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18.2.2 ............................................................................... Filters
18-10
18.2.3 ...................................................... Differences in filter characteristics
18-13
18.2.4 ............................ Amplitude characteristics of 2CR and GAUSS (Gaussian) filters
18-14
18.3 Mean Line Compensation ................................................................................................................ 18-15
18.4 Traversal Length............................................................................................................................... 18-16
18.5 Definitions of the SJ-210 Roughness Parameters ........................................................................ 18-19
18.5.1 ............ Ra (JIS1994, JIS2001, ISO1997, ANSI, VDA, Free): Arithmetic mean of roughness,
Ra (JIS1982): Arithmetic mean deviation of roughness ....................................................................... 18-19
18.5.2 ........................ Rq (JIS2001, ISO1997, ANSI, VDA, Free): Mean square of roughness
18-19
18.5.3 .................................. Rz (JIS2001, ISO1997, ANSI, VDA, Free), Rmax (JIS1982),
Ry (JIS1994, Free): Maximum height ...................................................................................................... 18-20
18.5.4 .......................... Rp (JIS2001, ISO1997, ANSI, VDA, Free), Rpm (ANSI): Tallest peak
18-21
18.5.5 ............................ Rv (JIS2001, ISO1997, ANSI, VDA, Free): Maximum valley depth
18-21
18.5.6 .............................. Rt (JIS2001, ISO1997, ANSI, VDA, Free): Maximum roughness
18-21
18.5.7 ........................................................... R3z (Free): Third-level height
18-21
18.5.8 ................. Rsk (JIS2001, ISO1997, ANSI, VDA, Free): Skewness (degree of asymmetry)
18-22
18.5.9 ....................................... Rku (JIS2001, ISO1997, ANSI, VDA, Free): Kurtosis
18-23
18.5.10 .................................. Rc (JIS2001, ISO1997, ANSI, VDA, Free): Average height
18-24
18.5.11 ............................................. Pc (JIS1994, Free), RPc (ANSI): Peak count
18-24
18.5.12 ............ RSm (JIS1994/2001, ISO1997, ANSI, VDA, Free): Mountain and valley mean width
18-25
18.5.13 ............................................. S (JIS1994, Free): Mean width of local peak
18-27
18.5.14 .......................................................... HSC (Free): High-spot count
18-28
xiv
No. 99MBB122A
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