COMPARISON · OSCILLOSCOPES
FNIRSI DPOS350P vs 1014D: Which Model Offers More?
Both are FNIRSI benchtop-style scopes with two channels, 1 GSa/s and a built-in signal generator, but the DPOS350P is a considerably more ambitious instrument: 3.5 times the bandwidth, a generator that reaches five times higher, and two extra instruments, a spectrum analyzer and a frequency response analyzer, on the same touchscreen. The 1014D is the simpler, longer-established option with a bundled high-voltage probe.
By the OhmSavvy Research Team ·
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FNIRSI DPOS350P
4.3★★★★☆A four-in-one bench tool: 350MHz scope, generator, spectrum analyzer and frequency response analyzer.
FNIRSI 1014D
4.3★★★★☆A two-channel 100 MHz benchtop with a built-in signal generator at an entry-level price.
Specs side by side
| FNIRSI DPOS350P | FNIRSI 1014D | |
|---|---|---|
| Rating | 4.3★★★★☆ | 4.3★★★★☆ |
| Bandwidth | 350MHz | 100MHz |
| Channels | 2 | 2 |
| Sample rate | 1 GSa/s | 1 GSa/s |
| Best for | Benches that want a scope, generator and spectrum analyzer in one box | Budget benches that need a scope and a signal source |
| Bandwidth | 350MHz | 100MHz |
| Channels | 2 | 2 |
| Sample rate | 1 GSa/s | 1 GSa/s (2-channel rate not stated) |
| Vertical resolution | 8–16 bit high-res mode | 8-bit |
| Waveform refresh rate | 50,000 wfm/s | Not stated |
| Rise time (maker figure) | 1 ns | <3 ns |
| Signal generator | 14 waveforms + custom, up to 50MHz sine / 10MHz square | 14 standard + 1 custom, 2.5 Vpp; sine to 10MHz, others to 2MHz |
| Spectrum analyzer | 200kHz–350MHz FFT, 32K points, 3D waterfall | FFT display mode only |
| Frequency response analyzer | 100Hz–50MHz sweep | None |
| Display | 7-inch, 1024 × 600, touchscreen | 7-inch, 800 × 480 |
| Memory | Not stated in our sourcing | Quoted by FNIRSI as "240Kbit" |
| Max test voltage | Not stated in our sourcing | 40 V (1X probe), 400 V (10X probe) |
| Included probes | Not stated in our sourcing | Two 1X/10X probes plus a P4100 100X HV probe (Amazon kit) |
Specs checked against manufacturer documentation and official Amazon listings. Desk research, not bench testing. How we research.
Key differences
- →Bandwidth: 350 MHz on the DPOS350P against 100 MHz on the 1014D, 3.5 times more.
- →Extra instruments: only the DPOS350P includes a spectrum analyzer and a frequency response analyzer alongside the oscilloscope and generator. The 1014D is scope-plus-generator, with an FFT display mode on the scope.
- →Generator: the DPOS350P's 50 MHz sine / 10 MHz square output is five times the 1014D's 10 MHz sine / 2 MHz other-waveform generator.
- →Speed figures: FNIRSI quotes a 1 ns rise time and 50,000 wfm/s for the DPOS350P, and a rise time under 3 ns for the 1014D with no refresh rate stated.
- →Both share the same 1 GSa/s peak sample rate and two-channel count.
- →Maturity: the 1014D is the longer-established model; the DPOS350P is newer, with no independent long-term reviews yet. Neither has been tested hands-on by OhmSavvy.
Spec by spec
The DPOS350P leads on nearly every scope-side spec and adds two instruments the 1014D doesn't have at all. The charts focus on the numbers that separate them most: bandwidth, generator reach and the rise time FNIRSI quotes for each front end.
Those rise-time figures line up with the bandwidths. The common approximation is rise time ≈ 0.35 ÷ bandwidth, which gives about 1 ns at 350 MHz and 3.5 ns at 100 MHz; FNIRSI's <3 ns claim for the 1014D is slightly better than that rule of thumb, so treat it as the maker's figure rather than a measured one. In practice, a logic edge of around 2 ns will look close to true on the DPOS350P and visibly slowed on the 1014D. For more on how bandwidth limits edges, see what oscilloscope bandwidth is.
What each built-in instrument covers
A four-in-one box is easier to judge when you lay its instruments out on one frequency axis. The diagram below does that on a log scale from 100 Hz to 1 GHz, using FNIRSI's published ranges. The 1014D appears only where it has an equivalent function.
Two things stand out. First, the DPOS350P's generator reaches 50 MHz, which means it can drive a test signal right into the range where its scope still has 7x headroom; the 1014D's 10 MHz sine sits ten times below its own 100 MHz bandwidth, which is fine for audio, sensor and filter work but not for checking anything near the scope's upper end. Second, the frequency response analyzer covers 100 Hz to 50 MHz, exactly the span its generator can produce. That makes sense: a frequency response analyzer is a generator and a scope working together, stepping a sine through a range of frequencies and plotting how much comes out of the circuit at each step.
On the 1014D you can do the same job by hand: set the generator to a frequency, read the input and output amplitudes on channels 1 and 2, work out the ratio, then move to the next frequency. For a simple RC low-pass filter with a 1.6 kHz corner (1 kΩ and 100 nF, since f = 1 ÷ 2πRC), ten manual points across 100 Hz to 100 kHz take a few minutes and show the roll-off clearly. The DPOS350P automates that sweep and draws the curve, which matters once you are tuning a filter and want to see the change after every component swap.
FNIRSI DPOS350P vs 1014D: which model offers more?
On raw capability the DPOS350P wins almost every category. The real question is whether you need that capability, or whether it adds cost and complexity you won't use.
If you need more than a scope and a basic generator: the DPOS350P
RF and EMI troubleshooting benefits directly from a built-in spectrum analyzer: a switching regulator's harmonics, a noisy clock or an unwanted oscillation show up as peaks you can identify by frequency. Testing filters or amplifiers is easier with a frequency response analyzer that sweeps and plots the result automatically. If your bench work touches any of that, the DPOS350P replaces what would otherwise be several separate instruments, and its 1024 × 600 touchscreen gives those extra views more room than the 1014D's 800 × 480 panel.
If you just need a straightforward scope with a generator: the 1014D
For general electronics work, such as checking a microcontroller signal, driving a simple filter or basic debugging, the 1014D's 100 MHz and 10 MHz generator cover the job without the DPOS350P's added complexity, learning curve or unproven track record. Its Amazon kit also includes a P4100 100X probe, the accessory you need before looking at anything above the 400 V FNIRSI lists for a 10X probe.
More instruments mean more to learn
Which should you buy?
| Buyer or job | Better fit | Why |
|---|---|---|
| RF/EMI troubleshooting or filter/amplifier testing | FNIRSI DPOS350P | Built-in spectrum and frequency response analyzers |
| Signals approaching or above 30 MHz | FNIRSI DPOS350P | 350 MHz keeps 3–5x headroom where the 1014D runs out |
| General electronics debugging, nothing exotic | FNIRSI 1014D | Covers the job without extra complexity |
| Want a high-voltage probe in the box | FNIRSI 1014D | Amazon kit includes a P4100 100X probe |
| Want the longer-established model | FNIRSI 1014D | The DPOS350P is new, with no long-term reviews yet |
| Need a test signal above 10 MHz | FNIRSI DPOS350P | 50 MHz sine vs 10 MHz |
| Learning scope basics first | FNIRSI 1014D | Fewer modes to learn before the scope makes sense |
Want to see the 1014D against a Hantek alternative instead? See Hantek DSO2C10 vs FNIRSI 1014D or Hantek DSO2D15 vs FNIRSI 1014D, and for a name-brand 12-bit option, Rigol DHO804 vs FNIRSI 1014D. The beginner oscilloscope roundup ranks both, and the oscilloscope buying guide explains every spec from scratch.
The DPOS350P is a newer, unproven entrant
Mains and high voltage
Choose the FNIRSI DPOS350P if…
- ✓You need more bandwidth: 350 MHz against the 1014D's 100 MHz
- ✓You want a spectrum analyzer and frequency response analyzer built in
- ✓You want a stronger generator (up to 50 MHz sine vs 10 MHz)
- ✓You're comfortable with a new, more complex device without a long independent track record
Choose the FNIRSI 1014D if…
- ✓100 MHz bandwidth comfortably covers your signals
- ✓You want a simpler device with a shorter learning curve
- ✓You want the bundled probe kit (two 1X/10X probes plus a 100X HV probe)
- ✓You'd rather buy the lower-complexity, lower-cost option
The bottom line
The FNIRSI DPOS350P outclasses the 1014D on nearly every spec: 3.5 times the bandwidth, a generator that reaches five times higher, and a spectrum analyzer and frequency response analyzer the 1014D doesn't have. But it's also newer, more complex and less proven. Choose the DPOS350P if you'll actually use that extra capability; choose the simpler, longer-established 1014D if a straightforward 100 MHz scope with a basic generator covers your work.
Frequently asked questions
Is the FNIRSI DPOS350P strictly better than the 1014D?+
On documented specs, yes: 350 MHz against 100 MHz, a 50 MHz generator against 10 MHz, and a spectrum analyzer and frequency response analyzer the 1014D doesn't have. The trade-offs are more complexity, a shorter track record, and no stated memory depth or input limits in the sourcing we verified.
Does the FNIRSI 1014D have a spectrum analyzer?+
Not as a separate instrument. FNIRSI lists an FFT mode on the 1014D, which shows the frequency content of a captured waveform, alongside X-Y and roll modes. A dedicated spectrum analyzer with a 200 kHz to 350 MHz range, 32K-point FFT and a 3D waterfall display is only on the DPOS350P.
Which comes with a better accessory kit?+
The 1014D's Amazon kit is the better documented: two 1X/10X probes plus a P4100 100X high-voltage probe. The DPOS350P's included accessories weren't stated in the sourcing we verified, so check the current listing's package contents before buying if probes matter to you.
Is the DPOS350P a good choice for a first oscilloscope?+
It can be, but its four-instrument feature set has a steeper learning curve than the simpler 1014D. If you're new to oscilloscopes and don't yet need a spectrum analyzer or frequency response analyzer, the 1014D lets you learn triggering, timebase and probing with fewer menus in the way.
What is a frequency response analyzer used for?+
It measures how a circuit's output changes with frequency. The analyzer feeds a sine into the circuit, steps it across a range, 100 Hz to 50 MHz on the DPOS350P, and plots output against input at each step. That shows a filter's corner frequency or an amplifier's usable bandwidth without taking readings by hand.
Can the FNIRSI 1014D measure 120 V mains?+
Not safely as a beginner. FNIRSI lists 400 V maximum with a 10X probe, and the kit includes a 100X probe, but the scope's ground clip still connects to whatever it touches. Clipping it to a mains-referenced point can cause a short. Use a differential probe or an isolated setup, and leave building wiring to an electrician.
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