HEIDENHAIN iTNC 530 Service Manual page 52

Trigger threshold:
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Slope:
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Pre-trigger:
Recording begins at a time preceding the trigger time point by the value entered here
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Oscilloscope display:
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During recording, the trains of selected signals are constantly depicted. After recording ends, the
memory contents are displayed. For every channel, the manner of the signal and the resolution
are also shown. The length of the recorded range referenced to the entire memory contents is
displayed as a bar in the status field.
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Enter the trigger threshold
(the height of the threshold is determined by the signal size to be expected; the appropriate
units result from the signal type; enter a threshold of 1 or 0 for PLC signals).
Define whether recording will be triggered with the rising (positive) or falling (negative) edge.
Enter a value.
Press the Osci soft key
Move the cursor with the arrow keys to select the channel. The amplitude of the selected
channel as well as the time (with reference to start of recording) are shown in the status field.
With the soft key CURSOR 1/2, you can activate a second soft key. For this cursor the current
amplitude and time are also displayed. The time (s) displayed for the second cursor depends
on the status of the first cursor. This function allows you to measure the acceleration time of
an axis.
Note
The cursor is only placed at the trigger point, if it was not moved by pressing the cursor keys.
If the cursor has been moved, it will remain at the point of the time axis to which it has been
moved. The cursor does not return to the trigger point until a trigger parameter has been
changed.
HEIDENHAIN Service Manual iTNC 530