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Calibration:
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engine rpm channel is pre-configured to an 8 cylinder, four stroke engine for both
normal engine rpm and magneto. You can however change the number of cylinders and switch between
four and two stroke engines. To change, open the Calibration/Configuration window, and click on the
“configure” button for the engine rpm or magneto channel. You can now change the type of sensor and
the red line value.
Testing:
To test your RPM signal, crank the engine and let it idle. If you have an LCD module, the display
should indicate the correct rpm. Your graph should be smooth in general, but be aware that most
readings will bounce very rapidly within a 25 to 100 rpm range. Keep in mind that many race ignition
systems generate a great deal of radio frequency interference, and that the ignition noise can cause
erratic rpm readings. If you believe you are a victim of this interference noise, then make sure that all
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components, including wires, are as far away from ignition components as possible. Also
refer to Avoiding RFI Noise in the Additional Information section.
Copyright c 2008 Computech Systems Inc. 18