24 Chapter 1
Calibrating
Before You Start

Before You Start

This brief procedure should be performed before starting the
performance verification tests:
1. Switch the analyzer on and let it warm up for five minutes.
2. If the analyzer is an Agilent E4402B, E4403B, E4404B, E4405B,
E4407B, or E4408B, connect a cable from AMPTD REF OUT to the
50 Input.
3. Press System, Alignments, Align Now, All, and wait for the auto
alignments to finish.
4. Read the remainder of this section before you start any of the tests,
and make a copy of the Performance Verification Test Record
described below in "Recording the test results."

Recording the test results

Performance verification test records, for each analyzer, are provided in
the chapter following the tests.
Each test result is identified as a TR Entry in the performance tests
and on the performance verification test record. We recommend that
you make a copy of the performance verification test record, record the
test results on the copy, and keep the copy for your calibration test
record. This record could prove valuable in tracking gradual changes in
test results over long periods of time.

Performing Self-Alignment

Perform a complete self-alignment at least once per day, or if the
analyzer fails a verification test. To perform a self-alignment, press
System, Alignment, Align Now, All. The instrument must be up to
operating temperature in order for this test to be valid. If the analyzer
continuously fails one or more specifications, complete any remaining
tests and record all test results on a copy of the test record. Then refer
to Chapter 4 , “If You Have a Problem,” for instructions on how to solve
the problem.