Insulation Resistance Test

Keys not listed in the chart remain in the unoperated position.

rying parts of the switch, and between the

7. Insulation Resistance Test

switch frame and its current-carrying

With the plug on Test Lead CX-3303/G

parts.

inserted in L1-L2 on the AN/PTM-6, and

the clips on the other end of the test leads

8. Handset H-60/PT Continuity Test

attached to the handset cords, an insulation

A continuity test of thiS handset may be

resistance test must be made with the

made by using the lowest scale on Multi-

handset cord and switch wired to the hand-

meter TS-352/U. With the red and green

set. The transmitting and receiving units

wires of the handset tied together, measure

must be removed from the handset. A read-

continuity between the orange and white

ing to the left of -6 db must be indicated

wires. The press-to-talk switch must be

on. meter M1 in the AN/PTM-6 when the

depressed. The meter reading on the TS-

insulation resistance is tested between the

352/U must be 7 ohms.

cord conductors, between current-car-