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Chapter 6 SPECIFICATION
I. MAP
A. Display Scale:
(i) Screen width:
400m ~ 3,000km
.
(ii) Map layer:
12 levels
for zooming in/out.
B. Map Memory:
(i) GM-305-WT: 0 Byte.
(ii) GM-305-DT:
2M
Byte.
(iii) GM-305-HT:
8M
Byte.
II. NAVIGATION
A. Waypoints: 500
maximum, including name, symbol, comment and display.
B. Routes:
20
maximum, up to
30
waypoints each.
C. Track logs: 6
maximum --
5
in back up and
1
in use. Up to
2,500
points each.
III. FUNCTION
A. Receiving and tracking
12
satellites.
B. Acquiring Time:
(i) Cold start:
75
seconds averaged.
(ii) Warm start:
40
seconds averaged.
(iii) Hot start:
15
seconds averaged.
(iv) Acquiring rate:
0.1
second.
(v) Updating Rate:
1
second.
IV. ACCURACY
A. Position:
5-25
meters.
B. Speed:
0.1
m/sec.
C. Time:
±
1µs.
V. LIMITATION
A. Latitude:
-1,000m ~ 18,000m
.
B. Speed:
< 515
m/sec.
C. G:
±
4G
.
VI. INTERFACE
RS-232 for data communication and NMEA output.
