The Agilent/Keysight 4951A is a portable protocol analyzer engineered for field service, installation, and maintenance of data communication systems. It delivers real-time and post-processing data analysis, protocol decoding, network component simulation, and comprehensive troubleshooting capabilities in a compact form factor. The unit supports multiple protocol standards and provides automated line parameter detection, making it essential for diagnosing and resolving network operational issues across diverse communication environments.
Technical Specifications
• Data Transmission Rates: 50 to 19.2 kbps
• Memory: 32 Kbytes of nonvolatile memory for data, timing, and lead status; additional nonvolatile memory for test setups, monitor programs, and simulate programs
• Optional Mass Storage: Cassette tape (Option 001) provides 512 Kbytes for long-term data and program storage
• Supported Protocols: Async, BSC (Bisynchronous), SDLC (NRZI), HDLC, X.25, SNA, DDCMP, IPARS, character-oriented protocols (ASCII, Baudot, IBM EBCDIC), and user-defined protocols
• Dimensions: 11.2 cm (H) × 25.9 cm (W) × 28.6 cm (D) / 4.4 in. (H) × 10.2 in. (W) × 11.3 in. (D)
– Key Features
• Auto-configuration automatically determines line parameters and initiates data monitoring
• Six software-defined keys (softkeys) provide rapid access to troubleshooting functions
• Bit error rate testing (BERT) assesses line quality and link-level performance
• Asynchronous terminal emulation and 3270 equipment support
• Remote data and program transfer via dedicated RS-232C/V.24 port
• External video viewing through standard RS-170 video port
• PC utility compatibility for remote control and offline data analysis
– Typical Applications
• Field installation and commissioning of data communication networks
• Network maintenance and operational diagnostics
• Protocol troubleshooting and performance verification
• 3270 equipment installation and support
• Link-level performance analysis
– Compatibility & Integration
The 4951A integrates with PC-based utilities for enhanced analysis workflows and supports remote operations through standard serial and video interfaces.
