American Fibertek MRX-8889C - Manual (Page 4)

4
For mounting the unit flush to a wall or other rigid
surface, the ears may be installed on the sides with
the oval holes flush with the bottom of the unit as in
Figure 2. Mount the ears with the #10 flathead
screws provided. Mount the unit to a rigid surface
using #10 (5mm) screws.
POWER SOURCE
The internal power supply accepts universal line voltage. Any mains supply from 100 to 240
VAC, 50 to 60 Hz, may be used without modification or adjustment. A universal power
connector is provided on the rear of the unit to facilitate connection to the power mains.
POWER CONNECTION
The unit is supplied (in the US and UK only) with a three conductor power cord. The “ground”
conductor is directly connected to the chassis.
INPUT / OUTPUT CONNECTIONS
The fiber optic connection is made via a ST connector located at the back of the unit. Be sure to
allow sufficient room for the required minimum bend radius of the fiber cable used.
Video input and output connections are located on the rear of the unit. A BNC connector is
provided for each channel. The video inputs are connected to an appropriate 75
Ω baseband
source such as a camera or a video recorder output. The 75
Ω video outputs can be looped
through typical baseband video inputs of switchers, recorders and other equipment as required.
For proper operation, the outputs must be terminated with 75
Ω. For optimum performance the
video cables should be the shortest length of coax practical.
Data input and output connections are located on the rear panel terminal block. A mating plug
connector is provided. The figure below identifies the specific connections for RS422 / Contact
Closure data. See next page for RS485 data connections.