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TM 11-5820-509-35
resistors R30 and R45 from the
(10) A clear, stable 5:1 Lissajous pattern must
tables below.
be displayed on the oscilloscope. If not, perform the
locked oscillator and 100-kHz amplifier adjustments in
(1) On the test fixture, place the +20V ON-
step f before continuing.
OFF switch to OFF, and remove the O-1032/PRC-47
from the test fixture.
(11) Connect the rf probe of the multimeter to
test jack J1 on the module and record the 100 kHz
(2) Disconnect the miniature coaxial cable
output voltage.  The multimeter shall read 1.5 0.4
from the junction of Q4-R23-R24 as in step d (2) unless
volts rms. If not, perform the locked oscillator and 100-
it has already been removed, and then replace the
kHz amplifier adjustments in step f before continuing.
module in the test fixture.
(12) Repeat step (7) and observe that the 5:1
(3) Connect the test equipment to the test
Lissajous pattern remains stable and clear through the
fixture as shown in figure 6-15 and connect the open
frequency excursion.
end of capacitor C1 to the terminal in the module from
which the coaxial cable was just removed.
(13) Disconnect the test equipment from the
module; place the +20V ON-OFF switch on the test
(4) Return the +20V ON-OFF switch on the
fixture to OFF, and reconnect the center conductor of
test fixture to ON; then set the signal generator output
the miniature coaxial cable removed in step (2) above.
frequency to 3.0 MHz. Adjust the output level of the
signal generator at the base of the locked oscillator (Q4)
e. Locked Oscillator Q4 and 500-kHz Amplifier
to the value measured in step c (3).
Adjustments.
NOTE
Maintain this output level through
NOTE
the remainder of this adjustment
Perform these procedures only if the
procedure.
stability or output level of the 500
(5) A clear, stable 6:1 Lissajous pattern must
kHz amplifier circuits is deficient.
be observed as the signal generator is varied from 2.90
The locked oscillator and amplifier
through 3.10 MHz. Select a value of capacitance for
adjustments  are  performed  by
C14 from the following table that provides this pattern
selecting
specific
values
for
(refer to fig. 3-53 and 7-13 for part locations).
capacitors  C14,  C20,  C25  and
Capacitor Selection Table
Value
Part No.
Value
Part No.
5 0.5 pf
DM 15C050D01
120 6.0 pf
CMO5E121J03
10 0.5 pf
DM 15C100J01
130 6.5 pf
CM05E131J03
12 0.6 pf
DM 15C120J01
140 1.4 pf
DM15E141F0500WV4CR
15 0.7pf
DM 15C150J01
150 7.5 pf
CM05F151J03
18 0.9 pf
DM 15C180J01
160 8.0 pf
CM05F161J03
20 1.0 pf
CM05E200J03
169 1.7 pf
DM15E1690F0300WV4CR
22 1.1 pf
CM05E220J03
180 9.0 pf
CM05F181J03
24 1.2 pf
CM05E240J03
190 1.9 pf
DM15E191F0500WV4CR
27 1.3 pf
CM05E270J03
200 10.0 pf
CM05F201J03
30 1.5 pf
CM05E300J03
220 11.0 pf
CM05F221J03
33 1.6 pf
CM05E330J03
240 12.0 pf
CM05F241J03
36 1.8 pf
CM05E360J03
270 13.5 pf
CM05F271J03
39 1.9 pf
CM05E390J03
300 15.0 pf
CM05F301J03
43 2.1 pf
CM05E430J03
330 16.5 pf
CM05F331J03
47 2.3 pf
CM05E470J03
360 18.0 pf
CM05F361J03
51 2.5 pf
CM05E510J03
390 19.5 pf
CM05F391J03
56 2.8 pf
CM05E560J03
430 21.5 pf
DM15F43 lJ03
62 3.1 pf
CM05E620J03
470 23.5 pf
DM15F471J03
68 3.4 pf
CM05E680J03
510 25.5 pf
DM15F511J03
75 3.7 pf
CM05E750J03
560 28.0 pf
DM15F561J300WV4CR
82 4.1 pf
CM05E820J03
620 31.0 pf
DM15F621J300WV4CR
91 4.5 pf
CM05E910J03
750 37.5 pf
CM05F751J03
100 5,0 pf
CM05E101J03
820 41.0 pf
DM15F821J0300WV4CR
110 5.5 pf
CM05E111J03
6-29


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