MICRO-EPSILON
X9751109-B060097MSC
28
8.
Information for Operation
8.1
Measuring Rate
The maximum point measuring frequency of the overall system is 250 kHz. A profile
consists of a number of measuring points. Consequently, the number of measured
profiles per second is simply the point measuring frequency divided by the number of
measuring points per profile.
Tab. 8.1: Realized number of measuring points and profile frequency.
As standard 256 measuring points are output per profile.
8.2
Automatic Control of the Exposure Time
The automatic control of the shutter time enables profile scanning with optimum
exposure. It uses the information about the saturation of each point.
Fig 8.1: Demonstration program with illumination control
The time preset of the user is used as initial value for the automatic regulation. It should
be so largely selected that in the darkest place of the profile still valid measurements
are available. Therefor one of the attached demo programs can be used.
If there is no target in the measuring range the "Shutter time" saved in the shutter
register of the sensor is used for the illumination time. This value has to ensure a proof
detection of a dark target too.
Information for Operation
"Shutter time": 10 ms, set
by the user
Effective "Shutter time":
0.49 ms, set by the
illumination control
Illumination control is
active
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