How Do I Adjust The Power Setting - Raymarine C-Series Reference Manual

Chapter 7: Using the Fishfinder
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:
• GAIN MODE - this 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.
• COLOR GAIN - this 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.
• TVG - A low TVG value has little effect on gain in shallow water.; a high value
decreases the gain in shallow water so that only the strongest echoes are
displayed.
4. Press OK or CANCEL twice to return to the default display.

How do I adjust the power setting?

The Power control provides adjustment of the transducer signal. When AUTO is
selected (default), the DSM automatically determines the required power setting
based on the current depth, speed, and (bottom) signal strength.
If, however, you wish to manually adjust the power to suit current conditions, you can
adjust the power level between 0 and 100%, in 10% increments. Lower power levels
are normally used in depth ranges less than 8 ft. (2.4 m) and higher power levels are
typically selected for depths greater than 12 ft. (3.7 m).
To adjust the Power Setting:
1. Press FISHFINDER SETTINGS.
2. Press POWER.
3. Toggle POWER to either AUTO or MAN. If MAN mode is set the power adjustment
slider is displayed. Use the rotary control to adjust the power value. There is a short
delay whilst the new setting takes effect.
4. Press OK or CANCEL to return to the default display.
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