Agilent/Keysight MXR258A

The Keysight MXR258A Infiniium MXR-Series Oscilloscope is a real-time instrument combining oscilloscope, spectrum analyzer, signal generator, and protocol decoder capabilities in a single 8-in-1 platform. It delivers 2.5 GHz bandwidth across all 8 analog channels at 16 GSa/s sample rate, with 10-bit ADC resolution expandable to 16 bits in high-resolution mode. The instrument captures up to 1.6 Gpts memory depth and achieves noise as low as 43 µV with 9.0 ENOB, enabling accurate complex signal analysis across digital, RF, and power integrity applications.

Hardware acceleration ASICs from the Infiniium UXR-Series enable rapid eye plot generation and flexible three-stage triggering. Over 50 automated measurements with statistical analysis support detailed waveform characterization. Segmented memory captures up to 5,205 post-trigger events (or >100,000 events with no delay between captures) for comprehensive transient analysis.

History mode preserves up to 1,024 previous trigger events for retrospective review.

Technical Specifications

• Bandwidth: 2.5 GHz (all 8 analog channels)


• Analog Channels: 8


• Sample Rate: 16 GSa/s maximum


• ADC Resolution: 10-bit standard; up to 16 bits in high-resolution mode


• Memory Depth: 200 Mpts per channel standard; up to 1.6 Gpts maximum


• ENOB: Up to 9.0


• Noise Performance: 43 µV minimum


• Triggering: Three-stage flexible triggering


• Measurements: Over 50 standard measurements with automation and statistics

Key Features

• 8-in-1 instrument integration: DVM, 10-digit counter, optional 16 digital channels (MSO license), optional 50 MHz waveform generator, real-time spectrum analyzer (RTSA), and digitally down-converted (DDC) analysis


• RF Analysis: Phase-coherent operation across 8 channels; simultaneous DDC on all channels with up to 2 GHz analysis bandwidth; RTSA spans from 40 MHz to 320 MHz; Frequency Extension option to 6 GHz


• Protocol Support: ARINC-429, BroadR-Reach/100BaseT1, CAN, CAN-FD, eSPI, eUSB2, Ethernet 10BT/100BT, I2C, I2S, LIN, Manchester, MIL-STD 1553, MIPI-I3C, Quad-SPI, RS-232/UART, SENT, Spacewire, SPI, SPMI, SVID, USB 2.0, USB-PD


• Power Integrity Analysis: PSRR, control loop response, and switching current characterization


• Jitter and Noise Analysis: Statistical methods for high-speed digital interfaces


• Fully upgradeable platform for future bandwidth and channel enhancements

Typical Applications

• High-speed digital and mixed-signal circuit validation


• RF signal characterization and analysis


• Power supply and power integrity validation


• Protocol triggering and decode across industrial and automotive standards


• Transient and statistical jitter measurement

Compatibility & Integration The MXR258A supports modular licensing for MSO digital channels and optional waveform generator functionality. ASIC acceleration ensures compatibility with Infiniium UXR-Series performance benchmarks.