DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
TELEPHONE TEST SET TS-716/U
NORMS AND TESTING PROCEDURES
Headquarters, Department of the Army, Washington, D.C.
10 May 1971
WARNING
DANGEROUS VOLTAGES EXIST IN THIS EQUIPMENT
Be careful when working on the
115/230-volt-ac line connections
and TEL LINE terminals L1 and L2.
Up to 100 volts dc may be on the
TEL LINE terminals.
DO NOT TAKE CHANCES!
Paragraph
Page
Introduction....................................................................................................................................... 1
Scope ............................................................................................................................................... 2
Equipment listing .............................................................................................................................. 3
Preliminary control settings .............................................................................................................. 4
Starting procedure ............................................................................................................................ 5
Stopping procedure ......................................................................................................................... 6
Dynamic microphones test ............................................................................................................... 7
Carbon microphones test ................................................................................................................. 8
Earphones, receiver, and headset test............................................................................................. 9
Headset-microphone combination test ........................................................................................... 10
Handsets test ................................................................................................................................. 11
Telephones tests ............................................................................................................................ 12
Dials test ........................................................................................................................................ 13
Ringers test .................................................................................................................................... 14
Generators test............................................................................................................................... 15
Insulation resistance test ................................................................................................................ 16
Continuity test................................................................................................................................. 17
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