Scanning Speed (Resolution) Adjustment - Interphase Outlook Operation Manual

held down, or the large knob is rotated, a vertical bar on the
left side of the screen (just below the boat icon) will move to
show the area covered by the depth alarm. In addition, a
horizontal line will appear across the display. Whenever a
solidly displayed target appears at the same depth as that
Alarm Bar
covered by the alarm bar, the audible alarm sounds to warn
you of underwater targets or changing bottom conditions. This
alarm is a display alarm, targets must be visible on the display
in order to be detected by the alarm. For example, if the
Outlook's forward range is only set to 100 feet, it will not see
targets at distances beyond 100 feet. (Note: the horizontal
line will disappear a few seconds after the alarm is adjusted)
The Shallow Alarm is often used to alert the user to shallowing
bottom conditions and the presence of underwater submerged
targets, and when activated, will sound a rapid beeping.
Press the "CLEAR" soft key to clear the alarm you previously
set.
Scanning Speed (Resolution)
In it's normal scanning mode NORM, the Outlook will send
out 60 forward beams and will alternate between a forward
beam and the down-looking beam. In the FAST position, only
30 beams will be used and the Outlook will send 5 forward
scanning beams for every down-looking sample.
Use the FAST mode to get a faster picture update. The
resolution of the display decreases in this mode, but the picture
update is much faster than in the NORM mode.
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