Best Oscilloscope With Signal Generator for DIY, Education, and Pro Work
Looking for an oscilloscope with an integrated signal generator? This guide highlights five versatile models that pair broad bandwidth, multiple channels, and built-in waveform generation for troubleshooting, design, and education. Each option is suited to different buyers—from students and hobbyists to engineers and technicians who need reliable test signals without extra equipment. The following selections balance value and capability, with clear notes on who should choose each model and potential limitations to consider.
| Product | Best For |
|---|---|
| Hantek DSO2D15 | Budget-conscious labs needing 2 channels and an on-board waveform generator |
| FNIRSI 2C53T | Students and field technicians seeking a compact 3-in-1 tool |
| FNIRSI 2D15P | Electronics hobbyists needing higher sampling and a touchscreen |
| Hantek DSO2C10 | Part-time technicians needing 2-channel scope with triggers and decoding |
| RIGOL DHO924S | Professional labs requiring higher bandwidth and built-in function generator |
Hantek DSO2D15: 150MHz, 2-Channel with Waveform Output
The Hantek DSO2D15 is a cost-effective digital storage oscilloscope designed for general-purpose testing with an integrated waveform generator. It features 150 MHz bandwidth and 2 channels at up to 1 GSa/s, plus 8 MB memory depth. The instrument supports 14 trigger modes and includes standard serial protocol triggers and decodes, simplifying debugging of communication interfaces. Best for: entry-level labs, classrooms, and engineers who need a capable scope with built-in waveform output to generate test signals without external equipment. Caution: ensure your signal generator needs are within the device’s bandwidth and memory constraints for longer captures.
FNIRSI 2C53T: 50MHz, 2-Channel with DDS Generator
The FNIRSI 2C53T combines a 50 MHz two-channel oscilloscope, a 250 MSa/s sampler, and a DDS signal generator with up to 400 V measurement range. It also includes a 1 Kpts memory depth, automatic measurements, and a rugged multimeter with up to 19999 counts. Best for: students and professionals who need a compact, multi-purpose instrument for automotive electronics, lab work, or field service. Better for: quick diagnostics and signal generation in a single handheld-style device. Caution: the 50 MHz bandwidth may limit high-frequency waveform fidelity for more demanding analog designs.
FNIRSI 2D15P: 100MHz, 2-Channel with DDS Generator
The FNIRSI 2D15P expands to a 100 MHz bandwidth with 500 MS/s sampling and two channels, plus a 4.3-inch touchscreen for quick navigation. It offers 19,999-count TRMS multimeter capabilities, a 10 MHz DDS signal generator, and a range of memory depths (up to 1 M points) for capturing longer waveforms. Best for: electronics hobbyists and technicians who value a touchscreen interface and combined diagnostic tooling. Better for: portable workbenches and bench-top repair where quick, visual analysis matters. Caution: higher-frequency work will benefit from a scope with greater bandwidth and memory depth.
Hantek DSO2C10: 100MHz, 2-Channel with High Voltage Probe
The Hantek DSO2C10 offers a 100 MHz bandwidth and 2 channels with 1 GSa/s sampling, paired with a high voltage probe for safety during high-energy signal testing. It shares many core features with its DSO2D15 sibling, including multiple trigger modes and serial protocol decoding. Best for: technicians working with higher voltage signals who still need accessible waveform generation. Better for: test benches requiring integrated high voltage consideration. Caution: ensure probe compatibility with your test setup to avoid measurement errors.
RIGOL DHO924S: 250MHz Scope with Built-in Signal Generator
The Rigol DHO924S stands out with a higher 250 MHz bandwidth, 12-bit resolution, and integrated 25 MHz AFG signal generator. It delivers 1.25 GSa/s sampling across four analog channels and up to 50 Mpts memory depth, enabling detailed signal capture and analysis. Built-in waveform search and navigation accelerate debugging across long acquisitions. Best for: professional labs needing higher bandwidth and a robust AFG for loop tests and calibration. Better for: long-term project work where fast waveform analysis and precise signal generation are essential. Caution: more advanced features may require a steeper learning curve for new users.
Buying Guide
- Bandwidth and sampling rate: Higher bandwidth and sampling rates capture faster edges and finer details but come at a higher price. Choose in line with your signal frequencies and required fidelity.
- Channel count and memory depth: More channels and larger memory support complex signals and longer acquisitions. If you analyze transients or protocol decoding, prioritize memory depth.
- Built-in signal generator: Verify generator frequency range, waveform types, and modulation options. Ensure the generator meets your test needs without extra equipment.
- Triggers and decoding: Look for multiple trigger modes and decodes for serial protocols (I2C, SPI, UART, etc.) if working with embedded devices or communications.
- Display and usability: Touchscreen interfaces and clear waveform visualization help during troubleshooting. Consider portability if field use is expected.
- Probe support and safety: Confirm included probes or probe compatibility, especially when testing high-voltage or high-current signals.
- Software and updates: Check for firmware updates and software features like waveform math, analysis, and data export compatibility with your workflow.
FAQ
- What is the benefit of an oscilloscope with a built-in signal generator?
It allows you to create test signals directly from the instrument, simplifying bench setups and reducing the need for external generators. - How important is bandwidth for everyday electronics work?
Bandwidth should cover the highest frequency components of the signals you test; for digital and RF work, higher bandwidth improves fidelity. - Should I prioritize more channels or deeper memory?
If you frequently analyze multi-signal interactions, prioritize additional channels. For long captures and complex events, deeper memory is more valuable. - What mistakes should I avoid when buying an oscilloscope with a generator?
Avoid choosing solely on price; ensure the device meets your signal frequency, decoding needs, and practical workflow requirements. - Is a portable option better for field work?
Portable units are convenient for on-site diagnostics, but may trade off some features available in benchtop models. - Do these models support advanced math and analysis?
Most offer basic to mid-level math and analysis; check specific features if you need advanced functions.