68
APPENDIX Error Messages
Error Messages
When the front-panel ERROR annunciator turns on, and the power supply generates a
short beep, one or more command syntax or hardware errors have been detected. A
record of up to 20 errors is stored in the power supply’s memory.
Errors are stored and retrieved in first-in-first-out (FIFO) order. The first error
returned is the first error that was stored. When you have read or cleared all errors
from the queue, the ERROR annunciator turns off automatically.
If more than 20 errors have occurred, the last error stored in the queue (the most
recent error) is replaced with -350, “Too many errors”. No additional errors are stored
until you read or remove errors from the queue. If no errors have occurred when you
read the error queue, the supply responds with + 0, “No error”.
The error queue is cleared after a *CLS (clear status) command has been executed.
The *RST (reset) command does not clear the error queue. All error records will be
lost when the power is turned off.
Front-Panel operation:
If the ERROR annunciator is on, press the “Error” key repeatedly to read the errors
stored in the queue in sequence. The error queue is cleared when you read all errors
and then the “ERROR” annunciator turns off.
Remote interface operation:
SYSTEM:ERROR? Read one error from the error queue
Execution Errors
Code Explanation
-101
Invalid character
An invalid character was found in the command string. You may have inserted a
character such as #, $, or % in the command keyword or within a parameter.
Example: OUTP:TRAC #ON
-102
Syntax error
Invalid syntax was found in the command string. You may have inserted a blank space
before or after a colon in the command header, or before a comma.
Example: VOLT:LEV ,1
-103
Invalid separator
An invalid separator was found in the command string. You may have replaced a
