Innovate Motorsports LM-1 RPM Converter (Aux. Input Cable #2) User Manual

About this manual

This user manual explains how to use the LM-1 RPM Converter (Aux. Input Cable #2) with the LM-1 Lambda Meter. It covers connecting the device using an inductive clamp or pulsed RPM signals, setting up pulse counts per crank rotation, and safety precautions. The manual includes detailed instructions for configuring the RPM converter using a computer’s audio output and provides compatibility information for various engine types.

The RPM converter converts RPM pulses from ignition systems or tach signals into analog 0-5V voltage for data logging. It supports up to 4 additional analog inputs and includes an indicator LED to show valid RPM signal detection. Setup can be done via a computer using LMConfig software or manually using the Setup button on the device.

What's inside

• Introduction
• RPM Measurement Basics
• Using the RPM-Converter with the Inductive Clamp
• Using the RPM-Converter with Pulsed RPM Input
• Setup of the RPM-Converter for Different RPM Pulses/Crank Rotation

Frequently asked questions

What is the RPM converter used for?

The RPM converter converts RPM pulses from various sources to an analog 0-5V voltage and allows connection of up to 4 additional analog inputs for data logging to the LM-1.

What types of engines are supported by the RPM converter?

The RPM converter supports 1, 2, 2-1/2, 3, 4, 5, 6, 8, 10, 12 pulses per crank rotation for various engine types including 4-stroke, 2-stroke, and rotary engines.

How do I set up the RPM converter using my computer's audio output?

Connect the RPM-Converter to the LM-1 unit, connect the serial cable to your computer, connect a 3.5mm stereo cable from your computer’s sound output to the inductive clamp input of the RPM converter, ensure no background sound is playing, switch on the LM-1 unit, and use LMConfig software to configure the RPM converter via the RPM tab.