No. 99MBB122A
8-10
■ GO/NG judgment verification rules
The SJ-210 can set the verification rule of the GO/NG judgment function to the Mean rule,
16% rule, or Max rule.
IMPORTANT
• The verification rules of the GO/NG judgment function apply only to parameters for
which a value for each sampling length within the evaluation range has been obtained
and an arithmetic mean determined.
• When the number of sampling lengths is 1 or a parameter value is determined by the
entire sampling length, the following rule is applied irrespective of any verification rule.
The result is No-Go when parameter value > upper limit value or parameter value <
lower limit value.
Mean rule: This rule decides Go or No-Go judgment through size comparison between
a parameter value, determined as an arithmetic mean of measurements
obtained for each sampling length within the evaluation range, and the
upper/lower limit value.
16% rule: The percentage of No-Go results for evaluation length measurement values
is obtained by individually judging the measurement value for each
sampling length against the upper/lower limit values. When the obtained
percentage of No-Go sampling lengths is below 16%, the overall judgment
is Go, and when the obtained percentage of No-Go sampling lengths is over
16%, the overall judgment is No-Go.
The 16% rule gives the same results as the Max rule when less than 6
sampling lengths are evaluated.
Max rule: The obtained measurement values of each evaluation length are compared
against the upper and lower limit values, and when any evaluation length
value exceeds the upper limit or falls below the lower limit, a No-Go
judgment is made.
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