Keysight (Agilent) 1690A PC-Hosted Logic Analyzer

The Keysight (Agilent) 1690A is a PC-hosted logic analyzer delivering simultaneous state and timing analysis for embedded systems and digital hardware debugging. Operating from a Windows-based host via IEEE 1394 connection, this instrument captures and displays digital signals with high resolution across 136 channels, isolate timing violations, bus contention, and signal integrity issues in real time. The 1690A supports offline analysis on separate PCs, making it well-suited for design verification, hardware integration, and field troubleshooting workflows.

Technical Specifications

• Conventional timing: 800 MHz (half-channel) / 400 MHz (full-channel)


• Conventional timing memory: 1 M (half-channel) / 512 K (full-channel)


• Transitional timing: 200 MHz with 256 K memory depth State Analysis


• Maximum state speed: 200 MHz


• Memory depth: 256 K


• Synchronous sampling to system under test with microprocessor and bus cycle capture Channel Configuration


• Total data channels: 136


• Clock/data channels: 4


• Single-ended signal support


• Threshold adjustment: −6 V to +6 V in 10 mV increments Physical & Power


• 12.1-inch color display


• Auto-sensing power input: 115 VAC to 230 VAC


• Nominal maximum power: 76 W (1690A) / 200 W (AD-series)


• Minimum clearance for cooling: 5 cm

Key Features

• Automated threshold and sample position setup for high-speed buses


• Simultaneous eye diagrams on all channels for rapid signal identification


• Bus transaction decode and mnemonic conversion


• Dual IEEE 1394 ports for external storage and host connection


• Trigger In/Out (BNC) for external device synchronization


• 10/100Base-T LAN for network printing and result sharing


• Parallel printer port for graphics output


• External video port for larger display connection

Typical Applications Microprocessor and embedded system verification, high-speed bus analysis, signal integrity debugging, multi-channel protocol capture, hardware design validation.

Compatibility & Integration Operating systems: Windows XP Professional and Windows 2000 Professional. Compatible with 34-channel low voltage Mictor probes (E5351A). Host PC connection via Agilent E5851.