The Keysight 34950A is a 64-bit digital I/O module engineered as a plug-in card for the 34980A Multifunction Switch/Measure Unit. It delivers 64 bidirectional lines organized as eight 8-bit channels, paired with 64 Kb pattern memory per bank, two counter/totalizer channels, and programmable clock generation. This module enables digital pattern simulation and capture, event counting, frequency measurement, and synchronized clocking in automated test systems and data acquisition environments.
Technical Specifications
• Digital I/O: 64 bidirectional lines, configurable as eight 8-bit channels
• I/O Thresholds: Programmable polarity and thresholds from 0 V to 5 V per channel
• Output Drive: 24 mA source/sink current per line
• Pattern Memory: 64 Kb per bank (volatile), supporting pattern generation and capture to 10 MHz
• Handshaking: Configurable protocols per 32-bit bank
• Counter Channels: Two independent channels
• Counter Functions: Event counting, frequency, period, duty cycle, totalizing, pulse width measurement
• Counter Input: Up to 10 MHz
• Clock Output: Programmable 10 Hz to 20 MHz with divide-by-n capability
– Key Features
• Eight 8-bit channels with independent threshold and polarity configuration
• Dual D-sub 78-pin connectors enabling standard cable and terminal block integration
• Pattern memory supports synchronized handshaking on each 32-bit bank
• Two dedicated counter/totalizer channels with multi-function capability
• Programmable clock output with flexible frequency division
– Typical Applications
• Automated digital test and verification
• Real-time pattern stimulus and capture
• High-speed event and frequency counting
• System clock distribution and synchronization
• Multi-channel data logging and control
– Compatibility & Integration
The 34950A operates exclusively within the Keysight 34980A mainframe, a modular eight-slot chassis. The 34980A accommodates up to eight plug-in modules, enabling scalable test system configurations tailored to specific measurement and control requirements.
