▪ The sensor has a nonlinear behaviour
▪ Use characteristic curve for linearization
▪ Input voltage is the ratio between pull‐up resistor and thermistor
Pin
Thermistor
+5V
3 kOhm
1. Click ‘Measurement Sources’ in the Toolbox.
2. Expand the list of ‘I/O Channels’ by clicking on ‘+’ in the DDU 8 Project Tree.
3. Drag the ‘Characteristic Curve’ analogue signal source from the Toolbox and
drop it on the desired analogue input channel in the DDU 8 Project Tree. A
‘Characteristic Curve Wizard’ opens.
4. To activate the internal pull up‐resistor, check the box.
The DDU 8 pull up‐resistor is used to get a 5V signal at the analogue channel
of the DDU 8.
It allows you to use a push‐button.
The fixed value of the internal pull up‐resistor is 3010 Ohm. If using an addi‐
tional external pull up‐resistor, set up the overall resistance.
5. Click ‘Next’ when done.
The second part of the ‘Sensitivity/Offset Wizard’ opens.
10 | Analog and Frequency Inputs
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DDU 8 Manual
Bosch Motorsport
