Mitutoyo SURFTEST SJ-410 - Page 225

7. MODIFICATION OF THE MEASUREMENT CONDITIONS AND EVALUATING CONDITIONS
■ Measurement involving different traverse lengths
Measurement of different traverse lengths is available. The evaluation start points of
profile A and B must be aligned.
Therefore, as shown below, traverse lengths may be longer than the long evaluating
conditions in some cases.
The following settings are used in the example.
Setting example (longer traverse length required)
Condition settings Evaluating Condition A Evaluating Condition B
λc 2.5 mm (0.098 in) 0.8 mm (0.031 in)
Number of sampling
lengths
1 7
Filters Gauss Gauss
Pre-travel/Post-travel ON ON
Align the evaluation start points of profile A and B.
Evaluation
start point
Evaluating
Condition A
Approach
travel
Sampling
length 1
Post-
travel
Pre-
travel
Evaluating
Condition B
Pre-
travel
Align the evaluation start points of profile A and B.
Sampling lengths 1 to 7
Post-
travel
Traverse length
Traverse length: 7.75 mm (0.305 in)
Approach travel (0.5 mm) (0.019 in) + Pre-travel length λc/2 (0.4 mm) (0.015 in) +
Evaluation length λc (0.8 mm) (0.031 in) × 7 sampling lengths + Post-travel length λc/2
(0.4 mm) (0.015 in) + Length moved (0.85 mm) (0.033 in)
No. 99MBB765A
7-59