Grid Representation (Raster) For Ignition Oscilloscope - Bosch MOT 240 Operating Instructions Manual

5.2

Grid representation (raster) for ignition oscilloscope

5.2.1 Single-circuit ignition systems with one distributor
F1: Changeover of measuring mode between secondary
oscillogram (pick-off of measured values with secondary
sensor) and primary oscillogram (pick-off of measured
values with green clips).
F3: Call of subprogram: „Picture adjustment" to change the
X-deflection (time axis), the Y-amplification and the picture
position (picture displacement upward or downward).
See Section 5.4.1.
F4: Changeover of grid representation between:
normal representation (all cylinders one over the other)
or
3-dimensional representation (the individual cylinders
shown offset from one another).
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5.2.2 Multi-circuit ignition systems
(two distributors or no distributors)
F1: Changeover of measuring mode between secondary
oscillogram (pick-off of measured values with secondary
sensor) and primary oscillogram (pick-off of measured
values with green clips).
F2: For primary oscillogram:
Changeover of grid representation between the
comparison of the individual cylinders or the individual
ignition circuits.
For secondary oscillogram (only in case of dual-spark
ignition coils, DFS):
Changeover of the grid representation between the
comparison of the individual cylinders or the representa-
tion of positive main and support sparks, negative main
and support sparks and the addition of main and support
sparks.
F3: Call of subprogram: „Picture adjustment" to change the
X-deflection (time axis), the Y-amplification and the picture
position (picture displacement upward or downward).
See Section 5.4.1.
F4: Changeover of the grid representation between:
normal representation (all cylinders one over the other)
or
3-dimensional representation (the individual cylinders
shown offset from one another).