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OPERATIONAL PERFORMANCE TESTS
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TM-11-5805-451-15 Philco Express Orderwire Multidirection Hut Manual
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OPERATIONAL PERFORMANCE TEST PROCEDURE (Cont) - TM-11-5805-451-150030
11-5805-451-15
TM
TABLE 5-3. OPERATIONAL PERFORMANCE TEST PROCEDURE
(Refer to figure 7-1. )
PROBABLE
CAUSE OF
NORMAL
OPERATION
TEST
TROUBLE
INDICATION
2 AND 3 DIRECTION CONFIGURATIONS
Printed Wiring Boards Provided:
Voice-frequency amplifier boards iamplifiers): None
Adjustable attenuator boards (attenuators): AT7 in J15, AT8 in J16, and
(for 3-direction only) AT9 in J17
Four-way, four-wire hybrid boards (hybrids): Al in J2
Strapping Connections- TB4-3 to TB4-1, TB4-4 to TB4-2, TB1-1 to TB4-5,
TB1-2 to TB4-6 and (for 3-direction only) TB4-7 to TB4-9, TB4-8 to
TB4-10
Points Terminated: TB4-7 & 8 and TB1-9 & 10 (2-direction only)
LEVEL CHECKS - 2 AND 3 DIRECTION
1
Terminate the following
terminals with 600-ohm
resistors: TB1-5,6;
TB1-7,8, TB3-1,2,
TB5-5,6, TB5-7,8: and
TB6-1.2, for 3 direction,
also terminate TB1 -9,10
and TB5-9,10.
2
a. Remove termination at
TB6-1 & 2 and insert
1-kHz test tone at -5
dBm.
b. Measure level at
-20 dBm
Faulty hybrid Al
TB4-3 & 4.

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