Clipper ECHO SOUNDER, Руководство пользователя

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Pressing them together again switches the setting back again. The
bar represents the position in relation to the hull-mounted
transducer (represented by the “U”) from where the measurements
are made. Whichever mode is chosen, all measurements, including
alarms, use the same reference point - that is, the surface or the
bottom of the keel - depending on the setting chosen.
Press the ILLUM key to return to normal echo sounding mode.
CHANGING THE DISPLAY UPDATE RATE
(Enable engineering mode, see page 11)
The Clipper Echosounder sends ultrasonic “pings” at a rate of
about seven per second. The rate of pinging is limited by the
maximum depth capability of the unit (100m). A new measurement
of depth is thus available within the unit seven times a second. In
turbulent conditions, or in the presence of high levels of noise such
as outboard motors, there can be rapid variations in the measured
depth. These rapid changes can be confusing if they are displayed,
and so the unit can be adjusted to have a display update rate which
is slower than the ultrasonic ping rate.
The update rate can be set to change on every ping (reading 1), every
second ping (2), every third ping (3), and so on up to every seventh
ping (7). If set to update every seventh ping, the display update rate is
about once per second. The factory pre-set update rate is every third
ping, which updates the display approximately twice a second.
METRES
ENTER SHALL DEEP ILLUM
Figure 10 - Changing the Display Update Rate