Simrad EQ60 - Manual (Page 88)

Simrad EQ60
76
857-164342 / Rev.C
Maximum Depth - The search for the bottom echo extends
down to this depth whenever bottom track is lost. Enter a
slightly larger depth value than the deepest spot you expect to
visit in order to avoid annoyingly long ping intervals every time
bottom track is lost. A depth value of either 0 or less than the
minimum depth disables the bottom detector.
Bottom Lost Warning - A warning is activated whenever
bottom track is lost. The warning is presented as a message in
the Status bar and as an audio signal.
Min. Depth Alarm - An alarm is activated whenever the
detected bottom depth is smaller than the chosen alarm
threshold. The warning is presented as a pop-up message and as
an audio signal. When the depth value is set to 0, this function is
disabled.
Max. Depth Alarm - An alarm is activated whenever the
detected bottom depth exceeds the alarm threshold The warning
is presented as a message on the display and as an audio signal.
When the depth value is set to 0, this function is disabled.
Backstep Min. Level - After the estimated depth of the bottom
detector, the detected depth is automatically adjusted by
stepping back according to the value of the setting you have
chosen. This allows the EQ60 to verify that the correct bottom
depth has been located. If the value you enter is too large (close
to 0 dB) the adjustments will be very small.
The default value is -50 dB.
Bottom Smoothing - If bottom track is lost, the detected
bottom depth is repeated for a maximum of three consecutive
pings.
Alternative Bottom Detector - This bottom detector resembles
the Simrad ES 380 bottom detector algorithm. This function
may be useful in a steep bottom slope situation.