Interface Wiring Connections; Tx, Antenna, And Rx Coaxial Connectors (Type-N) - GE MDS 4790 Series Installation & Operation Manual

Power Supply
POWER POWER
ON/OFF INPUT
OPTIONAL POWER SUPPLY
(Redundant Models)
* Present when external duplexer or
cavity filter is supplied. Otherwise, holes
are plugged. See text.
Application # 1—
No External Devices
18
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When installing the feedline, do not kink, twist, or stretch the cable.
After installation, fasten the cable securely to the antenna tower or other
supporting structure.
A Type-N connector is required to connect the feedline to the radio.
Install the feedline connectors in accordance with the manufacturer's
instructions. Follow the manufacturer's recommendations for weather-
proofing 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
you to mount the radio slides, and to pull it out without stressing the
transmission line.

4.6 Interface Wiring Connections

Make all connections to the master station at the rear panel (see
Figure 13). Refer to the following descriptions for specific information
on these connections.
J3
DATA
(DB-25)
J1
J9
DIAGNOSTICS
RJ-11
(DB-9)
ORDERWIRE
ANT
TX*
Figure 13. Master Station Rear Panel

TX, Antenna, and RX Coaxial Connectors (Type-N)

These are for connection to the station antenna, or external equipment
such as a duplexer or cavity filter. The connectors present depend on
whether the radio was shipped for operation with these external devices.
The most common arrangement of the master station is to connect
directly to the antenna system. In such cases, only the
present and the other coaxial connector holes are plugged.
Page 19 shows a direct antenna connection.
MDS 4790/9790 Series I/O Guide
Cable (MDS P/N 97-1677A28) or
TM
Invisible place holder
J2
4-WIRE AUDIO
J10 ALARM
Ground Lug
ADDITIONAL HEATSINK
(Hidden)
(Redundant Models)
†
RX*
†
Present when internal duplexer is supplied.
Otherwise, hole is plugged. See text.
MDS 05-3438A01, Rev. F
HEATSINK
RADIO A
RADIO B
connector is
ANT
Figure 14 on