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© Valeport Limited
Error is the value returned when no echo is detected or it is outside the minimum and
maximum ranges defined.
VA500 Altimeter Manual
Page 9
The next page defines:
Output
units,
can
seconds, metres, feet or
fathoms.
Minimum
range
fixed returns close to the
VA500 to be filtered out.
Maximum
range
filtering of spiking in noisy
environments or in the
presence
of
multiple
echoes.
Sound speed is set to
1500m/s.
To
improve
accuracy then the local
sound speed should be
measured
and
applied
here.
If the Altimeter is fitted
with the optional pressure
sensor,
this
can
configured here.
Units can be dBar, metres
or feet.
Tare allows the pressure
sensor to be zeroed to
atmospheric pressure.
Latitude is used in the
conversion from pressure
to depth.
0430831e_VA500_Altimeter_Manual
be
allows
allows
be
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