Description
Embedded faults often appear on a bus before they appear on a rail. The Rigol DHO924 oscilloscope pairs four analog channels at 250 MHz with 16 optional digital channels, so one screen can show both. Lost in HCM lists it for rental and sale in Vietnam.
Analog and logic on the same screen
Mixed-signal debugging means comparing an analog waveform with logic states. The listing calls the 16 digital channels optional. With them, the Rigol DHO924 oscilloscope lets you watch a chip-select line while a sensor output settles. Without them, the four analog inputs still handle many bring-up tasks. In addition, the 7-inch touchscreen keeps both views in reach.
Figures from the listing
| Item | Listed value |
|---|---|
| Series | DHO900 |
| Analog bandwidth | 250 MHz |
| Inputs | 4 analog + 16 optional digital |
| Maximum sample rate | Up to 1.25 GSa/s (single channel) |
| Memory depth | Up to 50 Mpts (single channel) |
| Waveform capture | Up to 1,000,000 wfms/s (UltraAcquire) |
| Vertical resolution | 12 bit |
| Display | 7-inch 1024 x 600 capacitive touchscreen |
These values change with the enabled channels, the acquisition mode and the installed options. Check the current Rigol documents before you rely on one.
How channel count changes sampling
Sampling falls as you switch on more inputs. A single channel runs up to 1.25 GSa/s, dual-channel use gives 625 MSa/s, and all channels give 312.5 MSa/s. Memory follows, from 50 Mpts down to 10 Mpts. So a long capture of four signals trades sample rate for time. Plan the capture length before you pick the timebase.
Rent or buy the Rigol DHO924 oscilloscope
A firmware bring-up often needs a scope for a few weeks, not a few years. Rent it for that window, then buy if the lab keeps reaching for it. Lost in HCM quotes each unit on its own, so ask about probes, the logic option, decoders and firmware. The series photo shows a panel marked DHO924S, so check the label on your unit. Then request a quote from Lost in HCM. The Rigol site holds the official datasheet, and you can compare other oscilloscope listings or contact SMK Vietnam.
DHO924 questions
Can it decode serial buses?
The listing names serial-bus analysis as a use but does not say which decoders come with the unit. Name the buses you need, and ask Lost in HCM to confirm the licenses.
How much memory do I get with all four channels on?
Up to 10 Mpts. One channel reaches 50 Mpts and two channels reach 25 Mpts.
Does the quote include a logic probe?
The listing calls the 16 digital channels optional and names no probe. Ask Lost in HCM whether the option and its cable ship with your unit.
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