Procedure-continued - TM-11-6625-3023-140015

TM 11-6625-3023-14/ET904-AA/MMA-010/E154 TS3684/TO 33A1-12-1173-1

(4)

Connect the red booted alligator test lead, supplied with the test set, into the jack marked BULK-EXT.

(5)

Connect the test lead to the voltage probe of the digital multimeter.

CAUTION

Be sure that the test lead and the meter probe do not touch any part of the metal of the test

set. Place the connection on an insulated surface.

(6)

Connect the common lead of the multimeter to earth ground. A common connection may be obtained

on any metal of the panel switches and jacks, such as the sleeve of the BULK telephone jack.

(7)

Set multimeter to the 1000 VDC scale.

(8)

Set TEST switch in the OPEN position.

(9)

Set rotary switch in the BULK position.

(10)

Set TIP-RING switch in the TIP position.

(11)

Press the momentary toggle switches at the same time.

(12)

The multimeter should read 500 VDC +8% (see note). If it does not, the test set is out of specification

and should be sent for repair. See chapter 6, General Support Maintenance.

(13)

Move the red booted alligator test lead from the BULK-EXT jack to the EXTERNAL jack.

(14)

Set multimeter to the 300 VDC scale.

(15)

Set rotary switch to the EXTERNAL position.

(16)

Press the two momentary toggle switches at the same time.

(17)

The multimeter should read 140 VDC +8% (see note). If it does not, the test set is out of specification

and should be sent for repair. See chapter 6, General Support Maintenance.

NOTE

The tolerance allows for the meter accuracy and the effect of slight heating of the zener

3-4