Technical data

7 Error Messages
48 U2751A Programmer’s Reference Guide
Error Messages
Error messages are created once a command error or an erroneous
condition has been detected.
• Errors are retrieved in first-in, first-out (FIFO) order.
• Errors are cleared as you read them.
• If too many errors occur, the last error stored in the queue (the most
recent error) will be replaced with –350, "Queue overflow". No
additional errors will be stored until you remove the errors from the
queue. If no errors occur when you read the error queue, the
instrument will respond with 0, "No error".
• SYSTem:ERRor? will read and clear one error from the queue.
Error List
The table below contains the list of command errors.
Table 7-1 Command errors
Error Command errors (these errors set the Standard Event Status register bit #5)
–101 Invalid character
An invalid character was found in the command string. You may have inserted a character such as #, $, or
% in a command keyword or within a parameter.
–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.
–103 Invalid separator
An invalid separator was found in the command string. Check for proper usage of , ; :
–108 Parameter not allowed
More parameters were received than expected for the command. You may have entered an extra
parameter, or you have added a parameter to a command that does not accept a parameter.
–109 Missing parameter
Fewer parameters were received than expected for the command. You may have omitted one or more
parameters that are required for this command.