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Installation
8
025-9368H
TYPICAL CONNECTIONS
Figure 1 provides a graphic presentation of a typical Model 748 to transmitter/receiver connection.
Figure 2 shows the Model 748 cable connector pin numbers and descriptions.
MODEL 748
AC/DC Input 1
Ground 3
Phone Line
♦
TX Audio Out 11
CTCSS Encode 13
PTT (
transmit
) 7
Ground 4
Discrimnator 15
COR 10
Auxiliary Input 9
STATION SUPPLY
+12 volts DC
Ground
E-E Phone line
(PSTN or PABX)
TRANSMITTER
Transmit Audio Input
Direct Modulation Input
Transmit PTT Input
Ground
RECEIVER
Ground
Discriminator Output
Receive Signal Indication
Transmit Channel
Busy Indication
Antenna
DUPLEXOR
TX RX
Figure 1. Typical Model 748 Installation
Содержание 748
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Страница 230: ...Repair 216 025 9368H MODEL 7XX CONTROL BOARD 702 9793D Silkscreen...
Страница 233: ...Repair 025 9368H 219 MODEL 7XX SINGLE E E CARD 008 9794A Schematic...
Страница 234: ...Repair 220 025 9368H MODEL 7XX SINGLE E E CARD 702 9794A Silkscreen...
Страница 236: ...Repair 222 025 9368H MODEL 4XB VOICE CARD 008 9236F Schematic...
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Страница 239: ...Repair 025 9368H 225 MODEL 4XB DIAL CLICK BOARD 008 9242E Schematic...
Страница 240: ...Repair 226 025 9368H MODEL 4XB DIAL CLICK BOARD 702 9242E Silkscreen...
Страница 254: ...Quick Reference 240 025 9368H Notes...
Страница 258: ...Specifications 244 025 9368H...
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