ETAS ES1336.1, User Manual

Page: 14 / 30

Hardware 14
Calculating the Measure Values
The measure values start being calculated once the upper end of the angle
window has been reached; the result is transferred directly to the DPRAM. This
ensures that the data in the DPRAM is up-to-date and consistent.
Fig. 2-4 illustrates this using the measuring of injection signals in an 8-cylinder
engine as an example: a cylinder is measured within an angle window of
around 70° before TDC to 30° after TDC; then the data of the relevant cylinder
is transferred to the DPRAM.
Fig. 2-4
Angle Window for Measuring Injection Signals
Cyl. 1
Cyl. 2
Cyl. 3
Cyl. 4
Cyl. 5
Cyl. 6
Cyl. 7
Cyl. 8
0 °CA 360 °CA 720 °CA
90 °CA
180 °CA 270 °CA 450 °CA 540 °CA 630 °CA