Agilent Technologies E3633A User Manual page 130

Chapter 5 Error Messages
Execution Errors
A command was received which generates too much data to fit in the output buffer
and the input buffer is also full. Command execution continues but all data is lost.
-440 Query UNTERMINATED after indefinite response
The *IDN? command must be the last query command within a command string.
Example: *IDN?;:SYST:VERS?
501 Isolator UART framing error
502 Isolator UART overrun error
511 RS-232 framing error
512 RS-232 overrun error
513 RS-232 parity error
514 Command allowed only with RS-232
There are three commands which are only allowed with the RS-232 interface:
SYSTem:LOCal, SYSTem:REMote, and SYSTem:RWLock.
521 Input buffer overflow
522 Output buffer overflow
550 Command not allowed in local
You should always execute the SYSTem:REMote command before sending other
commands over the RS-232 interface.
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