MSD Ignition 7550 User Manual

Figure 1 Button Operation.
Hand Held Programmer/Monitor
for the MSD Programmable Digital-7 Ignition Control
PN 7550
These instructions are meant to illustrate the operation of the Programmer/Monitor and how to navigate
its program menus. Reading the instructions as you operate the Programmer to become familiar with
the screens and menus will assist in your programming.
Parts Included
1 – Programmer/Monitor, PN 7550
The PN 7550 Programmer connects to the MSD Programmable Digital-7 Ignition Control with the
supplied 9-pin wiring harness. It can be left connected when making passes or removed. If you choose
to remove it after making changes in the program, you must go to the Save menu to store the new
programs in the Ignition before disconnecting the harness.
There are six buttons on the PN 7550 (Figure 1). The top four are used for programming all of the
features of the PN 7530 Ignition. The two Launch Control buttons put you directly to the Launch RPM
setting adjustment for last minute starting line changes.
ENTER – This is used to open the selected field for further
programming or to load a new program.
NEXT – Pressing this button moves the cursor to the next field.
After making an adjustment to a program, pressing NEXT will
take you to the Save menu.
Up (⇑) and Down (⇓) Arrows – These buttons are used to change
the settings of programs such as rpm or timing. Pressing the up
button increases the rate while the down arrow lowers it.
LAUNCH REV LIMITER
Pressing one of these buttons takes you directly to the RPM
Launch limit for quick starting line changes. Once at this menu,
use the arrow keys to adjust the rpm limit. Note that this rpm
limit will automatically be saved without having to go to the Save
menu.
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MSD Ignition 7550 Specifications

General

Category	Ignition Control
MPN	7550
Brand	MSD Ignition
Programmable	Yes
Rev Limiter	Yes
Timing Control	Yes
Boost Retard	Yes
Step Retard	Yes
Cylinder Count	4, 6, 8

Summary

Hand Held Programmer/Monitor Operation

Parts Included

Lists included components, specifically the PN 7550 Programmer.

Programmer Button Functions

Explains the function of each button on the programmer unit for navigation and control.

Launch Rev Limiter Functionality

Quick Starting Line RPM Adjustments

Details how to adjust the RPM limit for quick starting line changes using arrow keys.

Ignition Menu Tree Overview

7530 M12 Terminal Screen Layout

Illustrates the screens and programs of the Ignition and Monitor as displayed on the 7550 Terminal.

Main Menu Navigation and Structure

Navigating Between Menu Options

Explains how to move between menu options using the Next and Previous buttons.

Save Menu Options Explained

Describes the menu for saving program changes, with options like Save, Cancel, and Defaults.

Example: Editing MaxRev RPM Limit

Step-by-Step RPM Limit Adjustment

Provides an example of editing the MaxRev RPM limit using the programmer's interface.

RPM Limit Adjustment Procedures

Adjusting the RevMax RPM Value

Details the steps to adjust the RevMax RPM value using the Up and Down buttons.

Saving RPM Limit Changes

Explains how to save the modified RevMax RPM value through the Save Menu.

Programming a Run Timing Curve

Building the Timing Curve Incrementally

Guides on programming a timing curve, emphasizing per-100 RPM steps and timing retard.

Menu Definitions: Core Functions

CamSync Signal Status

Explains the 'CamSync' function, confirming ignition sync signal reception.

CylDeg Timing Pull

Defines 'CylDeg' as the timing pull per cylinder and the cylinder sequence.

LaunchCurve RPM Programming

Defines 'LaunchCurve' for programming the entire RPM curve in 100 RPM increments.

Monitor Engine Parameters

Explains 'Monitor' for selecting viewable parameters during engine running.

Menu Definitions: Retard and Limit Settings

RevLim: Setting Rev Limits

Defines the menu for setting three rev limits: RevBurn, RevMax, and RevLaunch.

RunCurve RPM Increments

Defines the menu for programming the entire RPM curve in 100 RPM increments.

ShiftLt Activation RPM

Explains 'ShiftLt' as the RPM setting for Shift Light activation.

StartRetard During Cranking

Defines 'StartRetard' as timing retard used during cranking.

Default Settings and Adjustments

Ignition Default Value Reference

Lists default values and adjustable increments for various Ignition settings.

Technical Notes and Support

MSD Component Service Procedures

Details warranty service, return procedures, and contact information for repairs.

Product Limited Warranty Terms

Outlines the one-year limited warranty for defects in material and workmanship.