Aeroflex 3412 - Analog Modulation Tests; Frequency Modulation Test

OPERATIONAL VERIFICATION TESTING
6-10
Analog modulation tests
Frequency modulation test
C5485
UUT
Modulation
meter
RF
OUTPUT
RF
INPUT
SIG
GEN
IQ
MOD
ANALOG
MOD
RECALL
SAVE
UTIL
<TAB>
...
SWEEP
GHz
MHz
kHz
Hz
rad
s
ms
%
V
mV
mV
dB
KNOB/
STEP
ERROR
STATUS
SOURCE
ON/OFF
RF OUTPUT
50W
MOD
ON/OFF
RF
ON/OFF
x10
7
8
9
6
5
4
1
0
.
2
3
10
¸
EXT I
EXT AM
EXT Q
EXT FM
LOCAL
ENTER
50 /
100k
W
W
50 /
100k
W
W
REVERSEPOWER
50WMAX
Fig. 6-3 Analog modulation test setup
1 Connect the test equipment as shown in Fig. 6-3.
2 On the UUT set:
Freq
...
375 [MHz]
Lev
...
0 [dB]
ANALOG
MOD
<FM>
Int
FM1
1
SIG
GEN
FM1
...
100 [kHz]
RF
ON/OFF
3 On the modulation meter select the FM, 50 Hz–15 kHz filter, Pk-Pk/2.
4 Record the deviation measured by the modulation meter against each of the carrier
frequencies and deviations shown in Table 6-4, checking that the results are within the
indicated limits.