The UNI-T UPO2104HD is a 100 MHz, four-channel, 12-bit high-resolution digital storage oscilloscope built around UNI-T's native **R12™** ADC architecture, engineered for embedded systems development, power electronics, analog design, and mixed-signal debugging.

With a 2.5 GSa/s real-time sample rate, 100 Mpts of standard acquisition memory, Ultra Phosphor 3.0 waveform mapping at up to 1,000,000 wfms/s in Sequence mode, a 10.1-inch capacitive multi-touch display, built-in WebServer remote control, and enhanced FFT analysis to 4 Mpts, the UPO2104HD combines six essential bench instruments into a single platform: oscilloscope, spectrum analyzer, digital voltmeter, hardware frequency counter, protocol analyzer, and optional power analyzer.

For embedded development, switching power-supply design, multi-rail power validation, and general-purpose R&D where measurement resolution matters more than raw bandwidth, the UPO2104HD delivers **4,096 vertical levels at the full 100 MHz bandwidth** without enhanced-resolution averaging or sample-rate penalties. Four analog channels allow simultaneous observation of switching nodes, gate-drive signals, output rails, and control circuitry, while nine standard protocol decoders, 56 automated measurements, hardware mask testing, zone triggering, and optional 12-parameter power analysis provide a complete workflow for hardware bring-up, protocol debugging, and power-converter validation in a single instrument.

• 100 MHz Bandwidth, 4 Analog Channels — Four-channel acquisition with 100 MHz bandwidth, 2.5 GSa/s real-time sample rate, and 100 Mpts standard memory depth. Native 12-bit acquisition preserves 4,096 vertical levels across the full bandwidth with no enhanced-resolution averaging or sample-rate compromise.

• R12™ Native 12-Bit ADC — UNI-T's R12™ architecture delivers true 12-bit resolution at full bandwidth and sample rate, providing sixteen times the vertical resolution of conventional 8-bit oscilloscopes for low-level signal, ripple, and precision analog measurements.

• Ultra Phosphor 3.0 — Up to 1,000,000 wfms/s — High-speed acquisition with continuous waveform update rates up to 250,000 wfms/s and Sequence mode reaching 1,000,000 wfms/s. 256-level intensity grading exposes rare glitches, timing violations, and intermittent events conventional oscilloscopes often miss.

• 100 Mpts Standard Memory — Deep acquisition memory captures long-duration events while maintaining full sample rate, supporting extended transient analysis, startup sequences, burst-mode operation, and protocol debugging without sacrificing timing resolution.

• Six Instruments in One — Oscilloscope, enhanced FFT spectrum analyzer, digital voltmeter, hardware frequency counter, protocol analyzer, and optional 12-parameter power-analysis suite consolidate multiple laboratory instruments into a single platform.

• Nine Protocol Decoders Standard — RS-232/UART, I²C, SPI, CAN, CAN-FD, LIN, FlexRay, SENT, and Audio decoding with integrated triggering, event search, and protocol-aware analysis included standard without license activation.

• Enhanced FFT & Advanced Measurements — Standard 4 Mpts FFT, waterfall display, 56 automated measurements with statistics, hardware mask testing, zone triggering, and up to 4-bit ERES enhanced-resolution processing.

• 10.1-Inch Capacitive Touchscreen — 1280 × 800 multi-touch display with pinch-to-zoom, drag, rectangle selection, gesture navigation, plus simultaneous mouse and keyboard support.

• WebServer, SCPI & Modern Connectivity — USB Host, USB Device, LAN, HDMI, EXT Trigger, AUX Out, built-in WebServer, and standard SCPI remote control support automated testing and browser-based instrument operation.

R12™ Native 12-Bit ADC — Full Resolution at Full Bandwidth

The UPO2104HD is built around UNI-T's R12™ native 12-bit ADC architecture, delivering 4,096 quantization levels across the full 100 MHz bandwidth at the full 2.5 GSa/s sample rate. Unlike oscilloscopes that rely on enhanced-resolution averaging to improve vertical performance, R12™ maintains full bandwidth, sample rate, and acquisition performance without mathematical processing or acquisition compromises.

For power electronics, embedded development, precision analog design, and sensor characterization, the additional vertical resolution reveals ripple, switching artifacts, and low-amplitude analog behavior that conventional 8-bit oscilloscopes often bury in quantization noise.

Ultra Phosphor 3.0 — Up to 1,000,000 Waveforms per Second

Ultra Phosphor 3.0 combines high-speed acquisition with 256-level grayscale intensity mapping to reveal intermittent waveform behavior in real time. Continuous acquisition reaches 250,000 wfms/s, while Sequence mode increases capture performance to 1,000,000 wfms/s for trigger-qualified events.

The acquisition engine combines high trigger sensitivity, low trigger jitter, and hardware zone triggering to isolate non-repetitive events. Density-graded waveform persistence makes runts, glitches, timing violations, and intermittent protocol errors visible long before they become reproducible failures.

Six Instruments in One Platform

The UPO2104HD integrates six laboratory instruments into one bench platform: high-resolution oscilloscope, enhanced FFT spectrum analyzer, digital voltmeter, hardware frequency counter, protocol analyzer, and optional power-analysis suite.

With four analog channels available to every measurement engine, users can perform multi-rail power validation, protocol correlation, spectrum analysis, and precision waveform measurements simultaneously without switching instruments or reconnecting probes.

Deep Memory — 100 Mpts Standard

The UPO2104HD includes 100 Mpts of acquisition memory as standard equipment. At the full 2.5 GSa/s sample rate, this provides approximately 40 ms of continuous full-resolution acquisition, allowing complete startup sequences, fault recovery events, communication bursts, and long transient behavior to be captured in a single acquisition.

Combined with uninterrupted recording of up to 125,000 waveform frames, hardware mask testing, and enhanced-resolution processing, the deep memory architecture allows engineers to analyze extended events without sacrificing timing resolution.

Nine Protocol Decoders Included Standard

Nine serial-bus protocol decoders are included with every UPO2104HD: RS-232/UART, I²C, SPI, CAN, CAN-FD, LIN, FlexRay, SENT, and Audio.

Each protocol supports hardware triggering, decoding, searchable event lists, and synchronized analog correlation. Engineers can align decoded protocol traffic directly with analog waveforms, simplifying root-cause analysis of communication failures caused by power-supply disturbances, signal-integrity issues, or timing violations. All protocol options are included standard with no additional license purchases.

Optional 12-Parameter Power Analysis

The optional power-analysis package extends the UPO2104HD with twelve specialized power-electronics measurements, including power quality, harmonic analysis, current harmonics, RDS(on), switching loss, slew rate, safe operating area, modulation analysis, output ripple, startup and shutdown timing, transient response, and efficiency.

The integrated analysis eliminates the need for external post-processing, allowing designers to move directly from waveform acquisition to engineering measurements during switching-converter development and validation.

Enhanced FFT Spectrum Analyzer — Up to 4 Mpts

The built-in enhanced FFT provides frequency-domain analysis using up to 4 Mpts FFT length with waterfall display, multiple trace views, and automatic or manual marker functions.

Engineers can quickly identify switching harmonics, clock spurs, EMI sources, and spectral artifacts directly on the oscilloscope without transferring waveform data to external software, streamlining pre-compliance investigation and mixed-domain debugging.

Automated Measurements, Statistics & Mask Testing

Fifty-six automated measurements operate continuously across all channels with statistical analysis, histograms, trend charts, and snapshot displays. Enhanced amplitude algorithms improve measurement accuracy on burst-mode and complex waveforms where conventional measurement engines often produce misleading results.

Hardware-accelerated mask testing provides rapid pass/fail validation for production testing, design verification, and long-duration stability testing.

10.1-Inch Touch Interface with WebServer Connectivity

The UPO2104HD features a 10.1-inch 1280 × 800 capacitive multi-touch display supporting pinch, zoom, drag, rectangle selection, and gesture-based waveform navigation alongside traditional front-panel controls. Mouse and keyboard operation are supported simultaneously.

Connectivity includes USB Host, USB Device, LAN, HDMI, EXT Trigger, AUX Out, and standard SCPI remote control. The integrated WebServer enables browser-based operation from PCs or mobile devices without additional software installation, making the UPO2104HD equally suited for laboratory benches and automated test environments.

Included with the Instrument

• UPO2104HD 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

Need different bandwidth or channel-count?
Also see: UPO2074HD, UPO2102HD, UPO2072HD.

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.