Technical data

50 34980A Service Guide
3 Calibration Procedures
Performance Verification Tests
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 2 Specifications in this
manual.
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 tests.
• 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 and also checks the plug- in modules for basic operation.
• During the self- test all display segments and annunciators are lit.
• If the self- test fails, the ERROR annunciator turns on. Read any errors
using the front panel View menu, or 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.
• You can initiate a more complete self test by sending the
*TST?
command to the instrument. This command returns a “+0” if all the
self- tests pass, or a “+1” if a failure occurred. Depending upon the
number and type of modules installed, this command may take up to
2½ minutes to complete. You may need to set an appropriate interface
time- out value.