CHAPTER 3. OPERATING INSTRUCTIONS - TM-11-6625-3023-140012

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

CHAPTER 3

OPERATING INSTRUCTIONS

Section I. CONTROLS AND INDICATORS

3-1.

Introduction. This section presents the operating instructions for the test set and includes the functions of all

operating controls and indicators.

3-2.

Controls and Indicators. The test set controls and indicators are shown in figure 3-1 and functionally described

Section II. OPERATION

3-3.

Introduction. This section provides the operating procedures for the test set. These procedures consist of the

test set operational check and the operating instructions for checking the performance of the bulk, coaxial and EOW line

ESA devices. Maintenance schedules require that each signal line ESA device be tested upon initial installation prior to

operation of a system that has been relocated and also tested periodically at specific predetermined intervals.

NOTE

The operational procedures described herein apply to the AN/TTC-39 System as well as to

other systems containing electric surge arrestors. See references in Appendix A for specific

details when testing electric surge arrestors in the AN/TTC-39 System.

3-4.

Test Set Operational Check.

Equipment Required. A digital multimeter or equivalent.

WARNING

Test set ground is provided through the third wire of the AC power cord. The test set must

be powered from the system under test or a lethal voltage potential could be developed

between the hardware and the ESA test set case.

Procedure.

(1)

Connect test set power cord into a 115 VAC (50, 60, or 400 Hz) power outlet within the system under

test.

(2)

Turn POWER switch to ON position. The red lamp should light. If it does not, refer to paragraph 5-6.

(3)

Perform lamp test by placing TEST switch in SHORT position and press the two momentary TEST

toggle switches simultaneously. The green lamp should light.

3-1