IGN ignition angle measurement module 329
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
Low-pass filter:
Optionally, a low-pass filter can be set in the parameters in order to smooth the signal and suppress
noise. Brief outliers are also reduced. The low-pass filter can be varied between 2 kHz and 100 kHz
cutoff frequency. The low-pass is always 1st order and can also be turned off entirely.
Note that in addition to this configurable low-pass, the analog low-pass is also present, which can not
be turned off.
If a low-pass filter is used, it is absolutely necessary to adapt the signal delay time accordingly.
The low-pass filter comes after the optional absolute value formation and before the edge detector.
This parameter is also effective in Snapshot mode.
Absolute value:
Optionally the absolute value can be formed. This may be of interest for the ignition signal if the
ignition sensor can also be connected in a different orientation.
Formation of the absolute value is performed following the optional AC-coupling, but before the
optional low-pass filtering and thus before the edge detector.
This parameter is also effective in Snapshot mode.
6.11.4.2 Offset adjustment
The offset is adjusted at factory.
It is recommended to have the offset rechecked and adjusted once per year. For this purpose, imc offers
maintenance servicing.
The user can also perform the offset adjustment. To do this, one short circuit connector must be
connected to each input channel. Subsequently the menu item "Module / Measure" is called.
The adjustment button is clicked next.
If adjustment was not successful, there is a readout on the device's display.
Subsequently, a control measurement should be performed in Snapshot mode.
To Next Page
Loading...
