HP 8340B Manual page 190

8-2.
Phase Lock Diagnostic
Description
This program
is not
a test,
in that
it
does not
verify
conformance
to
a specification.
It is
a
diagnostic
that
tests the integrity
of the phase
lock loops internal to the
synthesizer. The diagnostic causes the
phase lock loop frequency to switch
rapidly from one
extreme
to the next, while the
synthesizer
is
polled for an unlock indication to determine if
phase lock has been
lost.
If
at
any
point during the
test
an unlock indication
is detected, the diagnostic indicates which phase lock loop was unlocked.
Test Equipment
None required.
Procedure
1.
Select
the
desired softkey:
[Thrash]
runs the diagnostic. Select
this key to
meet the requirements for the operation verifica¬
tion.
[JANITOR]
returns
to the
test menu.
Attenuator Calibration and Operation Verification Test
Software Tests/Utilities 8-3