The Rigol DHO924S oscilloscope (250 MHz, 4 channels, 12-bit) running NovaOS: Rigol's specifications and what we measured on our unit, against Rigol's own firmware.
| Analog bandwidth (-3 dB) | 250 MHzData sheet, p. 9 |
| Rise time (10% to 90%, typical) | 1.4 nsData sheet, p. 9 |
| Channels | 4 input analog channels; 16 input digital channels (required to purchase the PLA2216 logic analyzer probe)Data sheet, p. 9 |
| Max. sample rate | 1.25 GSa/s (single-channel), 625 MSa/s (dual-channel), 312.5 MSa/s (full-channel)Data sheet, p. 9 |
| Max. memory depth | 50 Mpts (single-channel), 25 Mpts (dual-channel), 10 Mpts (full-channel)Data sheet, p. 9 |
| Max. waveform capture rate | 30,000 wfms/s (Vector Mode); 1,000,000 wfms/s (UltraAcquire Mode)Data sheet, p. 9 |
| Vertical resolution | 12 bitsData sheet, p. 9 |
| Display | 7-inch capacitive multi-touch screen, gesture enabledData sheet, p. 22 |
| Display resolution | 1024x600Data sheet, p. 9 |
| Built-in generator (AFG) | 1 channel; max. frequency 25 MHz; sample rate 156 MSa/s; vertical resolution 14 bitsData sheet, p. 19 |
| Interfaces | USB2.0 Host, USB2.0 Device, LAN (10/100 Base-T, supporting LXI-C), HDMI 1.4, AUX OUTData sheet, p. 23 |
| Power supply | Type-CData sheet, p. 24 |
Rigol's own figures, as its documents state them; each links to the page it is on.
The S models (DHO914S and DHO924S) are the ones with the built-in generator and the Bode plot.
Draws electrical signals as a picture of voltage over time, so you can see and measure what a circuit is really doing.
The DHO800/900 unit NovaOS is developed and measured on: the DHO figures and videos on this site come from it.
NovaOS runs on this scope as its operating system, and Rigol's firmware stays installed (Restart into Stock Firmware starts it). It drives the acquisition FPGA, the front end and the generator with its own engine. Every measurement below was made on this unit.
Our own measurements on the bench, each with how it was measured.
10, 25, 50, 100, 125 and 150 MHz, each within 10 % of its label on every channel: the analog front end's own filter, measured channel by channel.
How it was measuredCuts at 20-23 MHz under NovaOS; Rigol's own setting of the same filter cuts at 26-31 MHz.
How it was measured42,687 under NovaOS against 16,830 on Rigol's firmware 00.01.04, both counted on the trigger output's pulses: 2.5 times as many.
How it was measured3,671 under NovaOS against 1,121 on Rigol's firmware: 3.3 times as many.
How it was measuredWithin one sample in the raw record; on Rigol's firmware it comes up to 40 ns early.
How it was measuredFrom 1 kHz to 25 MHz its level matches Rigol's firmware within 0.001 Vpp; a square's rise time is 9.8 ns against 9.5 ns.
How it was measuredThe scope screen 8.9 s after the kernel starts; Rigol's firmware on the same unit takes 44-50 s.
How it was measuredForum threads worth reading before you buy one.
Back to the bench: everything NovaOS is developed and measured with.