Owner manual

June 2004 TargetPro™ User's Manual
Layback
(radio buttons)
You can specify a layback of a recording towfish’s position
from a survey vessel in terms of an Auto setting (the
default) or a Manual setting you type here to override the
Auto setting.
Horizontal
Beam Width
(radio buttons)
You can specify a horizontal beam width used by the
recording sonar in terms of an Auto setting (the default) or
a Manual setting you type here. If you choose Manual, you
are telling TargetPro to override the Auto setting with your
value.
Local Variation
(text box)
Local variation refers to magnetic variation present at the
contact’s position. The variation is the difference between
true north and magnetic north. You can specify a number
of degrees to be added to a magnetic reading for a given
area, thus compensating for the magnetic/local variation
and thereby obtaining the true reading. The default is 0.00 .
Any value entered in the Local Variation box will be used
as the towfish’s heading bias and added to the stored
heading of the towfish.
Latitude/Longitude
Display
(radio buttons)
The Cursor Status window reports whether the displayed
image was recorded using latitude/longitude or
northings/eastings type of navigation positioning.
If latitude/longitude was used, then the units can be:
Degrees, Minutes, Seconds (the default), or
Degrees, Decimal Minutes, or
Decimal Degrees
Northing/Easting
Display
(radio buttons)
The Cursor Status window reports whether the displayed
image was recorded using latitude / longitude or northings /
eastings type of navigational positioning.
If northings and eastings were used, then the units can be
expressed in meters (the default), yards, or feet.
Range Display
Units
(radio buttons)
This is the speed of the surveying vessel or towfish for a
displayed image taken from the data. The speed is
expressed in meters (the default), feet, or milliseconds.
Chapter 5: TargetPro Menu 57