Zipper's Performance 309-575 - Manual (Page 16)

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EI5011.doc
APPENDIX A DEFINITION OF TERMS
ADVANCE the number of crankshaft degrees before TDC (Top Dead Center) that
the ignition spark occurs
ADVANCE CURVE the relationship of spark timing in degrees to (for example) engine RPM
COMMUNICATIONS LINK
when the computer establishes a connection via an interface cable and
talks to the ignition module
DOWNLOAD the process of sending calibration information from the host computer to
the ignition module
IGNITION DWELL the amount of time that current flows through the ignition coil before a
spark event. Also called “coil saturation.”
RETARD the number of crankshaft degrees that the spark advance is reduced
when the VOES correction is applied
UPLOAD the process of sending calibration information from the ignition module to
the host computer
X AXIS the horizontal scale of a graph
Y AXIS the vertical scale of a graph