| Electronics > Beginners |
| New Rigol User Question |
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| LewisRRX:
Hi Folks, just got my new and first oscilloscope, a Rigol 1054Z. I've run through the probe compensation for all four channels and noticed that whilst channels 1,2 and 4 stay at a steady 1Khz, channel 3 wavers a little from 1Khz to 998Hz. I've swapped out the probe and done a little testing and it seems to be the channel rather than a faulty probe. Question is, should I be concerned, is this an issue? I just don't know! Many thanks and cheers! Lewis |
| ataradov:
I would say it is normal. that 1 kHz signal is not precisely calibrated, so it is possible that other 3 channels are off, and this one is spot on. Try moving the trigger level too, see if it makes any difference. |
| alsetalokin4017:
A man with a watch knows what time it is. A man with two watches is never really sure. Still, it might be a useful exercise to let the scope warm up for 30 minutes then run the self-cal routine, and then test to see if CH3 settles down and marches in line with its buddies. |
| LewisRRX:
Many thanks for the replies chaps, I have done the self calibration today but it's still the same. I suspect that it doesn't really matter, especially for the simple hobbyist type use I'll be subjecting it to, it's just a bit annoying! It stays on 1Khz for most of the time and just flashes fleetingly to 998Hz |O so I guess it wouldn't have an important effect on a real life measurement. :-// Thanks again, any more advice and suggestions gratefully received! :-+ Cheers Lewis |
| ataradov:
Scope frequency measurement is not very accurate no matter what. It is there to give you a rough idea of what the frequency is at a glance, nothing more. |
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