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ON SCREEN SWITCHES (con’t)
Train
always 0 degrees in Sector and Polar Modes.
Up, Down, Port and Stbd settings are available for
Sidescan Mode.
KEYBOARD SWITCHES
The following switches are selected via keyboard entry (case insensitive):
C
to clear the sonar screen display.
G
to change the Start Gain of the sonar head. When the '
G
'
key is pressed, the Key Command Entry Box displays the
prompt:
Gain: ? dB
. Type in a valid start gain number (0-
40dB) and press <Enter> to change to the new start gain
value. If the entered gain is not valid or the <Esc> key is
pressed, the current gain will be used. Available only
when DATA FROM '
HEAD
' is active.
H
to hold or freeze the display.
R
to change the operating range of the sonar head. When the
'
R
' key is pressed, the Key Command Entry Box (below
the DATA FROM buttons) is displayed with the
following prompt:
Range: ? M
(meters) or
Range: ? FT
(feet). Type in a valid range number: 5(15), 10(30),
20(60), 30(90), 40(120) or 50(150) in meters or (feet)
using the numeric keys and then press <Enter> to change
to the new range. If the entered range is not valid or the
<Esc> key is pressed, the current range will be used.
Available only when DATA FROM '
HEAD
' is active.
Space Bar
to reverse the current sonar head scanning direction. Can
also be used to reverse the file playback direction.
