Cobra XRS 9990 User Manual - Page 8

*9850.MANUAL 8/9/00 12:24 PM Page 14 Operation Operation Muting Selecting Auto Muting Mode In Auto Mute mode the alerts will be heard at the volume set for 3 seconds, then automatically be reduced to a lower level. 1 Press and release Mute button when no signal is being received. Auto Mute will appear in display for 2 seconds, then disappear. All future alarms will be Auto Mute. In Voice Alert, the message "AutoMute" will be heard. Selecting Manual Muting Mode In Manual Mute mode the alerts will always be heard at the set volume level. 1 Press and release Mute Button when no signal is being received. Mute will appear on the display for 2 seconds, then disappear. 14 Calibrate Compass The compass in your ESD-9850 must be calibrated before you use it to give accurate directions. Calibration allows the compass electronics t o measure and store information about the magnetic fields from your vehicle. Calibrate Compass Note Pushing City button for more than 2 seconds produces a single beep confirmation tone. 1 Press City button for a minimum of 2 seconds. Compass is displayed. Note If you decide to re-locate your ESD-9850 to a different location in your vehicle or move it to another vehicle, it is best to recalibrate the compass. 2 The message "Drive in 2 circles... Press City when done" will then be displayed. 2 Drive your car in a circle twice and then press City. Your compass will be set. The display provides 8 primary directions;N,NE, E, SE, S, SW, W and NW. Note Your compass may not give a correct reading if you are inside any enclosure, building or close to a large metal tractor trailer, truck or train. Your compass will work again correctly as soon as you get away from these locations.There is no need to calibrate your compass again. 15