General Test Requirements - TM-11-6625-623-450039

C3, TM 11-6625-623-45

5-4. General Test Requirements

f. Connect the ME-26B/U between the red and

gray tip jacks of the DT-278/URC (red tipjack is

Depot overhauls standards consist of per-

common). The ME-26B/URC should indicate no

formance of the tests indicated in paragraphs

less than 1 volt dc.

4-4, 4-5, and 4-6 and the following tests. The

following tests consist of signal level measure-

5-8. Test of Extender, Module MX-4892/

ments and continuity checks. Paragraphs 4-4, 4-5,

URC (If Translator Module Extender)

and 4-6 cover tests of the TS-1956/URC (fig. 4-11),

(fig. 3-12, 3-13, 4-8 and 4-12)

the function test set.

a. Set the output frequency of the signal

5-5. Test of Voltage Divider TS-1954/

generator to 500 kc.

URC (2 to 8 mc capacity divider)

b. Connect the 6-db pad between the signal

(fig. 3-2 and 4-3)

generator and the ME-30A/U; use the CG-

2727/U to connect the 6-db pad to the ME-30A/U.

a. Set the output frequency of the AN/GRM-50

c. Adjust the signal generator for an output of

(signal generator) to 5 mc.

0.07 volt.

b. Connect the 6-db pad between the signal

d. Disconnect the ME-30A/U from the CG-

generator and the ME-30A/U.

2727/U and connect the CG-2727/U to the

c. Set the signal generator output for a 5 mc, .33

MX-4892/URC RF LOAD BNC connector.

volt output.

e. Connect the ME-30A/U between the MX-

d. Connect the input terminal of the TS-1954/

4892/URC blue tipjack and the frame.

URC to the output of the 6-db pad and connect the

f. Adjust the capacitor on the side of the

M E - 3 0 A / U to the output terminal of the

MX-4892/URC to an indication on the ME-

TS-1954/URC.

30A/U of a peak of 0.055 volt 0.005.

e. ME-30A/U should indicate 0.01 volt 10%

g. Disconnect the MX-4892/URC from test

(0.009 to 0.011 volt).

setup and test continuity of remaining circuits

5-6. Test of Voltage Divider TS-1955/

(fig. 4-12).

URC (8 to 30 mc capacity divider)

(fig. 3-3 and 4-4)

5-9. Test of Dummy Load, Electrical DA-

a. Set the output frequency of the signal

340/URC (Rf Translator Load)

generator for 19 mc.

(fig. 3-4 and 4-5)

b. Connect the 6-db pad between the signal

a. Connect a 6-db pad to the signal generator

generator and the AN/URM-145.

output .

c. Set the signal generator output for a 19 mc,

b. Connect the AN/URM-145 to the signal

.35 volt output.

generator output with the UG-274B/U connector.

d. Connect the input terminal of the TS-

c. Set the signal generator for a 2 MHz 3 volt

1955/URC to the output of the 6-db pad and

output.

connect the AN/URM-145 to the output terminal

d. Connect the UG-274B/U connector to the

of the TS-1955/URC.

DA-340/URC connector associated with the blue

e. AN/URM-145 should indicate 0.01 volts

tipjack using the 4 to 12 inch fabricated cable.

0.001.

e. Check that the AN/URM-145 indicates not

5-7. Test of Detector, Radio Frequency

less than 2.90 volts.

DT/278/URC (Neutralizing Detector)

f. Set the frequency of the signal generator to 30

(fig. 3-5 and 4-6)

mc and disconnect the DA-340/URC from the

a. Set the output frequency generator to 500 kc.

UG-274B/U.

b. Connect the 6-db pad between the signal

g. Set the signal generator output level to 3

generator and the ME-30A/U.

volts.

c. Set the signal generator for a 500 kc, 1 volt

h. Connect the DA-340/URC to the UG-274B/U

output.

as indicated in d above.

d. Disconnect the ME-30A/U.

i. The AN/URM-145 should not indicate less

e. Connect the DT-278/URC red lead to the

than 2.2 volts.

common terminal of the 6-db pad and the gray

j. Check that resistance between J1 and P1 and

lead to the positive terminal of the 6-db pad.

between J2 and P2 is less than one (1) ohm.

32.3