American Fibertek RTM-61 - Manual (Page 3)

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VIDEO INPUT CONNECTION
The video input connection is made via a BNC connector on the back of the unit. The video input
should be connected to an appropriate 75
Ω baseband video source such as a camera or a video
recorder output. For optimum performance the video cables should be the shortest length of coax
practical.
FIBER CONNECTION
The fiber optic connection is made via a ST connector located on the right side of the unit. Be sure to
allow sufficient room for the required minimum bend radius of the fiber cable used.
SENSORNET INPUT / OUTPUT CONNECTIONS
Data input and output connections are made via a terminal block on the right side of the unit. Follow
the drawing below for proper orientation of Sensornet data input/output wires.
DATA TERMINATION REQUIRMENTS
The RTM-61 is shipped from the factory with internal data input/output 120 ohm termination
switched off. In order to configure the internal termination, the unit needs to be opened up and
switch setting #2 needs to be modified using the internal switch/jumper settings shown below.
There are several other switches on the same switch bank with the data termination switch.
These switches must not be changed. The drawing below indicates their original positions.
To open the RTM-61, remove the three Phillips head screws holding the top cover, then remove the
top cover. The six position switch bank is located near the center of the card.