Performance Tests and Calibration 4
34405A User’s and Service Guide 73
Performance Verification Tests Overview
Use the Performance Verification Tests to verify the 
measurement performance of the instrument. The 
performance verification tests use the instrument's 
specifications listed in Chapter 6, “Specifications”.
You can perform four different levels of performance 
verification tests:
Self- Test A series of internal verification tests that give a 
high confidence that the instrument is operational.
Quick Verification A combination of the internal self- tests 
and selected verification test.
Performance Verification Tests An extensive set of tests 
that are recommended as an acceptance test when you first 
receive the instrument or after performing adjustments.
Optional Verification Tests Tests not performed with every 
calibration. Perform these tests to verify additional 
specifications or functions of the instrument.
Self -Test
• A brief power- on self- test occurs automatically whenever 
you turn on the instrument. This limited test assures that 
the instrument is capable of operation.
• During the self- test all display segments and annunciators 
are lit.
• If the self- test fails, an error is reported on the front 
panel. You can also use the SYSTem: ERRor? command 
query from the remote interface. If repair is required, 
contact an Agilent Service Center.
• If all tests pass, you have a high confidence (~90%) that 
the instrument is operational.
34405A users guide.book  Page 73  Saturday, September 2, 2006  3:38 PM