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Input Connections
Digital Inputs
These Inputs are able to swing above and below the reference ground meaning they can see Positive
Voltage as well as Negative. Fully adjustable trigger thresholds for the frequency decoding is
supported on these pins as well as optional 3k pull-ups to 5v. These are configurable via a USB
connection to X20 (see page 14).
Example of sensors normally used on these Inputs are:
-
Reluctor Crank and Cam Sensors / ABS Sensors for wheel speed
-
Hall Sensors
Pin Number
Input
A3
DIG1
Optional 3k Pull-up
A12
DIG2
Optional 3k Pull-up
A4
DIG3
Optional 3k Pull-up
A13
DIG4
Optional 3k Pull-up
Voltage Inputs - AV Inputs
These Inputs are able to sense a Voltage level but not offer Frequency detection, some of these
inputs support a 3k Pull-up option which is turned on via a USB connection, explained on page 14.
Example of sensors which normally use on these Inputs are:
-
Manifold Pressure sensors
-
Throttle Positions
-
Oil Pressures
-
Thermistor (requires 3k pull to be enabled)
Voltage Inputs are not just limited to the above they can also be used for any sensor which outputs a
0-5volt signal.
Pin Number
Input
A5
AV1
Optional 3k Pull-up
A14
AV2
Optional 3k Pull-up
A6
AV3
A15
AV4
A7
AV5
A16
AV6
B5
AV7
Optional 3k Pull-up
B13
AV8
Optional 3k Pull-up
B6
AV9
Optional 3k Pull-up
B14
AV10
Optional 3k Pull-up
B7
AV11
Optional 3k Pull-up
B15
AV12
Optional 3k Pull-up
B3
AV13
B11
AV14
B4
AV15
B12
AV16