C
Error Messages
Error Number List
This appendix gives the error numbers and descriptions that are returned by the dc source. Error
numbers are returned in two ways:
Error numbers are displayed on the front panel
Error numbers and messages are read back with the SYSTem:ERRor? query. SYSTem:ERRor?
returns the error number into a variable and returns two parameters: an NR1 and a string.
The following table lists the errors that are associated with SCPI syntax errors and interface problems. It
also lists the device dependent errors. Information inside the brackets is not part of the standard error
message, but is included for clarification.
When errors occur, the Standard Event Status register records them as follows:
-300 thru -399 or
1 thru 32767
Table C-1. Error Numbers
Error String [Description/Explanation/Examples]
Syntax error [unrecognized command or data type]
Data type error [e.g., "numeric or string expected, got block data"]
Parameter not allowed [too many parameters]
Missing parameter [too few parameters]
Program mnemonic too long [maximum 12 characters]
Undefined header [operation not allowed for this device]
Invalid character in number [includes "9" in octal data, etc.]
Numeric overflow [exponent too large; exponent magnitude >32 k]
Too many digits [number too long; more than 255 digits received]
Invalid suffix [unrecognized units, or units not appropriate]