Confidential Document
©
ATrack Technology Inc. All Rights Reserved. Page 19 of 22
5
5
.
.
3
3
.
.
G
G
P
P
S
S
P
P
e
e
r
r
f
f
o
o
r
r
m
m
a
a
n
n
c
c
e
e
f
f
o
o
r
r
I
I
n
n
s
s
t
t
a
a
l
l
l
l
a
a
t
t
i
i
o
o
n
n
The AX7 determines its position by communicating with the Global Positioning Satellites through internal GPS
antenna. The location chosen of the AX7 will have a lot to do with the overall performance of the GPS receiver.
The AX7 device has internal GPS antenna but it is not a water proof design. Therefore, it shall be interior
installed. Please note that the following interior conditions may cause bad GPS reception of AX7:
Your vehicle has metallic window tint
Your vehicle has a windshield mounted radio antenna
Your vehicle has a solar reflective window
The AX7 installation direction shall be considered as well. Please see the following figure:
The AX7 used the latest GPS autonomous technology which accelerates GPS positioning by capitalizing on
the periodic nature of GPS satellite orbits. GPS orbit predictions are directly calculated by the GPS receiver
and no external aiding data or connectivity is required. Therefore, more satellites received are benefit for GPS
fix under low signal environment for the next 3~4 days.
Good for GPS reception
Sky
Acceptable
Bad for GPS reception
GPS Antenna
DLC Connector
