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Uniden LRD 747 - page 1
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Uniden LRD 747 - page 2
C:...LRD747-757covers.vp Tue Oct 05 12:10:02 1999 Color profile: Disabled Composite Default screen ...
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Uniden LRD 747 - page 3
1 CONTENTS I ntroduction .................................2 Feature Highlights ...............................2 Included with Your Radar Detector ..................3 Speed Detection ..............................4 Speed Detection Systems ..........................4 Radar .........................................4 Laser ............................. ...
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Uniden LRD 747 - page 4
INTRODUCTION W elcome to the world of sophisticated, early w arning laser/radar detection. Y ou have pur chased one of the most advanced laser/radar detectors available. The LRD 7 47/LRD 757 is a completely integrated laser/radar detector . It responds to the X -, K-, and Ka-SuperWideband radar guns in use today and also pro vides 360° detection o ...
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Uniden LRD 747 - page 5
INCLUDED WITH Y OUR R ADAR DETECTOR 3 INTRODUCTION Ref erence Guide Windshield Clip njdfjnjnjfnjfjn jnkjnjksnkjsnfj dfksfmkm kfmkmkmlf sfkkmmfmsmsm kkoioionksnkln mmkmkkl skdmkmkm sdmkmfmmmk mdmklkkkml mmkkllmmk njdfjnjnjfnjfjn jnkjnjksnkjsnfj dfksfmkm kfmkmkmlf sfkkmmfmsmsm kkoioionksnkln mmkmkkl skdmkmkm sdmkmfmmmk mdmklkkkml mmkkllmmk njdfjnjn ...
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Uniden LRD 747 - page 6
SPEED DETECTION SYSTEMS A speed detection device (often called a radar gun) sends out either a micro wave signal or beam of light. When this signal reaches its targ et, par t of the signal is reflected or bounced back tow ard the emitting gun. The time required f or the signal to leave the gun, bounce off an object, and return is used to determine ...
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Uniden LRD 747 - page 7
▼ L ASER The Laser Speed Detection System, also called LID AR (for Light D etection and Ranging), uses a laser gun that emits infrared light pulses just outside the spectrum of visible light. Each reflected pulse measures the speed of the object coming to ward or going away fr om the laser gun. Unlik e radar , the laser gun emits a very narrow be ...
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Uniden LRD 747 - page 8
CONTROLS AND FUN CTIONS 1 . Clip Release — Press the clip release button to remove the LRD 747/LRD 757 from the windshield mounting clip. 2. Rear and Side Laser Detector Lense — For rear and side detection of laser signals. 3. Press the city button to help reduce X-band false alarms while driving in the city. When you turn on the City Mode, the ...
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Uniden LRD 747 - page 9
LED P ANEL D1) X-Band Signal Indicato r—Ag r e e nL E D lights and blinks to indicate the presence of an X -band radar signal. The blink rate increases as the radar source g ets closer. A distinct audio alert is also heard. D2) K-Band Indicator — An amber (orange) LED lights and blinks to indicate the presence of a K-band radar . The blink rate ...
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Uniden LRD 747 - page 10
INSTALLATION The LRD 7 47/LRD 757 uses a highly sensitive horn-type antenna and IR laser sensor to receiv e laser/radar signals. Its sensitivity and range depend on the method of installation and the dir ection of the antenna/sensor in relation to the signal source. The inherent nature of radar w aves mak es them reflect of f metallic surfaces. Thi ...
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Uniden LRD 747 - page 11
HELPFUL TIPS The antenna and the forward looking sensor ar e located behind the rear panel of the unit, (and the rear - and side-looking sensors are located on top of the unit), directly behind the mode selection keys. The antenna and sensors should not be obstructed by metal or metallic surfaces and should be pointed at the horizon for accurate lo ...
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Uniden LRD 747 - page 12
ADJUSTING THE WINDSHIELD MOUNTING CLIP 1 ) The metal portion of the bracket locks into the plastic portion at three different positions. These positions can be used for v ehicles with dif ferent v er tical angles of their windshields. The back position can be used for v ehicles with windshields that are slanted back 2) For optimum laser detection, ...
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Uniden LRD 747 - page 13
CONNECTING THE PO WER The LRD 7 47/LRD 757 is designed to operate on most 1 2 VDC negativ e ground vehicle electrical systems. The po wer cord pro vided with the unit has a cigarette lighter sock et plug at one end and a small connector at the other . 1) Insert the small connector into the jack on the side of the unit. 2) Insert the other end into ...
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Uniden LRD 747 - page 14
REPL A CING THE FUSE The cigarette lighter plug contains a 1-am pere fuse to protect it from po wer surges. 1 . T o replace the fuse, unscrew the top of the plug. 2 Remo ve the fuse and replace it with the same type. 3. T o replace the top, push in the two metal contacts and twist into place. 12 C:ManualsLRD747LRD747-757.vp Tue Oct 05 11:28:48 1 ...
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Uniden LRD 747 - page 15
OPER ATION Y ou are no w ready to enjoy the conv enience and security of your LRD 7 47/LRD 757 . Please read this section of the Refer ence Guide carefully to familiarize y ourself with the basic operation of this unit. PO WER ON Turn the v olume control to switch on the po wer . When you pow er up the LRD 7 47/LRD 757 , it performs a self-test of ...
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Uniden LRD 747 - page 16
MEMORY RETENTION FEA TURE The Memory Retention Feature r etains the LRD 7 47/LRD 757’s operational settings in memory for at least 2 days without power . When you turn on the LRD 7 47/LRD 757 , it will be in the same mode as when you turned it off. FULL W ARNING When the LRD 7 47/LRD 757 detects a radar , laser , or safety warning signal, it emit ...
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Uniden LRD 747 - page 17
VISUAL ALERT ONL Y OPER A TION Y ou can operate the LRD 7 47/LRD 757 in Visual Alert Only by setting the v olume control at the minimum position in Full Alert Mode. At this setting you can barely hear the audio alert in a quiet environment. Be sure that the Audio Alert Only indicator is o ff. A UTO MUTE OPER A TION Press the mute button to activate ...
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Uniden LRD 747 - page 18
CIT Y OPER ATION In highly populated areas, y ou may encounter many devices that use the same frequencies as radar signals, such as motion detectors, automatic doors, and intrusion alarms. These devices may trigger an alert called “falsing.” T o f ilter most of the weak er signals and get the most accurate radar signal recognition, press city t ...
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Uniden LRD 747 - page 19
LED SIGNAL STRENGTH METER IN CITY MODE The LED signal strength meter giv es you instant information about the strength of the signal being detected. A w eak signal causes the first LED to light, but as signal strength increases, more LEDs light. All three LEDs light when full signal str ength is receiv ed. Use this meter to judge the distance from ...
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Uniden LRD 747 - page 20
CARE AND MAINTENANCE The LRD 7 47/LRD 757 is designed to give y ou years of trouble-fr ee service. There are no user -serviceable parts inside, and, except for the fuse, no maintenance is required. T o k eep your detector in new condition, follo w these important suggestions: • Never leave the LRD 747/LRD 757 on the windshield when you park your ...
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Uniden LRD 747 - page 21
TROUBLESHOOTIN G If your LRD 7 47/LRD 757 does not perform up to expectations, tr y the suggestions listed belo w . If you cannot g et satisfactor y results, call the Uniden Customer Service Center at (800) 297- 1 023, 7 :00 a.m. to 7 :00 p.m. Central Time, Monday through Friday . Unit does not operate (Power LED not on). • Check the power cord. ...
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Uniden LRD 747 - page 22
General Dimensions: 3 1 9 in. (W) x 4 5 8 in. (D) x 5 6 in. (H) W eight: 3.5 oz Power R equirements: 1 3.8 VDC T emperature Rang e: Operating: -5°F to 160°F (-20°C to 70°C) Storag e: -40°F to 1 85°F (-40°C to 85°C) 360° Laser Detector Receiv er T ype: Pulse Laser Signal Receiv er Sensor Fr ont End: Convex Condenser Lens Detector Type: Puls ...
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Uniden LRD 747 - page 23
CONTR OLS & FUN CTI ONS INCLUDING LED PANEL C:ManualsLRD747foldout.vp Thu Sep 30 17:22:49 1999 Color profile: Disabled Composite Default screen ...
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