Error Messages
Introduction
4-2 Agilent E4419B User’s Guide
Introduction
This chapter contains information about the power meter’s error 
messages. It explains how to read the power meter’s error queue and lists 
all of the power meter’s error messages and their probable causes.
When there is a hardware related problem, for example, a power sensor 
overload, the error message is displayed on the status line at the top of the 
display. In addition, the errors are also written to the error queue. If there 
are any errors in the error queue the front panel error annunciator is 
displayed as shown in Figure 4-1.
Other errors can also be generated when the power meter is being 
operated over the remote interface. These errors also display the error 
annunciator and are written to the error queue.
Figure 4-1:  Error Annunciator Position
To read the error queue from the front panel press:
• ,  ,   then use   to scroll through 
each error message.
To read the error queue from the remote interface use:
• the SYSTem:ERRor? command.
Error queue messages have the following format:
For example, -330, “Self-test Failed;Battery Fault”.
Error annunciator
System
Inputs
More
Error List Next
Error
,
“
”;
Device
Error
Description
Dependent InfoNumber
HP4402.book  Page 2  Thursday, November 30, 2000  1:39 PM