The Keysight (Agilent) E4861A is a single-slot VXI mainframe module designed to host two front-end plug-in cards for integrated high-speed digital test and measurement. It accommodates ParBERT 81250 series front-end cards to deliver pattern generation and analysis across data rates from 333 Mb/s to 2.7 Gb/s, supporting both differential and single-ended signal I/O. The E4861A enables flexible configuration of specialized test functionalities within a standardized VXI chassis architecture.
Technical Specifications
Data Rate Performance:
• 333 Mb/s to 2.7 Gb/s (with E4862A/E4863A front-end cards)
• 333 Mb/s to 1.65 Gb/s (with E4864A/E4865A front-end cards)
Generator Module (E4862A or E4864A):
• Output amplitude: 0.5 to 1.8 V peak-to-peak
• Transition time (20%-80%): Typically 90 ps
• Data mode jitter: Less than 50 ps peak-to-peak
• Clock mode jitter: Less than 5 ps rms
Analyzer Module (E4863A or E4865A):
• Input impedance: 50 Ohms
• Input sensitivity: 50 mV
• Maximum input voltage range: -2 V to +3 V
Pattern Capabilities:
• Pseudo-random word sequences (PRWS)
• Standard PRBS patterns up to 2^31-1
• Memory-based patterns up to 64 Mb
– Key Features
• Single VXI slot footprint with dual front-end card capacity
• Supports both differential and single-ended signal configurations
• VXI bus compliant for mainframe and module integration
• Modular design enables system reconfiguration and expansion
– Compatibility & Integration
The E4861A integrates with Keysight ParBERT 81250 series front-end cards: E4862A and E4864A (generator modules) or E4863A and E4865A (analyzer modules). It operates within the VXI architecture, allowing consolidation with other VXI-compliant instruments and mainframes for custom multi-function test systems.
