Page 52 of 85
viasis 3003 user manual
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Illustration 47: GPS coordinates of the viasis position in Google maps
In a direct connection to the viasis the last, most current GPS position is displayed. From an
open vtf measurement data file the first GPS position of the chosen evaluation time period is
shown.
If you enter
3
in the
Radio modem
menu in the viagraph terminal you will receive the menu for
the GPS module:
GPS menu:
1. Position list
2. Formatted data output
3. Raw data (NMEA-183)
4. Position fix time: 24h
5. Back
Your choice 1...5?
Due to the high energy consumption of the GPS module the position determination is not done
permanently. Instead the position is determined after the viasis power on and further continu-
ously repeated after the time set in the
Position fix time
. The fixation of the position, may just
need 30 seconds but also up an hour at unfavorable mounting positions, where the viasis is
placed in the satellites signal shadow behind large buildings, walls, trees or other obstacles.
After the position data are determined the GPS module is immediately shut down.
During the GPS data output, see chapters 6.4.3.2 and 6.4.2.3, the measurement of vehicles is
stopped, but not during the set regular position fixes.
6.4.3.1 GPS position list
After insertion of
1
in the
GPS
menu you will get first the number of stored GPS positions, for
example:
Number of GPS positions = 5
Send data (y/n)?
