ipf electronic PY740025, Руководство пользователя

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MANUAL [ PY740025/26 ]
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Subject to alteration! Version: 22.10.2018
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6.3 Measuring repetition time and response time
6.3.1 Measuring repetition time
The measuring repetition time (specified in milliseconds) is the time between two exposure times.
Measuring repetition time = 1/‘Measuring frequency in Hz‘
Example:
Measuring frequency = 100 Hz
1/100 Hz = 0.01 ms
Measuring repetition time = 0.01 ms
6.3.2 Response time
Response time is called the time in which the sensor has output the new measured value after an object
changed his position. Typically it is about 2-3x measuring repetition time.
When the position of the object has changed during the exposure time, the response time is the fastest, ie
about the 2x measuring repetition time.
At the worst case, if the object position has changed shortly after an exposure time, the response time is 3x
measuring repetition time.
6.3.3 Response time when using Sync-In
If the Sync-In input is High, and then to start a measurement, is set to Low, the sensor starts with the
exposure process.
This means that if the Sync-In is in use, the response time always is 2x the measuring repetition time.
Response time fast
2x measuring repetition time
Measuring
repetition time
Laser-
exposure
Response time worst case
3x measuring repetition time
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