Linear XR-4 manual

XR-4 WARNING: THIS

1. PRODUCT DESCRIPTION 2. OPEN RECEIVER

	PRODUCT SHOULD NOT
	BE USED IN LIFE
XTENDED RANGE	SAFETY APPLICATIONS.
	FCC Rules allow
	unlicensed high-power
FOUR CHANNEL	transmissions at or near
	the operating frequency
SUPERVISED	of this product which
	may interfere with, or
	even disable, normal
STATIONARY
	operation of this radio
	device.
RECEIVER

For Use With Linear’s

XR Series Xtended

Range Transmitters

Installation

Instructions

(760) 438-7000 • FAX (760) 438-7043USA & Canada (800) 421-1587 & (800) 392-0123Toll Free FAX (800) 468-1340www.linearcorp.com

Linear’s Xtended Range FM receivers and transmitters are designed for use in various wireless remote control applications. When the Model XR-4 receiver detects a signal from its companion transmitter, it will verify the digital code, activate the correct output channel, and trigger the remote device connected to the receiver.

The XR-4 receiver has full supervision capabilities. If the “status” option is selected, the receiver expects hourly status signals from its transmitter. If these signals cease, the receiver will indicate trouble by activating its status output after four hours. Contact supervision allows the receiver’s outputs to follow the transmitter’s inputs, each output staying activated as long as each transmitter input is activated. Alternately, an “auto-restore” option can be selected in the transmitter, causing a momentary receiver output each time any transmitter input is activated. If the transmitter sends a low battery signal, the receiver’s low battery output will activate.

Power for the XR-4 receiver can come from an external 12 VDC power supply (Linear Model T-1224DC) or from a 12-volt battery. A diode protects the unit from reverse power polarity. The XR-4 draws about 30 mA standby, and about 190 mA when all outputs are active. The receiver outputs provide isolated N/O and N/C relay contacts for each channel capable of switching a maximum of 1 Amp @ 32 VDC each. The low battery and status outputs are solid state and are capable of switching up to 50 mA @ 20 VDC to ground.

Two antennas (sold separately) are available for the XR-4. The Model ANT-1A is an 8-inch “rubber duck” antenna for short range applications (less than 1 mile). The ANT-1A requires a CON-180A (straight) connector to mate the antenna to the transmitter. For a right angle antenna, use the CON-180A plus the CON-90A.The Model ANT-2 is a 3-foot whip antenna for use in long range or difficult installations where more range from the XR-4 is required. A common 9-foot 1/4 wave CB whip antenna can also be used with the XR-4 for maximum range.

Two 8-position switches set the unit’s system code. This code must be matched in the XR-4’s transmitter(s). There are 65,536 different system codes possible. The 4-position option switch selects the status supervision option for each channel.

The receiver is housed in a rugged weather-resistant metal enclosure with a sturdy SO-239 antenna connector and a water-tight wiring strain relief bushing. Two indicators are visible through a window on the case. The green power indicator lights when the receiver has power. During reception, the red RF indicator lights. Two internal test points are provided for signal strength and audio monitoring.

REFERENCE CARD FITS IN 1ST SLOTBOARD FITS IN 3RD SLOT UPEND CAP STAYSATTACHED TOTHE CIRCUITBOARD

REMOVE FOUR CASE SCREWS AND SLIDE OUT CIRCUIT BOARD

CASE SCREWS

3. COMPONENT LOCATIONS

4. INSTALLATION TIPS

5. MOUNT RECEIVER CASE

ANTENNACONNECTOR

(HIDDEN)	TEST POINTS
SYSTEM CODE	SIGNAL
	LEVEL
SWITCHES
	AUDIO
SWITCH "B"	OUTPUT
SWITCH "A"

USE ANT-1A ANTENNA FOR SHORT RANGE APPLICATIONS (LESS THAN 1 MILE)

RIGHT ANGLE CONNECTOR (CON-90A)

8-INCHANT-1A STRAIGHT-THRUANTENNACONNECTOR (CON-180A)

3-FOOTANT-2ANTENNAUNIVERSAL

MOUNTING BRACKET

18-FOOT CABLE

USE ANT-2 ANTENNA FOR MAXIMUM RANGE OR DIFFICULT APPLICATIONS

If using the ANT-1A antenna: For best range mount the XT/XR unit to a metal plate with a minimum size of 12" x 12". The ANT-1A antenna should extend above the mounting plate and be free of obstructions. If the ANT-1A antenna cannot be mounted in the open, consider using an extension coaxial cable with PL-259 connectors to move the antenna’s location.

The XT/XR series of radios operate in the 27 MHz Citizens Band (CB) and may use any CB antennas or CB antenna accessories. Antennas, PL-259 extension cables and other adapters are available at Radio Shack® or other electronics stores.

MOUNT UNIT WITH TWO BOTTOM SCREWS (DON'T INSTALL TOP

GROUND

STATUSSWITCH

RF SIGNAL INDICATOR

(RED)POWERINDICATOR(GREEN)

GOOD INSTALLATION BAD INSTALLATION

LINE-OF-SIGHTBETWEEN THETRANSMITTER ANDRECEIVER ANTENNASWILL PROVIDE THEBEST RANGEANTENNAS ARE MOUNTEDVERTICALLY, ON HIGH POINTSOF BUILDINGSTRANSMITTING THROUGHSTRUCTURES, METAL AND

GEOGRAPHIC OBSTACLES WILL

REDUCE RADIO RANGE

SCREWS UNTIL WIRING IS COMPLETE)

POWER & OUTPUT TERMINAL BLOCK

MOUNT ANTENNA AS HIGH AS POSSIBLE

	3'
AT LEAST 9 FEET
ABOVE GROUND IS	WHEN MOUNTING ON
RECOMMENDED	THE SIDE OF A
	STRUCTURE, USE A
	MINIMUM OF A 3-FOOT
	SPACER TO DISTANCE
	THE ANTENNA FROM
	THE STRUCTURE

GOOD ANTENNAS NEED GOOD GROUNDS

METAL ROOF	OK
	FAIR
9 FEET	POOR

IDEALLY, A GROUND PLANE WITH A RADIUSOF NINE FEET MINIMUMIS DESIREDANTENNA LOCATION ISOF PRIMARY CONCERN

UNIT SHOULD BE MOUNTED IN SHELTERED LOCATION WITH ACCESS TO ANTENNA CO-AX AND POWER/SIGNAL WIRES