Keysight (Agilent) E2677A InfiniiMax 12 GHz Differential Probe Head

The Keysight E2677A InfiniiMax differential probe head delivers 12 GHz bandwidth for precision measurement of high-speed differential signals in advanced circuit environments. This probe head integrates with Keysight InfiniiMax probe amplifiers and compatible Infiniium oscilloscopes to enable accurate signal capture with minimal loading and distortion.

– Technical Specifications

Electrical Performance
• Bandwidth: 12 GHz specified, 12.5 GHz typical
• Input impedance: 100 Ω nominal
• Attenuation ratio: 10:1 typical
• Maximum input voltage: ±15 V (DC + peak AC) or ±5 V (DC + peak AC)
• Input capacitance: ≤270 fF or <0.2 pF
• Input inductance: <0.5 nH
• Rise time: <30 ps

Physical Configuration
• Lead length: 4 inches
• Variable lead span: 0.2–3.3 mm (8–130 mils)
• Probe body: Stainless steel
• Probe tip: Tungsten
• Connection options: Solder-in, socketed
• Damping resistors: 20 full bandwidth, 10 medium bandwidth

Operating Environment
• Temperature range: -40°C to +85°C
• Extreme temperature range: -55°C to +150°C with extension cables

– Key Features

• Differential probing architecture minimizes crosstalk and common-mode noise for precise differential measurements
• Low input capacitance (≤270 fF) reduces circuit loading and signal distortion
• Sub-30 ps rise time supports clean pulse edge acquisition
• Compact form factor enables access to densely populated boards
• Dual connection modes accommodate both permanent solder-in and temporary socketed installations
• Tungsten probe tips provide durability and stable contact

– Typical Applications

• High-speed serial bus characterization (differential pairs)
• Power integrity and signal integrity analysis on advanced PCBs
• Mixed-signal circuit validation during design verification
• Transient capture on differential clock and data signals

– Compatibility & Integration

The E2677A probe head connects directly to Keysight InfiniiMax probe amplifiers (InfiniiMax I and II series) and interfaces with Infiniium DSO/DSA 80000 and DSO/DSA 90000 oscilloscopes. This architecture decouples probe front-end design from oscilloscope analog-to-digital conversion, enabling flexible measurement configurations across multiple instrument generations.