Quantcast Figure 7-1. Express Orderwire Multidirection Unit, Schematic Diagram, (Sheet 2 of 2)

 

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Figure 7-1. Express Orderwire Multidirection Unit, Schematic Diagram, (Sheet 1 of 2)
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TM-11-5805-451-15 Philco Express Orderwire Multidirection Hut Manual
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Figure 7-2. Four-Way, Four-Wire Hybrid Board, Schematic Diagram
TM
11-5805-451-15
TABLE 1
NOTES:
1.  SYMBOL A = 4 WAY/4 WIRE HYBRID P. C. BOARD
ASSY 305-41264.
SYMBOL AT = 5 PAD ATTENUATOR P. C. BOARD
ASSY 368-42056.
SYMBOL AR - VOICE FREQUENCY AMPLIFIER P.C.
BOARD ASSY 368-41965.
2.  ALL INPUT AND OUTPUT IMPEDANCES ARE 600
OHMS. TERMINATIONS SHOULD BE USED AS SPECI-
FIED IN TABLE 1.
s.  THE TRANSMISSION LOSS THROUGH A 4 WAY/4 WIRE
HYBRID IS NOMINALLY 15 DB. THE VOICE FREQUENCY
AMPLIFIERS HAVE A CONTINOUSLY VARIABLE GAIN
BETWEEN 0 - 30 DB. THE 5 PAD ATTENUATOR SUPPLIES
ATTENUATION LEVELS OF 0 - 31 DB ON A STRAPPABLE
BASIS IN 1 DB STEPS.
4.   NUMBERS SHOWN AT PORTS OF FUNCTIONAL BLOCKS
ARE CONNECTOR PIN NUMBERS. AMPLIFIERS AR1A.
AR2A. AR3A. & AR4A HAVE THEIR GAIN ADJUSTMENTS
AT THE TOP AND AMPLIFIERS AR1B, AR2B, AR3B, & AR4B
HAVE THEIR GAIN ADJUSTMENTS AT THE BOTTOM.
a.  AMPLIFIER BOARD AR1 IS NOT USED WHEN THE MULTI-
DIRECTION UNIT IS DRIVEN AT TERMINALS TB2-1. TB2-2,
TB6-1 & TB6-2 FROM A SINGLE DIRECTION EXPRESS
ORDERWIRE. ANY OTHER APPLICATION REQUIRING AN
AMPLIFIER BOARD IN THIS POSITION CAN BE IMPLEMENTED
BY REMOVING THE JUMPERS ON J1 AND INSERTING THE
AMPLIFIER BOARD 368-41965.
7-1. E x p r e s s O r d e r w i r e M u l t i d i r e c t i o n
Figure
Unit, Schematic Diagram (Sheet 2 of 2)

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