RFL Electronics GARD 8000 - Comms I; O Base Module and Comms M Odules

Module Descriptions
GARD 8000 SYS RFL Electronics
April 23, 2015 6-37 973.334.3100
6.8 COMMS I/O BASE MODULE AND COMMS MODULES
The function of the Comms I/O Base module (500850) is to hold one Comms module and one I/O
module. The Comms module and the I/O module plug onto the Comms I/O Base using an array of
connector pins on the Comms I/O base which plug into mating connectors on the Comms module and
the I/O module. The location of the I/O module and the Comms module in the Comms I/O Base is
shown in Figure 6-21.
There are various types of Comms modules that can be mounted on the Comms I/O Base as follows:
Refer to Figure 6-22 for the panel views of the Comms modules.
RS-232 Async Comms Unit (Dual Auxiliary Channel Module)
RS-449, X.21, V.35 Comms Unit (Digital Interface Module)
G.703 Comms Unit
T1/E1 100/120 Ohm Unit
E1 75 Ohm (BNC) Unit (See Note below)
C37.94 Unit
Fiber Unit, 1300 nm LED
Fiber Unit, 1300 nm Laser
Fiber Unit, 1550 nm Laser
Note: On the E1 75 Ohm Unit, Jumpers J12 and J13 are used to ground the shield of the E1 coaxial
connectors, when required. The default positions are:
J12 – U (RX port shield ungrounded)
J13 – G (TX port shield grounded)
There are three types of I/O modules that can be mounted on the Comms I/O Base as follows:
Input Unit
SS Output Unit
Relay Output Unit
Refer to paragraphs 6.7.1, 6.7.2 and 6.7.3 for additional information on these modules.
WARNING!
YOUR GARD 8000 TERMINAL MAY BE EQUIPPED WITH COMMS MODULES THAT
HAVE FIBER OPTIC EMITTER HEADS. FIBER OPTIC EMITTER HEADS USE A LASER
LIGHT SOURCE THAT PRODUCE INVISIBLE RADIATION. FIBER OPTIC
COMMUNICATION SYSTEMS ARE INHERENTLY SAFE IN NORMAL OPERATION
BECAUSE ALL RADIATION IS CONTAINED IN THE SYSTEM. IT IS POSSIBLE DURING
MAINTENANCE TO EXPOSE THE RADIATION BY REMOVING OR BREAKING THE
FIBER. STARING DIRECTLY INTO THE LIGHT BEAM MAY RESULT IN PERMANENT
EYE DAMAGE AND/OR BLINDNESS. NEVER LOOK DIRECTLY INTO THE LIGHT
BEAM AND BE CAREFUL NOT TO SHINE THE LIGHT AGAINST ANY REFLECTIVE
SURFACE.
THE LASER SOURCE IS A CLASS I LASER PRODUCT WHICH COMPLIES WITH
APPLICABLE FDA, OSHA AND ANSI STANDARDS.