Uniden LRD 757, LRD 747 User Manual

OF YOUR REFERENCE GUIDE

CONTENTS

Introduction .................................2

Feature Highlights ...............................2

Included with Your Radar Detector ..................3

Speed Detection ..............................4

Speed Detection Systems ..........................4

Radar .........................................4

Laser .........................................5

Controls.....................................6

Controls and Functions ...........................6

LED Panel......................................7

Installation ..................................8

Helpful Tips ....................................9

Adjusting the Windshield Mounting Clip .............10

Connecting the Power ...........................11

Replacing the Fuse ..............................12

Operation ..................................13

Power On.....................................13

Volume Control ................................13

Memory Retention Feature........................14

Full Warning ..................................14

Audio Alert Only Operation .......................14

Visual Alert Operation ...........................15

Auto Mute Operation .......................15

City Operation .................................16

LED Signal Strength Meter in City Mode .............17

Safety Warning System Operation ..................17

Care and Maintenance ...........................18

Troubleshooting .............................19

Specifications ...............................20

NOTE: Foldout the back cover of this reference guide to refer to the “Controls

CONTENTS

& Functions” page.

INTRODUCTION

Welcome to the world of sophisticated, early warning laser/radar detection. You have purchased one of the most advanced laser/radar detectors available. The LRD 747/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 provides 360° detection of the latest speed monitoring system — the laser gun. The built-in Safety Warning System (SWS™) is capable of detecting a hazardous warning signal transmitted on the K-band.

The LRD 747/LRD 757 provides distinct visual and audio alerts to warn you of the presence of X-, K-, and Ka-SuperWideband radar signals as well as IR laser signals. You can drive with confidence when you bring along the LRD 747/LRD 757.

The LRD 747/LRD 757 employs Super Stalker Technology (SST), a state-of-the-art electronic system designed to make this radar detector invisible to all current VG-2 radar detector detectors. The LRD 747/LRD 757 also uses the new D.R.O. (Dielectric Resonant Oscillator) and E.D.I.T. (Electronic Data Interference Terminator) circuitry, giving more reliable performance.

We are certain that you will enjoy the LRD 747/LRD 757, and to ensure that you get the most from its features, please read this Reference Guide carefully before installing and operating the unit.

TO YOUR NEW LASER/RADAR DETECTOR

FEATURE HIGHLIGHTS

•

360° Laser Detection

•

Safety Warning System™

•

All Band Coverage

•

7 Alarm Tones

•

Super Wideband

•

VG-2 Undetectable

•

K/Ka Priority

•

Pulse Detection

INTRODUCTION

•

Signal Strength Meter

•

Warning Lights

•

Visual Only Mode

•

Auto Mute Mode

•

Audio Only Mode

•

Self Test

•

Memory Retention Feature

•

City and Highway Modes

To get the most from your laser/radar detector, please read this Reference Guide thoroughly.

INCLUDED WITH YOUR RADAR DETECTOR

Reference Guide

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Windshield Clip

INTRODUCTION

WARNING

If any of these items are missing or damaged, contact your dealer immediately. Be sure to complete and mail the product registration card. Included with your radar detector.

Printed Material

Straight Power Cord

LRD 747 Only

Fuses and Spare Parts

Coiled Cigarette Adapter

LRD 757 Only

SPEED DETECTION SYSTEMS

A speed detection device (often called a radar gun) sends out either a microwave signal or beam of light. When this signal reaches its target, part of the signal is reflected or bounced back toward the emitting gun. The time required for the signal to leave the gun, bounce off an object, and return is used to determine a vehicle’s distance and speed.

RADAR

▼

Radar (Radio Detection and Ranging) is a microwave system for detecting the speed of moving objects by reflected pulses of high frequency radio waves. There are three radar bands (microwave frequencies): X band (10.49 to 10.56GHz), K band (24.04 to 24.26GHz), and the “superwide” Ka band (33.4 GHz to 36 GHz).

The X band was the first used for traffic, followed by the K band which is harder to detect (most instant-on radar is K band). The Ka band was introduced in 1987, and widened to Ka SuperWideband in 1990 by the FCC. The LRD 747/LRD 757 monitors all current radar bands including the entire Ka SuperWideband.

The radar beam is cone shaped — the narrower the beam, the greater the resolution. A moving vehicle reflects radar signals back towards the radar gun. The LRD 747/LRD 757 can detect the signals emitted by radar guns, and it will sound an audio alarm and flash a warning indicator. For continuously transmitting radar, use the LRD 747/LRD 757 to get accurate detection from a safe distance. Weak signals cause the audio and visual alarms to sound intermittently, but as the signal gets stronger (the closer you get to the radar gun), both alarms increase in intensity.

Instant-on transmitters fire a short radar pulse beam at a vehicle and instantly read its speed. When detected at a distance, you will hear a few beeps and see the strength meter begin to light. Instant-On radar signals are the most difficult to detect at a safe distance because they are transmitted only when directed at you

IMPORTANT INFORMATION ABOUT YOUR NEW LASER/RADAR DETECTOR

or at a vehicle directly ahead of you.

SPEED DETECTION

LASER

▼

The Laser Speed Detection System, also called LIDAR (for Light

etection and Ranging), uses a laser gun that emits infrared light

D pulses just outside the spectrum of visible light. Each reflected pulse measures the speed of the object coming toward or going away from the laser gun.

Unlike radar, the laser gun emits a very narrow beam of light, so it can pinpoint a speeding car within traffic. The infrared beam spreads out, but slowly and over a longer distance than a radar signal.

To be safe, do not ignore any warnings. Although there are other types of radar signals that may cause interference, when the LRD 747/LRD 757 detects a signal, be on the alert. It is important to exercise caution at all times.

The laser gun can acquire a speed reading as quickly as 0.3 seconds, sometimes less. However, since it isn’t easy to accurately aim at and hit a moving target, an operator often moves the laser gun in several directions to get a reading. So laser signals are emitted continuously for a few seconds for each speed measurement.

SPEED DETECTION

The LRD 747/LRD 757 can detect these light pulses from as far away as 1.5 miles, which is about four times the effective range of a laser gun (2,000 feet), and about ten times its average operating range (500-800 feet).

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