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MSM+ HB
16.3.2
Measuring configuration selection
There are various measuring options to differentiate between:
•
Measuring a single plane or a caustic
•
Measuring a complete pulse or just a single section
•
Measuring with freely adjustable integration time or with automatic integration time control
•
Measuring in trigger operation or quasi-cw operation
•
Variations of optimal integration time caused by changing the attenuation
Combining these measurement options with the following pulse parameters provides numerous possibilities:
•
Pulse duration: fs – ms
•
Pulse frequency: 1 Hz – 1 kHz
The following merely describes a rough structure that is intended to help in choosing measuring settings.
16.3.3
Influence of the pulse parameters on the integration time control
The software-operated integration time control always assumes that there is a cw laser beam.
This may cause quantization of the integration time for slow pulse lasers (< 500 Hz) or lasers with high pulse
energy (integration time very short). Tab. 16.1 And the diagram in Fig. 16.3 on page 112 illustrates this.
Pulse frequency
Number of detected pulses
in Hz
at maximum integration time 225 ms
1
0
5
1
10
2
50
11
100
22
200
45
500
112
1 000
225
2 000
450
5 000
1 125
10 000
2 250
Tab. 16.1:
Number of detected pulses in correlation with the integration time and pulse frequency
Revision 00 EN - 02/2022
at integration time 1 ms
0 – 1
0 – 1
0 – 1
0 – 1
0 – 1
0 – 1
0 – 1
1 – 2
2 – 3
5.00
10.00
111
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