MoTeC ADL EDL - Manual (Page 19)

MoTeC Overview 17
Specifications
For full specifications see Appendix D: Input Characteristics.
Digital Inputs
The 4 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
• Beacon: For connection of a lap beacon
Options
Note that the number of inputs that are available depends on which options
are enabled. See Appendix B: Options Summary for details.
Specifications
For full specifications see Appendix D: Input Characteristics.
Speed Inputs
The 4 Speed Inputs are identical to the Digital Inputs except that they can
also be configured to suit Variable Reluctance (Magnetic) sensors such as
some wheel speed sensors. Because the amplitude of the signal from these
sensors varies with speed of rotation, variable trigger levels are required,
which must vary with the frequency of the input signal.
The Speed Inputs can also be used with Hall Effect type wheel speed
sensors.
• Note that Inputs 1 & 2 use common trigger thresholds and a common
pullup resistor switch, as do Inputs 3 & 4, therefore the same type of
sensors need to be used on each pair of inputs.
• Note also that the Pulse Width measurement method measures the high
time of the pulse rather than the low time as measured by the Digital
Inputs.