7. Fish Finder
7-22
flection echoes that appear between the surface and the bottom echo. Max
automatically sets pulse repetition rate and pulse length according to depth. Auto au-
tomatically sets the transmit rate according to ship’s speed, and is inoperative when
there is no speed data.
DFF1, DFF3/FCV
Heaving: When the vessel is in rough seas, the bottom echo and the echoes from fish
are not stable, because the distance to the bottom changes. To remove this problem,
the satellite compass sends pitch and roll data to the fish finder to adjust the Tx and
Rx beams. This function requires a FURUNO satellite compass and a DFF series net-
work fish finder.
ETR-6/10N, ETR-30N
Range Setup: You can arrange display ranges a desired, from 2-2000 ft. Ranges are
set to default whenever the range unit is changed. Set the range unit before changing
the preset ranges.
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