Capacitor Selection Table

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