
6-22 E-Series Networked Display Reference Manual
• 200 - to set the active fishfinder window to 200 kHz.
• 50 - to set the active fishfinder window to 50 kHz.
• BOTH - to split the active fishfinder window to show both 50 and 200 kHz
images simultaneously. This is the default setting.
The selected frequency is applied to the scrolling bottom and indicated in the sta-
tus bar(s).
4. Repeat this process for each fishfinder window as necessary.
5. Press OK or CANCEL to return to the default display.
Gain modes
Note:
In addition to the controls described in this section, the Fishfinder Setup options
allow you to adjust the Interference Rejection, 2nd Echo Interference Rejection and
Ping Rate Limit. These options are described on page 6- 18.
Auto gain mode
The gain, or sensitivity, of the display adjusts background noise by varying the echo
strength for display. The value of the GAIN control determines the strength above
which echoes are displayed. There are three AUTO GAIN modes:
• Low is ideal for viewing fishfinder images with a minimum of background noise as
you are cruising to your fishing spot. Only the strongest echoes are displayed.
• Medium is a slightly higher gain setting that displays more detailed echoes as you
are trolling. This is the default mode.
• High gives the best details of the targets you have located but also displays the
most background noise and surface clutter. This is suitable when you are fishing.
With all of these modes, the DSM will automatically adjust the Gain setting for current
conditions and adjust separately for each frequency. Any adjustments made apply to
all windows using that frequency.
GAIN MODE
AUTO MAN
AUTO GAIN
LO MED HI
COLOR GAIN
AUTO MAN
TVG
AUTO MAN
D6679-2
GAIN ADJUST
200 50
FISHFINDER
SETTINGS...
GAIN...
GAIN ADJUSTMENT for individual frequencies is only available when the selected frequency is set to BOTH.
D7357-1
GAIN MODE
FISHFINDER
SETTINGS...
A
T
GAIN...
AUTO GAIN
LO MED HIGH
81244_1.book Page 22 Wednesday, December 1, 2004 11:41 AM
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