Hi, I'm a new member of the forum and I noticed a thread about Rigol scopes. I'm having a problem that I can't seem to resolve. I've called Rigol, but have not received an answer.
Problem: with a 3.875 MHz + - few hundred Hz unmodulated clean carrier at 1.0ms/div horizontal and 500mV/div vertical, I observe the pattern in the link/attachment Rather than a clean unmodulated carrier, this is what I see. I am told that this is an aliasing problem. Is there any fix/adjustment for this? I would like to maintain the current sweep rate of 1.0 ms/div and must maintain the frequency 3.875 MHz. I am using the scope to view amplitude modulation on the carrier.
Buzz
http://forum.allaboutcircuits.com/attachment.php?attachmentid=54387&stc=1&d=1365548245
Problem: with a 3.875 MHz + - few hundred Hz unmodulated clean carrier at 1.0ms/div horizontal and 500mV/div vertical, I observe the pattern in the link/attachment Rather than a clean unmodulated carrier, this is what I see. I am told that this is an aliasing problem. Is there any fix/adjustment for this? I would like to maintain the current sweep rate of 1.0 ms/div and must maintain the frequency 3.875 MHz. I am using the scope to view amplitude modulation on the carrier.
Buzz
http://forum.allaboutcircuits.com/attachment.php?attachmentid=54387&stc=1&d=1365548245
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