The UNI-T UPO2204HD is a 200 MHz 4-channel 12-bit high-resolution oscilloscope built around the R12™ native 12-bit ADC.

It samples at 2.5 GSa/s with 100 Mpts memory depth standard, and Ultra Phosphor 3.0 acquisition pushes the waveform capture rate to 1,000,000 wfms/s in sequence mode, sixteen times the vertical detail of an 8-bit scope, held at full bandwidth without ERES averaging or sample-rate trade-offs. The 10.1-inch capacitive multi-touch display, on-instrument 4 Mpts FFT, 9 standard protocol decoders, and built-in WebServer round out a six-instrument bench in a single chassis.

The four-channel UPO2204HD is the flagship of the UPO2000HD family — 200 MHz bandwidth, four simultaneous analog channels, 70 µVrms background noise, and 12-bit resolution at the full bandwidth without ERES or sample-rate compromise. For multi-rail switching-converter validation where high-side gate drive, low-side gate drive, switching node, and output ripple all need to be observed in one acquisition, this is the configuration.

• R12™ 12-bit native ADC — 4,096 vertical levels held at the full 200 MHz bandwidth. No ERES averaging, no sample-rate trade-off.
• 200 MHz bandwidth, 4 analog channels — 2.5 GSa/s real-time sample rate, 100 Mpts standard memory depth. Full-bandwidth 12-bit resolution with 70 µVrms noise floor for power-electronics work.
• Ultra Phosphor 3.0 — 1,000,000 wfms/s — Sequence-mode capture rate with 256-level grayscale persistence; surfaces intermittent and rare events.
• 6 instruments in one — Oscilloscope, spectrum analyzer, digital voltmeter, hardware frequency meter, protocol analyzer, and optional power analysis on a single chassis.
• 9 protocol decoders standard — RS-232/UART, I²C, SPI, CAN, CAN-FD, LIN, FlexRay, SENT, and Audio. No license fees, no time-boxed unlocks.
• 10.1-inch capacitive touchscreen — 1280×800 multi-touch with pinch, drag, zoom, and rectangle-draw gestures. Mouse and keyboard supported in parallel.
• 4 Mpts enhanced FFT, 56 automated measurements, hardware mask test, zone trigger, ERES up to 4-bit standard.

Detailed Features

R12™ — Native 12-Bit ADC at Full Bandwidth

R12™ is UNI-T's native 12-bit ADC architecture, holding 4,096 quantization levels at the full 200 MHz bandwidth and 2.5 GSa/s sample rate without ERES averaging or sample-rate trade-off. Background noise is 70 µVrms at full bandwidth — low enough that the 12-bit resolution actually shows up on the screen instead of being buried in the noise floor. For power-electronics validation where µV-scale ripple rides on a 400V bias rail, that headroom is the measurement.

Ultra Phosphor 3.0 — 1,000,000 wfms/s Acquisition

Ultra Phosphor 3.0 is UNI-T's third-generation acquisition engine. Eight-channel parallel graphics processing at up to 20 Gbps drives a continuous capture rate of 250,000 wfms/s, with sequence mode pushing the rate to 1,000,000 wfms/s for trigger-conditioned events. 256-level grayscale persistence makes intermittent runts, glitches, and jitter visible as density gradients on screen rather than as occasional flashes that the eye misses. The same engine drives the digital trigger system — high sensitivity, low jitter, and zone trigger for isolating non-repeating signals.

6 Instruments in One

The UPO2204HD integrates six instrument functions into a single chassis: high-resolution oscilloscope, FFT spectrum analyzer with 4 Mpts and waterfall display, 4-digit digital voltmeter with DC/AC RMS modes, 7-digit hardware frequency meter, 9-protocol decoder and trigger engine, and the optional 12-parameter power analysis suite. With four analog channels feeding all of them, multi-rail converter validation and multi-bus protocol correlation happen on the same instrument without the cabling and context-switching of separate boxes.

Deep Memory — 100 Mpts Standard

100 Mpts of memory comes standard, not as an upgrade. At 2.5 GSa/s that captures 40 ms of full-rate signal in a single acquisition — long enough to record a complete soft-start sequence, a fault-recovery transient, or a multi-frame burst without re-arming. Combined with hardware-accelerated mask testing, the 4-bit ERES enhanced-resolution mode, and uninterrupted recording of up to 125,000 frames, the deep memory turns long-running events from a sampling problem into a navigation problem.

All Protocols Included Standard

Nine serial-bus protocol decoders are included with every UPO2204HD: RS-232/UART, I²C, SPI, CAN, CAN-FD, LIN, FlexRay, SENT, and Audio. Each protocol supports both triggering and decoding, with event-list and search functions for navigating long captures. Decoded data appears alongside the analog waveform on the same trace — correlate a misbehaving I²C transaction with the supply-rail glitch that caused it, or align CAN-FD frames with the gate-drive event that triggered the fault recovery. No license fees, no time-boxed unlocks — the protocols are standard.

Power Analysis — Optional 12-Parameter Suite

The optional power-analysis package adds 12 measurement and analysis functions to the UPO2204HD: power quality, harmonic analysis, current harmonics, R_DS(on), switching loss, slew rate, safe operating area, modulation analysis, output ripple, startup/shutdown time, transient response, and power efficiency. Connect a voltage probe and a current probe, select the analysis type, and the UPO2204HD renders the results without external post-processing — the metrics that drive switching-converter design decisions, on the bench, alongside the time-domain trace.

Built-In Spectrum Analyzer — FFT to 4 Mpts

Standard enhanced FFT analysis runs at up to 4 Mpts across all channels with a frequency range from 0 to 1.25 GHz, four traces, four detection modes, and a waterfall display for tracking spectrum changes over time. Auto, manual, and threshold marker modes locate harmonics, spurs, and EMI sources without switching to a separate spectrum analyzer. For pre-compliance spot checks during board bring-up and switching-noise investigation during converter design, the on-instrument FFT closes a common bench-workflow gap.

56 Automated Measurements with Statistics

56 parameter measurements run continuously on every channel, with up to 27 measurements visible on screen and 39 single-channel parameters in the snapshot view. Statistics, histograms, and trend charts visualize each parameter's distribution over time. The new amplitude calculation strategy with top/bottom and burst-parameter handling makes the numbers correct on signals where naive measurement engines pick the wrong reference levels. No post-processing, no spreadsheet export — the answer is on the screen.

10.1-Inch Touch UI and Full Connectivity

The 10.1-inch 1280×800 capacitive multi-touch display supports pinch, drag, zoom, rectangle-draw, and edit gestures alongside the traditional knobs and one-touch front-panel keys. Mouse and keyboard are supported in parallel. The peripheral set includes USB Host, USB Device, LAN, EXT Trig, AUX Out (Trig Out / Pass-Fail), and HDMI for projector or external-monitor display. SCPI is standard, the built-in WebServer enables browser-based remote control from a PC or mobile device, and firmware updates are free over the product's lifetime. For automated power-converter qualification benches, the SCPI command set drives waveform capture, mask-test pass/fail, and long-record export from a Python or LabVIEW test harness.

Applications

R&D Engineer (Embedded / Hardware / Analog Design)

• Power-Electronics Validation — GaN/SiC half-bridge characterization, switching-node ringing analysis, and µV-scale ripple-on-bias measurement at 200 MHz bandwidth with 70 µVrms noise floor.
• Serial-Bus Debug — Time-correlated analog and protocol-decode views in the same trace; 9 protocols included standard.
• Signal-Integrity Spot Checks — On-instrument 4 Mpts FFT identifies harmonics, clock spurs, and EMI sources without switching to a separate spectrum analyzer.
• Long-Capture Investigation — 100 Mpts memory plus 125,000-frame waveform recording captures complete soft-start, fault-recovery, and burst-mode events without re-arming.

Power Electronics Engineer

• Multi-Rail Switching-Converter Validation — Four-channel 200 MHz configuration observes high-side gate drive, low-side gate drive, switching node, and output ripple in a single acquisition with 12-bit fidelity at 70 µVrms.
• Optional 12-Parameter Power Analysis — Power quality, switching loss, R_DS(on), SOA, transient response, and ripple analysis on the same instrument as the time-domain trace.
• Hardware-Accelerated Mask Testing — Pass/fail validation against switching-waveform templates completes in seconds; AUX Out drives an alarm or DUT shutdown on out-of-mask events.
• Long-Transient Capture — 100 Mpts captures complete soft-start and fault-recovery sequences in one trigger; 125,000-frame waveform recorder for repetitive burst-mode operation.

Options & Accessories

Included with the Instrument

• UPO2204HD oscilloscope
• 4 × passive probes (1:1 / 10:1 switchable, bandwidth matched to instrument)
• USB cable (USB-A to USB-B)
• Power cord (region-appropriate)
• Quick-start guide
• Factory calibration certificate

Recommended Accessories

• UPO2000HD-PWR — optional 12-parameter power-analysis package activation
• UT-P07A — 500 MHz passive probe for higher-bandwidth applications
• UT-P20, UT-P21, UT-V23 — high-voltage passive probes
• UT-P30, UT-P31, UT-P32, UT-P33 — differential probes for floating measurements
• UT-P40, UT-P41, UT-P42, UT-P43, UT-P44 — current probes for power-stage and switching-loss measurement
• UT-ISOT — isolation transformer for safe line-powered measurements
• UT-M13X — oscilloscope demo board for protocol decoding practice and curriculum modules

Software Options

• UPO2000HD-PWR — Power Analysis Option for UPO2000HD

Need different bandwidth or channel-count? Compare with family-mates: UPO2202HD, UPO2104HD, UPO2074HD.

Specifications

Downloads

UNI-T UPO2000HD Series Datasheet

UNI-T UPO2000HD Series Users Manual

FAQ's

What protocols are included with the UPO2204HD?

RS-232/UART, I²C, SPI, CAN, CAN-FD, LIN, FlexRay, SENT, and Audio decoding are included standard at no additional cost. All nine supported protocols are available out of the box — no optional licenses required, no time-boxed unlocks.

What is the advantage of native 12-bit resolution?

A 12-bit ADC provides 4,096 vertical levels compared to 256 for an 8-bit scope — sixteen times greater detail. This reveals small signals riding on large ones, reduces quantization noise, and improves measurement accuracy on low-amplitude signals like power-supply ripple, sensor outputs, and precision analog circuits. R12™ holds the 12-bit resolution at the full bandwidth and sample rate, with no ERES averaging or sample-rate trade-off.

Can I add power-supply analysis?

Yes. The optional power-analysis package adds 12 measurements: power quality, harmonic analysis, current harmonics, R_DS(on), switching loss, slew rate, safe operating area, modulation analysis, output ripple, startup/shutdown time, transient response, and power efficiency. The UPO2000HD-PWR activation unlocks the package on any UPO2000HD-series oscilloscope.

How does the touchscreen handle daily lab use?

The 10.1-inch capacitive multi-touch display supports pinch, drag, zoom, rectangle-draw, and edit gestures alongside the traditional knobs and one-touch front-panel keys. Mouse and keyboard are supported in parallel. For lab settings where students or engineers cycle through the instrument frequently, the gesture set is familiar from consumer devices; for production-style workflows where physical controls are preferred, the front panel still does what front panels do.

How does the UPO2204HD compare to 8-bit oscilloscopes at similar bandwidth?

The 12-bit ADC delivers 16× the vertical resolution of an 8-bit scope at the same bandwidth, with no ERES averaging or sample-rate trade-off. Low-amplitude signals — switching ripple, sensor outputs, precision analog circuits — that 8-bit scopes flatten into quantization noise show up clearly on the 12-bit display. For analog precision work and switching-converter validation, the resolution advantage is structural, not a marketing comparison.

Is the firmware field-upgradable?

Yes. Firmware updates are free over the product's lifetime and install via USB drive or LAN transfer. Optional license unlocks (such as the power-analysis package) have no expiration.

Can the instrument be controlled from a PC or from a browser?

Both. SCPI is supported standard via USB Device or LAN for automated test scripts and PC-side instrument-management software. The built-in WebServer enables direct browser-based control from a PC or mobile device on the same network — no PC-side software install required.

Part of the UPO2000HD oscilloscope series. All models share the R12™ native 12-bit ADC, 2.5 GSa/s sample rate, 100 Mpts memory, Ultra Phosphor 3.0 acquisition, and 9 standard protocol decoders. Bandwidth options span 70 / 100 / 200 MHz; channel options are 2-channel and 4-channel. See the series page to compare configurations.

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