User manual

R = Voltage drop / Fixed Current Output = U / I
Resistive sensors are very common to measure various physical quantities.
With the help of a temperature-dependent resistor (PTC, NTC), a temperature can be measured indirectly by
measuring the voltage drop across the resistor.
The constant current sources can output a maximum voltage of about 3 Volt.
This puts a limit to the usable measurement range.
For the 200A source, it is about 15 kOhm (= 3 Volt / 200A).
For the 10A source it is about 300 kOhm (= 3 Volt / 10A).
Reading more than one analog-in-channel
If you measure more than one analog-in-channel it is necessary to increase the interchannel delay to >1000s
(1500s is recommended), because the source has a high impedance and because of some switching effects.
Specifications - Constant Current Source 200µA
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