56
Revision 00 EN - 01/2021
HP-MSM-HB
35,0(6
13.6.3
Measurement settings (menu
Measurement > Single
)
Fig. 13.4:
Dialogue window
Measurement settings
Controlling measuring modes (individual measurement, monitor, and video mode)
There is a total of three different measuring modes that can be selected here. In the
Individual Measure-
ment
and
Monitor
measuring mode, all necessary compensations (smear effect, diffusion) and exposure
time adjustments are performed every time a new measurement is carried out. Valid measuring data is gen-
erated in this mode.
The measuring mode
VideoMode
does not produce valid measurement data. Here the exposure time is
carried over from the last measurement and does not vary. Compensation measurements are not performed,
making it unnecessary to consider or compensate for measuring artifacts such as smear effects.
Due to the “high” measuring frequency of about 5 Hz, this operating mode is particularly suited for use when
aligning the device. The numeric results should not be interpreted absolutely, but rather always relative to
each other.
Optical amplification (opt. ampl.)
This function activates the automatic adjustment of the exposure time of the CCD for every measurement.
The function must be activated in order to keep the signal/noise ratio consistently high for a caustic measure-
ment.
For special measuring applications, however, it might make sense to deactivate this function and set the ex-
posure time to a fixed value between 12 µs and 200 ms. Here it is important to ensure sufficient attenuation
of the laser beam with the help of the fixed ND filter or the filter wheel.
Symmetrical
Once this function is activated, only rectangular measuring windows will be allowed. In cases where an ellipti-
cal or even a square laser beam is being measured, this function should be deactivated so that the measur-
ing window can be optimally adjusted.
Please find further information on the menu
Measurement > Single
