Channel B noisy on a 3205

 
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weihong1988
Newbie


Joined: 05 Dec 2007
Posts: 1

PostPosted: Wed Dec 05, 2007 4:28 am    Post subject: Channel B noisy on a 3205 Reply with quote
I have a 3205, and this morning when using it i observed that channel B produces a very weird noise signal of +/- 20 mv. Any measurements taken using channel B was invalid due to the noise signal, such as a square wave from a function generator. Strangely, the scope calibration signal from the 3205's internal signal generator was displayed OK.

I tried shorting the probe tip with the clip, yet i still see +/- 20mv of noise (no change). Unplugging the probe from channel B, and the noise goes away. It may be the probe, but i swapped channel A's probe with B and the noise was still there. Only channel B has this problem. Any help on this will be appreciated.
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picojohn
Site Admin
Site Admin


Joined: 11 Jun 2007
Posts: 311

PostPosted: Wed Dec 05, 2007 3:45 pm    Post subject: Reply with quote
Hello weihong1988,

If the problem is present on one channel only, then it is quite possibly hardware related.

If you recently purchased the unit, then you should contact the supplier or, should you wish to return the unit to us, then please send an email to support@picotech.com with the following details:

Contact name
Address
Telephone
email
Unit & Serial No.
Brief problem summary

We will then issue a returns number and address.

Regards
John
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