DXR-702
TWO-
CHANNEL
DIGITAL
RECEIVER
Installation
Instructions
PRODUCT DESCRIPTION
The DXR-702 is a two-channel digital receiver with two isolated
relay outputs designed for use with Linear’s DX Format
transmitters. This receiver can be used in a variety of remote
control applications. When the receiver detects a signal from
a transmitter programmed into its memory, the appropriate
relay output activates. The relays have four optional output
congurations. When the relays are set to latch, the receiver
outputs will follow the open/close door status sent from DXT-31
door/window transmitters.
In a typical installation, the receiver is connected to an alarm
control panel, door strike, camera, high current relay or some
other devices. Transmitters are used to activate or control the
devices. The receiver should be mounted with the supplied
mounting bracket indoors or inside a weather resistant
non-metallic housing.
The digital DX code format features over a million possible
codes. The DX transmitters are precoded at the factory to
unique codes, so no eld coding is required. For versatility,
any transmitter can be programmed into any receiver channel.
Receivers must be programmed to the transmitter’s code before
system testing and operation. Up to 32 transmitters maximum
can be programmed into the receiver. The transmitters can
be split in any number between the two receiver channels.
Receiver channel two is a special channel. If channel two
memory is empty, with no transmitters programmed into it, it
will report low battery signals from any channel one transmitters
capable of sending them. When a low battery transmission is
received, the channel two relay will latch, regardless of how
the option jumpers are set. The relay will remain engaged until
the channel two program button is pressed. The low transmitter
batteries should be replaced before resetting the relay.
The unit can be powered from a 11-17 VDC or 12-16 VAC power
source. The relays’ normally open and normally closed contacts
can switch up to 1 amp at 24 volts AC/DC.
Cutting jumpers select how the relays activate. Four settings
are possible. Both relays will function with the same option. The
factory setting causes the relays to engage for four seconds
each activation. Optionally, the relays can be set to engage for
one second, toggle on with one activation then off with the next,
or latch engaged for door status or until reset by pressing the
program button.
A nine-inch wire whip antenna screws into the receiver’s antenna
connector. Optionally, a remote antenna (Linear EXA-1000) can
be connected to the receiver for greater radio range. The red
program indicator lights during RF reception. The installer can
verify that signals are being sent from transmitters and diagnose
interference problems by viewing the indicator. The indicator also
lights during memory programming/erasing and ashes to count
the number of transmitters in memory.
DXR-702 FEATURES TERMINAL DETAILS CUTTING OPTION JUMPERS
INSTALLATION TIPS MOUNTING RECEIVER ANTENNA INSTALLATION
(760) 438-7000 • FAX (760) 438-7043
USA & Canada (800) 421-1587 & (800) 392-0123
Toll Free FAX (800) 468-1340
www.linearcorp.com
ANTENNA
CONNECTOR
CHANNEL 2
PROGRAM
BUTTON
PROGRAM
INDICATOR
CHANNEL 1
PROGRAM
BUTTON
POWER AND
RELAY
TERMINALS
CHANNEL 2
RELAY
NORMALLY
CLOSED
COMMON
NORMALLY
OPEN
CHANNEL 1
RELAY
NORMALLY
CLOSED
COMMON
NORMALLY
OPEN
POWER
INPUT
11-17 VDC
12-16 VAC
1
2
3
4
5
6
7
8
WRONG!
RIGHT
CENTRALLY LOCATE RECEIVER
OR ANTENNA
TRANSMITTERS AT THE OTHER END OF
HOUSE MIGHT BE TOO FAR AWAY
BASEMENT
BASEMENT
RCVR
RCVR
RIGHT
WRONG!
LOCATING A RECEIVER OR ANTENNA
BELOW EARTH LEVEL WILL IMPAIR RANGE
MOUNT RECEIVER OR ANTENNA AS
HIGH ABOVE EARTH LEVEL AS POSSIBLE
90% - 100%
OF FULL POWE
R
65% - 95
%
OF FULL POWE
R
10% - 70
%
OF FULL POWE
R
WALLBOARD AND
WOOD STUD
S
CONCRETE WITH STEEL
REINFORCEMENT OR
METAL LATH AND PLASTE
R
LIGHT CONCRETE
OR BRIC
K
CONSTRUCTION MATERIALS WILL EFFECT RADIO RANGE
BRACKET CAN
MOUNT IN THREE
PLACES
LOCATION
1
LOCATION
2
LOCATION
3
CORNER HOLE IS
SHARED FOR
LOCATIONS 2 &
3
USE SCREWS TO
ATTACH THE
MOUNTING
BRACKET
SNAP RECEIVER
ONTO BRACKET
MOUNTING NOTES:
1. WHEN USING THE LOCAL WHIP
ANTENNA, MOUNT RECEIVER AS HIGH
AS POSSIBLE FOR BEST RADIO RANGE
2. WHEN USING THE LOCAL WHIP
ANTENNA, KEEP RECEIVER AWAY
FROM METAL OBJECTS THAT CAN
DECREASE RADIO RANGE BY
SHIELDING THE SIGNAL
3. IN ALL INSTALLATIONS, KEEP
RECEIVER AND ANTENNA AWAY FROM
MOTORS, FANS AND OTHER
ELECTRICAL DEVICES THAT MAY
CAUSE INTERFERENCE AND REDUCE
RADIO RANGE
SCREW LOCAL
WHIP ANTENNA
ONTO RECEIVER
- OR -
USE REMOTE
ANTENNA
UP TO 25 FEET
OF RG-59 CABL
E
ALLOWED
MODEL
EXA-1000
ANTENNA
ANTENNA NOTES:
1. ANTENNA SHOULD BE MOUNTED
AS HIGH AS PRACTICAL.
2. KEEP ANTENNA AWAY FROM
ELECTRICAL INTERFERENCE
SOURCES.
3. CENTRALLY LOCATE ANTENNA
AMONG THE TRANSMITTERS.
RELAY OPTIONS EFFECT BOTH RELAYS
NOTE:
TO MONITOR DOOR OPEN/CLOSE STATUS WITH DXT-31 TRANSMITTERS,
SET RELAYS TO LATC
H
RELAY ON = DOOR OPEN RELAY OFF = DOOR CLOSED
OTHER TYPES OF TRANSMITTERS WILL LATCH RELAYS ON UNTIL RESET
RECEIVER CIRCUIT BOARD
TERMINALS
JUMPER
WJ1
JUMPER
WJ2
ANTENNA
OPEN CASE
WITH SMAL
L
SCREWDRIVER
NOTE:
IF RELAY OPTION IS GOING TO
BE CHANGED: REMOVE POWER,
CUT JUMPERS, APPLY POWER,
ERASE MEMORY, THEN RE
-
PROGRAM ALL TRANSMITTERS
RELAY OPTION JUMPER WJ1 JUMPER WJ2
1 SECOND LATCH
LATCH UNTIL RESET ++
TOGGLE ON AND OFF ++
4 SECOND LATCH
SOLID SOLID
CUT SOLI
D
SOLID CUT
CUT CUT
BE SURE POWER IS OFF WHEN CUTTING JUMPERS
++ CAN BE RESET BY PUSHING THE PROGRAM BUTTON ONCE
PRINTER’S INSTRUCTIONS:
INSTR,INSTL,DXR-702A - LINEAR P/N: 220464 A - INK: BLACK - MATERIAL: 20 LB. MEAD BOND - SIZE: 11.000” X 8.500” - SCALE: 1-1 - SIDE 1 OF 2
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