Instruction Manual MR-88 Eight Channel Contact Closure Receiver © Copyright 2008, American Fibertek, Inc.
INSTALLATION AND OPERATION INSTRUCTIONS INTRODUCTION Thank you for purchasing your American Fibertek MR-88 multimode supervised contact receiver. Please take a few minutes to read these installation instructions in order to obtain the maximum performance from this product. FUNCTIONAL DESCRIPTION The MR-88 operates as half of a transmitter/receiver pair for the transmission of eight supervised dry latching contact closure signals.
af i american fibertek CONTACT CLOSURE OUTPUT CONNECTIONS Contact closure output connections are made via terminal blocks attached to the right side of the unit. Please note that the three Channel 1 output connections begin at the second terminal screw closest to the fiber connection on each of the three nine pin terminal strips. Channels 2 through 8 connections continue down the terminal strip.
RESET PUSH BUTTON A recessed momentary contact push button is located on the left side of the chassis near the LED indicators. Pushing this button causes the MR-88 outputs to be reset to their default states. LATCHING SELECT SWITCH A latching select switch is located on the left side of the chassis near the LED indicators. When switch #1 is set to the up (off) position, all contact output states remain unchanged during a loss of optical connection or DC power to the MR-88.
