MSD 7530T Programmable Digital-7 Ignition Control Installation - Manual (Page 9)

INSTALLATION INSTRUCTIONS 9
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INDIVIDUAL CYLINDER TIMING
Each cylinder can be retarded up to 10° in 0.1° increments. Adjustments are made through the CylDeg
menu. Default for each cylinder is 0°. A Cam Sync signal for cylinder number one must be incorpo-
rated. The MSD Fiber Optic Pickup, PN 7555, is the easiest or a pickup kit could be fabricated on the
cam gear (MSD Kit PN 2346).
The spark sequence, or firing order needs to be considered when selecting the ICT. You can go
through the Cylinder Numbers and place them with the corresponding position, or go to the Sequence
window and select from the pre-programmed firing orders.
Spark Sequence Program the firing order of your engine.
Degree Program the amount of retard of each cylinder. These retard rates are
added to any other retards that are active. Max retard is 30°.
Sequence Select a firing order:
Program Order Application
1843 18436572 Most GM, Chrysler and AMC V8
1542 15426378 Most Ford V8
1372 13726548 Ford 341/400
1425 142536 Ford V6
1536 153624 Ford, Camaro, Chrysler, AMC V6
1654 165432 Most GM V6
1436 143625 Odd-fire 6-cylinder
RPM/TIME ACTIVATION SWITCH
This program lets you activate a circuit by supplying ground on the Brown/White wire (up to 3 Amps
continuous). This can be activated in two ways; RPM or Time.
RPM Window: Program an rpm value to activate and deactivate a circuit from 800 – 12,500
rpm in 100 rpm increments.
RPM On: Rpm that the circuit is activated
RPM Off: Rpm that the circuit is deactivated
RPM Hysterisis: Built in Hysterisis allows the deactivation point to be set lower than the
activation value.
Time Based: Program an activation point in 0.01 second increments after the launch. Up to 25 sec-
onds of total time. The timer begins when the Dark Blue wire is removed from 12 volts and only if the
programmed Launch Rev Limit rpm has been acheived on the starting line.
OnDelay: The amount of time after launch (12 volts removed from the Dark Blue wire).
OnTime: The amount of time that the switch stays activated. This can be programmed from
0-25 seconds. It will always deactivate after 25 seconds.