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5
Error Messages
• Errors are retrieved in first-in-first-out (FIFO) order. The first error 
returned is the first error that was stored. Errors are cleared as you 
read them. The function generator beeps once each time an error 
is generated (unless you have disabled the beeper).
• If more than 20 errors have occurred, the last error stored in the 
queue (the most recent error) is replaced with “Queue overflow”. 
No additional errors are stored until you remove errors from the 
queue. If no errors have occurred when you read the error queue, 
the function generator responds with “No error”. 
• The error queue is cleared by the *CLS (clear status) command or 
when the power is cycled. The errors are also cleared when you read 
the error queue. The error queue 
is not
 cleared by an instrument reset
 
(*RST command). 
• Front-Panel Operation: Press and then select the topic entitled 
“View the remote command error queue” (topic number 2). Then press 
the SELECT softkey to view the errors in the error queue. As shown 
below, the first error in the list (i.e., the error at the top of the list) is 
the first error that was generated. 
• Remote Interface Operation: 
SYSTem:ERRor? Reads one error from the error queue 
Errors have the following format (the error string may contain up to 
255 characters). 
-113,"Undefined header" 
Note: Some error numbers can have several causes. The descriptive 
string begins with a fixed portion that is common to all errors with the 
same number. In many cases, additional, situation-dependent 
information appears after a semicolon (“;”). For example, there are several 
causes for error -221. Here is an example:
-221,"Settings conflict; burst count reduced" 
33210A users guide.book  Page 272  Wednesday, July 16, 2008  11:16 AM