ZETRON 640 DAPT XTRA, Installation And Repair Manual

Page: 82 / 210

Installation
70 025-9416
Motorola PURC® Transmitter Interface
Direct cable hookup between the Model 640 radio station interface and a colocated Motorola
Paging Universal Remote Control (PURC®) transmitter is shown in Figure 32. The wiring
configuration depends on whether the transmitter has a “unified” or “non-unified” backplane.
The Motorola pin numbers refer to the backplane terminal blocks (TB).
Motorola PURC® Transmitter
Model 640 RJ21
Radio Station Output
Signal Name Unified
(TRN4860)
Pin #
Non-Unified
(TRN5349)
Pin #
AUX PTT NO (23) LOCAL PTT TB3 - 8 TB2 - 8
DIG DATA (42) RECEIVE DATA TB3 - 13 TB2 - 2
DIG MODE (14) CARRIER DETECT TB3 - 19 TB2 - 17
XMIT AUDIO HI (15) UNNOTCHED
AUDIO TB3 - 20 TB2 - 18
XMIT AUDIO LO (40)
AUX PTT COM (24)
GROUND (17) GROUND TB3 - 1 TB2 - 1
Figure 32. Wiring Configuration for Colocated Motorola PURC® Station
Notes on Figure 32:
1. If the Motorola PURC® transmitter is equipped with a built-in UDS 202 modem, disable it.
2. The following parameter settings are typical for connection to a Motorola PURC® transmitter. In the Model 640
Key Up Control database set:
•
the ModeSgnlPlrty parameter to “high” for digital
•
the DigDataPolarity parameter to “0” for inverted data
3. Other various timing parameters, such as PTT keying and analog/digital mode change delay, are also set in the
Model 640 databases.