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Installation
025-9416
69
Generic Transmitter Interface
Figure 31 describes the basic radio station interface configuration for the Model 640.
Model 640 RJ21
Radio Station
Output
Paging
Transmitter
Signal Inputs
DIG MODE
(14)
DIGITAL RTS
XMIT AUDIO HI
(15)
AUDIO INPUT HI
AUX PTT NO
(23)
LOCAL PTT
DIG DATA
(42)
DIGITAL DATA
XMIT AUDIO LO
1
(40)
AUDIO INPUT LO
AUX PTT COM
(24)
GROUND
(17)
GROUND
Figure 31. Wiring Configuration for Colocated Radio Station
Notes on Figure 31:
1. For single-ended systems, the XMIT AUDIO LO signal should be tied to GROUND. For balanced 600
Ω
systems,
the XMIT AUDIO LO signal should be tied to AUDIO INPUT LO.
2. If a Motorola PURC® transmitter is used, disable the built-in UDS 202 modem.
3. In the Model 640 Transmitter Key Up Control database set:
•
the ModeSgnlPlrty parameter to “high” for digital
•
the DigDataPolarity parameter to “0” for inverted data
Содержание 640 DAPT XTRA
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