Raymarine St290 - Depth Chapter; Depth Transducer Offset; Resetting Depth Values

2-2-12 Section 2: Using Digital Instruments
ST290 Instrument System Owner’s Handbook
Depth chapter
The chapter menu title is DEPTH. The pages are summarized in Table 2-2 .
Resetting depth values
To reset the minimum depth or maximum depth value:
1. In the Depth chapter, select the appropriate page.
2. Hold down the button for 2 seconds. After 1 second the displayed
value flashes and after 2 seconds, it resets to the current depth value.
Depth transducer offset
Depths are measured from the Depth transducer to the seabed. However,
you can apply an offset to the actual distance measured so that the
displayed depth reading represents the depth either from the waterline
(positive offset) or from the bottom of the keel (negative offset).
WARNING:
The use of incorrect offset values could result in misleading depth
information being displayed with a consequent risk of running
aground.
Before using your ST290 system, ensure the correct depth transducer
offset has been set, as detailed in Section 7, System Setup.
Table 2-2: DEPTH chapter pages
Page content Description
DEPTH
Current depth
MIN DEPTH
Minimum depth
MAX DEPTH
Maximum depth
DP OFFSET
Depth transducer offset shown in numeric form (METERS, FEET or
FATHOMS).
DEPTH (graph)
Graph showing depth history
81183_2 S2.book Page 12 Tuesday, May 6, 2003 8:39 AM