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MoTeC Overview 11

Input Voltage Range

The measurable input voltage range is 0 to 15 Volts. This allows selection

from a wide range of sensors.

Specifications

For full specifications see Appendix D: Input Characteristics.

Wide Band Lambda Input

The single high accuracy, fully temperature compensated Wide Band Air Fuel

Ratio measurement input can be used if the Lambda Option is enabled.

This input connects directly to a MoTeC 4 wire Wide Band Lambda Sensor

and is accurate to 1.5% up to 1.2 Lambda under all load and temperature

conditions.

Note that this is the Bosch LSM sensor and not the 5 wire Bosch LSU sensor.

Note that NTK Lambda sensors should be connected to an Analog Voltage

input via the appropriate amplifier.

Switch Inputs

The 2 switch inputs are generally used for the external switches required to

operate the SDL display. They can also be connected to a brake switch or

other switch.

These inputs have a 4700 ohm resistor connected internally from the input pin

to the 5V sensor supply so that a switch can be simply connected between

the input pin and 0 volts.

Specifications

For full specifications see Appendix D: Input Characteristics.

Digital Inputs

The 2 digital inputs are identically to the switch inputs except that they include

the following additional measurement methods:

• Frequency: The frequency of the input signal is measured

• Period: The time between successive pulses is measured

• Pulse width: The low time of the pulse is measured

• Count: Counts the number of pulses

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 69 70

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Motec SDL Manual do Utilizador Página 13