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Wait until one complete sweep has completed, then
press Enter to store the calibration.
NOTE
It is likely that the trace will be off screen at
the bottom of the display. If so, press Autos
-
cale to obtain a discernable trace. If this
trace shows vertical instability, then do the
following:
1. Press Video IF BW and select REDUCED
(100 Hz) from the menu.
2. Press Avg/Smooth Menu and select AVER
-
AGING 100 MEAS. PER POINT from the
menu.
3. Press Average to turn averaging on.
Step 7. Press Appl to return to the gain compression menu
set, and follow the prompts to return to Menu GC3.
Repeat Step 6.
Step 8.
Move the cursor to S21 OPTIONS (top left), select
NORMALIZE S21 in the next menu (not shown),
then NORMALIZE S21 again (bottom left); then
press Enter and follow the menu instructions:
Remove the through line and connect the ampli
-
fier-under-test (AUT) between Port 1 and Port 2.
Apply bias to the AUT.
Wait until one complete sweep has completed, then
press Enter to store the normalization measurement.
Step 9. Move the cursor to the desired test and press Enter.
The steps that follow presume that gain compression
has been selected.
GAIN COMPRESSION MEASUREMENTS
8-46 37xxxE OM
MENU GC_NORM
NORMALIZE S21
CONNECT AUT
AND APPLY BIAS .
WAIT FOR ONE
COMPLETE SWEEP
BEFORE STORING
PRESS <ENTER>
TO STORE
PRESS <CLEAR>
TO ABORT
MENU GC3
SWEPT POWER
GAIN COMPRESSION
CALIBRATE
FOR LINEARITY
([NO] CAL EXIST)
LINEARITY ON [OFF]
CORRECTION
CALIBRATE
RECEIVER
([NO] CAL EXISTS)
S21 OPTIONS
([NOT] STORED)
AUT TEST TYPES
GAIN COMPRESSION
AM/PM
MULTIPLE FREQ
GAIN COMPRESSION
RETURN TO SWEPT
FREQUENCY MODE
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