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Cobra Electronics XRS 9840 - page 1
XRS 9840 12 BAND ™ UL TRA PERFORMANCE DIGIT AL RADAR/LASER DETECTOR WITH XTREME RANGE SUPERHETERODYNE ® TECHNOLOGY Nothing Comes Close to a Cobra ® English Operating Instructions Printed in China Part No. 480-421-P Version D 12 Nothing Comes Close to a Cobra ® English For more information or to order any of our products, please visit our websi ...
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Cobra Electronics XRS 9840 - page 2
Introduction A2 English Contr ols, Indicators, Connections and Displa y Introduction Controls, Indicators, Connections and Display • 12V DC P ower Jack On-Off/V olume Control Allows user to adjust the volume of the tone and voice alerts. Mute Button For manual mute of audio alerts and to select/adjust options while programming. Menu/Save Butt ...
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Cobra Electronics XRS 9840 - page 3
Contents Introduction Nothing Comes Close to a Cobra ® 1 Introduction Important Information ..........A 1 Customer Assistance ..........A 1 Controls, Indicators, Connections and Display ......A 2 Product Features . ............A 3 Overview ..................... 2 Y our Detector Installation ....................3 Getting Started ................6 P ...
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Cobra Electronics XRS 9840 - page 4
Overview Introduction 2 English This manual describes the simple steps for mounting, setting up and using your detector . It also provides helpful information about how radar and laser guns are used and how you can interpret the alerts you receive. Before you begin your installation, please read the Important Information section on page A1 and use ...
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Cobra Electronics XRS 9840 - page 5
Installation Y our Detector 4 English 1. Attach the rubber cups to the bracket. 2. Make sure the rubber cups and your windshield are clean. 3. Push the bracket firmly onto the windshield. 4. Attach the detector to the bracket. Check that the unit is parallel to the road's surface. 5. T o adjust the angle if necessary , gently push or pull on t ...
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Cobra Electronics XRS 9840 - page 6
Getting Star ted Y our Detector Nothing Comes Close to a Cobra ® 7 Standby Screen Icons • 13. 2 V City Mode Highway Mode Compass IntelliMute Above Activation P oint IntelliMute Below Activation P oint User and Alert Settings Battery V oltage Y our detector uses the following icons to indicate modes and functions when set: Sample Screen NOTE For ...
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Cobra Electronics XRS 9840 - page 7
Muting an Alert • Y our detector allows you to quickly turn off an Audio Alert by momentarily pressing the Mute button. If you press the Mute button a second time during the alert, the Audio Alert will be turned back on. After the current alert is gone, the next alert will be heard. T wo other features are incorporated in your detector to ...
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Cobra Electronics XRS 9840 - page 8
EasySet Pr ogramming Y our Detector Nothing Comes Close to a Cobra ® 11 T o use EasySet program mode: 1. Press the Menu/Save button to reach the opening program screen. 2. Choose whether you want to change: a. User Settings — press the Dim button to enter the User Setting loop (see page 12) b. Alert Settings — press the City button to ...
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Cobra Electronics XRS 9840 - page 9
Pr ogram Flow Diagrams Y our Detector Nothing Comes Close to a Cobra ® 13 Alert Settings Programming • Alert Programming allows you to selectively turn on or off detection of some signals. The Alert Settings can be selected using the Dim and City buttons by scrolling through the settings as shown in the program flow diagram below . The A ...
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Cobra Electronics XRS 9840 - page 10
Settings Y our Detector Nothing Comes Close to a Cobra ® 15 NOTE IntelliMute may not work with some vehicles because it cannot sense the engine’ s revs. In such cases, you can reduce unwanted audio alerts by using Auto Mute and City mode when appropriate. NOTE The rev point must be reset if you use your detector in a different vehicle. NOTE When ...
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Cobra Electronics XRS 9840 - page 11
Settings Y our Detector Nothing Comes Close to a Cobra ® 17 Set Compass After the detector is installed in your vehicle and Compass is turned on (see page 34), the system will automatically advance to the Set Compass calibration screen from which the calibration can be performed. WARNING Before calibrating the Compass, go to a large parking lot or ...
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Cobra Electronics XRS 9840 - page 12
Settings Y our Detector Nothing Comes Close to a Cobra ® 19 Car Battery V oltage Displa y Mode Y our detector can sense your vehicle’ s electrical system voltage ( Car Battery Voltage ) and show it on the display during normal operation of the unit. The factory setting is Car Batter y Voltage on. Car Battery Low V oltage Warning In addition to d ...
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Cobra Electronics XRS 9840 - page 13
Settings Y our Detector 20 English Alert Settings • P op Aler t When Pop Detect mode is on, Pop radar signals will be detected and an alert will be given. During the alert, the unit will continue to detect other signals. The factory setting is Pop Detect off. X Band Alert When X Band Detect mode is on, X Band radar signals will be detected and an ...
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Cobra Electronics XRS 9840 - page 14
Detection Y our Detector 22 English T ype of Signal Visual Display Voice X Band Radar X Alert K Band Radar K Alert Ka Band Radar Ka Alert Ku Band Radar Ku Alert Pop Radar Mode Pop Alert Signal Strength Chart Signal Strength = 1 (Weakest Signal) (Strongest Signal) Signal Strength = 2 Signal Strength = 3 Signal Strength = 4 Signal Strength = 5 Radar ...
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Cobra Electronics XRS 9840 - page 15
Detection Y our Detector 24 English T ype of Signal Visual Display Voice Emergency Vehicles Emergency Vehicle Approaching Road Hazards Road Hazard Ahead T rains T rain Approaching T ype of Signal Visual Display Voice VG-2 Alert VG-2 Alert Spectre 1 Spectre Alert NOTE There are different tones for each Safety Alert. NOTE There are different tones fo ...
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Cobra Electronics XRS 9840 - page 16
Understanding Radar and Laser Y our Detector 26 English Understanding Radar and Laser • Radar Speed Monitoring Systems Three band frequencies have been approved by the Federal Communications Commission (FCC) for use by speed monitoring radar equipment: X band 10.525 GHz K band 24.150 GHz Ka band 33.400 – 36.00 GHz Y our detector detects signals ...
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Cobra Electronics XRS 9840 - page 17
Specifications Y our Detector Nothing Comes Close to a Cobra ® 29 Specifications • Band and Frequencies Band Frequencies X Band 10.525 ± 0.050 GHz K Band 24.125 ± 0.125 GHz Safety Alert 24.070 ± 0.010 GHz T raffic Warning 24.110 ± 0.010 GHz System 24.190 ± 0.010 GHz 24.230 ± 0.010 GHz Ka Band 34.700 ± 1.300 GHz Ku Band 13.435 ± 0.050 GHz ...
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Cobra Electronics XRS 9840 - page 18
30 English W arranty Warranty Limited 1-Y ear Warranty • For Products Pur chased in the U.S.A. Cobra Electronics Corporation warrants that its Cobra 12 Band Radar/Laser Detectors, and the component parts thereof, will be free of defects in workmanship and materials for period of one year from the date of first consumer purchase. This warranty may ...
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Cobra Electronics XRS 9840 - page 19
Accessories Customer Assistance Nothing Comes Close to a Cobra ® 33 Optional Accessories • Y ou can find quality Cobra products and accessories at y our local Cobra dealer , or in the U .S.A., y ou can order directly fr om Cobra. See order info on page 37. Windshield Mounting Bracket Includes suction cups Item # 545-159-N-001 Straight 12V DC Pow ...
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Cobra Electronics XRS 9840 - page 20
Set Display Dim mode default Page 18 15 SECONDS 30 SECONDS Tw o beeps Dim One beep Dimmer One beep Dark Appendix Nothing Comes Close to a Cobra ® 35 Nothing Comes Close to a Cobra ® 35 Introduction Mode T one Visual Display Voice Set Smart- Power mode Page 18 Tw o beeps Smart Power On One beep Smart Power Off Set Display Timeout Interval Page 18 ...
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Cobra Electronics XRS 9840 - page 21
Appendix Nothing Comes Close to a Cobra ® 36 * Not shown if VG-2 Detect is off. ** Not shown if Spectre 1 Detect is off. Appendix NOTE Factory defaults are highlighted in light gray . See referenced pages for more information on the modes. Mode T one Visual Display Voice Set Pop Detect mode Page 20 Tw o beeps Pop Off One beep Pop On Set X Band Det ...
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