Kodak 9500 - Manual (Page 88)

8-20 A-61092 September 1999
The first time the test is run, the two percentages will be the same.
If the Current percentage is significantly lower than the Historical
percentage, this indicates any reduction in the overall read rate may
be caused by a deficiency in the bar codes being used. Perform the
Evaluate option to determine the cause of the test results.
NOTE: If an asterisk (*) appears in the display (i.e., Current = xx.x*%),
the Historical percentage is unaffected by the current read
rate. This indicates the current read rate is uncommonly low.
3. When the test is finished, press C to return to normal operation, or
press Stop to remain in the test environment.