Seating of Fuses

TM 11-6625-1702-12

i n s t a l l e d in the 2 AMP fuseholder (fig. 2-3).

b. Loosen the four fasteners that hold the

Caution: Use only fuses of the correct value

control panel, lift the test set from the test set

when replacing a fuse. Overusing can result

case, and place it into position. (If desired, the

in damage to the equipment.

test set may be operated without removal from

the test set case.)

2-6. Connections

c. Remove the cables stored on the ground

W h e n the antenna coupler is mounted on the

p l a n e , loosen the four fasteners holding the

g r o u n d plane, it is connected to the control

ground plane, remove it from the test set cover,

panel by means of W1 and W2, When the an-

unfold its sides and legs, and place it upright

tenna coupler is mounted on the control panel,

in a desirable position in relation to the con-

i t is direct-connected to the control panel

trol panel.

P O W E R and RF plugs without using cables

d. When the radome is to be used, unfasten

W 1 and W2. In this latter situation, a milli-

t h e straps that hold it, remove it from the

volt output cable (test lead) connection is re-

t e s t set case, insert into its base the antenna

q u i r e d from FL1 and FL5 of the coupler to

c o u p l e r , insert the radome into the ground

the control panel MV OUTPUT jacks (fig. 2-

plane, using the opening provided for it, and

3). In both testing situations, the control panel

s e c u r e the radome in place by clamping its

must be connected to the vhf/fm radio set, the

base with the fasteners provided on the ground

power supply, and the oscilloscope. Two power

p l a n e . (The protective cover on the antenna

s o u r c e cables are used to connect the power

coupler may be removed if desired for maxi-

supply to the control panel 28V INPUT jacks.

mum access to the antenna coupler components

T h e oscilloscope is provided with a connect-

by removing the screws which hold it. )

ing cable. The CG-3375/U is required to con-

nect the rf output of the vhf/fro radio set to

2-5. Seating of Fuses

t h e RF INPUT on the test set control panel.

The chart below lists the cables and shows no-

T e s t Set, Antenna AN/ARM-115 contains one

m e n c l a t u r e s , length, and points of origin and

2 - a m p e r e fuse which is installed before the

AN/ARM-115 is shipped. See that this fuse is

destination.

2-3