26-B
97MU001-F
ANTHEA OPERATION AND INSTALLATION MANUAL
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Zero adjustment
When ship is motionless on dead calm water, speed can be above zero. You then
have to correct this zero shifting.
Make sure there is no undertow.
You can easily check it by putting sensor back to front to check zero does not
change.
If it does, zero can be adjusted by equalizing absolute speed values when sensor is
in normal position and is back to front. Do not forget then to put sensor back in
correct position (red mark towards ship bow).
Put strap E11
Adjust with R57 potentiometer
Once adjustment has been archieved,
Zero adjustment process
E15
E13
E12
E11
take strap E11 off so as to set it
Gain adjustment process
Switch "TEST" mode on, and wait a few seconds till speed stabilizes.
Note test value.
Calculate new test value, i.e. :
Example: Indicated speed on "TEST" position is 20 knots and we want to correct
gain by -0,8 %.
20.0 x 0,8
100
= 19,84 knots
Gain adjustment process
Strap E11
E15
E13
E12
E11
Adjust gain with R56 potentiometer
Gain adjustment process
Once gain has been adjusted, take
strap E11 off, so as to set adjustment
Switch to "NORMAL" position.
