American Fibertek RRX-81B - Manual (Page 3)

3
FIBER OUTPUT CONNECTION
The fiber optic connection is made via a ST connector located on the back of the unit. Be sure to allow
sufficient room for the required minimum bend radius of the fiber cable used.
CONTACT CLOSURE INPUT AND OUTPUT CONNECTIONS
Contact closure input and output connections are made via terminal blocks attached to the right side of
the unit. Please note that the two Channel 1 outputs begin at the second terminal screw closest to the
fiber connection on each of the two nine pin terminal strips. Channels 2 through 8 connections continue
down the terminal strip. For optimum performance the copper cables carrying the contact closure signal
should be the shortest length of wire practical. See drawing below for contact closure connections.