TB 9-5895-1913-40
Table 6. AM Rate Verification.
TI
Measuring receiver
Frequency
Modulation
AM depth
Min
Max
(MHz)
rate (kHz)
(%)
(kHz)
(kHz)
30
1
50
0.99990
1.00010
30
220
50
219.990
220.010
(6) Set the TI controls as listed in (a) through (g) below:
(a) FREQUENCY to 125 MHz.
(b) LEVEL to +14 dBm.
(c) MOD to AM.
(d) MOD RATE to 1 kHz (Sine).
(e) AM DEPTH to 80%.
(f) OUTPUT to OPER.
(g) MODULATION to ON.
(7) Set the measuring receiver for an AM Depth measurement.
(8) Verify that the measuring receiver AM Depth indication is within the limits of
(9) Repeat technique of (6) (a), (6) (d) and (8) above for the remaining modulation
Table 7. AM Depth Verification.
TI
Measuring receiver
AM
Frequency
Modulation rate
Min
Max
depth
(MHz)
(kHz)
(%)
(%)
(%)
125
1
80
77.5
82.5
125
100
80
77.5
82.5
1000
1
80
77.5
82.5
1000
100
80
77.5
82.5
(10) Set the TI controls as listed in (a) through (g) below:
(a) FREQUENCY to 125 MHz.
(b) LEVEL to +13 dBm.
(c) MOD to FM.
(d) MOD RATE to 1 kHz (Sine).
(e) FM DEVIATION to 300 kHz.
(f) OUTPUT to OPER.
(g) MODULATION to OFF.
(11) Allow the measuring receiver to tune to the input signal. When the tuning is
complete, set the TI to MODULATION ON.
(12) Configure the measuring receiver for an FM rate measurement. Verify that the
measuring receiver FM rate indications are within the limits of table 8.
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