Keysight / Agilent / HP 44721A Terminal Block

The Keysight/Agilent/HP 44721A Terminal Block is a connection accessory for data acquisition systems that provides an organized interface for discrete external wiring. It enables reliable and repeatable signal connections to the 3852A Data Acquisition System and related digital input modules, serving as a detachable wiring hub for logic readings, totalize measurements, and interrupt generation.

## Technical Specifications

• **Wire Size Support**: Accepts up to 20 AWG wire; 24 AWG when all 144 lines are populated
• **Connection Type**: Screw-type terminals for secure external wiring connections
• **Signal Type**: Digital input signals for logic readings, totalize count measurements, and interrupt generation

## Key Features

• Screw-type terminal construction enables flexible, detachable wiring configurations
• Multi-line architecture supports organized signal routing across numerous discrete connections
• Facilitates repeatable connection schemes for consistent instrument setup and reconfiguration

## Typical Applications

The 44721A terminal block serves data acquisition workflows requiring multiple discrete digital input connections. Use cases include logic signal monitoring, pulse counting and totalization, and interrupt-driven measurements across industrial and laboratory test environments.

## Compatibility & Integration

**Primary System**:
• Keysight/Agilent/HP 3852A Data Acquisition System

**Compatible Modules**:
• Keysight/Agilent/HP 44721A Digital Input Module
• Keysight/Agilent/HP 44722A Digital Input Module

The terminal block connects directly to these modules via screw terminals, eliminating the need for intermediate connectors and enabling direct integration into existing 3852A-based measurement setups.