BNC 1201 - 6 1/2 Digit Digital Multimeter - Manual (Page 129)

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-222 Data out of range
A numeric parameter value is out of range.
-223 Too much data
A character string was too long.
-224 Illegal parameter value
A discrete parameter was received which was not a valid choice for the
command.
-230 Data Stale
A FETCh? Command was received but the memory was empty.
-350 Too many errors
The error queue is full.
-410 Query INTERRUPTED
A command was received which sends data to the output buffer, but the
output buffer contained data from a previous command.
-420 Query UNTERMINATED
The multimeter was addressed to talk (i.e., to send data over the
interface) but a command has not been received which send data to the
output buffer.
-430 Query DEADLOCKED
A command was received which generates too much data to fit in the
output buffer and 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.
521 Input buffer overflow
522 Output buffer overflow