RJS Inspector 5000 Operator's Manual page 121

Operator's Guide
Maximum Reflectance (Rmx)
The greatest reflectance value in a scan reflectance
profile including quiet zone.
Note: eRmx is the greatest reflectance value of an
element, not including quiet zone)
Minimum Edge Contrast (Ecmn)
The smallest edge contrast in a scan reflectance
profile.
Minimum Reflectance (Rmn)
The smallest reflectance value in a scan reflectance
profile.
Misread
A condition that occurs when the data output of a
reader does not agree with the encoded data.
Modulation (MOD)
This parameter grade can be "A," "B," "C," "D" or "F."
The modulation grade is based on the relationship
between minimum edge contrast (Ecmin) and symbol
contrast (SC).
MOD = ECmin/SC
The greater the difference between minimum edge
contrast and symbol contrast, the lower the grade.
Scanners and verifiers perceive the narrower bars
and spaces to have less intensity than wider bars and
spaces; the comparison of this diminished intensity of
narrow elements to
modulation. This condition is affected by aperture
size.
Note: Since "ink spread" will reduce the width and
intensity of single module space within a symbol, this
003-4500
Appendix M
wide elements is called
115
RJS, Minneapolis, MN