Agilent/Keysight MXR404A

The Agilent/Keysight MXR404A is a 4 GHz, 4-channel mixed-signal oscilloscope built for signal integrity analysis, debugging, and validation in advanced electronics design and test environments. It delivers 16 GSa/s sampling across all analog channels with up to 9.0 ENOB and a 43 µV noise floor. The instrument provides flexible memory scaling from 100 Mpts to 1.6 Gpts per channel and functions as eight integrated instruments in one platform, including a Real-Time Spectrum Analyzer, Logic Analyzer, Digitally Down-Converter, and protocol analysis tools.

Technical Specifications

• Bandwidth: 4 GHz on all 4 analog channels; upgradeable options available


• Analog Channels: 4 standard; upgradeable to 8


• Sample Rate: 16 GSa/s across all analog channels


• Memory Depth: 100 Mpts/channel standard; upgradeable to 400 Mpts/channel or 1.6 Gpts flexible memory


• Vertical Resolution: 10 bits; up to 16 bits in high-resolution mode


• Effective Number of Bits (ENOB): Up to 9.0


• Noise Floor: 43 µV minimum


• Timebase Accuracy: 8 parts per billion


• Intrinsic Jitter: 118 fs minimum


• Rise/Fall Time: 430 ps (10-90%); 310 ps (20-80%)


• Waveform Update Rate: Greater than 200,000 waveforms/second Integrated Analysis Instruments


• Logic Analyzer: 16 digital channels; 8 GSa/s sample rate; 400 MHz toggle rate; per-nibble threshold configuration


• Real-Time Spectrum Analyzer (RTSA): 40 MHz analysis bandwidth standard; upgradeable to 160 MHz or 320 MHz on 4 or 8 center frequencies


• Digitally Down-Convert (DDC): All 8 channels simultaneously; up to 2 GHz analysis bandwidth


• Waveform Generator: 50 MHz optional


• Digital Voltmeter: 4-digit; AC RMS, DC, and DC RMS measurement


• Counters: 10-digit; frequency, period, totalize, and ratio functions


• Protocol Analyzer and Bode Plotter: Optional modules available

Key Features

• Three-stage flexible triggering with over 50 standard measurements


• Trigger types: Edge, glitch, pulse width, pattern/state, runt, setup and hold, window, timeout, and sequential triggering


• InfiniiScan zone triggering with automated finders for measurements, serial bit streams, and runts


• Fully upgradeable architecture for bandwidth and channel expansion

Typical Applications Signal integrity characterization, high-speed digital validation, mixed-signal circuit debugging, frequency-domain analysis, and protocol compliance testing.

Compatibility & Integration Supports simultaneous operation of oscilloscope, spectrum analyzer, and logic functions. DDC extends analysis beyond the oscilloscope's native bandwidth with optional frequency extension.