Primes HP-MSM-HB, Оригинальное руководство пользователя

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131 Revision 00 EN - 01/2021
HP-MSM-HB
35,0(6
Review (menu Presentation > Caustic > Review)
This function checks whether the results and settings of the caustic measurement are within the reliable
range.
Borderline results
(in the measuring planes
2, 4, 6, 7 and 8)
OK
Not ok
Fig. 24.19: Result window Measurement Review
Under “spread” the average standard deviation of the caustic fit according to the 2. moment method radii is
stated. A “tick” (

) is set if the standard deviation is smaller than 3.5 % and if all of the measuring values lie
within a range of ± 3 % standard deviation.
When the divergence receives a negative assessment (
û
) the affected measuring planes are also displayed.
The displayed planes are arranged from left to right, starting with the greatest divergence and working its
way down. This means that the plane with the greatest divergence (see Fig. 24.19 on page 131 Plane 2) will
be the first one in front.
Valued functions Test criterion
Positive evaluation 
Spread Average relative standard devia-
tion of the caustic fit according to
the 2. moment method
Standard deviation < 3.5 %, all measurement values
within a range of ± 3 % standard deviation
Fill factor Describes the ratio of the beam
diameter to the lengths of the
sides of the measuring window
In the range 0.35 – 0.7
Z-range Measuring range in z-direction At least 4 Rayleigh lengths
Measurement planes Number of measurement planes
per Rayleigh length
At least 3 measurement planes per Rayleigh length
(Z
Min
+Z
r
) < Z
0
< (Z
Max
−Z
r
) Minimum measurement range
above and below the focusing
plane
The focus lies within the minimum measurement
range and this range accounts for at least one Ray-
leigh length in every z-direction
Amplitude (>2 000) Signal control Above 2 000 counts
No Clipping (<4 000) Signal control Below 4 000 counts
Tab. 24.5: Criteria for the evaluation