aioscilloscope / NovaOS side by side / MHO900 vs SDS800X HD

NovaOS on the MHO900 vs the SDS800X HD

NovaOS, our own operating system, runs on both: here are the Rigol MHO900 and the Siglent SDS800X HD as NovaOS sees them, on the units we own, an MHO934 and an SDS814X HD.

These are NovaOS's figures, on our own units, with our own software. Every figure here is NovaOS running on the units we own, dated, and shown only when both were measured the same way within a day of this page's build (2026-10-17). NovaOS is in active development: these figures, and how much of each scope's hardware NovaOS uses, will change as we keep optimising it and find how to get the most out of the hardware. They are not a verdict on any maker's hardware, or on its own firmware. NovaOS is independent software, not made or endorsed by Rigol or Siglent.

CH1The hardware NovaOS runs on

The unit NovaOS runs on in each family, from NovaOS's own hardware table: the limits NovaOS works to on that model, with no software option tier in between. The last rows are where NovaOS stands on each.

	Rigol MHO934our MHO900	Siglent SDS814X HDour SDS800X HD
Analog channels	4	4
Rated bandwidth	350 MHzMHO900 Series Data Sheet, p.9	100 MHz
Vertical resolution	12-bit	12-bit
Sample rate, one channel	4 GSa/s	2 GSa/s
Record memory NovaOS can use	500 Mpts	100 Mpts
50 Ω input	yes	no
Built-in signal generator	yes, 2 outputs	no
Logic-analyser input	yes	no
Processor	RK3399	Zynq UltraScale+ MPSoC
NovaOS draws the screen	on the GPU	in software
Starts NovaOS	done	done
Acquisition under NovaOS	done	in progress
NovaOS's scope system	done	in progress

From NovaOS's own hardware table, except where a data sheet page is named. Other models in a family can differ in channels, bandwidth and generator: the MHO900 page and the SDS800X HD page list them.

CH2NovaOS's feature coverage

Each family's own user guide, checked feature by feature against NovaOS on that family. The guides differ, so the totals are not one list; each column counts its own maker's.

Features in the guide	MHO900	SDS800X HD
NovaOS has it	253	84
NovaOS has part of it	59	115
Not in NovaOS yet	0	101
Does not apply	1	2

MHO900: the 313 features of Rigol's MHO900 User Guide; SDS800X HD: the 302 features of Siglent's SDS800X HD User Manual. Feature by feature for the Rigol scopes: compatibility.

CH3Measured the same way on both

Not yet measured. Nothing has been measured the same way on both within a day of this page's build (2026-10-17), so this page compares no figures yet; it shows them as soon as both are.

What NovaOS has measured on each, with dates, methods and raw data: NovaOS vs stock on the MHO900 (2 figures from the last day) and NovaOS vs stock on the SDS800X HD (7 figures from the last day).

CH4Which to choose

Both units have 4 analog channels.
The MHO934 is rated at 350 MHz and the SDS814X HD at 100 MHz.
With one channel on, the MHO934 samples at up to 4 GSa/s and the SDS814X HD at up to 2 GSa/s.
Only the MHO934 has a built-in signal generator.
Only the MHO934 has a 50 Ω input.
Only the MHO934 has a logic-analyser input.
On the MHO900, NovaOS starts, acquires and runs its own scope system.
On the SDS800X HD, acquisition and the scope system are still in progress.
NovaOS has 253 of the 313 features in Rigol's MHO900 User Guide (59 more partly). NovaOS has 84 of the 302 features in Siglent's SDS800X HD User Manual (115 more partly).
Choose by the hardware you need: NovaOS's side of this page changes as NovaOS is optimised.

More on each: NovaOS for the MHO900 · NovaOS for the SDS800X HD · every pair · every instrument.