Agilent / Keysight E1330A Quad 8-Bit Digital I/O

The Agilent/Keysight E1330A is a quad 8-bit digital I/O module for VXI-based automated test systems. It delivers 32 independent digital I/O lines organized into four configurable 8-bit ports, each supporting TTL logic levels with selectable positive or negative true logic polarity. Ports operate independently or combine for byte (8-bit), word (16-bit), or long-word (32-bit) data transmission, as well as individual bit access.

– Technical Specifications

Module Architecture
• Form Factor: B-size, 1-slot register-based VXI device
• Total I/O Lines: 32 digital I/O across 4 independent ports
• Port Configuration: Each 8-bit port selectable as input or output
• Logic Levels: TTL compatible
• Logic Polarity: Positive or negative true logic, configurable per port

Data Transmission Modes
• Single-bit transmission
• Byte (8-bit) transmission
• Word (16-bit) transmission via port combination
• Long-word (32-bit) transmission via port combination

Handshake and Control
• Three handshake and control lines per port (SCPI-accessible)
• Flag lines usable independently or combined for multi-word operations
• Three register-accessible control lines: PIR (peripheral interrupt), /RES (peripheral reset), and STS (status)

Interrupt Handling
• E1330A Model: Release on Register Access (RORA) interrupt implementation—request line asserted until Port Control/Status register access
• E1330B Model: Release on Interrupt Acknowledge (ROAK) interrupt implementation—request line de-asserted during interrupt acknowledge cycle

Environmental
• Operating Temperature: 0°C to +55°C
• Storage and Shipment Temperature: -40°C to +75°C

– Key Features

• Register-based VXI architecture for direct system integration
• SCPI programming support for simplified control
• Flexible port pairing enables scalable data word sizes
• Independent handshake control per port
• Dual 60-pin rear-panel connectors for user connections

– Typical Applications

Automated test equipment requiring multi-bit digital control and monitoring, parallel data acquisition, custom handshaking protocols, and interrupt-driven test sequencing in VXI chassis environments.

– Compatibility & Integration

The E1330A integrates directly into VXI systems via register access and supports SCPI command sets. TTL logic compatibility enables connection to standard digital logic and interface circuits.