User manual

GPX Pro 34
© 2012 XT Racing
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, you might consider
disconnecting 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
All of the external channels of the GPX Pro 4/8 can be configured as either an analog input or a
digital input
Analog/digital input # 1 is the BROWN WIRE OF CABLE “A”.
Analog/digital input # 2 is the YELLOW WIRE OF CABLE “A”.
Analog/digital input # 3 is the GREEN WIRE OF CABLE “A”.
Analog/digital input # 4 is the BLUE WIRE OF CABLE “A”.
Analog/digital input # 5 is the BROWN WIRE OF CABLE “B”. GPX Pro 8 only.
Analog/digital input # 6 is the RED WIRE OF CABLE “B”. GPX Pro 8 only.
Analog/digital input # 7 is the GREEN WIRE OF CABLE “B”. GPX Pro 8 only.
Analog/digital input # 8 is the BLUE WIRE OF CABLE “B”. GPX Pro 8 only.
5V Reference voltage
The GPX Pro 8 has a highly accurate 5V reference output voltage on the YELLOW WIRE OF CABLE
"B". It can supply approximately up to 25 ma of current. It is typically used to power suspension
potentiometers and thermistors.