About The Positioning Error; Specifications - Clarion NAX963HD Benutzerhandbuch

NAX963HD_280QY5000EA-00_EN.book Page 64 Thursday, May 11, 2006 8:05 PM

About the Positioning Error

Error of the vehicle position
When the vehicle travels, this system learns the
distance and the direction advanced on the map
from the travelling data and corrects the position
accordingly. (distance coefficient/learning
function). Therefore, some initial travelling data is
required for proper operation. According to the
travelling situation and condition of the GPS
satellites, the position of the vehicle position
mark and the actual vehicle position may be
different, but this is not a malfunction.

Specifications

GPS aerial
Mode: Microstrip flat aerial
Dimension: 30.4 (W) x 11.7 (H) x 35.5 (D) mm
Impedance: 50 Ohm
Navigation System
GPS receiving frequency: 1575.42 MHz, C/A
Code
Sensibility: -130 dBm or better
Number of GPS channels: 15 channels
Voice synthesis: ADPCM, Sampling frequency:
11.025 kHz
Power supply voltage: +14 V
Ground: Negative
Current consumption: less than 3.0 A
Dimensions (main unit): 205 (W) × 29.5 (H) × 169
(D) mm
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NAX963HD
Effective method to avoid the
positioning error
When you use the system for the first time,
dislocation may appear as the travelling data is
few. Though, after travelling for a while on a road
where the signal from the GPS satellites can be
received well (such as national roads, principal
main roads, and principal minor roads), the
vehicle position mark will be displayed accurately
on the map. It is possible to train the system in a
short time when applying the following method:
Travel about 15 to 20 km on a smooth road where
there is no barrier in the sky like tall buildings or
forests (GPS signals can be received well) at a
constant speed of 25 km/h or more (try to avoid
frequent acceleration and moderation).
Configuration
●Dimensions (main unit)
205 mm
Main unit: 205 (W) × 29.5 (H) × 169 (D) mm
USB port opening: 17.5 (W) × 9 (H) mm
Note:
Specifications and design are subject to change
without notice for future improvement.
29.5 mm