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Instruction Manual for the Optical RPM Sensor

Document Version 2.2

Thank you for your purchase! This instruction manual will guide you through the installation and operation of

your Optical RPM Sensor. Please read the entire manual carefully before proceeding. If, after you read the

manual, you have further questions or problems, see the Support page on http://www.eagletreesystems.com for

additional information, or email us at support@eagletreesystems.com.

Supported Products

There are two types of Optical RPM sensors available. The one with 4 wires (one loose wire) is intended for

the eLogger V1, but will also work with the eLogger V2 or V3. The 3 wire optical sensor is used with our

Flight, Boat and Car Recorders, and with the eLogger V2 and V3. The 3 wire optical sensor will NOT work

with the eLogger V1. Note: eLogger V2 is designated by a large “V2” which appears in white letters on the

underside of the circuit board, near the RPM pins.

The Optical RPM Sensor requires Recorders with firmware version 4.XX or later. If you have a Flight,

Boat or Car Recorder (NOT an eLogger) with firmware version 3.xx or lower, a hardware upgrade of the

Recorder is required (fee charged). Email support@eagletreesystems.com for more information.

For the eLogger, you must have firmware version 4.33 or greater for the Optical sensor to work

correctly. To upgrade your eLogger firmware, download the latest Windows application from the Support

page of our website (must be Windows application version 3.29 or later), and after installation, choose

“Hardware, Firmware Control” and follow the instructions. If your Windows CD already has version 3.29 or

later printed on the label, you should not need to do this.

Packing List

Your package should include the following: Optical RPM Sensor,

and a printed version of this manual. Please check your

packaging for printed addenda to this manual which may be

included if changes were made after printing.

Use of this RPM Sensor as a Secondary RPM Sensor with our

Recorder Products

WARNING: DO NOT ATTEMPT TO USE THIS SENSOR

AS A SECONDARY RPM SENSOR, OR OTHERWISE

PLUG IT INTO A PORT OTHER THAN THE PRIMARY

RPM PORT. THE SENSOR WILL BE DESTROYED

IF YOU DO THIS, AND IT WILL VOID THE

WARRANTY.

If you need a secondary RPM sensor, use one of our

magnetic Hall Effects RPM sensors for this purpose. See

the Recorder manual for information on how to do this. If

you absolutely need to use the Optical sensor as a secondary

sensor, please email support@eagletreesystems.com for more

info.

Summary of content (4 pages)

PAGE 1
Instruction Manual for the Optical RPM Sensor Document Version 2.2 Thank you for your purchase! This instruction manual will guide you through the installation and operation of your Optical RPM Sensor. Please read the entire manual carefully before proceeding. If, after you read the manual, you have further questions or problems, see the Support page on http://www.eagletreesystems.com for additional information, or email us at support@eagletreesystems.com.
PAGE 2
Page 2 How the Optical Sensor Works The Optical Sensor works with your Data Recorder/eLogger to measure RPM via reflected infrared light. The sensor contains an IR light source, and an IR detector. Connecting the Optical Sensor the Flight, Car or Boat Data Recorder The sensor plugs into your Data Recorder as shown in Figure 1. Make sure that you connect it in the correct location on the recorder, and with the correct polarity (the plug is polarized).
PAGE 3
Page 3 The surface to which the sensor is pointing should have alternating light and dark areas. The dark area must NOT be shiny or reflective. It should be flat. For best results, half (180 degrees) of the surface should be light, and half should be dark. If you are mounting the sensor near a spinning hub that is constructed light colored material , a black magic marker (if the result is not shiny), flat black paint, or flat black electrical tape can be used to color half of the circumference black.
PAGE 4
Page 4 • • The Software included with the Product. See the Software license agreement for more information on Software restrictions.