Simrad SH90 - PRODUCT DESCRIPTION REV A Specifications Page 49

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Operation of IS15 Compass
20220760L 47
Magnetic variation [Var]
This is a sub-screen to the Heading display.
The IS15 instruments automatically read the Magnetic Variation
compensation message from a connected GPS. The
compensation is presented on the screen. You are not allowed to
adjust the compensation from the GPS. If you press the
button and hold for 2 seconds the screen just flashes AUtO and
returns to show VAr.
If a GPS is not connected you will be able to enter the magnetic
variation manually.
1. Press the
button and hold for 2 seconds. The MagVar
reading flashes. It indicates ‘000’ when there is no
compensation for the variation.
2. To select or increase an easterly variation value, apply short
presses on the
button. The reading will be positive.
3. To select or increase a westerly variation value, apply short
presses on the
button. The reading will be negative.
4. Press the
button and hold for 2 seconds to save the
setting.
5. Press the
button and hold for 2 seconds to return to the
main screen.
The Locked Course Display
From the Heading Mode a quick single press on the or
push-button will enter Locked Course Mode and the right arrow
will lit on the LCD. If the boat stays steady on course, the LCD
will display the locked course. Whenever the boat is off course
the LCD shows >XX or XX<. ‘XX’ is the magnitude of the
course error and the arrow (<>) points in the direction to steer to
get back on course.
Changing the Set Course in ‘Locked Mode’
This is a sub-screen to the ‘Locked Course’ display and allows
you to view the set course or to manually set to a new course to
steer.
With the LCD arrow pointing right press the
button for 2
seconds and the LCD starts flashing.
The LCD will flash the current set course. If you want to
maintain the set course, press and hold the
button for 2
seconds.
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