VBOX 3iSL User GuidePage 20 of 4901/12/2011Analogue and Digital outputs (AD1 & AD2)The AD1 and AD2 connectors each have 1 analogue voltage and 1 digital output. The digital output on connector AD2 is a frequency/pulse output corresponding tovelocity. The pulse per meter range is adjustable in software. The digital output on connector AD1 is a simple on/off state output. This digital output can beassociated with any of the data channels being logged by the VBOX. A threshold level can be set for the selected data channel where a true condition gives a 5voutput and a false condition gives a 0v.i.e. Data channel –Speed, threshold 40Km/h. When speed is >40 output = 5V, speed , 40 output = 0VA hysteresis and tolerance value can also be associated to this condition.The default function of this digital output is to indicate the current logging status of the VBOX.The analogue outputs on connectors AD1 and AD2 are both user configurable. For example, analogue output 1 could be configured to output velocity whileanalogue output 2 might be configured to output lateral acceleration. The voltage range of both analogue outputs is 0 to 5v DC.