Linear DXR-702EC Owner's Manual

DXR-702/EC

TWO­CHANNEL
DIGITAL
RECEIVER

Installation
Instructions

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DXR-702 FEATURES TERMINAL DETAILS CUTTING RELAY OPTION JUMPERS

PRODUCT DESCRIPTION

The DXR-702/EC 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

BY

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
configurations. When the relays are set to latch, the receiver
outputs will follow the open/close door status sent from
DXT-31/EC 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 field 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 15 cm wire whip antenna screws into the receiver’s antenna
connector. Optionally, a remote antenna (Linear EXA-1000/EC or
EXA-2000/EC) 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
flashes to count the number of transmitters in memory.

RELAY OPTIONS EFFECT BOTH RELAYS

ANTENNA
CONNECTOR

CHANNEL 2
PROGRAM
BUTTON

PROGRAM
INDICATOR

CHANNEL 1
PROGRAM
BUTTON

INSTALLATION TIPS MOUNTING RECEIVER ANTENNA INSTALLATION

RIGHT

CENTRALLY LOCATE RECEIVER

OR ANTENNA

RCVR

BASEMENT

MOUNT RECEIVER OR ANTENNA AS

HIGH ABOVE EARTH LEVEL AS POSSIBLE

RIGHT

CONSTRUCTION MATERIALS WILL EFFECT RADIO RANGE

90% - 100%

OF FULL POWER

WALLBOARD AND

WOOD STUDS

OF FULL POWER

LIGHT CONCRETE

POWER AND
RELAY
TERMINALS

TRANSMITTERS AT THE OTHER END OF

BELOW EARTH LEVEL WILL IMPAIR RANGE

65% - 95%

OR BRICK

WRONG!

HOUSE MIGHT BE TOO FAR AWAY

BASEMENT

WRONG!

LOCATING A RECEIVER OR ANTENNA

10% - 70%

OF FULL POWER

CONCRETE WITH STEEL

REINFORCEMENT OR

METAL LATH AND PLASTER

RCVR

2

1

POWER

INPUT

11-17 VDC
12-16 VAC

USE SCREWS TO
ATTACH THE
MOUNTING
BRACKET

SNAP RECEIVER
ONTO BRACKET

BRACKET CAN
MOUNT IN THREE
PLACES

LOCATION 1

IF RELAY OPTION IS GOING TO

8

7

6

5

4

3

CHANNEL 2

RELAY

NORMALLY
CLOSED

BE CHANGED: REMOVE POWER,
CUT JUMPERS, APPLY POWER,
ERASE MEMORY, THEN RE­PROGRAM ALL TRANSMITTERS

COMMON

NORMALLY
OPEN

CHANNEL 1

RELAY

NORMALLY
CLOSED

COMMON

NORMALLY
OPEN

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

CORNER HOLE IS
SHARED FOR
LOCATIONS 2 & 3

LOCATION 2

LOCATION 3

NOTE:

OPEN CASE
WITH SMALL
SCREWDRIVER

RELAY OPTION JUMPER WJ1 JUMPER WJ2

4 SECOND LATCH SOLID SOLID

1 SECOND LATCH

LATCH UNTIL RESET ++

TOGGLE ON AND OFF ++

BE SURE POWER IS OFF WHEN CUTTING JUMPERS

++ CAN BE RESET BY PUSHING THE PROGRAM BUTTON ONCE

TO MONITOR DOOR OPEN/CLOSE STATUS WITH DXT-31/EC TRANSMITTERS,

RELAY ON = DOOR OPEN RELAY OFF = DOOR CLOSED

OTHER TYPES OF TRANSMITTERS WILL LATCH RELAYS ON UNTIL RESET

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.

SET RELAYS TO LATCH

UP TO 8 METERS
OF RG-59 CABLE
ALLOWED

TERMINALS

JUMPER

WJ1

ANTENNA

RECEIVER CIRCUIT BOARD

CUT SOLID

SOLID CUT

CUT CUT

NOTE:

MODEL
EXA-1000/EC
ANTENNA

SCREW LOCAL
WHIP ANTENNA
ONTO RECEIVER

- OR -

USE REMOTE
ANTENNA

JUMPER

WJ2

TERMINAL CONNECTIONS

1. PRESS PROGRAM BUTTON FOR THE
DESIRED CHANNEL AND HOLD FOR ABOUT
TWO SECONDS UNTIL INDICATOR LIGHTS
THEN RELEASE.

2. COUNT THE NUMBER OF INDICATOR BLINKS,
THIS IS THE TOTAL NUMBER OF
TRANSMITTERS PROGRAMMED INTO THAT
CHANNEL.

PUSH UNTIL
INDICATOR LIGHTS

NOTE: DO NOT CONTINUE TO PRESS
BUTTON OR MEMORY WILL BE ERASED

DXR-702 TERMINALS DXR-702 TERMINALS

COM

N.O.

COM

N.O.

N.C.

N.C.

NOTE:

LATCHING MODE
ALLOWS PANEL

TO SHOW DXT-31
DOOR STATUS

COM

N.O.

N.O.

N.C.

COM

N.C.

NOTE:

CHANNEL 2 MUST

BE EMPTY TO
REPORT LOW

BATTERY

DXR-702 TERMINALS

COM

N.O.

N.O.

N.C.

COM

N.C.

NOTE:

TRANSMITTERS

WILL AUTO
RESTORE AFTER

1 SECOND

AUX.

POWER

ALARM PANEL CONNECTION WITH DOOR STATUS

RADIO

POWER

XFMR

ALARM

LOOP 1

N.C. OR N.O.

LATCHING RELAY OPTION

DXR-702 TERMINALS DXR-702 TERMINALS

COM

N.O.

AUX.

POWER

XFMR

ALARM

LOOP 2

N.C. OR N.O.

COM

N.O.

N.C.

N.C.

ACCESS CONTROL CONNECTION

4 SECOND RELAY OPTION

BUTTON AND INDICATOR FUNCTIONS

FUNCTION PROGRAM BUTTONS

NORMAL
OPERATION

PROGRAMMING
MEMORY

CHECKING
MEMORY

ERASING
MEMORY

RELEASES LATCHED
RELAY FOR
CHANNEL 1 OR 2

PRESS AND
RELEASE FOR
CHANNEL 1 OR 2

PRESS FOR
CHANNEL 1 OR 2
UNTIL BLINK AND
RELEASE

FOR CHANNEL 1 OR
2, PRESS AND HOLD
THROUGH THE
COUNT THEN HOLD
FOR 5 SECONDS
MORE

BUZZER

DOOR
STRIKE

PROGRAM

INDICATOR

LIGHTS WHEN
TRANSMITTER IS
RECEIVED,
FLASHES WHEN
INTERFERENCE IS
RECEIVED

LIGHTS FOR 3
SECONDS FOR
PROGRAMMING

BLINKS THE
NUMBER OF
TRANSMITTERS IN
CHANNEL
MEMORY

AFTER BLINKING
COUNT, A PAUSE
THEN A SINGLE
BLINK AS
MEMORY IS
ERASED (DOUBLE
BLINK ON
CHANNEL 2)

AUX.

POWER

ALARM

LOOP

N.C. OR N.O.

TROUBLE

LOOP

N.C. OR N.O.

ALARM PANEL CONNECTION WITH LOW BATTERY REPORTING

LATCHING RELAY OPTION

COM

N.O.

POWER
SUPPLY

EXTERNAL RELAY CONNECTION

TOGGLE RELAY OPTION

COM

N.O.

N.C.

N.C.

EXTERNAL
RELAY 2

EXTERNAL
RELAY 1

PROGRAMMING MEMORY CHECKING MEMORY

1. PRESS AND RELEASE
PROGRAM BUTTON FOR THE
DESIRED CHANNEL.

2. PROGRAM INDICATOR WILL
LIGHT FOR 3 SECONDS IF
THERE IS ROOM IN THAT
CHANNEL'S MEMORY FOR
ANOTHER TRANSMITTER
(32 TRANSMITTERS MAXIMUM
TOTAL ALLOWED BETWEEN
BOTH CHANNELS IN THE
RECEIVER).

3. WITHIN 3 SECONDS, SEND
SIGNAL FROM TRANSMITTER,
PROGRAM INDICATOR WILL
FLICKER AS SIGNAL IS
RECEIVED.

4. REPEAT THE ABOVE THREE
STEPS FOR EACH
ADDITIONAL TRANSMITTER.

MULTI-CHANNEL

TRANSMITTER NOTE:

EACH RECEIVER CHANNEL CAN
ONLY BE PROGRAMMED TO
ACTIVATE FROM A SINGLE
BUTTON ON A MULTI-CHANNEL
TRANSMITTER. LEARNING THE
SAME BUTTON INTO BOTH
CHANNELS ACTIVATES CHANNEL
ONE ONLY.

AFTER PUSHING THE RECEIVER'S
PROGRAMMING BUTTON, YOU ONLY HAVE
3 SECONDS TO SEND A SIGNAL BEFORE
PROGRAMMING MODE STOPS

LOAD

LOAD

AUX.

POWER

ALARM

LOOP 1

N.C. OR N.O.

ALARM

LOOP 2

N.C. OR N.O.

ALARM PANEL CONNECTION FOR PANIC BUTTONS

1 SECOND RELAY OPTION

DXR-702 TERMINALS

COM

N.O.

POWER
SUPPLY

SECURITY CAMERA CONNECTION

LATCHING RELAY OPTION

COM

N.O.

N.C.

N.C.

STILL

CAMERA

CAMERA

& VCR

SYSTEM TESTING ERASING MEMORY INTERNATIONAL WARRANTY

1. ACTIVATE EACH TRANSMITTER,
ONE AT AT TIME.

2. LISTEN FOR RELAY CLICK IN
THE RECEIVER.

3. VERIFY THAT THE DEVICE CONNECTED
TO THE RECEIVER RESPONDS AND THAT
THE PROPER CHANNEL ACTIVATES.

4. TEST PORTABLE TRANSMITTERS IN
VARIOUS LOCATIONS TO DETERMINE
SYSTEM PERFORMANCE.

1. PRESS PROGRAM BUTTON
FOR THE CHANNEL TO ERASE
AND CONTINUE TO HOLD IT
THROUGH THE COUNT OF THE
TRANSMITTERS.

2. CONTINUE TO HOLD THE
BUTTON AFTER THE COUNT
UNTIL THE INDICATOR BLINKS
ONCE FOR CHANNEL ONE,
TWICE FOR CHANNEL TWO
(ABOUT FIVE SECONDS
AFTER THE COUNT).

3. ALL TRANSMITTERS
PROGRAMMED INTO
THAT CHANNEL
WILL BE ERASED.

PUSH AND HOLD BUTTON
FOR FIVE SECONDS AFTER
THE TRANSMITTER COUNT

R&TTE VAEE 27840, EMC, SFT, ETS

Linear Corporation declares that the apparatus DXR-702/EC
complies with the essential requirements and other relevant
provisions of Directive 1995/5/EC.

This Linear product is warranted against defects in material and workmanship for twelve (12)
months. The Warranty Expiration Date is labeled on the product. This warranty extends only
to wholesale customers who buy direct from Linear or through Linear’s normal distribution
channels. Linear does not warrant this product to consumers. Consumers should inquire
from their selling dealer as to the nature of the dealer’s warranty, if any. There are no obligations

or liabilities on the part of Linear Corporation for consequential damages arising out of
or in connection with use or performance of this product or other indirect damages with
respect to loss of prop erty, revenue, or pr ofit, or cost of removal, installation, or
reinstallation. All implied warranties, including implied warranties for merchantability and
implied warranties for fitness, are valid only until Warranty Expiration D ate as labeled on
the product. This Linear Corporation Warranty is in lieu of all other warranties expr ess or
implied. For warranty service on Linear equipment return pr oduct, at sender’s expense
to:

Linear Hong Kong 19/F Hounor Industrial Centre, 6 Sun Yip StreetChai Wan, Hong Kong
Attention: Repairs Department
REPAIRS POLICY
Charges will be made for equipment that is not in warranty, shows customer abuse, or is damaged
by the effects of lightning, water, fire, or other abnormal happenings.
Customer’s equipment sent in for repair may be repaired or replaced with new or remanufactured
equipment at Linear’s discretion.
The customer is always responsible for shipping and handling charges to the repairs facility.
Linear will pay return shipping and handling charges on “in warranty” products shipped back to
the customer. The customer will be billed for the return shipping and handling charges on “out of
warranty” products.
There will be a 50% expedite fee for any express requests.
The International Sales Manager must be notified prior to the return of product to Linear. All
international returns must have an International Repair Authorization number (IR A#). The number
must be marked on all packages. Failure to do so will cause delays in processing.
IMPORTANT !!!
Linear radio controls provide a reliable communications link and fill an important need in portable
wireless signaling. However, there are some limitations which must be observed. The radios are
required to comply with local rules and regulations as radio devices. A s such, they have limited
transmitter power and therefore limited range.
A receiver cannot respond to more than one transmitted signal at a time and may be blocked by
radio signals that occur on or near their operating frequencies, regardless of code settings.
Changes or modifications to the device may void regulatory compliance. Infrequently used radio
links should be tested regularly to protect against undetected interference or fault. A general
knowledge of radio and its vagaries should be gained prior to acting as a wholesale distributor
or dealer, and these facts should be communicated to the ultimate users.

Copyright © 2002 Linear Corporation 220095 A