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avnrdf

Analog Discovery 2 AWG2 Output Issue

Question

I encountered a peculiar issue when using AWG2 of the Analog Discovery 2.

Physical connections were as follows:

 1+ to W2

 1- to GND

When AWG2 is set to generate a sine wave voltage <= 1.00V, the output seems to be a clipped version of a voltage referenced to +5V (USB +ve rail).

At any voltage above that (>1.001), the output is fine. 

I'm using Waveforms 3.8.2 on a 64bit Win10 PC.

I've  attached a screen capture:

2018-07-19_16-33-58.thumb.gif.58aec0724aec7eae29598ac7e0312a1f.gif

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2 answers to this question

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Hi @avnrdf

I suppose the AWG2 is wrongly calibrated at low gain. Wavegen 2 LG additive parameter should be a few millivolts (like 0.005, 0.016) but on your device is around 5.5

Open WaveForms/ Settings/ Device Manager/ Calibration and select Reset/Load factory

image.png.351bd32d4cf9140a745b1dbdf71117fc.png

image.png.87ba55dc5bf4f3b267e6a03c61696abe.png

 

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