Interface Wiring Connections; Data Connector - GE MDS 4790M Installation And Operation Manual

Power Supply
POWER
ON/OFF
MDS 05-3628A01, Rev. B
A Type N connector is required to connect the feedline to the radio. The
feedline connectors must be installed in accordance with the manufacturer's
instructions. Follow the manufacturer's recommendations for weatherproofing
connectors that will be installed outdoors.
If large-diameter, semi-rigid coaxial cable is used for the feedline, insert a
short length of 1/4 inch Superflex
other low-loss flexible cable between the radio and the feedline. This flexible
interface eliminates tight bends in the feedline and reduces stresses on the
feedline and connectors. The flexible section also allows the radio to be
mounted on slides and pulled out without placing undue stress on the
transmission line.

4.6 Interface Wiring Connections

All connections to the radio are made at the rear panel (Figure 12). In addition
to the power and antenna connections already discussed, there are three
interface connectors: J1–Diagnostic Port, J2–Alarm, and J3–Data.
J1
POWER DIAGNOSTICS
INPUT (DB-9)
ORDERWIRE
OPTIONAL POWER SUPPLY
(Redundant Models)
ANTENNA
Figure 12. Master Station Rear Panel

Data Connector

The data connector (available on the rear of the radio) is the main system data
interface and typically connects to the host computer.
Refer to Figure 13 and Table 3.
MDS 4790M (MPT 1411) I/O Guide
TM Cable (GE MDS P/N 97-1677A28) or
Invisible place holder
J2
J9
4-WIRE AUDIO
RJ-11
J10 ALARM
ADDITIONAL HEATSINK
DATA EXT. DUPLEXER
(DB-25) (OPTIONAL)
Invisible place holder
13
14
25
Figure 13. Data Connector
HEATSINK
RADIO A
(Redundant Models)
RADIO B
1
17