insize ISR-C300 - References and Parameter Definitions; Glossary of Terms; Traversing Length Definitions; Arithmetical Mean Deviation (Ra)

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References
Terms
The instrument calculate parameters on the filter profile and the
direct profile , all calculated in line with the GB / T 3505-2000
"Geometrical Product Specification(GPS) —— Surface texture:
Profile method——Term,definitions and surface texture
parameters."
Terms
Filtered profile: profile signal after primary profile is filtered to
remove waviness.
D-P (direct-profile): adopt central line of Least Square Algorithm.
RC filter: analogue 2RC filter with phase difference.
PC-RC filter: RC filter with phase-correction.
Gauss filter: ISO11562.
Traversing Length
Parameters Definitions
Arithmetical Mean Deviation of Profile Ra
Ra is arithmetic mean of the absolute values of profile deviation
Z(x) from mean within sampling length.
Z1
Z2
Zi
Zn
Root-mean-square Deviation of Profile Rq
Rq is the square root of the arithmetic mean of the squares of
profile deviation Z(x) from mean within sampling length.
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