Mechanical Alignment.

TM 11-5820-509-35

(5) Measure the output voltage at connector

Place the teat fixture POWER ON-OFF switch to OFF

and install the module in the test fixture.

J3-1 and set potentiometer R6 of the test set to obtain-

35 1.0 volts dc.

(8) Return the test fixture POWER ON-OFF

switch to ON and permit the module and the test

(6) Place the AVC ON-OFF switch of the test

fixture to ON and measure the output voltage at

equipment to stabilize for at least 5 minutes before

performing the remaining procedures.

connector J3-4. Set potentiometer R8 on the test fixture

to obtain-2.2 volts dc.

NOTE

(7) After

performing

the

mechanical

the

mechanical

alignment

alignment procedures of step c, replace the bottom

procedure was performed in (7)

cover on the CV-1377A/PRC-47, attach the indexing

above, proceed directly to step d and

fixture to the drive coupling end of the module with the

perform the remaining procedures in

three knurled thumbscrews.

the order listed.

Figure 6-13. Signal Data Translator CV-1377A/PRC - 47 (A8A3), Performance Tests, Initial Test Equipment

Connections.

from the bottom of the coil form (second ring on plug

c. Mechanical Alignment.

This procedure is

gage (fig. 6-1)).

performed with the module disconnected from the test

fixture. The bottom cover must be loosened and

(3) Set the slug of coil L4 to a depth of

removed to provide access to the inductor slugs. Refer

5/32inch from the bottom of the coil form (first ring on

to figures 3-41, 3-96 through 3-98, and 3-105 for the

plug gage), and set L5 slug to a depth of 1/4-inch from

location of adjustments referred to in these procedures.

the bottom of the coil form (third ring on the plug gage).

Set the slug of coil L145 to a depth of 9/32 inch (fourth

(1) Using multimeter ME-26A/U, check the

ring on the plug gage).

internal resistance between connector P3-3 and ground,

and between P3-4 and ground; each reading shall be

(4) Remove the 0.041" overtravel tool from

100 ohms 10 %

the slug rack, install the bottom cover of the module,

and install the module in the test fixture.

(2) Attach the 0.041" overtravel tool to the

slug rack. With the control on the indexing fixture set

NOTE

for 000 (slugs fully inserted in their respective coils),

Return to paragraph 6-12 b (7) and

adjust L1, L2, and L3 (fig. 3-96) to a depth of 7/32-inch

6-19