Manual Part # 800-1402-002 Rev K, 072418
Page 29 of 53
Press the
F4
key again and the LCD will display either
AG
or
AAG
depending
on the setting of the
Then you may:
a. Press the
F3
key to clear statistics variables and exit.
b. Press the
F4
key to continue without clearing the statistics variables.
c. Press
SEND
key to transmit the Average Measurement to the output port.
If
Pr25
is set to
0
, the Standard Averaging method is used and the LCD displays
AG
for 1 second followed by the Standard Average: (Measurement Sum ÷
Count)
If
Pr25
is set to any
non-zero
value, the LCD displays
AAG
for 1 second
followed by Trimmed Average ((Measurement Sum - Max - Min) ÷ (Count - 2))
Notes
on the Statistics Function:
Standard averaging will be influenced by the Minimum and Maximum
measurement values. If these values vary greatly from the measurement
population, the average will not reflect a “centered” representation of the
measurement population.
Trimmed averaging, in this implementation, subtracts the Min and Max values
prior to
the averaging calculation. This yields a more “centered” representation
of the measurement population that will be closer to the median value of the
measurement population.
Lack of memory resources limits this Function to Averaging. Only a running
summation is kept in memory, not the value of each measurement sample.
Because of this, we cannot calculate the statistical values of median or
standard deviation. On the other hand, this implementation allows for a large
number of measurement samples to be accumulated. Measurement count can
be up to 65,536 samples. Measurement summation can be 9.223 x 10
14
mm.
