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10/25/2016 - DOCUMENT NUMBER: 10-2500
© 2016 AEM Performance Electronics
AQ-1 DATA LOGGER
Wiring: Analog Input 1 - 4
This class of inputs is suitable for logging the output from a variety of sensors which have a continuously variable (analog)
output between 0 and 5 Volts. A software selectable 2.2kOhm pull-up resistor is available.
Typical Automotive 0-5V Analog Sensors
·
Throttle Position Sensor (TPS)
·
Accelerator Pedal Position Sensor (APP)
·
Manifold Absolute Pressure Sensor (MAP)
·
Shock Travel Sensor
·
Gear Position Sensor (GPS)
·
AEM UEGO/AFR, Pressure, Temperature Gauges with 0 - 5V
Outputs
·
Mass Airflow Sensor (MAF) *Analog type only!*
·
Engine Coolant Temperature (ECT)
·
Engine Oil Temperature (EOT)
·
Air Inlet Temperature (AIT)
·
...and many more!
The majority of these sensors are either "two wire" or "three wire" type sensors. Typically, these sensors will have a 1)
signal ground wire, 2) signal wire, and sometimes 3) power (5V) wire. Wiring the sensor into the analog input of the AQ-1
logger is a matter of connecting one of the logger's analog inputs to the "signal" wire of the sensor. Please refer to the
documentation that came with your sensor, gauge, or the factory service manual for your vehicle to locate and identify the
appropriate signal wire.
Software Selectable 2.2kOhm Pull-Up Resistor
Analog inputs 1-4 are the only AQ-1 inputs that are equipped with a pull-up resistor. Pull-up resistors are required when
using two wire sensors (RTD, thermistor, temperature sensors, e.g. ECT, EOT, AIT) that
ARE NOT
already wired to a
second data system or ECU.
Yes, you need a pull-up resistor when
You want a log a pre-existing AIT sensor that's already wired to your engine management system or ECU.
No, you don't need a pull-up resistor when
You want to log an AIT sensor that you purchased from a third party, like AEM, and installed in your intake and is not
connected to any other ECU, EMS, logger.
Wiring: Analog / Frequency Input 4 - 8
This class of inputs is suitable for logging the output from a variety of sensors which have a continuously variable (analog)
output or, optionally a DC frequency, between 0 and up to 16 Volts. These inputs do
not
have any pull-ups available.
Typical Automotive 0-5V Analog Sensors
·
Throttle Position Sensor (TPS)
·
Accelerator Pedal Position Sensor (APP)
·
Manifold Absolute Pressure Sensor (MAP)
·
Shock Travel Sensor
·
Gear Position Sensor (GPS)
·
AEM UEGO/AFR, Pressure, Temperature Gauges with 0 -
5V Outputs
·
Mass Airflow Sensor (MAF) *Analog type only!*
·
Engine Coolant Temperature (ECT)
·
Engine Oil Temperature (EOT)
·
Air Inlet Temperature (AIT)
·
...and many more!
The majority of these sensors are either "two wire" or "three wire" type sensors. Typically, these sensors will have a 1)
signal ground wire, 2) signal wire, and sometimes 3) power (5V) wire. Wiring the sensor into the analog input of the AQ-1
logger is a matter of connecting one of the logger's analog inputs to the "signal" wire of the sensor. Please refer to the
documentation that came with your sensor, gauge, or the factory service manual for your vehicle to locate and identify the
appropriate signal wire.
No Pull-Up Resistor Available
Analog inputs 4-8 do not have any pull-up resistor available. Two wire sensors may only be connected to this input if they
are connected to another data system or ECU within which there is a pull-up resistor.
Typical Automotive Frequency Type Sensors
·
Engine Speed / Tachometer (RPM)
·
Vehicle Speed Sensor (VSS)
·
Mass Airflow Sensor (MAF) Frequency type
·
Flow Sensor
·
Flex Fuel Sensor
·
Hall Effect Sensor
