Uniden LRD 6250SWS, LRD 6275SWS User manual

CONTROLS & FUNCTIONS
INCLUDING LED PANEL
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1
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
CONTENTS
OF YOUR REFERENCE GUIDE
NOTE: Foldout the
back cover of this
reference guide to
refer to the Controls
& Functions page.
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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 6250SWS/LRD6275SWS
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 6250SWS/LRD 6275WS 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 6250SWS/LRD 6275SWS.
The LRD 6250SWS/LRD 6275SWS 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 6250SWS/LRD 6275SWS 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 6250SWS/
LRD 6275SWS, and to ensure that you get the most from its
features, please read this Reference Guide carefully before
installing and operating the unit.
FEATURE HIGHLIGHTS
•360° Laser Detection •Signal Strength Meter
•Safety Warning System •Warning Lights
•Complete 4-Band Coverage •Visual Only Mode
•6 Alarm Tones •Auto Mute Mode
•Super Wideband •Audio Only Mode
•VG-2 Undetectable •Self Test
•K/Ka Priority •Memory Retention Feature
•Pulse Detection •City and Highway Modes
2
INTRODUCTION
TO YOUR NEW LASER/RADAR DETECTOR
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INCLUDED WITH YOUR RADAR DETECTOR
3
INTRODUCTION
Reference Guide Windshield Clip
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Printed Material Fuses and Spare Parts
Coiled Cigarette Adapter
LRD 6275SWS Only
Straight Power Cord
LRD 6250SWS Only
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.
To get the most from
your laser/radar
detector, please read
this Reference
Guide thoroughly.
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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 6250SWS/LRD 6275SWS 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 6250SWS/LRD 6275SWS
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 6250SWS/LRD 6275SWS 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
or at a vehicle directly ahead of you.
4
SPEED DETECTION
IMPORTANT INFORMATION ABOUT YOUR NEW LASER/RADAR DETECTOR
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▼LASER
The Laser Speed Detection System, also called LIDAR (for Light
Detection 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 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.
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.
The LRD 6250SWS/LRD 6275SWS 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).
5
To be safe, do not
ignore any warnings.
Although there are
other types of radar
signals that may
cause interference,
when the
LRD 6250SWS/
LRD 6275SWS detects
a signal, be on the
alert. It is important
to exercise caution at
all times.
Included with
Your Radar
Detector
SPEED DETECTION
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CONTROLS AND FUNCTIONS
1. Clip Release  Press the clip release button to remove the
LRD 6250SWS/LRD 6275SWS 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 City indicator turns on.
While driving on highways, turn off the City
Mode for long-range detection.
4. Press the
audio button to activate the Audio
Alert Only operation. All the LEDs dim, and the
signal strength meter is disabled.
5. Press the
mute button to activate the Auto Mute
feature, which produces a full alert level when a
signal is first received, then automatically
reduces to chirps for the rest of the warning.
6. Speaker  Sounds audio alert. There are six different audio
alert tones to distinguish each type of signal received. When
you become familiar with all the distinct alert tones, you can
operate the LRD 6250SWS/LRD 6275SWS just by listening,
devoting your full attention to the traffic in front of you.DC
12V Power Input  Connect the DC power cord here.
7. DC 12V Power Input  Connect the DC power cord here.
8. On-Off/Volume Control  Turns the power on and adjusts
the Audio Alert volume.
9. LED Panel  LEDs display visual alerts, signal strength, and
operation mode.
6
CONTROLS
AND FUNCTIONS OF YOUR LASER/RADAR DETECTOR
city
audioaudio
mute
NOTE: Foldout the
back cover of this
reference guide to
refer to the Controls
& Functions page.
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LED PANEL
D1) X-Band Signal IndicatorAgreenLEDlights and blinks to indicate
the presence of an X-band radar signal. The blink rate increases as
the radar source gets 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 increases as
the radar source gets closer. A distinct audio alert is
also heard.
D3) Ka-SuperWideband Signal IndicatorAredLEDlights and blinks to
indicate the presence of a Ka-SuperWideband radar signal. The blink
rate increases as the radar source gets closer. A distinct audio alert is
also heard.
D4) Power-On IndicatorAgreenLEDunder P lights to indicate power
is being supplied to the unit and the unit is turned on.
D5) LED Signal Strength Meter  Three LEDs give an accurate visual
indication of the strength of radar or laser signals.
D6) City Mode IndicatorAgreenLEDunder C lights to indicate that
you selected City Mode.
D7) Auto Mute IndicatorAredLEDunder M lights to indicate that
you selected the Auto Mute feature.LED Signal Strength Meter 
Three LEDs give an accurate visual indication of the strength of
radar or laser signals.
D8) Laser Signal Indicator  For laser signals, a red LED under L lights
and blinks to indicate the presence of a laser signal. For the
UltraLyte laser gun, an amber LED under L lights and blinks to
indicate the presence of a UltraLyte laser signal. A distinct audio
alert is also heard.
D9) SWS Signal Indicator  When an early warning hazard or
informational signal is detected, the green SWS LED begins to blink.
A distinct audio alert is also heard.
D10) VG2 Signal Indicator  A rapid flashing red and green LED
indicates the presence of a VG2 signal.
7
Every time you turn
on the LRD 6250SWS/
LRD 6275SWS, a self
test is performed for
all LEDs and Alert
tones. You will hear,
in-order, four distinct
tones for the X-, K-,
and Ka-SuperWideband
radar bands, as well
as for laser, laser L2
and SWS.
CONTROLS AND FUNCTIONS
NOTE: Foldout the
back cover of this
reference guide to
refer to the Controls
& Functions page.
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INSTALLATION
The LRD 6250SWS/LRD 6275SWS uses a highly sensitive horn-type
antenna and IR laser sensor to receive laser/radar signals. Its
sensitivity and range depend on the method of installation and
the direction of the antenna/sensor in relation to the signal
source. The inherent nature of radar waves makes them reflect off
metallic surfaces. This is why these waves are so useful for
measuring the speed of a vehicle. The IR laser light may reflect
only from shiny surfaces. Both radar waves and IR laser light will,
however, pass through plastic or glass.
Before you decide where to put your radar detector, please keep in
mind these two important factors:
•For safety, do not mount the LRD 6250SWS/LRD 6275SWS
in a location where it will obstruct your driving vision.
•Most vehicles have the top part of the windshield tinted.
Mounting the LRD 6250SWS/LR 6275SWS behind tinted or
mirrored glass may reduce the effectiveness of laser
detection by reducing the amount of laser light received by
the dectector.
8
INSTALLATION
OF YOUR NEW LASER/RADAR DETECTOR
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HELPFUL TIPS
The antenna and the forward looking sensor are 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
long-range detection.
•Do not mount the unit behind the windshield wiper blades,
radio antenna, tinted glass area, or mirrored glass. Be sure
the unit is free from obstruction by seat backs, rear view
mirror, sun visors, or the ceiling of the automobile.
•Do not mount the unit in front of the heater or
defroster vents.
•Do not leave the unit in direct sunlight or in the glove
compartment of a closed car for long periods of time, as
extreme changes in temperature may cause internal damage.
Also, removing the unit from the windshield makes you less
susceptible to break-in and theft.
9
INSTALLATION
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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 vehicles with different vertical angles of their
windshields. The back position can be used for vehicles with
windshields that are slanted back
2) For optimum laser detection, bend the angled portion of the
windshield mounting bracket so that the LRD 6250SWS/
LRD 6275SWS is parallel to the road surface. Be sure the
LRD 6250SWS/LRD 6275SWS is mounted so it is free of
obstructions from seat backs, rear view mirror, sun visors,
or the ceiling of the automobile. There must be a clear 360°
line of sight to the outside of the vehicle.
To mount the LRD 6250SWS/LRD 6275SWS:
1) Press the button on top of the radar and insert the
windshield clip into the LRD 6250SWS/ LRD 6275SWS. The
metal portion of the bracket locks in to the plastic portion.
2) Place the bracket and the LRD 6250SWS/LRD 6275SWS in
the proper location on the windshield of your vehicle, and
press the suction cups firmly against the windshield.
10
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CONNECTING THE POWER
The LRD 6250SWS/LRD 6275SWS is designed to operate on most
12 VDC negative ground vehicle electrical systems. The power
cord provided with the unit has a cigarette lighter socket 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 the cigarette lighter socket of
your vehicle.
When installing the power cord, make sure that:
•The socket is clean to allow proper contact.
•The power cord does not block the antenna area on the back
of the unit.
Your unit also comes with ten power cord mounting clips. You
can use these clips to attach the power cord to the window frame
or other parts of the vehicle, keeping it neat and out of the way.
Use the double-sided foam tape squares to attach each clip. Slip
the power cord into the clip to hold it securely in place.
11
INSTALLATION
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REPLACING THE FUSE
The cigarette lighter plug contains a 1-ampere fuse to protect it
from power surges.
1. To replace the fuse, unscrew the top of the plug.
2 Remove the fuse and replace it with the same type.
3. To replace the top, push in the two metal contacts and twist
into place.
12
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OPERATION
You are now ready to enjoy the convenience and security of your
LDR 6250SWS/LDR 6275SWS. Please read this section of the
Reference Guide carefully to familiarize yourself with the basic
operation of this unit
POWER ON
Turn the volume control to switch on the power. When you
power up the LRD 6250SWS/LRD 6275SWS, it performs a self-test
of all its circuits. This test takes about 5 seconds, during which
you will hear the different alarm tones and see all the LEDs. First,
you will hear the X-band alarm for 2 seconds while the X-band
indicator lights. The test also checks the signal meter LEDs. It is
best to adjust the audible alarm during the self-test. Next you’ll
hear the K-band alarm while the K-band indicator and City LED
lights, Ka-SuperWideband alarm while the Ka-Band indicator and
mute LED lights. The laser alarm and the SWS alarm will each
alarm for 1 second, while the City and Mute LED light. The VG2
alarm will alarm for 2 seconds while the City and Mute LED
light.(The power LED remains on until you turn off the unit.)
When turned on the LRD 6250SWS/LRD 6275SWS always returns
to its last setting.
After the LRD 6250SWS/LRD 6275SWS confirms proper operation,
the alert tones and all LEDs, except the green Power LED, turn
off. If the Power LED does not light, check the cigarette lighter
socket connection. If the unit turns on and off intermittently, or
the alert tone sounds too often for no reason, check the power
cord connection at both ends to be sure it is not loose.
VOLUME CONTROL
Adjust the volume control to a comfortable alarm tone level for
your vehicle. The volume level does not have any effect on the
unit’s sensitivity. It is best to adjust the audible alarm during the
self-test.
13
OPERATION
OPERATION
OF YOUR NEW LASER/RADAR DETECTOR
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MEMORY RETENTION FEATURE
The Memory Retention Feature retains the LRD6250SWS/
6275SWS’s operational settings in memory for at least 2 days
without power. When you turn on the LRD 6250SWS/6275SWS, it
will be in the same mode as when you turned it off.
FULL WARNING
When the LRD 6250SWS/LRD 6275SWS detects a radar, laser, or
safety warning signal, it emits a distinct warning tone and the
corresponding alert LEDs (
X, K, Ka, L, SWS or VG2 ) will light
and blink. The blink rate of the LEDs increases and the signal
strength meter LEDs light successively as the signal source comes
closer.
AUDIO ALERT ONLY OPERATION
Press the audio button for Audio Alert Only operation.
When Audio Alert Only is selected, the visual alert and signal
strength meter are disabled. In this mode, all lighted LEDs will
dim. Press the
audio button again for the Full Alert (audio and
visual) Mode. Do not set the Volume control at minimum when in
Audio Alert Only because there will be no alert.
14
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VISUAL ALERT ONLY OPERATION
You can operate the LRD 6250SWS/LRD 6275SWS in Visual Alert
Only by setting the
volume 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 off.
AUTO MUTE OPERATION
Press the mute button to activate the Auto Mute feature.
When the Mute Indicator is selected, the unit is in Auto Mute
Mode. In this mode you hear the full audio alert when a signal
is first received. The audio alert automatically reduces to a chirp
for the duration of the warning.
15
WARNING
To operate with
visual alert only, set
the volume control to
the minimum.
Remember though,
if the volume control
is turned down and
Audio Only operation
is selected, the alarm
features are
completely disabled
OPERATION
Use only a Uniden®
supplied power cord
or its replacement.
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CITY OPERATION
In highly populated areas, you 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.”
To filter most of the weaker signals and get the most accurate
radar signal recognition, press
city to turn on the City Mode.
The City indicator lights.
In City Mode, the combination of visual and audio alert tones
varies based on the strength of the received signal.
16
If you use both the
Audio Only Alert and
City modes you won’t
receive an audio alert
until you are very
close to the radar
source.
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LED SIGNAL STRENGTH METER IN CITY MODE
The LED signal strength meter gives you instant information
about the strength of the signal being detected. A weak signal
causes the first LED to light, but as signal strength increases,
more LEDs light. All three LEDs light when full signal strength is
received. Use this meter to judge the distance from the
signal source.
Signal Strength X-, K-, and
Ka-Super
WideBand
Laser
●❍❍ Visual Visual/Audio
●●❍ Visual/Audio Visual/Audio
●●● Visual/Audio Visual/Audio
SAFETY WARNING SYSTEM OPERATION
The Safety Warning System (SWS) is a new communication
system that will provide an early warning when a road hazard
exists. The LRD 6250SWS/LRD 6275SWS is capable of detecting
the SWS signal broadcast on the K-band by either law
enforcement or local departments of transportation. The green
SWS LED blinks while an audible alert sounds. When this alert
sounds, you should tune to local radio traffic reports or prepare to
slow down or stop your vehicle because you could be approaching
an accident, bad road conditions caused by weather, or road
crews or construction.
17
OPERATION
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CARE AND MAINTENANCE
The LRD 6250SWS/LRD 6275SWS is designed to give you years of
trouble-free service. There are no user-serviceable parts inside,
and, except for the fuse, no maintenance is required. To keep your
detector in new condition, follow these important suggestions:
•Never leave the LRD 6250SWS/LRD 6275SWS on the
windshield when you park your vehicle. The temperature in
the vehicle in summer can reach levels above what is
considered to be safe for this unit.
•To make you less susceptible to break-in and theft, remove
the unit from your windshield when you leave your vehicle.
•Do not expose the unit to moisture. Rain, dew, road splash,
or other liquids can damage the internal components and
reduce sensitivity of the LRD 6250SWS/LRD 6275SWS.
18
CARE & MAINTENANCE
OF YOUR NEW LASER/RADAR DETECTOR
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