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GPS
The Global Positioning System (GPS) is a worldwide radio-navigation system able to calculate position
using triangulation based upon satellite signals. The GPS must be positioned so its antennae have a
clear line of sight of the sky
– obstructions such as foliage and reflected signals in built-up areas can
reduce the accuracy.
The X300 can be fed GPS data and embed coordinates into images for location identification and real-
time mapping playback in PCLink200.
The X300 uses the NMEA-0183 Interface Standard. GPS data is received into the X300 RS232 port
using serial data communication.
The X300 can p5V power to the GPS mouse through the serial port. Only GPS units which
operate at this voltage and draw no more than 200mA should be used. The X300 has been tested with
the following GPS receivers:
Garmin GPS16 LVS & GPS18 LVC & GPS18x LVC
RoyalTek Sapphire Serial GPSr
Fortuna U2 Smart GPS
Leadtek LR9450
NB
When using the Garmin GPS18 LVC the X300 baud rate must be set to 192,00.
Connection
The GPS receiver is connected to X300 through the RS232 port. The diagram below shows the 9 way
D-type connector viewed from the back of the X300 and details those pins to be used for the serial data
connection and the +5V supply to the GPS receiver.
Pin
I/O
Connection
4
5
9
>
<
+5V supply
0V GND
DATA
> X300 output
< X300 input
Options
The X300 GPS menu options allow the embedding of GPS position and speed, assuming a valid GPS
signal is being received and the data passed correctly to the X300.
If a GPS receiver is connected but satellite lock has been lost then it is still possible to record the data
but it will not indicate position, speed, date or time and the actual content may vary according to the
type of GPS receiver employed.
Содержание X300 Series
Страница 18: ...18 X300 DIGITAL RECORDER...