Chart View - Interphase Twinscope Operation Manual

Chart View

(Conventional down looking)
The Twinscope's phased array transducer can be
electronically steered to look directly below the boat. In
this mode the Twinscope LCD display will show a
picture exactly like conventional fixed beam down-
looking fish finders. When in this mode, the Twinscope
offers a full range of sophisticated features which are
found on advanced conventional depth sounders, such as
split screen zoom, bottom lock, fish and depth alarms,
bottom hardness (white-line), plus several other advanced
features.
From the Command Center select the "CHART" View
and press the "GO" soft key to bring up the menu
showing the features and adjustments for this view. The
display should be similar to that at right.
Range Adjustment
Press the button labeled "RANGE" to bring up the Range
Adjustment soft key menu. Press the button labeled
"AUTO" if you would like the Twinscope's internal
microprocessor to automatically select and adjust the
depth range as bottom conditions change. To manually
adjust the depth, rotate the front panel knob or press
either the range button labeled " " or " ". If you make a
manual depth adjustment, the AUTO range mode is
turned off and will remain off until the button labeled
AUTO is again selected. Note: when in the AUTO
mode, the soft key labeled "AUTO" will be shown in
reverse video (white on black). To return to the main
forward looking menu, press the soft key labeled
"LAST". (To return to the Control Center press the soft
key labeled "MENU")
Sensitivity Adjustment
Press the soft key labeled "SENS." to bring up the
choices available for adjusting the Twinscope's receiver
sensitivity. Press the button labeled "AUTO" so that the
word AUTO is shown in reverse video (white letters on a
black background) if you would like the Twinscope to
automatically adjust its sensitivity for changing
conditions. To manually adjust the sensitivity, rotate the
front panel knob or press the button labeled"- Sens." or
"Sens.+" to increase or decrease the receiver gain. Note
that the soft key shows a number which indicates the
relative sensitivity being used (+1 to +32). When you
35