condition causing an UNTERMINATED query error occurred (see
IEEE 488.2, 6.3.2.2). For example, the device was addressed to talk and an
incomplete program message was received.
-410 Query INTERRUPTED
A condition causing an INTERRUPTED query error occurred (see
IEEE 488.2, 6.3.2.7). For example, a query was followed by DAB or GET
before a response was completely sent.
-400 Query Error
This is a generic query error for devices that cannot detect more specific
errors. The code indicates only that a query error as defined in IEE 488.2,
11.5.1.1.7 and 6.3 has occurred.