MDS 05-3628A01, Rev. B
MDS 4790M (MPT 1411) I/O Guide
17
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
TM
Cable (GE MDS P/N 97-1677A28) or
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.
Invisible place holder
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.
Invisible place holder
Figure 13. Data Connector
OPTIONAL POWER SUPPLY
(Redundant Models)
ADDITIONAL HEATSINK
(Redundant Models)
HEATSINK
RADIO A
RADIO B
J10 ALARM
J2
4-WIRE AUDIO
J9
RJ-11
ORDERWIRE
J1
DIAGNOSTICS
(DB-9)
Power Supply
POWER
ON/OFF
POWER
INPUT
ANTENNA
DATA
(DB-25)
EXT. DUPLEXER
(OPTIONAL)
1
13
25
14
