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Is my analog discovery working correctly?


anil
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Make sure to connect the AWG1 (W1, solid yellow) to Scope Channel 1 Positive input (1+, solid orange).

In the picture it seems that AWG2 (W2, white yellow) is connected to scope.

 

PS: In case you are working with higher frequency signals, twisting the scope + with - and awg with gnd wires helps in radiant noise rejection.

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Thank you for replying.

Where should I put it - is it a sleeve that snaps around the cable and should it be close to the computer, or close to the Discovery? If you have a picture that would be great.

 

That is a ferrite bead (RF choke) for the USB cable to filter high frequency noise signals between the computer and device.

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Theoretically it should be laced close to the computer side of the cable to filter the high frequency noise generated by this, to prevent the USB cable acting as RF emitting antenna.

 

But I don't think it makes too much difference with nowdays computers and laptops, even if you don't use ferrite bead. For instance fluorescent bulbs (at low frequency) are much stronger radiation sources.

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