UNI-T UPO1154HD vs Siglent SDS814X HD
More bandwidth and twice the memory — true 12-bit HD with a 5-year warranty.
The UPO1154HD leads on bandwidth (150 vs 100 MHz) and memory (100 vs 50 Mpts) and adds two years of warranty. The SDS814X HD samples faster, decodes CAN-FD and FlexRay as standard, offers an optional logic pod, and lists a little lower. Both are quiet 12-bit front ends — ours is 60 µVrms at the full 150 MHz.
UNI-T UPO1154HD
- ✓ Bandwidth: 150 MHz
- ✗ Analog channels: 4 analog (DSO — no digital channels)
- ✗ Sample rate: 1.25 GSa/s (1-ch); 312.5 MSa/s (4-ch)
- ✓ Memory depth: 100 Mpts
- ✓ Waveform capture rate: 100,000 wfms/s (500,000 sequence)
- ✓ Warranty: 3+2 years (5 total with registration)
Siglent SDS814X HD
- ✗ Bandwidth: 100 MHz
- ✓ Analog channels: 4 analog (+16 digital via optional SLA1016 pod)
- ✓ Sample rate: 2 GSa/s (1-ch); 1 GSa/s (4-ch)
- ✗ Memory depth: 50 Mpts (100 Mpts max)
- ✓ Waveform capture rate: 120,000 wfms/s (500,000 sequence)
- ✗ Warranty: 3 years
~$587 (distributor listing, June 2026)
150 MHz
Bandwidth
100 Mpts
Memory Depth
1.25 GSa/s
Sample Rate
100,000 wfms/s
Capture Rate
12-bit
Vertical Resolution
More bandwidth, twice the memory
150 MHz against the SDS814X HD's 100, and 100 Mpts of acquisition memory against 50 — more headroom and far longer records at full sample rate.
True 12-bit HD
12-bit native resolution on a 7-inch capacitive touchscreen, the same HD class as the SDS800X HD.
Six instrument functions, portable
Scope, spectrum/FFT, protocol analyzer, 4-digit DVM, 6-digit frequency counter and power analysis, Type-C/PD-capable at 1.56 kg.
5-year warranty, US support
Exclusive 3+2 warranty (five years with free registration) versus Siglent's three, US stock and support, no subscriptions.
Comprehensive Feature Comparison
| Feature | UNI-T UPO1154HD | Siglent SDS814X HD | Advantage |
|---|---|---|---|
| Bandwidth | 150 MHz | 100 MHz | UNI-T ✓ |
| Analog channels | 4 analog (DSO — no digital channels) | 4 analog (+16 digital via optional SLA1016 pod) | Siglent ✓ |
| Sample rate | 1.25 GSa/s (1-ch); 312.5 MSa/s (4-ch) | 2 GSa/s (1-ch); 1 GSa/s (4-ch) | Siglent ✓ |
| Memory depth | 100 Mpts | 50 Mpts (100 Mpts max) | UNI-T ✓ |
| Waveform capture rate | 100,000 wfms/s (500,000 sequence) | 120,000 wfms/s (500,000 sequence) | Equal |
| Display | 7″ capacitive touch (1024×600) | 7″ capacitive touch | Equal |
| Built-in AWG | Not included | Not included | Equal |
| Serial protocol decode | 5 standard (RS-232/422/485/UART, I2C, SPI, CAN, LIN) | 7 standard incl CAN-FD, FlexRay | Siglent ✓ |
| Input noise floor | 60 µVrms at the full 150 MHz bandwidth | Low-noise 12-bit front end (figure not published for this model) | Equal |
| Warranty | 3+2 years (5 total with registration) | 3 years | UNI-T ✓ |
| Price (USD) | See current price → | ~$587 | Siglent ✓ |
* UNI-T specifications from the MSO1000HD Series datasheet and our live product data. Siglent figures from published manufacturer data and authorized US distributor listings, June 2026.
The bottom line
The UPO1154HD and the SDS814X HD are closely matched 12-bit HD scopes. The UPO1154HD brings 50 MHz more bandwidth, twice the memory and five years of cover; the Siglent brings a faster sample rate, a wider standard decode set, an optional logic pod and a slightly lower price. Neither front end is noisy.
Perfect For:
Education & teaching labs
A durable 12-bit touchscreen scope with deep memory and a 5-year warranty for student benches.
Embedded & general debug
Standard RS-232/422/485/UART, I2C, SPI, CAN and LIN decode with 100 Mpts of memory; for CAN-FD/FlexRay-heavy work the Siglent has broader standard decode.
Power & precision low-level work
12-bit native resolution plus power analysis for ripple and small-signal measurements.
Other models in the MSO1000HD Series
UPO1152HD
UPO1152HD — Same platform, 150 MHz / 2 channels at a lower price.
UPO1084HD
UPO1084HD — Step down to 80 MHz / 4 channels for the lowest entry price.
MSO1254HD
MSO1254HD — Step up to a 250 MHz MSO with standard 16-channel logic.
Frequently Asked Questions
Is the UNI-T UPO1154HD a good alternative to the Siglent SDS814X HD?
Yes, on bandwidth and memory: the UPO1154HD gives you 150 MHz against 100 and 100 Mpts against 50, at the same 12-bit resolution, with a 5-year warranty against three. The SDS814X HD samples faster, decodes CAN-FD and FlexRay as standard, takes an optional 16-channel logic pod, and lists a little lower.
How does the MSO1000HD Series compare with the SDS800X HD Series?
The UPO1000HD Series tops the SDS800X HD on bandwidth (to 150 MHz) and lists lower, with the same 12-bit resolution; the SDS800X HD counters with a faster sample rate, broader standard decode and a low-noise front end.
What do I get for the money with the UPO1154HD?
For 12-bit bench work the UPO1154HD gives you 150 MHz, 4 analog channels, 100 Mpts of memory and six instrument functions in a 1.56 kg shell, backed by a 5-year warranty. It is a DSO — if you need digital channels, look at the MSO1000HD instead.
Are UNI-T software options subscriptions?
No. Every UNI-T software option is a permanent one-time unlock — no annual licenses, no renewal fees and no features that expire. Once enabled, a function stays enabled for the life of the instrument.
Ready to compare on the bench?
150 MHz, 100 Mpts and a 5-year warranty, on a true 12-bit platform.
View full specifications and current pricing for the UNI-T UPO1154HD →
Disclaimer: Siglent® is a registered trademark of Siglent Technologies Co., Ltd.. UNI-T® is a registered trademark of Uni-Trend Technology (China) Co., Ltd. The comparison provided is based on publicly available information and is intended for informational purposes only. This comparison is not endorsed by, affiliated with, or sponsored by Siglent Technologies Co., Ltd.. All trademarks, product names, and company names mentioned herein are the property of their respective owners.