MSD 6214 Midget DIS-2 Programmable Race Ignition Installation - Manual (Page 4)

4 INSTALLATION INSTRUCTIONS
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REV LIMITER
An overrev rpm limit can be programmed in 100 rpm increments from 2,000 to 15,000 rpm.
The limiter has a default setting of 9,500 rpm.
IGNITION COMPENSATION
This compensation circuit is designed for MSD’s Crank Trigger Pickups and is automatic.
The circuit compensates for the inherent retard of magnetic pickups creating stable ignition
timing from idle to the maximum engine rpm. This function is automatic and does not require
any adjustments with the MSD pickups. Note: There is an offset of 4° from the input signals
to output signals to produce accurate timing. This must be taken into consideration when
statically setting the timing.
BATTERY MONITOR
This Ignition has a program that monitors the supply voltage of the battery in real time.
There are three different battery types that can be selected to automatically set a low volt-
age threshold by entering the number of cells that the battery has from six to 12. The battery
choices are Lead Acid, NIMH and NICAD. The default battery specification is a Lead Acid, 12
volt, six cell battery which has a low voltage threshold of 10.8 volts.
An example of some battery specs are:
12 volt Lead-Acid, 6 cell———10.8 volts
16 volt Lead-Acid, 8 cell———14.4 volts
12 volt NICAD,NIMH, 10 cell— 11.64 volts
The battery supply voltage is shown as BatVolts on the monitor.
Battery type is listed as BattType and BattCells displays the number of cells for selecting the
low thresehold.
BATTERY LOW PERCENTAGE MONITOR
This program is useful to see how the battery is holding up throughout a race. If the supply
voltage from the battery drops below the low voltage threshold, this monitor will display the
percentage of time that the voltage is below the recommended spec. This percentage is taken
from the entire time frame that the engine is run until it is shut off. This value will be stored in
the Ignition until the engine is started again. It is shown as %LOW on the monitor.
For example, if a race lasts 20 minutes (from the time the engine is started) and the voltage
dips below the threshold for 2 of those minutes, the %LOW value would be 10%. Note: If the
engine is started again, the program over writes the previous setting.
ALERTS
Alerts are messages that can be allowed to momentarily interrupt the current display screen
on the PN 7550 Monitor. The Alerts menu allows the user to select alert messages to be dis-
played, even to interrupt other screens, be scrolled through or skipped altogether. The default
of the Alerts/Scan program is set at 0 and will not show any alerts unless configured to show
any alerts. Until the user desires to change this feature to allow the alert mode of operation.
The alert messages at this time are: Low Spark and DisLost. More alert codes can be imple-
mented as this component matures and as warranted by racer feedback.
OUTPUTS
An LED indicator is mounted on the 6214 end panel and can be used to verify trigger input
from mag-pickups. This LED also displays alert codes such as Low Spark code 2 by blinking
when this condition occurs. This alert code will be indicated both on the LED and the 7550
Monitor/Programmer/PC. An error condition of a lost pickup signal will indicate DisLost and
blink a code 3.
13.2 volt NICAD,NIMH, 11 cell- 12.8 volts
14.4 volt NICAD,NIMH, 12 cell- 13.97 volts