Advertisement
Model 8902A
Performance Tests
0
0
: : : : . "
0 0 0 0 0 0
0000 0
0
0
:
8 : :
:
0
0
0 0
000000 0
0000
0
HP 8902A
MEASURINQ RECEIVER
I
1
AUD
IO
0
INPUT
AUDIO SYNTHESIZER
0
INPUT
FYS4
OUTPUT
OUTPUT
o
0 0 0 0 0
HP 11715A
AM/FM TEST SOURCE
I
I
t
i
1. Connect the equipment as shown in Figure
4-4.
2. On the AM/FM test source, set the test mode to FM.
3. Set the audio synthesizer to 200
Hz
at
+6
dBm.
1. On
the Measuring Receiver, press the blue key then press INSTR PRESET (the AUTOMATIC
OPERATION key) to preset the instrument. Press FREQ and TRACK
MODE.
T u n e the
AM/FM test source's carrier frequency to approximately 100 MHz. Press TRACK M O D E
again t o turn it off.
5. On the Measuring Receiver, press MHz
to center the instrument's tuning. Set the other controls
as follows:
MEASUREMENT
................................................................
F M
DETECTOR
....................................................................
AVG
6. Set the audio synthesizer level
to
give a display of approximately 25 kHz average deviation.
7. Set the audio synthesizer frequency t o the frequencies shown in the following table. For each
setting, set RATIO o n the Measuring Receiver t o
off,
set all H P o r LP FILTERS to
OK
then set
RATIO t o on (with LOG/LIN set for a linear display), and insert the filter indicated. For each
setting, the Measuring Receiver's display should read between the limits indicated in the table.
Audio
Synthesizer
Frequency (Hz)
200
2
000
1
000
10
000
1
000
100
10
000
1
000
10
000
1
000
Ratio Limits (% REL)
Lower
Actual
Upper
Filter
50 Hz HP FILTER
50 Hz HP FILTER
300 Hz HP FILTER
300 Hz HP FILTER
3 kHz LP FILTER
3 kHz LP FILTER
15 kHz LP FILTER
15 kHz LP FILTER
>20 kHz LP FILTER
>20
kHz LP FILTER
98.99
98.99
98.99
98.99
98.99
98.99
98.99
98.99
98.99
98.99
101.01
101.01
101.01
101.01
101.01
101.01
101.01
101.01
101.01
101.01
4-19
Advertisement
Chapters
