b. Additional Equipment.
Perform all
b. .Modification Work Orders.
- . .
applicable modification work orders (MWO) per-
taining to this equipment before making the tests
63. General Test Requirements
Specified. DA Pam 310-4 lists all available
Most of the tests will be performed under con-
MWO's.
ditions listed below and illustrated in figure 34.3.
Testing will be simplified if connections and front
62. Test Facilities Required
panel control settings are made initially and modi-
fications are made as required for the individual
The following equipments, or suitable equip-
tests.
ment, will be employed in determining compli-
a. Connect the special test cable to the model
a n c e with the requirement of this specific
3206 power supply.
standard
b Connect the three-terminal connector of the
CX 7899/VRM-1 to terminals A, B, and C of the
a. Test Equipment.
terminal connector on the special test cable.
c. Connect the four-terminal connector of the
CX-7899/VRM 1 to the POWER connector on
the front of the TS-1777/VRM-1.
Caution: Never apply a signal to the TS-1777/
VRM-1 before turning on the power to the TS-
1777-VRM-1.
64. Input Test
(fig. 34.3)
a. Be sure that no signal is applied to the probe
of the TS-1777/VRM-l.
b. Adjust the model 3206 power supply for a
0-volt dc output.
c. On the AN/VRM-1, set the ON-OFF switch
to ON and turn the selector switch to A.
d. Increase the model 3206 power supply. out-
put and note the voltage indicated on the ME-
26A/U when the RED indicator on the TS-1777/
VRM-1 lights. The RED indicator must light
when the indicated voltage is between 21 and 22
volts dc.
e. Connect the dc leads of the ME-26A/U to
terminals A (ground) and J (B+) of the 18-
terminal female connector of the CX-'7899/VRM -
1. The voltage must be between 21 and 22 volts
dc.
3
