| Products > Test Equipment |
| Rigol HDO1000 and HDO4000 12bit oscilloscopes launched in China |
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| TurboTom:
I guess the differences in RMS noise level are just normal tolerance. @Core probably got particularly lucky with his, on mine I also find the noise to be in the 23µVrms ballpark like many others, see screenshots. I also checked the 1V/div noise as @egonotto requested. And one special screenshot for our friends from Ukraine ;). |
| egonotto:
Hello, thanks TurboTom, have you 50 Ohm terminators on inputs as core has? Best regards egonotto |
| thm_w:
No protective film at all on it. I don't mind but it is unusual, companies usually like to cover everything in plastic bag/film. Stock bandwidth measured: ~115MHz 200MHz option: 396MHz (1 channel), 320MHz (2 channel) Anyone see with 2 channels on it seems to get way more vertical jitter? The waveform looks terrible, even at lower frequencies. Maybe an issue with my source or cable, odd it doesn't show up when on single channel though. Will try again later with a proper source. |
| TurboTom:
--- Quote from: egonotto on December 07, 2023, 01:10:29 am ---Hello, thanks TurboTom, have you 50 Ohm terminators on inputs as core has? Best regards egonotto --- End quote --- Yes I had both inputs (CH1 and 4) "terminated" with 50 Ohm, yet via a BNC -> SMA adapter since most of my RF stuff - and thus also the "good" terminators - is SMA. I may check the total input voltage range of the scope at that sensitivity setting (i.e. how far the converter will linearly digitize beyond the visible vertical range) to approximate ENOB... @thm_w: The jitter is rather aliasing due to frequency components at the edges of the input signal beyond Nyquist. This "misleads" the sinx/x waveform reconstruction engine and results in the visible jitter effect. You will find this effect on any digital scope without a proper filter in front of the sampling engine. It's probably the price we've got to pay for today's scopes where the "usable" frequency range approaches two thirds of the Nyquist frequency. |
| RobbiOne:
I can't get any v2.12 FW for DHO1000 from international Rigol web site https://supportint.rigol.com. Just the v2.11 (August 2023) from Rigol EU (Germany). Is it a special version available only for some country? |
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