Agilent Technologies 75000 SERIES B, E1301B Error Messages, Reading an Instrument’s Error Queue

Appendix B

Error Messages

Using This Appendix This appendix shows how to read an instrument’s error queue, discusses the types of command language-related error messages, and provides a table of all of the System Instrument’s error messages and their probable causes.

• Reading an Instrument’s Error Queue . . . . . . . . . . . . . . . . . . . . B-1

• Error Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-2

• Start-up Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Reading an

Instrument’s Error

Queue

Executing the SYST:ERR? command reads the oldest error message from the instrument’s error queue and erases that error from the error queue. The SYST:ERR? command returns response data in the form:

< error number> ,"< error description string> ".

Example error message; -113,"Undefined header"

Positive error numbers are specific to an instrument. Negative error numbers are command language-related and discussed in the next section "Error Messages". Command language-related errors also set a corresponding bit in the Standard Event Status Register (refer to "Instrument Status" in Chapter 4 for more information).

Example: Reading the Error This program reads all errors (one error at a time, oldest to newest) from the Queue System Instrument’s error queue. After reading each error, that error is

automatically erased from the queue. When the error queue is empty, this program returns: + 0,"No error".

10 OPTION BASE 1
20	DIM Message$[256]	Create array for error message
30	REPEAT	Repeat next 3 lines until error
		number = 0
40	OUTPUT 70900;"SYST:ERR?"	Read error number & message
50	ENTER 70900;Code,Message$	Enter error number & message
60	PRINT Code,Message$	Print error number & message

70UNTIL Code= 0

80END

Error Messages B-1