Page 53
Advanced Settings
confocalDT 24x1
6.3
Averaging, Error Handling, Spike Correction, Statistics
6.3.1
Notes on Averaging
Video
averaging
no averaging /
recursive 2 / 4 / 8
moving 2 / 4 / 3
median 3
Video averaging is carried out
before measuring distances or
thickness. Recommended for very
small peaks.
Measured
value
averaging
no averaging
Specify the type of averaging. N
defines how many sequential meas-
urements the controller will use for
averaging, before issuing the next
reading. Averaging does not affect
the measurement frequency.
moving N values
2 / 4 / 8 ...
1024
Value
recursive N values
2 ... 32768
Value
median N values
3 / 5 / 7 / 9
Value
Error
handling
Error output, no measurement output
Sensor displays an error number.
Hold last value
0 ... 1024
Value
If no valid reading can be obtained,
the last valid value can be hold for
a certain period of time, and will
be issued repeatedly. If the read-
ing is 0, the last valid value is hold
permanently.
Spike
correction
No
Yes
Evaluation
length
1 - 10
Value
This filter removes individual very
high spikes from a relatively con-
stant course of measurement value.
Smaller spikes are preserved.
Max. toler-
ance range
(mm)
0 - 100
Value
Number of
corrected
value
1 - 100
Value
Statistics
2 / 4 / 8 / 16 ... 16384 /
all measured values
The statistical values Minimum,
Maximum and Peak-to-Peak are
calculated and output from a prede-
fined number of measuring values.
Signal for
statistics
calculation
Distance 1 ... 6 / Difference 1 - 2 up 5 - 6
For multilayer measurement pro-
gram the signal is selectable and
will if not already done, added to the
output via Ethernet automatically.
Averaging can be performed in two different signal processing areas.
-
Video signal averaging
-
Measurement averaging
It is recommended to use averaging for statistical measurements or slowly changing
readings. Averaging reduces noise and suppresses distortions in readings.
