Transducer Adjustments; Demo; System Reset - Interphase Color Twinscope Operation Manual

Transducer Level (L) and Keel Offset (K)
If you do not adjust the KEEL OFFSET, the Color
Twinscope will display depth readings below the
transducer. Normally the transducer is mounted at some
distance above the bottom of the keel and if this distance is
entered as the KEEL OFFSET (K), the display will show
L = +00
K = +00.0 Ft
the depth below the keel.
The Color Twinscope also includes an adjustments to
compensate for some transducer installation problems,
especially thru-hull installations, where the transducer's
stem is not perfectly vertical to the water's surface. This
problem can be caused by improper installation, or by
changes in the boats fore/aft weight.
When the boat is over a known level bottom, the forward
vertical (VERT) scan display should show a level line. If
the bottom display is slanted upward or downward (as in the
pictures at left), note the approximate angle of the
unwanted upward or downward slope on the display. Then
proceed to the TRANSDUCER adjustment menu, as
above, and press the softkey buttons to adjust the
Level (L). It is possible to adjust +/- 15 degrees. Positive
numbers will tend to make the bottom slope upwards and
negative numbers will make the bottom slope downwards.
After making the adjustment, go to the forward vertical
display and verify the correction. Once adjusted, the Color
Twinscope's memory will retain the setting.

Demo

If the DEMO softkey is pressed the Color Twinscope will
go into a demonstration mode where simulated data is sent
K = +03.1 Ft
L = +10
to the display. This mode can be a useful tool to help
understand the operation of the unit.
To exit the DEMO mode, press the DEMO softkey again.

System Reset

The Color Twinscope remembers most setting when it is
turned off. Normally this is good, however sometimes it
can cause problems and you may want to do a reset on the
machine to restore it to the factory defaults.
To do this, turn the unit on while simultaneously pressing
both the CURSR and PWR buttons.
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