Products > Test Equipment
Siglent SDS1104X-E In-Depth Review
kimera:
--- Quote from: Performa01 on July 07, 2024, 05:34:35 am ---
--- Quote from: kimera on July 07, 2024, 04:03:38 am ---Can I convert dbm to dbc?
--- End quote ---
Basically, dB is a relative measure and the additional letters just signify the reference.
dBc means “dB below Carrier”; as a consequence, it is just the difference between the spectral lines of the fundamental and any harmonic signal.
That means, you can measure in whatever units you find convenient (dBm, dBV) and can always easily calculate the difference between carrier (which is the fundamental in the case of distortion measurements) and any of the distortion products (harmonics).
Here is an old screenshot that demonstrates that you can even make the scope calculate the differences for you:
--- End quote ---
Can you please show me an example of how to calculate it in THD%?
Thank you
Curious:
Hello,
I just started getting familiar with the SDS1104XE, mostly loving what I see so far. One capability has me stumped, though. If there is a good capture, I generally want to save up-to 4 channels for the record. I want to save the whole acquisition, not just a raster image of the screen, in case I need to investigate the waveforms more carefully on the scope in the future.
SDS1000XE series user manual page 153 for "Load the specified type of file in the external USB storage device." item 3 says "Press the Type softkey to select Setup or Waveform." In reality, type options are setup, reference, Factory Defaults, security clear" NO Waveform.
So I try save/recall type "reference", but find 1. have to save each channel separately in its own filename, 2. It's a low resolution copy.
I believe type binary, csv or matlab save ALL waveforms, but then user manual pages 148-149 have the words "The recall of binary/csv/matlab file is not supported"
On my old, slow Rigol DS1052E, I simply saved as type "waveform". Done.
Stumped. How do I save up-to 4 channels for future investigation on the scope?
PS software version 6.1.33 (and can't find changelog)
Thanks!
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