HP 8340B Manual page 193

8-4.
ALC Accuracy Verification
Description
This
program
is
not a
test,
in
that it
does not verify conformance to
a specification.
It is
a
verification of
the operation of the
automatic leveling control
(ALC)
circuitry,
and
is used to alert you to any problems
in the ALC.
A
problem in
this circuitry directly
impacts the output power flatness and accuracy, which
is
specified.
Because the ALC
is not frequency dependent,
this test is
performed
at
two frequency points (one
in
band
0,
and one
in
band 1).
By checking the ALC
in these
two bands, operation
in
the synthesizer's low
frequency
RF path and high frequency RF path
is verified.
At each frequency, the ALC
is tested over
its
entire
power range (from —20 dBm
to maximum available leveled power).
Test Equipment
Power Meter
..........................................
HP 436A Option 022
Power Sensor
.................................................
HP
8485A
Adapters;
3.5 mm (f)
-
(f)i
...................................
HP Part No. 5061-5311
3.5 mm (f)
-
Type-N (m)
...........................
HP Part No. 1250-1744
1
Required for an HP 8340A/B
only
Procedure
1.
Select the desired softkey, and respond to any
program prompts:
[VERIFY]
runs
the ALC
verification.
Select this is
key to meet
the requirements of the operation
verification.
[SETUP] displays the ALC accuracy test setup.
[JANITOR]
returns to the test menu.
2.
When the test completes, choose from:
[Display] displays
the test results
[Print]
prints
a copy
[DONE]
returns to the above menu
8-6 Tests/Utilities
Attenuator Calibration and Operation Verification Test Software