Thank you for your post.
Right, the resolution we are referring to is the vertical or voltage resolution.
This is calculated in the following manner:
If the voltage range = Â±2500mV, this gives you an effective range of 5000mV bottom to top. This is then divided by the digital resolution, this digitisation will convert an analogue voltage number to a binary number that can be handled by a PC. The resolution is calculated by dividing the effective voltage range by the quantization levels.
Volt steps = Voltage range/2^bit resolution (quantization level).
Our example as above:
4.768uV = 5000mV / 2^20 (1048576)
Higher bit resolution means a much smaller fraction of measurement graduations. But this also takes more time to resolve. This high resolution is intended for very small signal changes moving slowly.
Try this Wikipedia link:http://en.wikipedia.org/wiki/Analog-to-digital_converter
I hope this helps.
Michael - Tech Support
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