Geotech GA5000 - Page 59

GA5000 gas analyser OMGA5KN4.4
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following screen is displayed:
Navigation options
Key 1
Key 1 to toggle between ‘Meters’, ‘Feet’ or ‘Yards’ to
define the unit of measurement.
Key 2
Key 2 to toggle between ‘Manual Scaling’ and
‘Automatic Scaling’ to locate a sample point using a
satellite signal.
Key 3
Key 3 to display sample point information:
Bearing:
Direction.
UTC time:
‘Universal Time Code’ received from the satellite and
displays GMT.
Latitude:
Latitude displays as degrees, minutes, seconds and
decimal seconds. The equator is 0.
Longitude:
E (East) or W (West) displays the longitude as degrees,
minutes, seconds and decimal seconds. The Greenwich
meridian defines the zero point.
Altitude:
Altitude displays in meters, feet or yards.
Satellite:
This is the number of satellites that the system can
select. Four satellites will give reasonable position
accuracy; eight or more satellites will increase
accuracy.
Horizontal:
Estimate of horizontal error on the indicated position.
The location is accurate to horizontal error 1.6m.
Vertical:
Estimate of vertical error on the indicated position.
HDOP:
‘Horizontal Dilution of Precision’ which measures the
accuracy of the indicated position.