Mitutoyo SJ-210 - Page 137

No. 99MBB122A
7-12
■ The relationship between measurement sampling length and cut-off value (λs)
When “P” is selected for the evaluation profile, measurement sampling length is displayed
as a cut-off related item. The symbol used to represent measurement sampling length
changes according to the set roughness standard. When the roughness standards
“JIS2001”, “ISO1997”, “VDA”, or “Free” are selected, “ℓp” is displayed. When the
roughness standard “JIS1982” is selected, “ℓ” is displayed.
When the measurement sampling length is set, the cut-off value (λs) is set accordingly, as
detailed below.
Evaluation
profiles
Measurement
sampling length (ℓp, ℓ)
Ǵ
m(
Ǵ
in)
Cut-off value (λs)
Ǵ
m(
Ǵ
in)
0.08(0.003) 2.5(100)
*1, *2
0.25(0.01) 2.5(100)
*1, *2
0.8(0.03) 2.5(100)
*1, *2
P
2.5(0.1) 8(320)
*1, *2
*
1
: When the roughness standard used is “VDA”, or “Free” the cut-off value (λs) can be
set to “NONE”.
*
2
: When the roughness standard used is “JIS1982” the cut-off value (λs) is set to
“NONE”.