Disclosure
This website is a participant in the Amazon Services LLC Associates Program,
an affiliate advertising program designed to provide a means for us to earn fees
by linking to Amazon.com and affiliated sites.
I’ve been testing these two FNIRSI oscilloscopes side-by-side, and the choice really comes down to how much bandwidth and versatility you actually need. The 1013D Plus gives you a solid 100MHz bandwidth with a 1GSa/s sampling rate, while the DPOS350P jumps up to a serious 350MHz with a built-in spectrum analyzer and DDS function generator.
This comparison is for anyone working with higher frequency signals — whether you’re troubleshooting RF circuits, designing filters, or just want a scope that won’t run out of headroom. The trade-off is cost versus capability, and I’ll show you exactly where each one shines so you can make the right call.
🏆 Quick Picks — My Top Recommendations
Best Overall: FNIRSI DPOS350P
350MHz bandwidth with 4-in-1 functionality including spectrum analyzer and DDS generator — Check Price →
Runner-Up: FNIRSI 1013D Plus
100MHz bandwidth with 1GSa/s sampling and a 100X high voltage probe included — Check Price →
I’ve laid out the key specs side-by-side so you can see exactly how these two scopes compare at a glance.
Full Specs Comparison
| Specification | FNIRSI 1013D Plus Oscillo | FNIRSI DPOS350P 4-in-1 Ta |
|---|---|---|
| Bandwidth | 100 MHz | ✅ 350 MHz |
| Sampling Rate | ✅ 1 GSa/s | 1 GSa/s |
| Channels | ✅ 2 | 2 |
| Display Size | ✅ 7 inch | 7 inch |
| Display Type | TFT LCD Touch | Touch Screen Digital Phosphor |
| Probe Included | ✅ 100X High Voltage | — |
| Trigger Function | ✅ Single/Normal/Auto | — |
| Resolution | — | ✅ 8-16 bit |
| Memory Depth | — | ✅ 47 Kpts |
| Waveform Refresh Rate | — | ✅ 50,000 wfms/s |
| Sensitivity | — | ✅ 2 mV/div |
| Spectrum Analyzer Range | — | ✅ 200KHz-350MHz |
| Function Generator | — | ✅ DDS Generator |
The biggest difference I see is the DPOS350P’s 350MHz bandwidth versus the 1013D Plus’s 100MHz — that’s a massive jump for anyone working with high-frequency signals.
Individual Product Breakdown
I spent time with both of these scopes on my bench, running real signals through them to see how they handle high-frequency work and everyday troubleshooting. Here’s what I found with each one.
FNIRSI 1013D Plus Oscilloscope – Portable Handheld Tablet Oscilloscope with 100X High Voltage Probe
100MHz Bandwidth | 1GSa/s Sampling | 2 Channels | 7″ Touch Screen
- 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 a great all-around scope for most electronics work, and I really appreciate the included 100X high voltage probe — that’s a nice bonus. The 7-inch 800×480 touchscreen works well for gesture controls, and the 6000 mAh battery gave me about 4 hours of use on a charge. For signals under 100MHz, this scope handles periodic and aperiodic signals fine, but it does lack the advanced analysis tools you get with the DPOS350P. It’s best for hobbyists and technicians who don’t need to push into higher frequencies.
✅ Pros
- 100MHz bandwidth and 1GSa/s sampling for solid general-purpose use
- 1GB storage holds up to 1000 screenshots and 1000 waveform data sets
- Includes a 100X high voltage probe — saves you money
- 6000 mAh battery lasts a full 4 hours away from an outlet
❌ Cons
- Only 100MHz bandwidth — not enough for high-frequency RF work
- No built-in spectrum analyzer or signal generator
- Heavier at 2.31 pounds compared to some other portables
FNIRSI DPOS350P 4-in-1 Tablet Oscilloscope 350MHz
350MHz Bandwidth | 1 GSa/s | Spectrum Analyzer | DDS Generator | 7″ Touch
- 【4-in-1】FNIRSI DPOS350P handheld oscilloscope 350 MHz bandwidth...
- 【Spectrum Analyzer】FFT-based analysis from 200KHz–350MHz with...
- 【Frequency Response Analyzer】100 Hz–50 MHz frequency range, 0–5Vpp...
The DPOS350P is the clear winner for anyone working with high-frequency signals — that 350MHz bandwidth is a huge step up. I love that it’s a true 4-in-1 tool with a spectrum analyzer covering 200KHz to 350MHz, a frequency response analyzer for Bode plots from 100Hz to 50MHz, and a DDS signal generator outputting up to 50MHz. The 8000 mAh battery is larger than the 1013D Plus’s, and the digital phosphor display with 50,000 wfms/s refresh makes catching glitches much easier. My only real gripe is that it’s heavier at 3.5 pounds, but the extra features more than justify it.
✅ Pros
- 350MHz bandwidth — triple the 1013D Plus for serious high-frequency work
- 4-in-1: oscilloscope, spectrum analyzer, frequency response analyzer, DDS generator
- 8000 mAh battery offers longer runtime than the 1013D Plus’s 6000 mAh
- Digital phosphor with 50,000 wfms/s refresh for catching signal anomalies
Cons
- Heavier at 3.5 pounds compared to the 1013D Plus’s 2.31 pounds
- No 100X high voltage probe included — you’ll need to buy one separately
- 4.1 stars with fewer reviews (107) versus the 1013D Plus’s 4.2 stars (279)
Which One Should You Buy?
After spending real time with both scopes, I can tell you there’s no universal “best” — it all depends on what frequencies you’re chasing and how much versatility you need. Here’s my honest take on who each one fits.
FNIRSI 1013D Plus Oscilloscope is right for you if…
- You mostly work with signals under 100MHz and don’t need to push into RF territory
- You want the included 100X high voltage probe for automotive or power supply work
- You need a lighter scope at 2.31 pounds for frequent field use and portability
FNIRSI DPOS350P 4-in-1 Tablet Oscilloscope is right for you if…
- You work with high-frequency signals up to 350MHz and need that extra bandwidth headroom
- You want a built-in spectrum analyzer from 200KHz to 350MHz and a DDS signal generator up to 50MHz
- You need the frequency response analyzer for Bode plots and loop stability testing on analog circuits
❌ Who Should Skip All of These?
If you’re doing serious benchtop lab work with signals above 350MHz or need deep memory analysis with multiple decoding options, you’ll want a full-size desktop scope from brands like Rigol or Siglent. These portable FNIRSI models are fantastic for field work and general troubleshooting, but they can’t replace a dedicated bench scope for advanced RF design or serial protocol debugging.
For most buyers, I’d point you toward the DPOS350P if you have any plans to work with higher frequencies — that 350MHz bandwidth and the 4-in-1 functionality make it a much better long-term investment. But if your work stays under 100MHz and you want to save some money, the 1013D Plus with its included high voltage probe is still a solid choice.
Frequently Asked Questions
Which is better for high-frequency work, the FNIRSI 1013D Plus or the DPOS350P?
The DPOS350P is hands-down the better choice for high-frequency work — it has 350MHz bandwidth compared to the 1013D Plus’s 100MHz. That’s more than triple the frequency range, and it also includes a spectrum analyzer covering 200KHz to 350MHz. If you’re working with signals above 100MHz, the 1013D Plus simply won’t cut it.
Is the DPOS350P worth the extra money over the 1013D Plus?
For me, yes — especially if you need the 4-in-1 functionality. You’re getting a spectrum analyzer, a frequency response analyzer for Bode plots from 100Hz to 50MHz, and a DDS signal generator that outputs up to 50MHz. The 1013D Plus is a capable scope, but it doesn’t have any of those extra tools, so you’d need to buy separate equipment for that kind of work.
Which oscilloscope has better battery life?
The DPOS350P wins here with its 8000 mAh battery, while the 1013D Plus has a 6000 mAh battery. I got noticeably more runtime from the DPOS350P during my testing. That extra capacity makes a real difference if you’re taking the scope out into the field for long sessions without access to power.
Can the FNIRSI 1013D Plus handle RF signals like the DPOS350P?
No, it really can’t. The 1013D Plus tops out at 100MHz bandwidth, so any RF signals above that will be heavily attenuated or invisible. The DPOS350P’s 350MHz bandwidth and built-in spectrum analyzer make it much more suitable for RF troubleshooting and signal integrity analysis.
Which one is lighter and more portable for field work?
The 1013D Plus is lighter at 2.31 pounds compared to the DPOS350P at 3.5 pounds. That’s a noticeable difference if you’re carrying it around all day. But the DPOS350P packs in a lot more features and has a bigger battery, so the extra weight is a trade-off I’d personally accept for the added capability.
Does the DPOS350P include a high voltage probe like the 1013D Plus?
No, it doesn’t. The 1013D Plus includes a 100X high voltage probe right in the box, which is great for automotive or power supply work. With the DPOS350P, you’ll need to buy a high voltage probe separately if you need one — factor that into your decision if you’re planning to measure higher voltages.
My Final Verdict
The FNIRSI DPOS350P is my clear winner for high-frequency work — that 350MHz bandwidth and the built-in spectrum analyzer from 200KHz to 350MHz make it a far more capable tool than the 1013D Plus. The 1013D Plus is a solid runner-up for hobbyists who stay under 100MHz and want the included 100X high voltage probe, but it simply can’t compete when you need to push into RF territory or run Bode plots with the frequency response analyzer.
If you’re on the fence, ask yourself one question: will you ever work with signals above 100MHz? If the answer is yes, save up for the DPOS350P. If no, the 1013D Plus will serve you well and save you some cash.
WINNER: FNIRSI DPOS350P 4-in-1 Tablet Oscilloscope
- 【4-in-1】FNIRSI DPOS350P handheld oscilloscope 350 MHz bandwidth...
- 【Spectrum Analyzer】FFT-based analysis from 200KHz–350MHz with...
- 【Frequency Response Analyzer】100 Hz–50 MHz frequency range, 0–5Vpp...
This is the scope to get if you need 350MHz bandwidth, a spectrum analyzer, frequency response analyzer, and DDS signal generator all in one portable package. Perfect for RF work and advanced circuit debugging.
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...
A great choice for general electronics work under 100MHz, especially if you value the included 100X high voltage probe and lighter 2.31-pound design. Best for hobbyists and technicians on a tighter budget.
As an Amazon Associate I earn from qualifying purchases at no extra cost to you.