G.P.S. FEATURES AND COMPARATIVE SPECIFICATIONS

SPECIFICATIONS

SYSTEM PRODUCT CODE

GPS-12

GPS-II+

GPS-III

Receiver type

PhaseTrac12

PhaseTrac12

PhaseTrac12

Antenna

internal

Detachable Quad-Helix

Detachable Quad-Helix

Power supply

5-8 v (4 x AAA)

10-32 v (4 x AAA)

10-32 v (4 x AAA)

Waypoints

500

500

500

Nearest waypoints

9 auto

9 auto

9 auto

Routes (reversable)

20 with 30 wpts

20 with 30 wpts

20 with 30 wpts

Auto Trackback

Ö > 1000 points

Ö > 1000 points

Ö > 1000 points

Waypoint symbols

Ö

Ö

Ö

Breadcrumb trace

Ö

Ö

Ö

Coordinates

Lat/Lon - OS Grid*

Lat/Lon - OS Grid*

Lat/Lon - OS Grid*

Channels

12

12

12

Acquisition time (warm)

c. 15 sec

c. 15 sec

c. 15 sec

Acquisition time (cold)

c.45 sec

c.45 sec

c.45 sec

Autolocateä

c. 5 mins

c. 5 mins

c. 5 mins

Ezinit

c.45 sec

c.45 sec

c.45 sec

Update rate

1/sec or continuous

1/sec or continuous

1/sec or continuous

Accuracy

15 m RMS

15 m RMS

15 m RMS

DGPS ready

Ö 1to5 m RMS

Ö 1to5 m RMS

Ö 1to5 m RMS

Velocity(steady state)

0.1 knots RMS

0.1 knots RMS

0.1 knots RMS

Dynamics

6 G

6 G

6 G

Base Map

-

City points

Global (ex USA) #

Smart zoom (inc. diagonal)

-

Ö

Ö

Size (cms) w x h x d

5.3 x 14.7 x 3.1

5.89 x 12.7 x 4.11

5.89 x 12.7 x 4.11

Weight (inc batteries)

269 g

255 g

255 g

Backlit LCD Display h x w

5.6 x 3.8 cm

5.6 x 3.8 cm

5.6 x 3.8 cm

Switchable display orientation

-

Ö

Ö

Customisable data fields

-

-

Ö

Battery life

< 24 hrs

< 24 hrs

c. 8 hrs

Software selectable battery type

-

-

Ö

NMEA output / input

Ö

Ö

Ö

Chart datums

Ö & user

Ö & user

Ö & user

Lat/Long, UTM, OSGB, Irish, Swiss, German & Maidenhead grids

Ö & user

Ö & user

Ö & user