Keysight MSOS804A High-Definition Oscilloscope: 8 GHz, 4 Analog Plus 16 Digital Channels

The Keysight MSOS804A is an 8 GHz mixed-signal oscilloscope combining 4 analog channels with 16 digital channels for comprehensive signal characterization in complex embedded and RF applications. This instrument delivers 10-bit vertical resolution standard, expandable to 16 bits via High Resolution mode, with a low-noise front-end and effective system ENOB of 8.1 bits at full bandwidth. The 15-inch XGA capacitive touchscreen and Windows 10 OS enable rapid setup and intuitive waveform navigation, while configurable memory depth up to 800 Mpts per channel on 2-channel operation supports extended acquisition windows. Sample rates reach 20 GSa/s on two channels or 10 GSa/s across all four analog channels, making the MSOS804A suited for protocol analysis, signal integrity validation, and multi-domain debugging.

– Technical Specifications

Analog Channels
• Bandwidth: 8 GHz (2 channels active), 4 GHz (4 channels active)
• Sample Rate: 20 GSa/s (2 channels), 10 GSa/s (4 channels)
• Input Impedance: 50 Ω ± 2.5% or 1 MΩ ± 1% (11 pF typical)
• Vertical Sensitivity: 1 mV/div to 5 V/div (1 MΩ), 1 mV/div to 1 V/div (50 Ω)
• Minimal Scaling: 2 mV/div (hardware implemented)
• Input Coupling: DC, AC (>11 Hz)
• Rise/Fall Time: 53.8 ps (10-90%), 33.8 ps (20-80%)
• DC Gain Accuracy: ± 2% full scale (± 1% typical)

Digital Channels
• Count: 16 channels
• Analog Bandwidth: 400 MHz
• Max Input Voltage: ± 40 VPEAK
• Input Dynamic Range: ± 10 V about threshold
• Minimum Input Swing: 500 mVP-P
• Input Impedance: 100 kΩ ± 2% (~8 pF)
• Channel Skew: 500 ps typical
• Threshold Options: TTL, CMOS (5.0 V, 3.3 V, 2.5 V), ECL, PECL, user-defined (± 8 V in 10 mV steps)
• Threshold Accuracy: ± 100 mV + 3% of setting

Memory & Resolution
• Standard Depth: 100 Mpts/channel
• Upgradeable: 200 Mpts, 400 Mpts, or 800 Mpts (2-channel operation)
• Vertical Resolution: 10-bit ADC; up to 16 bits (High Resolution mode)
• ENOB: 8.1 bits average at full bandwidth; 6.4 bits typical (standard mode)
• Noise Floor: 90 µV @ 1 mV/div, 1 GHz BW; 1.4 mV @ 50 mV/div
• SFDR: -73 dBc
• Eigen Jitter: 100 fs rms (100 ns/div, <1 µs measurement)

Display & Processing
• Screen: 15-inch XGA (1024 × 768 pixels) capacitive touchscreen
• Processor: Intel i5 3 GHz quad-core
• RAM: 8 GB
• OS: Windows 10

– Key Features

• Simultaneous analog and digital acquisition with segmented memory allocation
• 500 MHz bandwidth option via 1 MΩ input impedance
• Solid-state drive for rapid system boot and data reliability
• Six USB ports (2 front, 4 side; 2× USB 3.0), Ethernet, RS-232, XGA/DVI video outputs

– Typical Applications

Embedded system debug, protocol analysis, signal integrity measurement, mixed-signal validation, RF circuit characterization.

– Compatibility & Integration

Precision BNC connectors support standard passive and active probes. Multiple interface options (USB 3.0, Ethernet, RS-232) enable remote control and data export for integration into automated test environments.