Pathway MR Installers Guide - Manual (Page 7)

DMXPathfinder LR Installation & Assembly
6
One of two types of cable termination boards are normally supplied with the
system to provide the physical interface between the DMXPathfinder MR
O UTPUT M ODULES AND EXTERNAL STATION CABLING
Model P2020 32-way terminal block transition boards are the most commonly
used method of connecting the DMX output station cabling. These boards
mount directly to the rear of each output module using five 6-32 standoffs and
screws. They electrically connect to each Output Module with eight 25-pin D-
style connectors, therefore a certain amount of force is required to mate the
two parts. Ensure that all 8 connectors are fully mated and that the board is
resting on the standoffs before installing the five screws.
If the DMXPathfinder MR is to be installed in a swing-out (hinged) type of
equipment rack, a different type of termination board is usually supplied, the
DMS-16LT type. These are 16-way boards, intended for mounting in the rear
of the equipment rack, on the rear service panel or on 4U rack panels
supplied by the installer or the factory, depending on project requirements.
25-conductor twisted pair ribbon cables, 1-meter long, interconnect these
boards with the rear of the DMXPathfinder MR Output Modules. Two
termination boards should be installed side-by-side on each panel. We
recommend the use of 3/8"-1/2" 6-32 threaded standoffs and 1/4" screws to
attach the boards to the mounting panels. Insulated hardware is not
necessary.
Using DMS-16LT termination boards, mounting and external station cabling
may be completed well in advance of installation of the rest of the
DMXPathfinder MR hardware.
I/O C ABLE I NSTALLATION
Input and Output cabling may enter the equipment rack through the top or
bottom. Bundle cables at either side of the rack, just in front of the
termination boards. Cabling installed to the rear of the rack from the panels
will obscure access to terminal blocks at the extreme edges of the
termination boards.
Cables are then dressed into place for connection at the input/output terminal
blocks. Note the order of the terminal blocks. On 32-way boards they are
labeled TB1 to TB32 and are arranged right to left, top to bottom. On 16-way
boards they are labeled TB1 to TB16 and are arranged top to bottom, left to
right.