Rigol DS1054Z vs Siglent SDS1104X-E: Budget 4-Channel Oscilloscopes for Embedded Engineers

Recent Trends in Entry-Level Instrumentation

Embedded engineers working on mixed-signal designs increasingly need at least four channels for debugging protocols like SPI, I²C, and UART simultaneously. Both Rigol and Siglent have responded by offering sub‑$500 four-channel oscilloscopes that compete on bandwidth, sample rate, and feature set. Recent firmware updates from both vendors have improved FFT performance and added serial decode options, narrowing the gap between hobbyist tools and professional test equipment.

Background: The Legacy of the DS1054Z and the Rise of the SDS1104X-E

Rigol’s DS1054Z has been a staple in low-cost labs since its introduction, offering 50 MHz bandwidth (upgradeable in software to 100 MHz) and a deep memory of 24 Mpts. Siglent’s SDS1104X-E arrived later with a native 100 MHz bandwidth, a higher 1 Mpts memory per channel, and a more modern user interface. Both use a 12‑bit ADC equivalent resolution through averaging, but they differ in acquisition architecture and UI responsiveness.

User Concerns and Key Trade-Offs

• Bandwidth vs. cost: The DS1054Z can be unlocked to 100 MHz via a widely known third-party hack, but doing so may void warranty. The SDS1104X-E is native 100 MHz out of the box, reducing uncertainty.
• Memory depth: Rigol offers 24 Mpts per channel, while Siglent provides 1 Mpts standard (expandable with optional upgrades). Deep memory helps capture long time windows at high sample rates, but can slow down UI navigation on the Rigol.
• User interface and responsiveness: The Siglent’s touch-screen and dedicated controls are generally rated as faster and more intuitive, though the Rigol’s button-based menu is considered reliable for repetitive tasks.
• Serial decode and analysis: Both models include basic serial decoding (I²C, SPI, UART) in their standard firmware, but the Siglent offers a richer set of trigger options and bus analysis tools as standard features.
• Firmware stability and support: Rigol has a mature community with extensive troubleshooting resources. Siglent has released multiple updates to address early‑production issues, but some users still report occasional glitches.

Likely Impact on Embedded Engineering Workflows

For embedded engineers who need reliable four‑channel viewing without breaking a budget, both scopes cover common use cases—power supply sequencing, sensor bus analysis, and timing verification. The choice often hinges on whether deep memory or UI speed is more critical. Labs that buy in bulk may standardize on one platform to simplify training and probe compatibility. Third‑party accessories and software (e.g., Python‑based waveform capture) remain available for both, extending their utility beyond the base feature set.

What to Watch Next

• Firmware maturity: Future updates may bring improved persistence modes and better noise filtering on either platform.
• Entry of other competitors: Smaller vendors (e.g., Hantek, Owon) are adding 4‑channel models, potentially driving down prices or adding features like built-in AWG at comparable price points.
• Hardware revisions: Both companies have released “-E” or “-Z Plus” variants—monitor for changes in ADC resolution or front-end protection that could alter long‑term reliability.
• Open-source analysis tools: Compatibility with Sigrok, PulseView, or custom Python libraries remains a factor for engineers who need automated test sequences.