HP 8901B Operation And Calibration Manual page 355

Model
8901B
Performance
Tests
Equipment
A M F M Test Source
.............................................................
HP 11715A
Audio Analyzer
...................................................................
HP 8903B
Audio Synthesizer.
................................................................
HP 3336C
HP 89010
MODULATION
ANALYZER
0
OUTPUT
h
UODULATION
OUTPUT/
AUDIO INPUT
o o ~ o o
( S t e p 1 2 )
INPUT
- & -
t:::;
0 0 0 0 0 0
O
0000 0
o n
0
0000
0
0
0 0
000000 0
0000
0
AUDIO ANALYZER
I
I I
I
_ _
0
o o o o o (
AUDIO SYNTHESIZER
Figure
4-3. @M Performance Test Setup
NOTE
In the following procedure the
RF
modulation source can be connected
either to a sensor module (which
is
connected to the Modulation Analyzer)
or directly to the Modulation Analyzer's INPUT connector. The procedure
is
written for the latter case.
Procedure
@M
Accuracy
1. Perform
Performance Test 2 FM.
2. On the AMFM
test
source, set the test mode to FM. Connect its FM output to the Modulation
Analyzer's INPUT. (See Figure 4-3.)
3. Set the audio synthesizer to 200 Hz at -10 dBm. Connect its output to the audio input of the
A M F M test source. (See Figure 4-3.)
4. On the Modulation Analyzer, press the blue key then press INSTR PRESET (the AUTOMATIC
OPERATION key)
to
preset the instrument. Press FREQ and TRACK MODE. h e the AM/FM
test
source's carrier frequency to approximately 400 MHz. Press TRACK MODE again to turn
it off.
5. On the Modulation Analyzer, set the controls
as follows:
Measurement
.................................................................
FM
LP
Filter
................................................................
>20
kHz
Detector.
....................................................................
AVG
rev.1 OFEB88
Performance Test 3 4-15