MoTeC ADL EDL - Manual (Page 17)

MoTeC Overview 15
sensor supply. Additionally, on/off switch signals may be connected, which
may also require an external pullup resistor.
Options
Note that the number of inputs that are available depends on which options
are enabled. See Appendix B: Options Summary for details.
Measurement Methods
These inputs can be configured to use several measurement methods to suit
the various types of sensors:
• Absolute Voltage: The sensor voltage is independent of the sensor supply
voltage
• Ratiometric Voltage: The sensor voltage is proportional to the 5V sensor
supply voltage
• Variable Resistance: The sensor resistance can be entered directly.
• On/Off : The voltage for on and off can be defined
Input Voltage Range
The measurable input voltage range is 0 to 15 Volts. This allows selection
from a wide range of sensors.
Specifications
For full specifications see Appendix D: Input Characteristics.
Analog Temp Inputs
The 8 Analog Temp inputs are identical to the Analog Voltage inputs, except
that they contain a 1000 ohm resistor which is connected internally from the
input pin to the 5V sensor supply. This allows the Analog Temp inputs to be
used with two wire variable resistance sensors such as:
• Two wire thermistor temperature sensors
• Two wire variable resistance pressure sensors
Some voltage output sensors can also be used if they can drive the 1000 ohm
resistor without causing an error in their reading (eg MoTeC Thermocouple
Amplifier). Additionally, on/off switch signals may be connected.