The Keysight (Agilent) E2668A InfiniiMax Differential Connectivity Kit is a specialized accessory designed to extend the probing capabilities of InfiniiMax 1130 Series probe amplifiers for single-ended measurements. This kit provides a complete set of probe head types and connection accessories to enable flexible signal acquisition across a range of probing scenarios in high-speed digital design verification.
Technical Specifications
System bandwidth is determined by the lower of the probe amplifier and probe head bandwidths. The kit accommodates variable resistor configurations depending on measurement requirements:
• Solder-in probe head: 91 ohm resistors (full bandwidth), 0 ohm resistors (full and medium bandwidth), 150 ohm resistors (medium bandwidth)
• Socketed probe head: 82 ohm resistors (full bandwidth)
Socket specifications include 25 mil square pins with female connectors on both ends, plus a variant with 25 mil female socket paired with 20 mil round male pin.
– Key Features
The E2668A includes three distinct probe head configurations:
• Browser probe head (E2676A): Hand-held design with variable tip spacing and Z-axis compliance, supporting measurements up to 6 GHz
• Solder-in probe head: Semi-permanent connection method for fine-pitch, high-density applications
• Socketed probe head: Facilitates rapid test point relocation with hands-off operation, bandwidth support up to 8 GHz
Each probe head type provides ergonomic handles and complete connection accessories for immediate deployment.
– Typical Applications
This kit addresses high-speed digital design development and signal integrity verification where accurate single-ended measurements are critical. The multiple probe head types enable engineers to select the optimal probing strategy for specific test scenarios, from temporary hand-held acquisition to semi-permanent board-level installations.
– Compatibility & Integration
The E2668A is engineered exclusively for Keysight InfiniiMax 1130 Series probe amplifiers and belongs to the InfiniiMax I generation. InfiniiMax I probe heads are not compatible with InfiniiMax III/III+ amplifiers. Probe head selection should account for required measurement bandwidth, as socketed configurations support higher frequencies (up to 8 GHz) compared to browser heads (up to 6 GHz).


















