background image

Settings

Your Detector

6

English

Highway/City Mode

Setting your detector to 

City

mode delays all X band audio alerts until 

the signal strength reaches Level 3. (A single beep will sound when the 
signal is first detected.) This will reduce false alerts while you are driving 
in, or near, urban areas where there are many sources for conflicting 
X band signals such as microwave towers and automatic door openers. 

To change settings, follow the procedure listed below, which indicates 
what you will see and hear (either in 

Voice Alert

or 

Tone Alert

mode) 

as you complete each step. The factory setting is 

Highway

mode.

City Mode

Highway Mode

To Change From Highway Mode to City Mode

Press and release 
the 

City

button.

Tone

Voice

Visual Display

One beep

City

c

appears 

in the display

To Change From City Mode Back to Highway Mode

Press and release 
the 

City

button again.

Tone

Voice

Visual Display

Two beeps

Highway

h

appears 

in the display

h

c

City Button

Press and 

release

Settings

When changing the 

Settings

on your detector, please keep in mind:

Buttons can have multiple functions.

Depending on your choice of 

Voice Alert

or 

Tone Alert

mode, you will

hear either voice messages or tones confirming changes in settings. 

All settings will be stored in memory when the power is 
turned off and recalled when the power is turned back on.

Understanding Radar and Laser

Your Detector

Nothing 

Comes Close to a Cobra

®

19

Strobe Alert

Special strobes mounted on the light bars of authorized emergency 
vehicles (fire trucks, police cars, ambulances) automatically change traffic
signals as the vehicle approaches an intersection. These strobes and the
special strobe detectors located on the traffic signals, introduced fairly
recently by 3M and Tomar, are already in use in more than 1000 cities
nationwide. Cobra’s exclusive 

Strobe Alert

detector will detect these 

special strobes and give an emergency vehicle alert. 

When you receive such an alert, please watch for an approaching 
emergency vehicle and pull over to allow it to pass. To inquire about 
coverage in your area, contact your local fire and police departments.

LIDAR (Laser)

The correct name for the technology that most people refer to as 
laser is actually 

LIDAR

, which stands for Light Detection and Ranging.

LIDAR operates much like radar. Its signal spreads out like a radar 
signal, though not as widely. Unlike radar, LIDAR must have a clear 
line of sight to its target vehicle throughout the entire measurement 
interval. Obstructions such as sign posts, utility poles, tree branches, 
etc., will prevent valid speed measurement.

Some common questions about LIDAR include:

Does weather have any affect on LIDAR?

Yes. Rain, snow, smoke, fog, or airborne dust particles will reduce the 
effective range of LIDAR and can, if dense enough, prevent its operation.

Can LIDAR operate through glass?

Yes. Newer LIDAR guns can obtain readings through most types of glass.
However, the laser pulse also can be received through glass to trigger 
an alarm by your detector.

Can LIDAR operate while in motion?

No. Because LIDAR operates by line of sight, the person using it cannot
drive the vehicle, aim and operate the gun all at the same time.

Is LIDAR legal to use?

Yes. It is legal in all 50 states.

10216_XRS9540_PH2.qxd  8/7/07  1:28 PM  Page 6

Summary of Contents for XRS 9540

Page 1: ...oblems with this product or not understand its many features please refer to this owner s manual If you require further assistance after reading this manual Cobra Electronics offers the following cust...

Page 2: ...vides helpful information about how radar and laser guns are used and how you can interpret the alerts you receive Alpha Numeric Dot Matrix Text Display See pages 6 16 for more information about displ...

Page 3: ...oduction Important Information A1 Customer Assistance A1 Controls Indicators and Connections A2 Display A3 Product Features A3 Your Detector Installation 2 Getting Started 5 Auxiliary Audio Jack 5 Set...

Page 4: ...u send the original receipt it cannot be returned 3 Enclose a typed or clearly written description of the problem you are having with your unit plus the name and address where you want the unit return...

Page 5: ...tions or repairs 3 If the serial number has been altered defaced or removed 4 If the owner of the product resides outside the U S A All implied warranties including warranties of merchantability and f...

Page 6: ...lighter adapter on the power cord into your vehicle s cigarette lighter Dashboard Mounting Specifications Nothing Comes Close to a Cobra 21 Specifications Band and Frequencies Band Frequencies X Band...

Page 7: ...System Ready Power On Testing Voice Alert On Off Volume Control Rotate clockwise away from you co n To Turn On the Unit and Adjust the Audio Volume Rotate the On Off Volume control clockwise away from...

Page 8: ...nces automatically change traffic signals as the vehicle approaches an intersection These strobes and the special strobe detectors located on the traffic signals introduced fairly recently by 3M and T...

Page 9: ...rt technology is relatively new Safety Alert transmitters can be found in limited numbers in all 50 states but the number is growing Depending on your location you may not receive these alerts regular...

Page 10: ...lice radar FULL ALERT Tone sounds one time only Probably a false alarm but possibly pulsed radar Spectre 1 or VG 2 nearby Exercise caution Tone instantly begins repeating rapidly Radar Spectre 1 or VG...

Page 11: ...Detector Nothing Comes Close to a Cobra 9 IntelliMute IntelliMute is a unique new feature that allows you to avoid alerts you don t need to hear because you are stopped or moving slowly By sensing th...

Page 12: ...g IntelliMute must be turned on before setting the activation point Depending on whether the unit is in Tone Alert or Voice Alert mode you will hear a series of beeps or voice messages as you follow t...

Page 13: ...Signal Strength 1 Weakest Signal Signal Strength 2 Signal Strength 3 Signal Strength 4 Signal Strength 5 Strongest Signal _ _ To Set the IntelliMute Activation Point Press and hold the IntelliMute bu...

Page 14: ...our Detector Nothing Comes Close to a Cobra 13 Dim Button Press and hold for two seconds Spectre 1 and VG 2 On Spectre1 VG2 On Spectre 1 and VG 2 Off Spectre1 VG2 Off To Turn VG 2 and Spectre 1 Alerts...

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