Speed inputs – MoTeC ADL EDL User Manual

Page 58

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56 Appendices

Maximum : 3.2 sec

Speed Inputs

Can be used in two modes : Hall or Magnetic.

In Hall mode a 4700 ohm pullup resistor is connected to 5V and the trigger
levels are fixed.

In Magnetic mode the pullup resistor is disengaged and the trigger levels can
be varied depending on the input frequency.

Note that the Hall and Magnetic modes must be activated in pairs, ie inputs 1
& 2 must have the same mode and level settings, similarly inputs 3 & 4 must
have the same mode and level settings.

Update Rate: 100 times / second

Filter Time Constant: 25usec

Speed Input Measurement Methods

Frequency

Resolution 0.1 Hz

Maximum Frequency : 3200 Hz

Falling Edge Triggered

Period 1 usec

Measures period between falling edges

Resolution : 1 usec

Maximum : 32 msec

Period 100 usec

Measures period between falling edges

Resolution : 100 usec

Maximum : 3.2 sec

Pulse Width 1 usec

Measures pulse high time

Resolution : 1 usec

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