FNIRSI DPOX180H vs PicoScope 2204A
Head-to-head spec comparison to help you pick the right scope for your bench.
FNIRSI
$110
Pico Technology
$185
Spec-by-Spec Comparison
| Spec | FNIRSI DPOX180H | PicoScope 2204A |
|---|---|---|
| Bandwidth | 180 MHz | 10 MHz |
| Sample Rate | 0.5 GSa/s | 0.1 GSa/s |
| Channels | 2 | 2 |
| Memory Depth | 28 Kpts | 8 Kpts |
| Display Size | 2.8" | N/A |
| Weight | 0.285 kg | 0.15 kg |
| Price | $110 | $185 |
| Rating | 5.0/10 | 6.5/10 |
| Protocol Decoder | Yes | Yes |
| Function Gen | Yes | Yes |
| WiFi | No | No |
| Battery | Yes | No |
| Buy on Amazon · $110 | Buy on Amazon · $185 |
Pros & Cons
FNIRSI DPOX180H
Pros
- Very affordable at ~$110 for what it packs
- 180MHz bandwidth in a genuinely pocket-sized device
- Battery powered and truly portable — shirt-pocket size
- Built-in function generator and multimeter
- Protocol decoding for UART, SPI, and I2C
Cons
- 28Kpt memory depth is critically shallow — limits capture usefulness significantly
- 2.8-inch screen is very small — detailed waveform analysis is uncomfortable
- 500MSa/s sample rate is modest even for a pocket scope
- Accuracy concerns typical of FNIRSI at this price tier
- Build quality is mediocre — the housing feels flimsy
PicoScope 2204A
Pros
- PicoScope 7 software is genuinely excellent — Reddit consistently ranks it above any standalone scope UI
- 16 protocol decoders included free — SPI, I2C, UART, CAN, LIN, FlexRay, I2S, and more
- Built-in AWG function generator in a $185 package
- Ultra-compact and USB-powered — fits in any laptop bag
- Free lifetime software updates — Pico Technology has an outstanding track record of continued improvement
- Up to 12-bit enhanced resolution mode for precision measurements
Cons
- 10MHz bandwidth is severely limiting — fine for audio and slow digital, useless for fast SPI or RF
- 8Kpt buffer memory is tiny — long captures require streaming mode
- Requires a PC to operate — completely useless without a laptop or desktop
- 100MSa/s sample rate means you're already at Nyquist limits with 10MHz signals
- Only 2 channels of analog input
Our Verdicts
FNIRSI DPOX180H
The FNIRSI DPOX180H is a pocket oscilloscope with surprisingly high bandwidth for the money — 180MHz in something smaller than a deck of cards is legitimately impressive. At $110, you also get protocol decoding, a function generator, and a multimeter in the same device. The hard truth is the 28Kpt memory depth and 2.8-inch screen kill its usefulness for anything beyond quick spot checks — you can glance at a signal, but capturing and analyzing a long serial transaction is off the table. The OWON HDS2202S is better in almost every meaningful way if portability is your goal, but it costs $439 versus this scope's $110. At this price, the DPOX180H is best understood as a capable probe-and-check tool, not a primary bench instrument.
PicoScope 2204A
The PicoScope 2204A is the USB scope that Reddit actually respects — unlike the Hantek 6022BE, Pico Technology backs this with genuinely excellent software that gets free updates for life. PicoScope 7 is arguably the best oscilloscope software on any platform, with 16 protocol decoders, advanced math, and a modern interface that makes standalone scope UIs feel dated. The catch is obvious: 10MHz bandwidth and 8Kpt memory mean this is a low-frequency instrument. Audio work, slow serial protocols, power supply debugging, and basic Arduino verification are all fine. Anything above a few MHz — fast SPI, I2C at 400kHz+, or RF work — is off the table. If you already have a laptop and need a scope for bench work under 10MHz, the software quality alone makes this worth the $185. If you need a scope that works without a computer or handles faster signals, look at the DHO802 instead.