Agilent/Keysight MSOS404A

The Keysight MSOS404A is a 4-channel mixed-signal oscilloscope built for signal integrity analysis and complex transient capture. With 4 GHz analog bandwidth, 16 digital logic channels, and sampling rates to 20 GSa/s across two channels, the instrument delivers the vertical resolution and acquisition depth required for modern embedded and RF debug work.

Technical Specifications

• 4 analog channels with 4 GHz bandwidth (upgradable to 6 GHz and 8 GHz in 2-channel mode)


• Maximum sampling rate: 20 GSa/s (2 channels) / 10 GSa/s (4 channels)


• Memory: 100 Mpts per channel standard, expandable to 800 Mpts


• 10-bit ADC with upgrade path to 16-bit high-resolution mode


• System ENOB: 8.1 bits typical at full bandwidth


• Intrinsic jitter: 100 fs typical Digital Channels


• 16 digital logic channels with flying lead set probe Display & Interface


• 15-inch XGA capacitive touch screen with multi-touch gesture support (zoom, pan) Computing Platform


• Windows 10 operating system


• Intel i5 quad-core processor at 3 GHz


• 8 GB RAM


• 256 GB removeable SSD for fast boot and reliable operation


• Open Windows environment supports third-party application installation


• LXI Class C compliant

Key Features

• Four times the vertical resolution of 8-bit oscilloscopes at 10-bit native resolution


• 16-bit resolution mode minimizes quantization noise for low-level signal observation


• Memory expandability decouples sample rate from capture duration


• 8 GHz BNC calibration cable included for system verification

Typical Applications

• Mixed-signal debug of digital and analog subsystems


• Low-jitter timing and clock analysis


• High-resolution acquisition of weak or noise-embedded signals


• Multi-protocol transient capture with extended trace lengths

Compatibility & Integration Includes four 500 MHz N2873A passive probes, 16-channel logic probe with MSO cable, calibration fixture, Keysight I/O libraries suite, keyboard, mouse, and probe accessory pouch.