Specifications

7-2-28 Section 7: System Setup
ST290 Instrument System Owner’s Handbook
Figure 2-25: Setting depth offsets
To set the required offset, ascertain the vertical distance between the
transducer location and the required offset point (waterline or bottom of
the keel), then:
1. In the Transducer Calibration chapter, use the button to move to
the DEPTH OFFSET adjust page (see Figure 2-26 ). The screen dis-
played depends on what type of depth offset is currently set, either
WATERLINE, TRANSDUCER (zero offset) or KEEL.
2. Use the or button to set the required offset value, using the fol-
lowing guidelines:
• The button moves the offset value away from KEEL, through
zero, to WATERLINE values.
• The button moves the offset value away from WATERLINE,
through zero, to KEEL values.
• The annotation and the arrows on the screen show how the offset
is applied.
D5747-1
Depth reading
when zero
offset applied
Depth reading when
correct WATERLINE
offset applied
Depth reading when
correct KEEL
offset applied
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