Agilent/Keysight 69771A - Digital Input / Analog Comparator Card

The Agilent/Keysight 69771A is a Digital Input/Analog Comparator Card engineered for integration into modular test and measurement systems. The card provides digital input capabilities for monitoring external signals and incorporates an analog comparator function for threshold-based signal detection. It delivers precise control and monitoring of analog and digital signals within automated test equipment (ATE) environments, laboratory setups, and industrial automation platforms.

Technical Specifications

Digital Inputs

• Receive standard logic-level signals


• Exact input count and type specifications available in product manual Analog Comparator


• Compares input analog signal against user-defined threshold


• Output state indicates signal level relative to threshold (above or below)


• Threshold range and accuracy specifications in technical documentation Interfaces


• Integration via proprietary backplane or standard communication bus


• Compatible with PXI, LXI, or dedicated Keysight system interfaces Power & Electrical


• Power consumption and voltage requirements dependent on host system


• Operates within specifications of compatible Keysight platforms


• Input voltage levels support TTL and CMOS compatibility Form Factor


• Plug-in card design for modular instrument chassis


• Dimensions and mounting specifications proprietary to host chassis

Key Features

• Flexible modular architecture enabling custom system configurations


• Simultaneous digital input monitoring and analog threshold comparison


• Integration into broader Keysight instrumentation ecosystems


• Hardware-based signal conditioning for real-time detection

Typical Applications

• Automated test equipment signal monitoring and control


• Laboratory measurement systems requiring threshold detection


• Industrial automation systems with mixed-signal requirements


• Multi-instrument test platform configurations

Compatibility & Integration The 69771A installs into Agilent and Keysight modular chassis platforms. Operation requires appropriate drivers and software support - typically Keysight's IO Libraries Suite or host-specific drivers compatible with installed test executive software. Verification of chassis compatibility prior to procurement is essential.