Material Reflective Material
Lamination Opaque Backing
Polarity Positive
Overall Size 4.0 in. x 4.0 in. - 101.6mm x 101.6mm
Symbol Type MODULATION
Grade Grade D
Symbol Size 100% Nominal X-dimension in 13 mil (0.33mm)
UPC Number 0 00000 41000 7
Effective Aperture 6 mil (0.006 In.)
  x $259.00

The Modulation Grade cards are offered in Grades A,B,C,D,F (4,3,2,1,0) of modulation for use in testing bar code verifiers. To achieve degraded modulation, one bar has been altered to a lower reflectance, and the adjacent spaces have been altered to have a higher lowered reflectance (thus creating 2 edges of lowered modulation within a higher contrast symbol). Each card is individually serialized, major values are marked on the card, and all values are included in a written report.