TB 9-6625-2363-35
Measuring receiver indication limits
Test instrument
(kHz )
Frequency
FM Rate
FM Dev
(MHz)
(kHz)
(kHz)
Min
Max
2500
1
300
289.48
310.52
1500
1
100
96.48
103.52
500
1
50
48.23
51.77
250
1
25
24.105
25.895
100
1
50
48.23
51.77
(6) Reduce all outputs to minimum.
b. Adjustments. No adjustments can be made.
a. Performance Check
(1) Press TI pushbuttons as listed in (a) through (g) below:
(a)
Preset.
(b)
(c)
Amplitude, 1, 0, [dBm].
FM/ΦM, [FM/ΦM], (highlight [ΦM]), [ΦM Rate], 1, [kHz].
(d)
[ΦM Dev], 9, 0, [rad].
(e)
[ΦM Off On] to on.
(f)
(g)
RF On/Off to RF on.
(2) Set measuring receiver to measure PM with a + PEAK detector, 15 kHz low-pass
filter and a 300 Hz high-pass filter.
(3) Using measuring receiver, measure phase modulation. Measuring receiver
phase modulation indication will be within limits specified in first row of table 14.
(4) Repeat technique of (1) (b) and (e) above using the TI frequency and ΦM dev
settings and measuring receiver indications listed in table 14. Measuring receiver will
indicate within limits specified in table 14.
Measuring receiver phase
Test instrument
Test instrument
Frequency
modulation indications (rad)
ΦM Dev
Min
Max
10
MHz
90 rad
85.49
94.51
500
MHz
45 rad
42.74
47.26
1
GHz
90 rad
85.49
94.51
2
GHz
180 rad
170.99
189.01
4
GHz
360 rad
341.99
378.01
(5) Press TI pushbuttons as listed in (a) through (g) below:
(a) Preset.