Agilent/Keysight DSA81204B

The Agilent/Keysight DSA81204B is a 12 GHz digital real-time oscilloscope (upgradeable to 13 GHz) engineered for high-speed signal acquisition, compliance testing, and signal integrity analysis. It delivers 4 analog channels at up to 40 GSa/s with configurable memory architecture, precision triggering, and low-noise performance for demanding validation workflows.

Technical Specifications

• Bandwidth: 12 GHz (upgradeable to 13 GHz)


• Channels: 4 analog


• Sample Rate: Up to 40 GSa/s


• Memory Options:

Standard: 512 kpts

Optional: 2 Mpts at 40 GSa/s

Optional: 64 Mpts at 4 GSa/s

Post-purchase upgrade available

• Vertical Sensitivity: 5 mV/div minimum


• Noise Floor: 387 µV @ 5 mV/div


• Trigger Jitter: <500 fs rms


• Differential Input Resistance: 50 kΩ


• Differential Input Capacitance: 0.21 pF

Key Features

• XGA touch screen display with 256 intensity levels


• noise floor specification minimizes measurement uncertainty on low-amplitude signals


• Sub-500 fs trigger jitter enables precise time-domain characterization


• Optional noise reduction (opt 005) further enhances signal clarity


• Scalable memory architecture accommodates acquisition length versus sample rate tradeoffs

Typical Applications The DSA81204B addresses high-speed serial protocol debugging, jitter analysis, compliance validation, and multi-channel signal correlation on designs operating from baseband to 12 GHz. Its low noise floor and fast trigger timing suit precision measurements in RF/microwave and digital signal integrity work.

Compatibility & Integration Full compatibility with InfiniiMax II probing system extends measurement bandwidth to 12 GHz. InfiniiMax probe accessories support solder-in, browser, socketed, and SMA connection models. Extensive software packages for jitter analysis, compliance testing, and debug workflows enable customized measurement solutions.