84 34410A/11A User’s Guide
2 Features and Functions
Error Conditions
When the front panel ERROR annunciator 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 instrument’s error queue.
•
The instrument beeps once each time a command syntax or 
hardware 
error is generated.
• Each remote interface I/O session (e.g., GPIB, USB, LAN) has its own 
interface–specific error queue.
•
A special global  error queue holds all power–on and hardware– 
related 
errors (e.g., over–temperature).
•
Errors are retrieved in first–in–first–out (FIFO) order. The first 
error 
returned is the first error that was stored. Errors are cleared as 
you read them. Once you have read all of the interface–specific errors, 
the errors in the global queue are retrieved.
•
Errors are cleared as you read them. When you have read all 
errors 
from the interface–specific and global error queues, the ERROR 
annunciator turns off and the errors are cleared.
•
If more than 20 errors have occurred, the last error stored in the 
queue 
(the most recent error) is replaced with 
–350,“Error queue overflow”. 
No additional errors are stored until you remove errors from the queue. 
If no errors have occurred when you read the error queue, the 
instrument responds with 
+0,“No error”.
•
The front panel reports errors from all I/O sessions as well as 
the 
global error queue.
• Both the interface–specific and global error queues are cleared by the 
*CLS (Clear Status) command and when power is cycled. The errors 
are also cleared when you read the error queue. The error queue is not 
cleared by a Factory Reset (*RST) command or an Instrument Preset 
(SYSTem:PRESet) command.
Calibration
NOTE
Only service–qualified personnel should calibrate the multimeter. Improper 
use of the front–panel CALIBRATION procedure in the UTILITY menu could 
result in damage to the multimeter.
Refer to the Agilent 34410A/34411A Service Guide for calibration 
procedures.