Agilent 33120A User's Guide

Chapter 4 Remote Interface ReferenceSystem-Related CommandsDISPlay:TEXT?Query the message sent to the front panel and return a quoted string.For example, the query returns a string such as "HELLO".DISPlay:TEXT:CLEarClear the message displayed on the front panel.SYSTem:BEEPerIssue a single beep immediately.SYSTem:ERRor?Read one error from the error queue. When the front-panel ERRORannunciator turns on, one or more command syntax or hardware errorshave been detected. A record of up to 20 errors can be stored in thefunction generator’s error queue. See chapter 5, “Error Messages,” for acomplete listing of the errors.œ Errors are retrieved in first-in-first-out (FIFO) order. The first errorreturned is the first error that was stored. When you have read allerrors from the queue, the ERROR annunciator turns off. The functiongenerator beeps once each time an error is generated.œ If more than 20 errors have occurred, the last error stored in thequeue (the most recent error) is replaced with -350, “Too many errors”.No additional errors are stored until you remove errors from thequeue. If no errors have occurred when you read the error queue,the function generator responds with +0, “No error”.œ 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.œ Errors have the following format (the error string may containup to 80 characters):4-113,"Undefined header"189