User`s guide

Remarks
The 34410A/11A/L4411A self-test takes over five seconds to complete.
When sending the *TST? command from the Agilent Connection Expert
'Interactive IO' window or from the Web-based 'SCPI Command Interface'
window, it may be necessary to increase the timeout period to allow the
command to complete without error.
If one or more tests fail, "+1" is returned and an error is stored in the
error queue. For a complete listing of the error messages related to self-
test failures, see SCPI Error Messages.
If one or more tests fail, see the Agilent 34410A/11A/L4411A Service
Guide for instructions on obtaining service.
Following the *TST? command, the instrument issues a Factory Reset
(*RST command).