Kenwood KNA-G421 Bedienungsanleitung
Warning
Failure to avoid the following potentially hazardous situations could result in serious injury or re.
• Do not attempt to install or service the KNA-G421 by yourself. Installing or servicing the unit without training and experience in
electronic equipment and automotive accessories may be dangerous and could expose you to the risk of electric shock or other hazards.
• When extending ignition, battery, or ground wires, use automotive-grade wires or other wires with AWG 18 (0.75 mm
2
gauge) or
greater to prevent wire deterioration and damage to the wire coating.
• If the unit starts to emit smoke or strange smells, turn off the power immediately and consult your Kenwood dealer.
• Keep small articles (like screws or batteries) out of the reach of children. If any such object is accidentally swallowed, consult a doctor
immediately.
Caution
Failure to avoid the following potentially hazardous situations may result in injury or property damage.
• Make sure to ground the unit to the chassis of your vehicle.
• Secure all wiring with cable clamps or electrical tape. Insulate unconnected wires; do not allow any bare wiring to remain exposed.
• Do not let unconnected wires or terminals touch metal on the vehicle or anything else that can conduct electricity.
• Do not open the top or bottom covers of the unit.
• The KNA-G421 is not waterproof.
August 2007 Part Number 190-00834-03 Rev. A Printed in Taiwan
KNA-G421 INSTALLATION MANUAL
B54-4617-08
GPS NAVIGATION SYSTEM
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English
What’s Included
GPS antenna and
metal plate
main unit screws (4) wiring harness hook and loop
fasteners (2)
Installing the Main Unit
Use the screws or the hook and loop fasteners provided to mount the main unit in the vehicle. Select a location that allows you to
access the unit’s SD card slot. Be sure to place the unit horizontally (at) and secure it completely for best performance.
Caution
• Do not install the unit where it will be exposed to direct sunlight, excessive heat or humidity, dust, spills, or liquids. Use only the
screws provided. If you use the wrong screws, you could damage the unit.
• Check for cables or other parts underneath the oor mat before cutting the oor mat.
Installing the GPS Antenna
Caution
• Do not paint the antenna. This will impair or disable signal reception.
• Remove any object or accumulated snow, etc., from the top of the antenna. It will reduce reception strength.
• Do not pull the cord when removing the antenna or adjusting its position. This can cause a short or snap the wires.
• The permanent adhesive on the back of the metal plate is extremely difcult to remove after it is installed.
The GPS antenna can be installed either inside or outside the vehicle. It should be placed horizontally for best GPS reception.
The GPS antenna must have a clear view of the sky. If you install the antenna inside the vehicle, place it close to a window; GPS
signals can pass through glass but not through metal. Refer to the image on the next page for recommended places to install the
antenna. Place the GPS antenna on a metallic surface, such as the roof of your vehicle, for best reception. If a metallic surface is not
available, mount the GPS antenna to the enclosed metal plate. See the next page for further instructions.
Installing Optional Accessories
For information on installing the optional FM trafc receiver (such as the GTM 10), refer to the installation guide included with the
trafc receiver.
.
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English
Red
To ignition (12 V)
Yellow
To battery (12 V)
Light green
Black
Ignition key switch
Car fuse box
Car fuse box
(main fuse)
To vehicle chassis
To parking brake
detection switch
Optional accessory:
FM traffic receiver
To display unit (NAV I/F terminal)
GPS antenna
Do not connect the yellow wire
lead directly to the vehicle battery.
Connecting directly to the battery
may cause the wire insulation to
fail and may pose a risk of short
circuit and electric shock.
WARNING
If your vehicle’s ignition does not have
an ACC position, connect the ignition
wires to a power source that can be
turned on and off with the ignition key. If
you connect the ignition wire to a power
source with a constant voltage supply,
as with battery wires, the vehicle’s
battery may die.
CAUTION 2 A
2 A
Best (roof of
vehicle)
Good (inside car
on dashboard)
Better (trunk
of vehicle)
Installing the GPS antenna
SD card
WARNING
Be sure to connect the parking
brake wire to ensure safe
navigation.
Steps to Install the
KNA-G421
1. Remove the key from the vehicle’s ignition
and disconnect the negative battery cable.
2. Install the GPS antenna. Refer to the tips
on the previous page.
3. Connect the wiring harness to your vehicle
in the following order: ground, battery,
ignition.
4. Connect the wiring harness to the
main unit.
5. Install the main unit. Refer to the tips on the
previous page.
6. Reconnect the negative battery cable.
To mount the GPS antenna inside your vehicle:
1. Clean your dashboard or other surface.
2. Peel the backing off of the adhesive on the bottom of the metal plate.
3. Pressthemetalplatedownrmlyonyourdashboardorother
mounting surface. You can bend the metal plate to conform to a
curved surface, if necessary.
4. Place the GPS antenna on top of the metal plate.
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English
Acquiring GPS Signals
The rst time you turn on the KNA-G421, you must wait while the system acquires satellite signals for the rst time. This process
could take up to several minutes. Make sure your vehicle is outdoors in an open area away from tall buildings and trees for fastest
acquisition. After the system acquires satellites for the rst time, it will acquire satellites quickly each time thereafter.
Changing the Fuses
If you need to replace a fuse on the red or yellow wires, make sure the wires are not touching to prevent a short circuit. Then replace
the old fuse with a new 2 Amp fuse.
Caution
When replacing a fuse, use only a new fuse with the prescribed rating. Using a fuse with the wrong rating may cause your unit to
malfunction. Disconnect the wiring harness before replacing a fuse to prevent short circuits.
Specications
General
Operating Temperature: -15°C to 70°C
Storage Temperature: -40°C to 85°C
Operating Voltage: 9.5 V to 25 V
Current Consumption: 0.13 A typical at 13 V (Max 1.0 A at 13 V)
ACC off Current: 60 uA typical at 13 V
Dimensions: 30 mm H x 120 mm W x 117 mm L
Weight: 184 g
Map Storage: Internal non-removable memory and optional removable SD card (City Navigator™ map data)
Connectors: System/power,GPSantenna,SDcardslot,Mini-BforoptionalFMtrafcreceiver
Navigation
Receiver: SiRF STAR III high-sensitivity GPS receiver
Frequency: 1,575.42 MHz
Acquisition Times*:
Warm: < 1 second
Cold: < 38 seconds
AutoLocate®:< 45 seconds
*On average for a stationary receiver with an open sky view
Update Rate: 1/second, continuous
GPS Accuracy:
Position: < 10 meters, typical
Velocity: 0.05 meter/sec RMS
DGPS (WAAS) Accuracy:
Position: < 5 meters, typical
Velocity: 0.05 meter/sec RMS
Antenna: External GPS antenna requires metal surface 60 mm x 60 mm or larger, such as a car roof or the included metal
plate. A larger metal mounting surface improves GPS reception.
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