Specifications

put of the TS-421/U until the RED indicator
lights.
e. Turn the selector switch to 6,
f. Carefully increase the output from the TS-
421/U and note the voltage indicated on the ME-
30A/U when the RED indicator goes out and the
GREEN indicator lights. This action must occur
between 0.450 and 0.520 volt. Decrease the out-
put of the TS421/U until the RED indicator
lights.
g. Turn the selector switch to 6.
h. Carefully increase the output from the TS-
421/U and note the voltage indicated on the ME-
30A/U when the RED indicator goes out and the
GREEN indicator lights. This action must occur
between 0.800 and 1.000 volt. Decrease the out-
put of the TS-421/U until the RED indicator
lights.
i. rum the selector switch to 3.
j. Carefully increase the output from the TS-
421/U and note the voltage indicated on the ME-
30A/U when the RED indicator goes out and the
GREEN indicator lights. This action must occur
between 2.60 and 3.80 volts. Decrease the out-
put of the TS-421/U until the RED indicator
lights.
k. Turn the selector switch to 11.
l. Carefully increase the output from the TS-
421/U and note the voltage indicated on the ME-
80A/U when the RED indicator goes out and the
GREEN indicator lights. This action must occur
between 6.00 and 7.80 volts. Decrease the output
of the TS-42l/U until the RED indicator lights.
m. Turn the selector switch to 4.
n. Carefully increase the output from the TS-
421/U and note the voltage indicated on the ME-
30A/U when the RED indicator goes out and the
GREEN indicator lights. This action must occur
between 12.50 and 14.90 volts. Decrease the out-
put of the TS-421/U to 0 volt.
o. Remove the ME-80A/U, the Special junction
box and the TS-421/U from the TS-1777/VRM-
1 probe assembly.
47. Amplifier, 5.65-Mc, Tests
(fig. 34.6)
a. Connect the equipment as shown by the solid
lines in figure 34.6. Also make temporary connec-
tions A and B.
b. Using the special junction box, connect the
AN/URM-145 across the TS-1777/VRM-l probe
tip and probe ground connector.
c. Turn the TS-1777/VRM-l selector switch
to 12.
d. Adjust the AN/GRM-50 for an output of
5.65 mc ±100 cps as indicated on the AN/USM-
26, and decrease
the output to 0 volt, using the
fine attenuator.
Figure 34.5. (Added) Audio voltage test setup, block diagram
7