Aim RPM Bridge Manuale utente
RPM Bridge
USER MANUAL
RPM Bridge
User manual
Release 1.03
www.aim-sportline.com 1
INTRODUCTION
RPM Bridge belongs to the last generation of AIM systems for car installations.
ECU Bridge samples but does not record RPM values coming from the vehicle. Data can be
visualized connecting RPM Bridge to SmartyCam, the on-board camera or to an AIM dash
(MyChron3 Dash, TG Dash, Formula Steering Wheel).
Technical features:
•AIM proprietary CAN protocol for external expansion modules;
•USB communication protocol for programming;
•RPM signal 150-450V coil;
•RPM signal 4-50V square wave;
•external power.
RPM Bridge
User manual
Release 1.03
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INDEX
Chapter 1 – Kit and part numbers........................................................................................3
Chapter 2 – RPM Bridge characteristics..............................................................................4
Chapter 3 – Installation and powering.................................................................................5
3.1 – How to receive the RPM signal.............................................................................................................5
3.1.1 – Receiving the RPM signal from the ECU through a square wave signal.......................................5
3.1.2 – Sampling the RPM signal from the coil: low voltage RPM input ....................................................6
Chapter 4 – Connecting RPM Bridge to AIM systems........................................................8
Chapter 5 – Configuring RPM Bridge ..................................................................................9
5.1 – How to transmit the configuration.....................................................................................................10
5.1.1 – Possible problems while transmitting the configuration ...............................................................10
5.2 – Online....................................................................................................................................................10
Appendix – Technical drawing...........................................................................................11
RPM Bridge
User manual
Release 1.03
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0Chapter 1 – Kit and part numbers
RPM bridge kit includes:
•RPM Bridge (4-50V and 150-450V)(1)
•USB programming cable (2)
RPM Bridge part number is: X90BGRPMBM
RPM Bridge
User manual
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1Chapter 2 – RPM Bridge characteristics
As shown here below RPM Bridge features a central 3 pins female Binder connector for PC
interface via USB and three lateral cables for CAN communication, power supply and RPM
signal.
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User manual
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2Chapter 3 – Installation and powering
Please ensure that RPM Bridge and its expansions are not in contact with heat or
electromagnetic interference sources (like spark plugs and coil).
63.1 – How to receive the RPM signal
RPM Bridge can receive the RPM signal in two ways:
•from the ECU through a square wave signal (from 4 to 50V);
•from the coil low voltage input (from 150 to 450V).
93.1.1 – Receiving the RPM signal from the ECU through a square wave signal
In case the vehicle ECU does not communicate through the CAN bus, K line or RS232
protocol, it is possible to sample RPM signal using a square wave signal.
With reference to the above image, to receive the RPM from the ECU using a square wave,
connect:
•the cable labelled “RPM 8-50 V” to the RPM signal out coming from the ECU
(or take RPM signal directly on the stock dashboard connector1);
•the red cable labelled “V battery” to the positive pole of the vehicle battery;
•the black cable labelled “GND” to the vehicle chassis earth;
•the CAN connector to SmartyCam or to an AIM dash.
Please note: it is always suggested to connect RPM Bridge to the vehicle master switch.
Always refer to the ECU user manual for further information. In case ECU output signal is not
a steady square wave, an RPM adaptor (optional) is needed.
The images here below show a not-square RPM signal on the left and a filtered one on the
right.
1RPM signal is often used to power stock dashes. This is why the signal is available on that wiring.
RPM Bridge
User manual
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103.1.2 – Sampling the RPM signal from the coil: low voltage RPM input
If the vehicle is not equipped with an ECU, RPM signal can be taken directly from the low
tension control of the coil.
To sample RPM signal from the coil on the dedicated RPM input (from 150 to 450 V)
connect:
•RPM Bridge cable labelled “RPM 150-450 V” to the coil control;
•the red cable labelled “V battery” to the positive pole of the vehicle battery;
•the black cable labelled “GND” to the chassis earth of the vehicle wiring;
•CAN connector to SmartyCam or to an AIM dash;
Please note: it is always suggested to connect RPM Bridge to the vehicle master switch.
The image here below shows a non filtered unstable coil signal.
The coil to sample the signal from, shown here below, is a black cylinder with three cables
(labelled 1,2 and 3).
•Cable labelled 1 is the coil low tension input.
•Cable labelled 2 is connected to the coil.
•Cable labelled 3 is connected to the battery positive pole (+12V).
Moreover the coil is generally grounded with the chassis as shown here below on the right.
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User manual
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The scheme below shows the voltage in the point labelled “1” in the previous images.
It is reminded that RPM Bridge white cable, labelled “RPM 150-450 V” is to be
connected to the RPM trigger wiring indicated by digit 1 in the previous schemes.
RPM Bridge
User manual
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3Chapter 4 – Connecting RPM Bridge to AIM systems
RPM Bridge can be connected directly to SmartyCam (top image) or to AIM dashes (bottom
image) through a DataHub.
Warning: connect RPM Bridge to AIM devices when both devices are OFF.
RPM Bridge
User manual
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4Chapter 5 – Configuring RPM Bridge
To configure RPM Bridge:
•run Race Studio 2 software,
•go through these steps: press “AIM System Manager” >> ”SMC Bridge” >> “Go
to”;
•press “New” to create a new configuration;
•“New configuration” panel, shown here below, appears.
•select RPM Bridge in the drop down menu, fill in the panel and press OK.
The system comes back to “System manager” window. Enable “System Configuration” layer.
Indice
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