Figure 3-1. AN/ PRC-90 battery (BA-1568 / U) test setup.

TM 11-6625-2631-14

its lead terminations at the connector designated

(2) AN / URT-27 batteries are connected to

K308 on the front connector block; the second type

the test set with the male connector (red lead ) to the

of battery is detachable from the rear cover and is

+ terminal; and the female connector (black lead)

tested by insertion into the receptacle designated

to the -- terminal. Both terminals are located on

K308A on the right side of the test set. This battery

t h e front connector block beneath the URT-27

also uses an epoxy material over the battery con-

designation.

tacts; to allow the test set wire contacts to penetrate

(3) AN/ URC-1O batteries are connected to

t h e test set via the molded cable / connector

this material, the battery must be firmly inserted

a n d held in place while the meter readings are

a s s e m b l y located beneath the connector block,

interpreted.

d e s i g n a t e d URC-10.

(4) SD U-5 / E batteries are screwed into a

(6) AN/ PRC-90 batteries require the use of

special receptacle located on the right side of the

special Battery Test Adapter MX-8801 / PRC-90,

test set, designated SD U-5 / E. Battery terminal

to interface the battery terminals with the test set

contact is made through the battery epoxy surface,

connector. The adapter leads are first connected to

which is penetrated by sharp rigid wire contacts

t h e battery test set connector block terminals

w i t h in the test set connector; be sure that the

designated PRC-63, with the male connector (red

battery is fully screwed into the receptacle.

lead ) to the + terminal; and the female lead (black

(5) ACR / RT-1O batteries are inserted into

lead ) to the -- t e r m i n a l . The battery is then in-

one of two receptacles on the test set. Two different

s e r t e d into the adapter in accordance with the

battery configurations are used with this type of

polarity markings. A typical test configuration for

radio set. One type of battery is formed as part of

this battery is shown in figure 3-1.

the rear cover assembly and must be tested through

Figure 3-1. AN/ PRC-90 battery (BA-1568 / U) test setup.

set if battery polarity is not observed during

procedure

b. Procedure. T h e

following

test connections.

describes a typical battery test:

( 1 ) Check the date of manufacture on the

CAUTION

b a t t e r y in accordance with the information in

Permanent damage may occur to the test

paragraph 3 - 3 a .

3-2