Bullhorn SDT16 Family, Installation And Configuration Manual, Page: 61 / 110

SDT16 Family Installation and Configuration Guide
Chapter 2. Installation 51
Connecting Input Wires to the Unit
In most cases you can connect the input device(s) directly to the input channels on the SDT16-
GSM, SDT16-ORB, or SDT16-SAT unit. To ensure a clean stable reading, keep field wiring as
short as possible to maintain signal integrity and use shielded twisted pair wire such as Alpha
2463C. Also refer to the diagram provided in the installation kit.
Complete the following steps:
1.
If the input device has a voltage output, turn the device
Off
to remove power from field
wiring.
2.
Route input wires toward the terminal blocks on the controller board in the following
manner. See Figure 1-1 on page 3 (GSM), Figure 1-2 on page 4 (ORB), or Figure 1-3 on
page 5 (SAT).
•
through the
½
inch NPT water-tight fitting,
•
through the bottom fitting and then toward the terminal block.
3.
Use the information in the next figure (Figure 2-22) to connect the input wires in the
terminal block on the controller board of the SDT16-GSM, SDT16-ORB, or SDT16-SAT.
4.
If the input device supports wiring for alarm monitoring, connect input wires in the
Chan 1
and
Gnd
terminal blocks on the controller board of the SDT16-GSM or,
Ch 1
and
Gnd
on
the SDT16-ORB and SDT16-SAT. Refer to Figure 2-19 on page 52.
5.
If the input device requires a handshake signal for communication with the unit, connect the
input wire to the
DTR
terminal on the controller board.
6.
Connect the shield drain wire to a suitable ground point at the source of the signal; do not
ground at the unit. See
Ground Connection on page 13 for more information.
7.
Connect the input wires from the unit to the output terminals of your device.
W
ARNING
:
If the wires are to be buried or covered, then conduit must be used to protect
the wires.
8.
Plug the battery cable in the
Battery
connector on the controller board of the unit.
I
MPORTANT
:
If you are working with the SDT16-GSM, make sure the battery cable does
not route across the top of the controller board and radio. This will ensure the battery
voltage does not interfere with radio transmission signals. For information about how to
route the battery cable, see
Routing the Battery Cable (GSM Only) on page 10.