Agilent / Keysight DSO9404A Oscilloscope: 4 GHz, 4 Analog Channels

The Agilent/Keysight DSO9404A is a 4 GHz, 4-channel oscilloscope engineered for high-speed signal analysis, troubleshooting, and complex waveform capture. It combines oscilloscope, logic analyzer, and protocol analyzer functionality in a single instrument, delivering the sample rates, memory depth, and triggering sophistication required for demanding electronics design, research, and manufacturing environments.

Technical Specifications

• Analog bandwidth: 4.0 GHz at 50 Ω


• Rise time (10%-90%): 85 ps at 50 Ω


• Rise time (20%-80%): 59 ps at 50 Ω


• Sample rate: 10 GSa/s (4-channel mode) / 20 GSa/s (2-channel mode)


• Memory depth: 20 Mpts standard (4-channel) / 40 Mpts standard (2-channel), upgradeable to 1 Gpts Vertical System


• Input channels: 4 analog


• Input impedance: 50 Ω ±2.5% or 1 MΩ ±1% (11 pF typical)


• Input sensitivity: 1 mV/div to 5 V/div (1 MΩ) / 1 mV/div to 1 V/div (50 Ω)


• Vertical resolution: 8 bits (≥12 bits with averaging)


• Input coupling: AC (3.5 Hz) or DC (1 MΩ); DC only (50 Ω)


• Maximum input voltage: 150 Vrms or dc (1 MΩ, CAT I) / 5 Vrms (50 Ω)


• Minimum input voltage swing: 500 mV peak-to-peak


• Channel-to-channel isolation: 50 dB (DC–50 MHz) / 40 dB (>50 MHz–1 GHz) / 25 dB (>1 GHz–4 GHz)


• Hardware bandwidth limit: 20 MHz (1 MΩ input) Display & System


• 15-inch XGA LCD with touch screen


• Processor: Intel Core 2 Duo M890 3.0 GHz or Intel Celeron M530 1.733 GHz


• System memory: 4 GB or 2 GB


• Storage: ≥250 GB internal hard drive


• Operating system: Windows 7 Embedded Standard or Windows XP Pro


• Dimensions: 9 inches (23 cm) depth


• Weight: 26 pounds (11.8 kg)

Key Features

• Deep capture memory enables extended waveform observation without data loss


• Dual-impedance inputs support both high-impedance and 50 Ω terminated measurements


• Fast acquisition rates in reduced-channel modes for transient signal capture


• 8-bit vertical resolution with hardware averaging option


• Multi-protocol analysis in single instrument reduces bench footprint

Typical Applications

• High-speed digital circuit characterization and validation


• RF and microwave signal measurement and debugging


• Protocol analysis and embedded system diagnostics


• Signal integrity analysis in PCB and packaging design


• Manufacturing test and failure analysis

Compatibility & Integration The DSO9404A operates on Windows 7 Embedded Standard or Windows XP Pro, enabling integration with standard IT infrastructure and third-party software tools commonly deployed in engineering labs and production environments.