NovaOS for the MHO934
The Rigol MHO934 is a 350 MHz, 4-channel, 12-bit, 4 GSa/s oscilloscope. It is the 350 MHz model of the MHO900. NovaOS is our own operating system for the MHO900 series, independent of Rigol: Linux 6.12 and an acquisition engine written from scratch, run in place of the stock Android 7.1, with Rigol's firmware kept installed beside it.
CH1Rigol MHO934 specifications
| Rigol's figure | MHO934 | Data sheet |
|---|---|---|
| Max. analog bandwidth (50 Ω and 1 MΩ, -3 dB) | 350 MHz (for any number of channels) | p. 9 |
| Calculated rising time under 50 Ω (10%-90%, typical) | 1 ns | p. 9 |
| No. of analog channels | 4 | p. 9 |
| Max. real-time sample rate | 4 GSa/s (single-channel), 2 GSa/s (half-channel), 1 GSa/s (all-channel) | p. 9 |
| Max. memory depth | Standard: 100 Mpts (single-channel); 50 Mpts (half-channel); 25 Mpts (all-channel). Optional: 500 Mpts (single-channel); 250 Mpts (half-channel); 125 Mpts (all-channel) | p. 10 |
| Input impedance | 50 Ω ± 1%, 1 MΩ ± 1% | p. 10 |
| Vertical resolution | 12-bit (4,096 digitalizing levels) | p. 10 |
| Function/arbitrary waveform generator (AFG) | 2-Channel, 100 MHz, 1 GSa/s (Opt.); 2-Channel, 50 MHz, 1 GSa/s (Opt.) | p. 9 |
| Display | 7-inch multi-touch screen, 1024*600 | p. 10 |
Rigol's own figures, copied from its MHO900 Series Data Sheet; each links to the page it is on.
CH2NovaOS on the MHO934
NovaOS runs daily on our MHO934. It is the unit NovaOS for the MHO900 is developed and measured on: every MHO figure and video on this site comes from it.
The MHO900 has two generator channels. NovaOS runs both, with a Bode plot on either, on our MHO934.
What NovaOS changes, measured on our MHO934 against Rigol's firmware on the same unit: the time to the scope screen, the waveform rate, the analysis and the decoders. MHO900 with NovaOS · core and add-ons against stock · MHO900 hardware.
CH3MHO934 and NovaOS
The MHO934 ships with Rigol's own system, Android 7.1 on Linux 4.4. NovaOS is a separate operating system: it installs beside Rigol's firmware and leaves it installed, one tap away, and it never writes the scope's bootloader, its calibration or your files. NovaOS is independent software, not made, endorsed or supported by Rigol.
NovaOS is not an MHO934 hack or unlock. It uses no option codes, licence files or patches to Rigol's software: its own engine drives the FPGA and front end directly. What NovaOS does on our MHO934 is above and on MHO900 with NovaOS. More in the FAQ.
Download NovaOS: when it opens, and how the install works.
CH4MHO934 on a network
We found several ways the stock firmware is exposed on a network, and we are reporting them to Rigol first; the details will be published once Rigol has had time to respond. Until then, keep a scope running the stock firmware off networks you do not trust.
NovaOS keeps SSH off unless you turn it on, and then takes only your keys; its web pages use HTTPS and a password set on each unit; and it sends nothing unless you turn that on. Our disclosure policy and how NovaOS is secured.
Other models
DHO802 · DHO804 · DHO812 · DHO814 · DHO914 / DHO914S · DHO924 / DHO924S · MHO954 · MHO984 · every instrument