Agilent Technologies E3646A, User Manual, Page: 131 / 211

Chapter 5 Error Messages
Execution Errors
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5
-420 Query UNTERMINATED
The power supply was addressed to talk (i.e., to send data over the interface) but a
command has not been received which sends data to the output buffer. For example,
you may have executed an
APPLy
command (which does not generate data) and then
attempted an
ENTER
statement to read data from the remote interface.
-430 Query DEADLOCKED
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.