Raymarine E Series Installationsanleitung Seite 145

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Chapter 6: Using the Fishfinder 6-23
Manual Gain Mode
Color Gain
Color gain determines how echoes of different strengths are displayed. As conditions
change the color gain adjusts accordingly.
TVG (Time Varied Gain)
The TVG (Time Variable Gain) reduces the clutter by varying the gain throughout the
water column This function is useful for reducing the appearance of ‘noise’. Increasing
the TVG value increases the maximum depth to which TVG is applied. Decreasing it
reduces the maximum depth. TVG has no effect in Fishfinder Simulator Mode.
Gain adjust (200/50)
When the SELECTED FREQ is set to BOTH (see
page 6- 21
), this soft key is enabled to
allow you to select the frequency that the gain controls affect.
To adjust this gain setting:
1. Select FISHFINDER SETTINGS and then GAIN.
2. Toggle GAIN ADJUST to the frequency whose gain setting you wish to adjust. Any
subsequent adjustment of the gain control will affect the frequency you have
selected.
How do I manually adjust the gain modes?
If necessary you can set the gain controls manually. The new values remain set even
when you switch off the display and are applied to both the active window and any
other fishfinder windows displaying that frequency.
1. Select FISHFINDER SETTINGS and then GAIN.
2. Toggle the required mode to MAN. The adjustment slider is displayed above the
appropriate soft key:
3. Use the rotary control to adjust the value in the slider. This value takes immediate
effect:
D7548-1
GAIN MODE
FISHFINDER
SETTINGS...
MAN
GAIN...
100
D7358-1
COLOR GAIN
AUTO MAN
FISHFINDER
SETTINGS...
GAIN
D7359-1
TVG
AUTO MAN
FISHFINDER
SETTINGS...
GAIN
81244_1.book Page 23 Wednesday, December 1, 2004 11:41 AM
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