Product Description
Not every combustion engine provides an RPM signal that a display unit can evaluate. On older vehicles such a tap is often missing entirely, or the available signal is so disturbed that the RPM display jumps or shows incorrect values. Affected vehicles include the YAMAHA TT 600, SIMSON Schwalbe, CITROËN 2CV and TRABANT.
The RPM Signal Filter picks up the ignition pulse inductively at the ignition lead and converts it into a pulsed 12 V square-wave signal. The CUMPAN Cockpit Assistant then receives a defined pulse per ignition instead of a disturbed raw signal.
Benefits
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Defined square-wave signal: The ignition pulse becomes a pulsed 12 V signal with fixed edges. The RPM display stays stable instead of jumping.
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Inductive pickup: The filter is attached directly to the ignition lead with two cable ties. The ignition lead is not cut and the wiring harness remains untouched.
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Fully potted: The housing is water- and vibration-resistant. The filter can also be mounted outside protected areas, close to the ignition lead.
Technical concept
Every ignition event creates a current surge in the ignition lead and therefore a magnetic field. The filter picks up this field without contact, evaluates it and forms a square-wave signal with fixed edges. Power is supplied through a switched 12 V line and ground, so the filter only operates while the ignition is switched on. The signal line is connected to the black RPM signal cable of the CUMPAN. Connection is made through blade connectors, as with the other devices from BEROTEC Motorrad.
Compatibility
- Combustion engines with an accessible ignition lead, single- and multi-cylinder
- On multi-cylinder engines a pickup at one ignition lead is sufficient
- All versions of the CUMPAN Cockpit Assistant
- Display units from other manufacturers with an input for a pulsed 12 V square-wave signal
- Not suitable for engines with pencil ignition coils
Technical Data
- Signal pickup: inductive at the ignition lead
- Output signal: pulsed 12 V square-wave signal
- Operating voltage: 9–15 V DC
- Current consumption: 1.5 mA at 12 V
- Temperature range: -20 °C to +70 °C
- Connection: blade connectors
- Housing: potted, water- and vibration-resistant
- Dimensions: 24×23×8 mm excluding cables
- Weight: 28 g
In the box
- 1× RPM Signal Filter with connection leads
- 1× ACC splitter for tapping the switched 12 V supply
- 1× butt connector for the signal line
- 2× cable ties for attachment to the ignition lead
