User manual

GPX Pro 30
© 2009 XT Racing
battery). This is done with the RED WIRE OF CABLE “A”. If you connect to the vehicle’s 12V, then
the GPX will always be powered by your vehicle. (The internal battery will be continuously
charged.) So that the GPX does not drain the vehicle’s battery when the vehicle is turned off, it is
preferable to connect the 12V power wire to the GPX via a switched power point so that when the
vehicle is turned off, the 12V is not supplied to the GPX. If this is not feasible, it is recommended
that you disconnect CABLE A when you are done racing.
Analog vs. Digital Signals
Analog signals typically have a range of from 0 to 5 volts. These signals generally can have any
value in that range. Typical examples of analog inputs would be engine coolant temperature,
suspension via linear potentiometers, or throttle position. In addition, a switch input (on/off
type of signal) (e.g., idiot oil warning light) may be connected to any of the analog inputs.
Digital signals are pulsed inputs (e.g., RPM or wheel speed sensor). The GPX can handle digital
signals which have swings in the 0-5V range to signals with swings in the 0-12V range.
GPX DAQ Inputs
Analog/digital input # 1 is the BROWN WIRE OF CABLE “A”. It may be used as either an analog or
digital input.
Analog input # 2 is the YELLOW WIRE OF CABLE “A”. Analog only.
Analog input # 3 is the BLUE WIRE OF CABLE “B”. Analog only.
Analog input # 4 is the GREEN WIRE OF CABLE “B”. Analog only.
Digital input # 5 is the GREEN WIRE OF CALBE "A". Digital only.