Maretron DSM570, Руководство пользователя

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Revision 1.8.3 Page 53
these steps. Use the Increase ( ) and Decrease ( ) keys to adjust the display value until it
matches the known sea temperature. Press the Accept ( ) key to accept the value when you are
satisfied. If you do not wish to perform temperature calibration at this time, press the Abort ( ) key
and the temperature calibration will not be altered.
Figure 33
– Airmar Temperature Transducer Water Temperature Calibration Screen
6.1.9 Transducer Depth Offset
The DSM570 can set the transducer depth offset parameter in an Airmar depth transducer. If you are
interested in the actual water depth (as opposed to the depth beneath the keel), then you should
program a positive value equal to the distance from the waterline to the depth of the depth
transducer. The DSM570 will then add the measured depth of the water (as seen by the depth
transducer) to the programmed offset value to produce the total water depth. If you are interested in
the depth of water beneath the keel, then you should program a negative value equal to the distance
between the depth transducer and the bottom of the keel. The display will then subtract the
programmed offset from the measured depth of the water (as seen by the depth transducer) showing
you the depth of water beneath the keel.
You program the transducer depth offset by pressing the
Enter key (
) with the “Transducer Depth
Offset:” menu item selected which results in the screen shown in Figure.