Inscale IN301, Руководство оператора, Страница: 8 / 12

© Inscale 2000
6
STATISTICS OPERATION
The printer has 2 switches to assist in printing statistical information for data received
from balances. The Paper Feed switch (Grey button) normally advances the paper. In
addition the printer has another switch, PRINT (Red button) that is used to send the
Print command to balances and in conjunction with the Paper Feed for some
operations.
When power is turned on the Statistics function is automatically enabled if SW8 is ON.
Send data to the printer from the scale by pressing the PRINT key on the printer,
pressing the PRINT key on the scale or setting the scale to automatically print when
stable.
During data collection the last data can be erased if in error by pressing the PF then
PRINT switch in sequence.
Continue to collect data in this manner. At any time data collection can be stopped by
holding down Paper Feed and then pressing PRINT and releasing both buttons.
A message showing the options is displayed.
PRINT Press PRINT to get a Statistics Report
PRINT + PF Start a new Series by holding PRINT then pressing the
Paper Feed switch
PF + PRINT Continue by holding Paper Feed then pressing the
PRINT switch
The Statistics Report consists of the following information.
n = number of results
sum x = sum of all results
x = average
s = standard deviation (n-1)
srel = relative standard deviation
min = minimum value
max = maximum value
R = range (max – min)
The equations used are:
( )
2
1
−
−
=
n
x x
s
i
x
s
srel
=