TB 9-6625-2322-35
Table 13. FM Meter
Audio analyzer/measuring receiver
indication
Min
Max
Test description
Distortion @ 240 kHz dev
0
1
240 kHz FM unlocked
228 kHz
252 kHz
Incidental AM @ 5 GHz
0
2
(18) Disconnect equipment setup and reconnect equipment as shown in figure 4.
(19) Press TI keys as listed in (a) through (j) below.
(a) SYSTEM, Rest.
(b) OUTPUT off.
(c) Level Control, L0, Edit L0, 0, and dB.
(d) Frequency Control, F0, Edit F0, 5, and GHz.
(e) OUTPUT on.
(f) Modulation, FM, More, UnLocked Wide, Previous Menu.
(g) Mod Wave, arrow key to highlight Squarewave, Select, Previous Menu.
(h) Edit Dev, 1, 0, 0, MHz, Edit Dev.
(i) Edit Rate, 0, ., 4, Hz, Edit Rate.
(j)
On/Off to on.
(20) Set spectrum analyzer Cent Freq to 5, GHz.
(21) Set the spectrum analyzer Span to 5 MHz and adjust the center frequency
control to position the low carrier at the center of the display. Record the
frequency reading.
(22) Adjust the center frequency counter to position the high carrier at the center of
the display. Record the frequency reading.
(23) Verify that the difference between the value recorded in (21) above and (22)
above is within the limits listed in table 14.
Spectrum analyzer indication
Min
Max
Test description
200 MHz Pk to Pk dev
190.000 M
210.000 M
(24) Reduce outputs to minimum.
(25) Disconnect equipment setup.
20
