Bird Technologies 429-83H-01 Series-Manual - Manual (Page 21)

TX RX Systems Inc. Manual 7-9439-6 09/03/09 Page 13
4) Connect a double-shielded CAT-5e cable from
the RJ45 plug on the rear panel of the MCU to
the RJ45 connector on the lightning arrester at
the building entry ground plate. We recommend
using a pre-built cable from L-Com (part #
TRD855DSZ-XX). The -XX suffix represents
the cables length in feet. An equivalent cable
from another manufacturer is acceptable.
5) If optional additional protection of the data com-
munications line is desired a Data Network Pro-
tector can be installed. Use PolyPhaser part #
NX3-05. The data network protector must be
grounded to the equipment rack master ground
bar. Keep this ground wire as short as possible.
See Figure 13.
6) Connect the optional data network protector to
the lightning arrester with the cable from step 4.
Then connect the rear panel MCU data port to
the data network protector with a short length of
double-shielded CAT-5e cable. We recommend
using a pre-built cable from L-Com (part #
TRD855DSZ-XX). An equivalent cable from
another manufacturer is acceptable.
7) If you have a supervisory alarm system, con-
nect its wiring harness to the terminal screws at
the back of the MCU. Refer to Figure 14.
8) Connect the station receivers and optional 16-
port receiver multicoupler expansion deck to the
output ports on the back of the MCU with high-
quality 50-ohm coaxial cable such as 1/4-inch
superflexible transmission line. Some flexibility
in the jumper cables will prevent strain and pos-
sible damage to the connections. We also rec-
ommend the use of quality BNC connectors.
Unused receiver outputs need not be termi-
nated. However, unused expansion ports (the 2
left-most ports) should be terminated with 50
ohms until connected to an expansion panel
(refer to Figure 2C).
Master Ground Buss
Equipment Rack
Master Ground Bar
Internal Perimeter Ground (Halo)
MCU Rear Panel
ground stud
Ground Wire
Keep as short
as possible
RJ45
RJ45
RJ45
RJ45
Short CAT 5e
patch cable
(double shielded)
NX3-05
Locate Data
Network Protector
as close to MCU
Data Port as possible
Lightning Arrester
TX RX part number 8-21550
RS 485 Data Line
CAT 5e patch cable
(double shielded)
Figure 13: For optional additional protection install the data network protector.