Instruction manual

Installation
025-9416 77
Generic Transmitter Link Controller Interface
Figure 41 illustrates a typical cable hookup between the Model 640 radio station interface and
most brands of transmitter link controllers such as a Quintron Omega, Microlink 20T, or
Motorola DDC. (For connections to a Motorola PSC or SSC transmitter link controller, see the
signaling description in the following subsection.)
Model 640 RJ21
Radio Station Output
Transmitter Link
Controller Signal
Inputs
ZONE ADR 1
1
(47) ZONE ADDRESS
ZONE ADR 4
1
(46) ZONE ADDRESS
DIG PTT NO (45) DIGITAL REQUEST
ANA PTT NO (43) ANALOG REQUEST
DIG DATA (42) DIGITAL DATA
BUSY
2
(41) CTS DIGITAL
XMIT AUDIO LO (40) TONE AUDIO LO
ZONE ADR 2
1
(22) ZONE ADDRESS
ZONE ADR 8
1
(21) ZONE ADDRESS
DIG PTT COM (20)
ANA PTT COM (18)
GROUND (17) GROUND
COR
2
/ CAS (16) CTS ANALOG
XMIT AUDIO HI (15) TONE AUDIO HI
Figure 41. Wiring Configuration for Transmitter Link Controller
Notes on Figure 41:
1. Zone address outputs from the Model 640 are active low.
2. Default polarity for the COR and BUSY inputs are active low (0 volts = logic “1”). The busy LED should not be lit
when idle. If reversed polarity is desired, move jumpers JP4 and JP6 on the peripheral board to position A -
active high.
3. The following parameter settings are typical in the Model 640 database. In the Transmitter Key Type database
set:
ModeTime = 50 ms BusyTime = 25 ms
StaRmtCtrl = RTS/CTS