1.2 External Sensors
The DL1 allows you to attach several external sensors for logging. These can be frequency or analogue inputs. There are 4 frequency inputs, generally used for shaft or wheel speeds, and 8 analogue channels (12v input). The DL1 is supplied with connectors for the external inputs. For each input, the positive wire connects to the input, and the ground to one of the ground connectors. If the sensor needs a 5v reference supply, one of the pins on the analogue connector side supplies this. You can have more than one sensor attached to the ground and reference output.