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RLVBMIM01 Mini Input Module

7 | 31/07/2009

Digital Inputs

The digital inputs are optimised to suit certain applications.

 Digital Input channel1 – Optimised for event marking due to its internal 100Kohm pull up resistor, with a simple switch that connects

the input pin to ground. The low state is below 4V so it can also be used a TTL pulse input, such as fuel flow

sensor inputs.

 Digital Input channel 2 – Optimised for a zero crossing AC input signal such as a Wheel speed signal or engine crankcase signal.

 RPM input, Digital input 3 – Optimised for low-tension ignition coil signals.

See the Specification table for full digital input specifications

The Name and Units for each Digital input channel can be configured. There are also other modes and options configurable depending on the Digital Input

channel.

Digital Input 1

Digital Input 2

Digital Input 3

Name

Units

Mode – event marker/frequency/pulse

Mode – frequency/pulse

Pulse/Rev

Scale

Edge – (only in frequency mode)

Active – (only in event marker mode)

Mode – Changes the input mode of the digital channel.

Edge – This contains two options that determine whether the frequency is measured from the RISING or FALLING edge of the signal.

Active – High or Low, this determines whether the input trigger state is logged in an inverted or non-inverted state, see the table below.

Logged Trigger State

Input State

Active - Low

Active - High

Low

High

Low

High

Low

High

1 2 3 4 5 6 7 8 9 10 11 12 ... 29 30

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