TB 9-6625-2155-35
Audio
Audio analyzer indication
analyzer
Test description
frequency
Min
Max
(Hz)
(dB)
(dB)
50
Hz
response
50
-3
3
400
Hz
response
400
-3
3
500
Hz
response
500
-3
3
25
kHz
response
25000
-3
3
50
kHz
response
50000
-3
3
(14) Set audio analyzer as listed in (a) through (d) below.
(a)
PRGM 99 ENTER RCL.
600Ω output.
(b)
(c)
Source frequency 1 kHz.
(d)
Source level 0.7 V.
(16) Set audio analyzer to measure distortion.
(17) The audio analyzer will indicate within limits listed in table 17 for the current
audio analyzer source frequency and level.
(18) Set the audio analyzer to produced a 10 kHz signal at 0.425 V.
(19) Set measuring receiver to measure FM using + PEAK detector.
(20) The measuring receiver will indicate within limits listed in table 17 for the
current audio analyzer source frequency and level.
(21) Press measuring receiver INST PRESET.
measure 6.2 GHz using the offset frequencies listed in table 17.
(23) Set measuring receiver to measure FM using + PEAK detector. The measuring
receiver will indicate within limits listed in table 17 for the current frequency.
(24) Repeat (22) and (23) for remaining settings in table 17.
Table 17. Distortion, Incidentals, and Residuals
Test
Audio analyzer
instrument
Offset
/measuring
Audio analyzer
frequency
frequency
receiver
Test description
Frequency
Level
(GHz)
(MHz)
maximum
Pct. Dist @ 1kHz
1000
.7
3.9
-----
8
Inc. FM @ 3.9 GHz
10000
.425
3.9
4020.53
10000
Inc. FM @ 6.2 GHz
-----
-----
6.2
6320.530
10000
Inc FM @ 12.3 GHz
-----
-----
12.3
12420.530
10000
Inc. FM @ 18 GHz
-----
-----
18
18120.530
10000
Res FM @ 6.2 GHz
-----
-----
6.2
6320.530
10000
Res FM @ 12.3 GHz
-----
-----
12.3
12420.530
10000
Res FM @ 18 GHz
-----
-----
18
18120.530
10000
24