S o f t w a r e C o n f i g u r a t i o n s
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Counter Contents
The counter collects and records scanner operating statistics regarding accumulated time in operation, number of power-ups, etc.
Operating Hours
By selecting this function, the user can see a running total of the hours the scanner has been in operation.
Power-Up Count
By selecting this function, the user can see a running total of the number of times the scanner has been powered up.
Daily Operating Hours
By selecting this function, the user can see a daily running total of operating hours. This count can be reset by the user via the
counter reset function.
Reading Gates
By selecting this function, the user can see how many times a reading gate has been triggered. This count can be reset by the
user via the counter reset function.
Good Read
By selecting this function, the user can see how many good reads the scanner has obtained. This count can be reset by the user
via the counter reset function.
Average Reading Eval.
The average reading evaluation is a calculated mean value (CGM) of all the values of the identification quality (CG) of reads
determined while the reading gate was active. A new “smoothed” value MG is formed from this value CGM and the previous
smoothed value MGold.
This statistic is a real-time statistic (MG) determined during the Reading Mode. It also appears as diagnostic reading data in the
header of the output data string. It is calculated by the CLV decoder as explained below:
(a x MGold) - (b x CGM)
MGnew =
———————————-
(a - b)
a=63 b = 1
(63 x MGold) - (1 x CGM)
MGnew =
————————————-
(64)
All values are given as percentages.
This process is referred to as “exponential smoothing.” When there is a jump in the identification quality CG, the half-value of MG
is reached after 44 reads.
Example:
MGold has reached the value 100%. For some unknown reason, new reading gates then always reach the mean value CGM =
50%. In this case, the smoothed value MGnew has dropped to 75% after 44 reads, reaches 67% after a further 44
The value of MG provides an overall indication of the state of the CLV during the previous period and can therefore be used as a
quality characteristic for the reading configuration as a whole. Among other things, the reading quality depends on the quality of
the printed bar code, the positioning and parameterization of the CLV, contamination of the reading window and any “bouncing” of
the reading gate due to an incorrectly set external clock-pulse generator.
