Raymarine e7, User Reference

Page: 202 / 320

• Medium (Trolling) is a slightly higher gain setting that displays
more detail. This is the default mode.
• High (Fishing) provides the most detail, but also displays the
most background noise and surface clutter.
Manual
If necessary you can set the gain controls manually, between a
value of 1 to 100 (default value is 75). This value should be set
high enough to see fish and bottom detail but without too much
background noise. Generally a high gain is used in deep and/or
clear water; a low gain in shallow and/or murky water.
The new values remain set even when you switch off the display,
they are applied to both the active window and any other fishfinder
windows with the same frequency.
Selecting automatic fishfinder gain
From the fishfinder application:
1. Select
Menu .
2. Select Adjust Sensitivity .
3. Select Gain Mode .
4. Select the Gain Mode menu so that Auto is highlighted.
Selecting Gain Mode will switch between Auto and Manual gain
modes
5. Go Back to the Sensitivity menu.
6. Select Auto Adjust .
7. Select the required Auto Gain mode.
Adjusting the fishfinder gain manually
From the fishfinder application:
1. Select
Menu .
2. Select Adjust Sensitivity .
3. Select Gain Mode .
4. Select the Gain Mode menu so that Man is highlighted.
5. Use the Rotary Control to adjust the gain to the required setting.
The new values remain set even when you switch off the display,
they are applied to both the active window and any other fishfinder
windows displaying the same frequency.
Fishfinder color gain
You can adjust the color gain to change the signal strength threshold
for the strongest color in your fishfinder display.
Color gain sets the lower limit for the strongest echo color. All
echoes with a signal strength above this value are displayed in the
strongest color. Those with a weaker value are divided equally
between the remaining colors.
• Setting a low value produces wide band for the weakest color, but
a small signal band for the other colors.
• Setting a high value gives a wide band for the strongest color, but
a small signal band for the other colors.
There are two color gain modes:
• Auto . In Auto mode the color gain setting is automatically
adjusted to suit current conditions. Any adjustments made apply
to all fishfinder windows.
• Manual . You can set the color gain manually, between a value
of 1 to 100.
Adjusting the fishfinder color gain
From the fishfinder application:
1. Select
Menu .
2. Select Adjust Sensitivity .
3. Select Color Gain .
4. Select the Color Gain menu so that Man is highlighted.
Selecting the Color Gain menu will switch between Auto and
Manual color gain.
5. Use the Rotary Control to adjust the Color Gain to the required
setting.
202 e7 / e7D — User reference