Agilent Technologies E1441A user service System-RelatedOperations

System-Related Operations

This section gives information on topics such as error conditions and self-test. This information is not directly related to waveform generation but is an important part of operating the function generator. Topics covered on system-related operations are:

•Error Conditions

•Self-Test

•Memory State

•Firmware Revision Query

•SCPI Language Version Query

Error Conditions When the faceplate Errors LED turns on, one or more command syntax or hardware errors have been detected. A record of up to 20 errors can be stored in the function generator's error queue. See Appendix B, “Error Messages,” for a complete listing of the errors.

Errors are retrieved in first-in-first-out (FIFO) order. The first error returned is the first error that was stored. When you have read all errors from the queue, the Errors LED turns off.

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 remove errors from the queue. If no errors have occurred when you read the error queue, the function generator responds with +0, “No error”.

The error queue is cleared when power has been off or after a *CLS (clear status) command has been executed. The *RST (reset) command does not clear the error queue.

Use the following command to check for system errors:

SYSTem:ERRor?	Reads one error from the error
	queue

Errors have the following format (the error string may contain up to 80 characters):

-113,"Undefined header"

Self-TestA power-onself-test occurs automatically when you turn on the function generator. This limited test assures you that the function generator is operational.

A complete self-test runs a series of tests and takes approximately

10 seconds to execute. If all tests pass, you can have a high confidence that the function generator is fully operational.

If the self-test fails, the Errors LED turns on the function generator should be returned to Agilent Technologies for service.

Chapter 2 Agilent E1441A Application Information 55