Model
8901B
Operation
Modulation Measurements Contents
AM
AM
.................................................................................
3-135
0
How
to
measure AM depth.
0
How
to
optimize AM ALC response time vs. modulation
rate.
0
How
to
turn ALC off.
0
How to verify AM calibration.
0
How
to
use the rear-panel
AM
OUTPUT
to
obtain demodulated AM.
AM ALC Response Time
..............................................................
3-139
AM Calibration
.......................................................................
3-141
AM Output
.......................................................................... 3-147
FM
FM..
................................................................................
3-151
FM Calibration
.............
.-.
........................................................
3-155
FM De-Emphasis
.....................................................................
3-159
FM Output.
..........................................................................
3-163
Tone-Burst Receiver
..................................................................
3-165
0
How
to
measure FMAdeviation.
0
How to verify FM calibration.
0
How
to
equalize pre-emphasized FM signals.
0
How
to
use the rear-panel FM OUTPUT
to
obtain demodulated FM.
0
How
to
set up the instrument
to
output demodulated squelch-tone bursts.
QM
QM
.................................................................................
3-169
0
How
to
measure QM deviation.
AUDIO DETECTORS
Audio Detectors
......................................................................
3-173
Audio Detector Response
..............................................................
3-177
0
How to select the peak, average, and
rms
audio detectors.
0
How
to
trade
off
readability
of
noisy
signals
for
measurement time.
GENERAL MODULATION MEASUREMENT FUNCTIONS
Audio Filters
.........................................................................
3-179
0
How
to
select the high-pass and low-pass noise filters which filter the demodulated signal.
Audio Range
.........................................................................
3-183
0
How to vary the display resolution and MODULATION OUTPUT sensitivity.
Modulation Output/Audio Input
........................................................ 3- 187
0
How
to
use the MODULATION OUTPUT/AUDIO INPUT
to
obtain the demodulated,
0
How to use the MODULATION OUTPUT/AUDIO INPUT
to
input an external audio
Residual Noise Effects.
................................................................
3-191
audio signal.
signal
for
audio analysis.
0
How to account
for
noise
to
make the most accurate peak-modulation measurements.
Modulation Measurements Contents
3-133
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