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MSM+ HB
Option
Averaging *
Number of averaged planes *
Trigger
Drop-down list for trigger selection
TriggerDelay in ms *
TriggerLevel *
Tab. 9.4:
Options in the Device control > Advanced tab of the Single planes measuring mode
Revision 00 EN - 02/2022
Explanation
If this option is enabled, different algorithms for averaging a plane
measurement can be selected in the drop-down list below. Averaging
over several measurements can be useful, for example, when measuring
a laser with significant power fluctuations.
1.
Set the check mark to enable the option
2.
Select an algorithm from the drop-down list:
•
Arithmetic mean: The measured values for each pixel are added
together and divided by the number of planes.
•
Max. intensity per pixel: The values from all the measurements are
compared for each pixel and only the maximum value for each one
is displayed.
•
Max. lines: The values from all the measurements are compared for
each line (meaning the line issuing from the measuring device in the
x-direction for example) and only the maximum value for each one is
displayed.
X With the Averaging option enabled, enter the number of plane
measurements for averaging.
Drop-down area for displaying the options of the trigger operation.
The trigger operation is suitable for measuring special pulsed beams.
Detailed information on this topic can be found in the chapter 16.3 on
page 110.
This drop-down list is only visible if the drop-down area for displaying the
options of the trigger operation is open.
You can select from the following options:
•
UseNoTrigger: Switches to the default cw / quasi-cw operation.
•
UsePhotoTrigger: Switches to a trigger operation in which the
measurement is triggered internally. The signals come from the
photodiode built into the device.
•
UseExternalTrigger: Switches to a trigger operation in which the
measurement is triggered externally. The trigger signals enter the
device via the BNC socket.
This drop-down list is only visible if the drop-down area for displaying the
options of the trigger operation is open.
The trigger delay specifies the period between the trigger signal and the
beginning of the integration time. Use one of the following options to set
the trigger delay time:
X Enter a value in the input field (0.012 ms to 400 ms).
X Use the slider below the input field.
This drop-down list is only visible if the drop-down area for displaying the
options of the trigger operation is open.
The trigger level is the threshold value for triggering a signal via the inter-
nal photodiode. Use one of the following options to set the trigger level:
X Enter a value in the input field.
X Use the slider below the input field.
You can determine the threshold value suitable for a measurement task
as follows:
1.
Set the trigger level to the maximum value.
2.
Decrease the value step by step until the device receives some
trigger signals (lower trigger level).
3.
Increase the value until the device does not receive any trigger
signals (upper trigger level).
4.
Calculate the trigger level as the arithmetic mean of the two limit
values.
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