DMP Electronics 708 User manual

708 BUS EXTENDER MODULES
Installation Guide
DESCRIPTION
RED
1 2 3 4 5 6
YEL GRN BLK
CONNECT
TO PANEL
MODEL 708
RED
1 2 3 4 5 6
YEL GRN BLK
CONNECT
TO DEVICES
MODEL 708
Model708Bus Extender Modules
allow you to increase the length
of LX‑Bus or Keypad Bus wiring
to a maximum of4,000ft while
providing immunity to wire noise.
Use708Modules in applications
such as long wire runs, noisy
environments, or where the bus run
is bundled with other wires, such as
telephone company wire.
The included pair of708modules
connect between the panel and
LX‑Bus or Keypad Bus devices.
These modules are referred
to as the Panel Moduleand
DevicesModulerespectively.
Compatibility
• All DMP XT and XR Series panels
• All DMP LX‑Bus and Keypad Bus
devices
What is Included?
• One pair of708Bus Extender
Modules in Universal Housings
• Hardware pack
1MOUNT THE MODULES
The708comes in a high‑impact plastic housing that you can
mount directly to a wall, backboard, or other flat surface. For easy
installation, the back of the housing contains multiple holes that
allow you to mount themodule on a single‑gang switch box or
ring. Themodule can also be mounted in a DMP enclosure using
the standard3‑hole mounting pattern. Refer to Figure 2and
Figure 3as needed during installation.
1. Hold the plastic standos against the inside of the enclosure
side wall.
2. Insert the included Phillips head screws from the outside of
the enclosure into the standos. Tighten the screws.
3. Carefully snap the module onto the standos.
WIRE THE PANEL MODULE
2Use18to22AWG wire to connect thePanel Moduledirectly to
the Keypad Bus or use a dual‑ended4‑wire harness to connect
directly to the LX‑Bus. This connection allows the module to
communicate with the panel and receive12VDC power. For more
information about wiring, refer to Wiring Specifications. Refer to
Figure 4andFigure 5when wiring themodule.
Caution: To avoid potential equipment damage from lightning
strikes, do not run LX‑Bus, Keypad Bus, or708bus wires
underground.
Connect to the LX‑Bus
At the Panel Module, connect wires to the RED, YEL, GRN, and
BLK terminals. Connect the red, yellow, green, and black wires to
the corresponding4‑wire harness leads. Connect the other end of
the harness to the LX‑Bus header.
Connect to the Keypad Bus
At the Panel Module, connect wires to the RED, YEL, GRN, and
BLK terminals. Connect the red, yellow, green, and black wires to
panel Terminal7, 8, 9, and10respectively.
Figure 1: 708 Modules
Figure 2: Mounting Hole Locations Figure 3: Stando Installation
Mounting
holes

2 708 INSTALLATION GUIDE | DIGITAL MONITORING PRODUCTS
WIRE THE DEVICES MODULE
Observe polarity and connect a12VDC power supply, such as a Model505‑12, to Terminal1 (positive) and
Terminal6 (negative). Connect RED, YEL, GRN, and BLK Terminals from the Devices Moduleto devices
compatible with LX‑Bus or Keypad Bus connections. Refer to the appropriate module installation guide as
needed. For more information, refer to Figure 4andFigure 5.
Note: The modules should be powered by a 24‑hour power source that cannot be interrupted by a sensor
reset. It is not necessary to wire the negative power supply wire in common with the panel Terminal10
(black) wire.
4
3Use18‑24AWG straight, shielded, or twisted pair wire. Maximum wiring distance between the two modules
is4,000ft. Connect Terminal2,3,4,and5 from the Panel Moduleto the corresponding terminals on the
Devices Module. For more information, refer to Figure 4.
Note: The connection between the two modules is for data transfer only. Do not connect any devices or
power sources between the two modules.
CONNECT THE MODULES
RED YEL GRN BLK
1 2 3 4 5 6
CONNECT
TO PANEL
MODEL 708
W2
W1
1 2 3 4 5 6
MODEL 708
W4
W3
Devices Module
Panel Module
Balance Jumper
Balance Jumper
CONNECT
TO DEVICES
To LX-Bus or
Keypad Bus
To Devices
To 12 VDC
Power Supply
RED YEL GRN BLK
RED YEL GRN BLK
Balance Jumper
Balance Jumpers
RED
BLACK
Max 4,000 ft
Figure 4: Connecting the Modules

708 INSTALLATION GUIDE | DIGITAL MONITORING PRODUCTS 3
Figure 5: Full Wiring Diagram
AC
1234 5 6 7 810 11 12 13 14 15 16 17 18
9
+B BELL GND SMK GND
RED YEL GRN BLK Z1 Z2 Z3 Z4 Z5
20
Z6
AC -B GND
19
GND
21
Z7
22
GND
23
Z8
24
Z9
25
Z10+
26
Z10-
PROG
LX500
LX600
LX700
LX800
LX900
RED YEL GRN BLK
1 2 3 4 5 6
CONNECT
TO PANEL
MODEL 708
W2
W1
1 2 3 4 5 6
MODEL 708
LX-BUS
RED
RED
BLACK
RED
BLACK
BLACK
W4
W3
Device 708
505-12 Power Supply
LX-Bus or
Keypad Bus
Compatible
Device
Panel 708
PANEL
CONNECT
TO DEVICES
RED YEL GRN BLK
RED YEL GRN BLK
DC
Max 4,000 ft

Designed, engineered, and
manufactured in Springfield, MO
using U.S. and global components.
LT-0585 20015
708 BUS EXTENDER
MODULES
Specifications
Operating Voltage 12VDC
Operating Current
Panel 708 10mA
Device 708 10mA
Dimensions 4.50” W x 2.75” H x 1.75” D
11.43 cm W x 6.99 cm H x 4.45 cm D
Maximum Distance 4,000 ft between the two modules
Compatibility
All DMP XT and XR Series panels
All DMP LX-Bus and Keypad Bus devices
RED
1 2 3 4 5 6
YEL GRN BLK
CONNECT
TO PANEL
MODEL 708
RED
1 2 3 4 5 6
YEL GRN BLK
CONNECT
TO DEVICES
MODEL 708
INTRUSION • FIRE• ACCESS• NETWORKS
2500 North Partnership Boulevard
Springfield, Missouri 65803-8877
800.641.4282 | DMP.com
ADDITIONAL INFORMATION
Wiring Specifications
DMP recommends using 18 or 22 AWG for all LX‑Bus and Keypad Bus connections. The maximum wire distance between
any module and the DMP Keypad Bus or LX‑Bus circuit is 10 feet. To increase the wiring distance, install an auxiliary
power supply, such as a DMP Model 505‑12. Maximum voltage drop between a panel or auxiliary power supply and any
device is 2.0 VDC. If the voltage at any device is less than the required level, add an auxiliary power supply at the end of
the circuit.
To maintain auxiliary power integrity when using 22‑gauge wire on Keypad Bus circuits, do not exceed 500 feet. When
using 18‑gauge wire, do not exceed 1,000 feet. Maximum distance for any bus circuit is 2,500 feet regardless of wire
gauge. Each 2,500 foot bus circuit supports a maximum of 40 LX‑Bus devices.
For additional information refer to the LX‑Bus/Keypad Bus Wiring Application Note (LT‑2031) and the 710 Bus Splitter/
Repeater Module Installation Guide (LT‑0310).
Balance the708Buses
Each708has two balance jumpers that ensure communication is balanced between the two modules. Refer to
Figure 4for balance jumper locations. Before changing module jumper settings, test the LX‑Bus or Keypad Bus to ensure
proper system communication.
For a Panel Moduleconnected to the LX‑Bus, run the Diagnostics LX‑Bus test to verify communication. For more
information about testing the LX‑Bus, refer to the Diagnostics Function section in the appropriate panel programming
guide.
For a Panel Moduleconnected to the Keypad Bus, ensure other Keypad Bus devices are working properly and check all
Panel Modulewiring connections.
If test results indicate faulty708communication, change the jumper settings as follows.
Install the jumper across the W1header on the Panel Module, then install the jumper across the W3header on the
Devices Module. If communication is still faulty, remove all four jumpers from the708modules.
Factory Jumper Settings
The708modules come installed from the factory with the jumper across the W2header on the Panel Moduleand across
the W4header on the Devices Module. Jumpers are not installed across the W1header on the Panel Module or the
W3header on the Devices Module.