Keysight Technologies UXR0254A

The Keysight UXR0254A offers 25 GHz of real-time analog bandwidth across all four channels simultaneously without restrictions. This bandwidth level is ideal for analyzing signals in high-speed digital communications, next-generation memory interfaces, and emerging wireless standards. The instrument's modular design allows field upgrades to higher bandwidths up to 110 GHz through software licenses, providing investment protection as technology requirements advance.

The UXR0254A provides 128 GSa/s per channel sampling rate unrestricted across all four channels, delivering 7.8125 ps real-time sample resolution. This high sampling rate ensures accurate capture of signal details and fast transitions across the full 25 GHz bandwidth. The time-interleaved sampling architecture maintains consistent performance on all channels simultaneously, enabling multi-channel applications like differential signaling and multi-lane serial data analysis without compromise.

The UXR0254A employs a high-fidelity 10-bit ADC that provides 1,024 quantization levels, offering 4 times better vertical resolution than conventional 8-bit oscilloscopes. This advanced ADC achieves superior effective number of bits for bandwidths above 13 GHz and enables vertical sensitivity down to 4 mV/div in hardware. The improved resolution allows engineers to accurately measure small signal variations, perform detailed noise analysis, and characterize signal integrity parameters that would be obscured by quantization noise in lower-resolution instruments.

The UXR0254A ships with 200 Mpts of standard memory per channel and supports upgrades to 1 Gpt or 2 Gpts per channel through license-based activation. This industry-leading deep memory enables extended waveform capture at full sample rates, allowing analysis of long data sequences, rare events, and complex protocol transactions. The upgradable memory architecture lets users scale acquisition capability as testing complexity increases without requiring new equipment.

The UXR0254A features ruggedized male 3.5 mm NMD analog bulkhead connectors with an integrated torque mechanism providing consistent 8 in-lb connections for optimal signal integrity. These versatile connectors accept standard female SMA, 3.5 mm, and 2.92 mm cables and adapters through internal threads, while external threads support ruggedized connections. The AutoProbe II interface provides seamless compatibility with InfiniiMax III and III+ probe families for flexible measurement setups.

The UXR0254A achieves exceptionally low noise through an ultra-quiet analog multi-chip front-end module specifically optimized for DC to 33 GHz bandwidths. The design incorporates low-noise pre-amplifiers, Faraday cage shielding technology, and advanced time-interleaved sampling with signals aligned to 10-bit ADCs. Analog and DSP bandwidth limit filters further reduce unwanted noise, while the broad maximum input voltage range from 32 mV to 8 V full scale maintains low noise across different signal amplitudes.

The UXR0254A excels in demanding applications including high-speed datacom system debugging, 802.11ad and 802.11ay wireless characterization, PCIe debug and compliance testing, USB 3.x and Thunderbolt signal integrity analysis, DDR5 memory validation, 5G RF and baseband development, and coherent optical modulation research. The instrument's combination of 25 GHz bandwidth, low jitter performance below 10 fs RMS, and high ENOB makes it particularly effective for multi-channel PAM4 and NRZ signal analysis.

Yes, the UXR0254A is designed as a fully upgradable platform with sequential bandwidth upgrade paths from 25 GHz through intermediate steps up to 110 GHz, accomplished onsite via software license keys in most cases. Memory can be expanded from 200 Mpts to 1 Gpt or 2 Gpts per channel, and the instrument can grow from 2 to 4 channels in supported configurations. This modular architecture allows the oscilloscope to evolve with changing test requirements while preserving the initial investment.