PSA-916 Sonar Altimeter
4-4
Theory of Operation
Diagnostics
4.3.2 Averaging Algorithm
A moving weighted average is used. Each new range is given a weight of
25%, while the previous value is given a weight of 75%. In addition if the new
range differs significantly from the old range then the new range will be
skipped and the old range will be used. Note that the algorithm will not skip
more than two consecutive ranges. If two consecutive ranges have been
skipped, than the next new range will be used. Note that if a range is skipped
than an “E” is appended to the data and the error output is goes to a logic ‘1'.
4.4 Diagnostics
4.4.1 Analog output
The analog output can be tested by using the DIP switches to put the
altimeter in test mode. The following table shows the dip switch settings and
the corresponding analog output.
Warning - Do not set to the "Datasonics use" position, or damage may result.
SW1
SW2
SW3
SW4
SW5
OUTPUT
SERIAL OUTPUT
ON
ON
ON
ON
ON
0 Volts
Analog out - 0V
ON
ON
ON
ON
OFF
1 Volt
Analog out = 1V
ON
ON
ON
OFF
ON
2 Volts
Analog out = 2V
ON
ON
ON
OFF
OFF
3 Volts
Analog out = 3V
ON
ON
OFF
ON
ON
4 Volts
Analog out = 4V
ON
ON
OFF
ON
OFF
5 Volts
Analog out = 5V
ON
ON
OFF
OFF
ON
Datasonics Use
ON
ON
OFF
OFF
OFF
Datasonics Use
Содержание PSA-916
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