Northstar Explorer 650 Installation and Operation Manual38
8-5 Range
Range is the vertical depth displayed on the
Explorer sonar display. For example, if the range
is 100 m, then the sonar display shows depths
between 0 and 100 m. The range is displayed at
the bottom, right corner of a sonar display.
The Explorer has two range modes:
Auto: The Explorer adjusts the range
automatically so that the bottom of the water
is always shown at the bottom of the display.
Auto range is recommended for normal
operation.
To set Auto mode:
1 Go to a sonar display (see section 9).
2 Press
, select Range and select
Auto.
Manual: The Explorer does not adjust the
range automatically. If the bottom depth is
below the range, the bottom will not appear
on the display. Manual range is useful if the
bottom depth changes rapidly, because Auto
range will cause the display to change range
frequently.
To set Manual range or to change the range:
1 Go to a sonar display (see section 9).
2 Either press
to increase range or
press to decrease range
!
WARNING
Use the Auto range when learning to use the
Explorer or when travelling at speed.
Zoom range and offset
The sonar Zoom and Bottom displays can show
a magnified part of the range (see sections 9-2
and 9-3).
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