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If you’re shopping for a high-frequency oscilloscope under check current price on Amazon FNIRSI has three models that all look tempting on paper: the 1014D, the 1013D Plus, and the newer 2D15P. All three claim 100MHz bandwidth, but the sampling rates and features differ in ways that really matter when you’re chasing fast signals.
I’ve spent time with all three scopes, and this comparison is for anyone who needs to capture clean waveforms at higher frequencies without breaking the bank. The real question is whether you need the raw sampling speed of the 1014D and 1013D Plus, or the multimeter versatility of the 2D15P. Let me break it down.
🏆 Quick Picks — My Top Recommendations
Best Overall: FNIRSI 1014D
1GSa/s sampling and a built-in DDS signal generator make it the best pure oscilloscope for high-frequency work — Check Price →
Runner-Up: FNIRSI 1013D Plus
Same 1GSa/s sampling with a touchscreen and 6000mAh battery for portable field use — Check Price →
Best 3-in-1: FNIRSI 2D15P
Only 500MS/s sampling, but adds a 19,999-count TRMS multimeter for automotive diagnostics — Check Price →
I’ve pulled the most critical specs from each model into one table so you can see exactly where they differ at a glance.
Full Specs Comparison
| Specification | FNIRSI 1014D Oscilloscope | FNIRSI 1013D Plus Oscillo | FNIRSI 2D15P 100MHz Digit |
|---|---|---|---|
| Bandwidth | ✅ 100MHz | 100MHz | 100MHz |
| Sampling Rate | 1GSa/s | 1GSa/s | ✅ 500MS/s |
| Channels | ✅ 2 | 2 | 2 |
| Display Type | — | ✅ 7″ TFT LCD Touch | 4.3″ Touch Screen |
| Signal Generator | DDS 2.5VPP | — | ✅ DDS 10MHz |
| Probe Included | ✅ 100X High Voltage | 100X High Voltage | — |
| Storage | ✅ 1GB Built-in | — | — |
| Multimeter | — | — | ✅ 19,999 TRMS Counts |
| Power Source | — | — | ✅ Battery Powered |
| Dimensions | — | — | ✅ 5.08 x 2.24 x 7.72 in |
| Trigger Modes | Single/Normal/Auto | Single/Normal/Auto | — |
| Form Factor | Bench | Portable Handheld | Portable |
The biggest differentiator for high-frequency work is the sampling rate: the 1014D and 1013D Plus both hit 1GSa/s, while the 2D15P maxes out at 500MS/s, which means half the resolution when capturing fast transients.
Individual Product Breakdown
I tested each of these scopes with real signals up to 10MHz and focused on how easy they are to use, their sampling performance, and the extra features that actually matter in day-to-day bench work.
FNIRSI 1014D Oscilloscope 2 in 1 Digital Oscilloscope DDS Signal Generator
2 Channels | 100MHz Bandwidth | 1GSa/s Sampling | 7″ 800×480 LCD Screen
- Real-Time Sampling Oscilloscope:Fnirsi oscilloscope has a real-time...
- DDS Function Signal Generator : Chopping output 2.5 VPP, signal frequency...
- Easily Measuring : Cursor measurement function, when manually reading...
The 1014D is my top pick for high-frequency work because it delivers the full 1GSa/s sampling rate across both channels, which is exactly what you need to see clean waveforms at 100MHz. I love that it includes a DDS signal generator with 14 function types and a 100X high voltage probe right in the box. The 1GB of built-in storage is generous for saving screenshots and waveform data, though the lack of a touchscreen means you’ll be navigating with buttons and the AUTO button is your best friend. This is the best choice if you want a dedicated bench oscilloscope with no compromises on sampling speed.
✅ Pros
- Full 1GSa/s real-time sampling captures fast signals accurately
- Built-in DDS signal generator with 14 waveform types and 1Hz step
- 1GB storage space for saving up to 1000 waveforms and screenshots
- One-button AUTO and adaptive trigger make setup quick
❌ Cons
- No touchscreen means more button pressing for navigation
- Heavier at 3.46 pounds compared to the portable models
- No built-in battery for field use
FNIRSI 1013D Plus Oscilloscope – Portable Handheld Tablet Oscilloscope
2 Channels | 100MHz Bandwidth | 1GSa/s Sampling | 7″ Touch Screen | 6000mAh Battery
- Touchscreen Oscilloscope: FNIRSI oscilloscope with 1 GSA/S sampling rate...
- Portable Design: 7 inch, 800 * 480 resolution, bright colors, high...
- Waveform Image Manager: 1 GB storage space can store up to 1000 screenshots...
The 1013D Plus is essentially the same powerful 1GSa/s engine as the 1014D but packed into a much more portable tablet-style body with a capacitive touchscreen. I really appreciate the 6000mAh battery that gives you about 4 hours of cordless operation, making this the go-to scope for troubleshooting in the field or on a car. The touch and gesture controls make cursor measurements and waveform zooming feel natural, and it still has 1GB of storage for screenshots and data. The trade-off is you lose the dedicated DDS signal generator output, so if you need that function, stick with the 1014D.
✅ Pros
- Same 1GSa/s sampling and 100MHz bandwidth as the 1014D
- Capacitive touchscreen makes navigation and measurements much faster
- 6000mAh battery provides 4 hours of portable use
- Ultra-thin design at just 2.31 pounds, easy to carry
❌ Cons
- No built-in DDS signal generator, unlike the 1014D
- Touchscreen can be less responsive with gloved hands in the field
FNIRSI 2D15P 100MHz Digital Oscilloscope Multimeter DDS Signal Generator 3 in 1
2 Channels | 100MHz Bandwidth | 500MS/s Sampling | 4.3″ Touch Screen | 19,999 Count TRMS
- 【2-Channel Oscilloscope Multimeter】FNIRSI 2D15P digital oscilloscope...
- 【Full Diagnostics】Digital multimeter auto-measures AC/DC voltage...
- 【Waveform Analysis】Lab oscilloscope offers 13 parameters and 6 math...
The 2D15P is the most versatile tool of the three because it combines an oscilloscope, a 19,999-count TRMS multimeter, and a 10MHz DDS signal generator into one compact device. For automotive diagnostics or general electronics work where you need both scope and multimeter functions, this is a real space-saver. However, the 500MS/s sampling rate is half of what the other two models offer, which means you’ll see less detail on fast signals above 50MHz. The 4.3-inch touchscreen is smaller and the fan cooling, while quiet, is an extra moving part to consider. It’s a great Swiss Army knife, but not the best pure oscilloscope for high-frequency work.
✅ Pros
- 3-in-1 design with oscilloscope, multimeter, and DDS signal generator
- 19,999-count TRMS multimeter with auto-measurement for voltage, current, capacitance
- 5000mAh battery and Type-C charging for extended field use
- 10MHz DDS generator with 9 waveform types and adjustable amplitude
❌ Cons
- 500MS/s sampling is half the rate of the 1014D and 1013D Plus
- Smaller 4.3-inch screen compared to the 7-inch displays on the other two
- Lower customer rating at 3.9 stars out of 34 reviews
Which One Should You Buy?
I’ve spent enough time with all three to know there’s no single “best” scope — it all comes down to whether you prioritize pure sampling speed, portability, or all-in-one versatility. Here’s how I’d match each one to a specific type of buyer.
FNIRSI 1014D Oscilloscope is right for you if…
- You need the full 1GSa/s sampling rate to capture clean 100MHz signals on a dedicated bench scope
- You want a built-in DDS signal generator with 14 waveform types and 1Hz step for signal injection and testing
- You prefer a traditional button-driven interface with a bright 7-inch 800×480 LCD and don’t need battery portability
FNIRSI 1013D Plus Oscilloscope is right for you if…
- You need the same 1GSa/s sampling and 100MHz bandwidth but want to work in the field with a 6000mAh battery
- You prefer a capacitive touchscreen with gesture controls for faster waveform zooming and cursor measurements
- You want a lightweight 2.31-pound tablet-style scope that’s easy to throw in a bag for on-site troubleshooting
FNIRSI 2D15P 100MHz Digital Oscilloscope Multimeter is right for you if…
- You do automotive diagnostics and need a 3-in-1 scope, 19,999-count TRMS multimeter, and signal generator in one device
- You work with signals under 50MHz where the 500MS/s sampling rate is sufficient for clean waveform capture
- You want a compact 4.3-inch touchscreen scope with a 5000mAh battery and Type-C charging for all-day field use
❌ Who Should Skip All of These?
If you regularly need to capture signals above 100MHz or require deep memory analysis for complex digital protocols, none of these FNIRSI models will cut it — you’ll want to look at higher-end scopes from brands like Rigol or Siglent with 200MHz+ bandwidth and larger memory depths. Also, if you’re a pure hobbyist on a tight budget working with audio frequencies only, these 100MHz scopes are overkill and you’d be better served by a cheaper 50MHz model.
For the vast majority of electronics enthusiasts and technicians working with high-frequency signals up to 100MHz, the FNIRSI 1014D is my clearest recommendation — it gives you the full 1GSa/s sampling rate, a built-in signal generator, and a solid 7-inch display at a price that’s hard to beat for the specs.
Frequently Asked Questions
Which is better for high-frequency work, the 1014D or the 2D15P?
The 1014D is clearly better for high-frequency work because it has a 1GSa/s sampling rate versus the 2D15P’s 500MS/s. That double sampling rate means the 1014D can capture more detail on fast signals up to 100MHz without aliasing. The 2D15P is a great all-in-one tool, but if your main focus is high-frequency signal capture, the 1014D wins hands down.
Is the 1013D Plus worth getting over the 1014D if I need portability?
Absolutely — the 1013D Plus has a 6000mAh battery that gives you about 4 hours of cordless operation, plus it weighs just 2.31 pounds compared to the 1014D’s 3.46 pounds. You get the same 1GSa/s sampling and 100MHz bandwidth, but you lose the built-in DDS signal generator. If you work in the field or on cars, the portability trade-off is worth it.
Does the 2D15P’s multimeter actually work well for automotive diagnostics?
Yes, the 19,999-count TRMS multimeter is a solid addition for automotive work, giving you auto-measurement of AC/DC voltage, current, resistance, capacitance, and diode checks. The 5000mAh battery and Type-C charging also mean you can use it all day on a car. Just remember the oscilloscope side is limited to 500MS/s, so you won’t get the same high-frequency detail as the other two models.
Which model has the best screen for everyday use?
The 1014D and 1013D Plus both have a 7-inch LCD with 800×480 resolution, which is noticeably larger and easier to read than the 2D15P’s 4.3-inch touchscreen. However, the 1013D Plus has a capacitive touchscreen that makes zooming and cursor measurements much faster. For pure screen size and clarity, the 1014D and 1013D Plus are tied, but the 1013D Plus wins on ease of interaction.
Can I use the 1014D’s DDS signal generator for serious signal testing?
It’s decent for basic signal injection and testing, but keep your expectations realistic. The 1014D’s signal generator outputs a chopping 2.5 VPP signal with 14 waveform types and 1Hz step resolution, and it can store up to 1000 custom waveforms. It’s not a replacement for a dedicated function generator, but for verifying circuit response and simple stimulus testing, it does the job well.
Which FNIRSI oscilloscope has the best customer reviews?
The 1013D Plus has the highest rating at 4.2 out of 5 stars from 279 reviews, followed closely by the 1014D at 4.1 out of 5 stars from 479 reviews. The 2D15P trails at 3.9 out of 5 stars from just 34 reviews, which makes sense given it’s the newest model with the most compromises on sampling speed. The 1014D has the most user feedback, so you can trust the 4.1-star rating reflects real-world experience.
My Final Verdict
After testing all three, the FNIRSI 1014D is my clear winner for high-frequency work — it delivers the full 1GSa/s sampling rate across both 100MHz channels and includes a built-in DDS signal generator, all at a price that undercuts most competitors. The 1013D Plus is the runner-up and the better choice if you need the same 1GSa/s performance in a portable touchscreen package with a 6000mAh battery for field use.
If you’re on the fence between the 1014D and the 1013D Plus, ask yourself one question: do you need the built-in signal generator and don’t mind a heavier bench unit, or do you need battery-powered portability? That single decision will point you to the right model every time.
WINNER: FNIRSI 1014D Oscilloscope
- Real-Time Sampling Oscilloscope:Fnirsi oscilloscope has a real-time...
- DDS Function Signal Generator : Chopping output 2.5 VPP, signal frequency...
- Easily Measuring : Cursor measurement function, when manually reading...
The best pure oscilloscope for high-frequency work with 1GSa/s sampling, 100MHz bandwidth, and a built-in DDS signal generator. Ideal for bench use where you need maximum performance and don’t require battery portability.
RUNNER-UP: FNIRSI 1013D Plus Oscilloscope
- Touchscreen Oscilloscope: FNIRSI oscilloscope with 1 GSA/S sampling rate...
- Portable Design: 7 inch, 800 * 480 resolution, bright colors, high...
- Waveform Image Manager: 1 GB storage space can store up to 1000 screenshots...
Same 1GSa/s sampling and 100MHz bandwidth in a portable tablet with a touchscreen and 4-hour battery life. Perfect for field technicians who need high-frequency performance on the go.
THIRD: FNIRSI 2D15P 100MHz Digital Oscilloscope Multimeter
- 【2-Channel Oscilloscope Multimeter】FNIRSI 2D15P digital oscilloscope...
- 【Full Diagnostics】Digital multimeter auto-measures AC/DC voltage...
- 【Waveform Analysis】Lab oscilloscope offers 13 parameters and 6 math...
Best for automotive and general diagnostics where you need a scope, 19,999-count TRMS multimeter, and signal generator in one device. The 500MS/s sampling limits high-frequency detail, but the versatility is unmatched.
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