Keysight / Agilent / HP 82357B USB/GPIB Interface

The Keysight 82357B USB/GPIB Interface bridges modern USB connectivity with legacy IEEE-488 test instruments. This bus-powered adapter enables direct control and data acquisition from GPIB devices without requiring external power supplies, making it ideal for retrofitting older equipment into current laboratory environments. The interface supports up to 14 GPIB instruments per port and operates at transfer rates up to 1.15 MB/s, with performance advantages for block transfers exceeding 32 KB. Hot-swappable operation allows connection and disconnection without system shutdown.

Technical Specifications Power and Connectivity

USB bus-powered: +5 V, 500 mA max, 200 mA typical

USB 2.0 High-Speed and Full-Speed compliant; USB 1.1 compatible

Standard USB A plug with 2.5 m shielded cable (1,500 insertion cycles rated)

IEEE-488.1 and IEEE-488.2 compliant with standard 24-pin connector

Data transfer rate: up to 1.15 MB/s Configuration

Supports up to 14 GPIB instruments (daisy chain or star topology)

Four 82357B units may connect to a single PC

Parallel polling: eight devices simultaneously

Hot-swappable operation Physical and Environmental

Dimensions: 105 mm L × 64 mm W × 30 mm H (with connector)

Weight: 0.23 kg

Operating temperature: 0°C to +55°C

Status indicators: Ready, Access, Fail LEDs

Key Features

No external power supply required

Compact form factor with flexible shielded USB cable

Block transfer performance superior to conventional GPIB cards above 32 KB

Parallel polling capability for multi-device queries

Compatibility & Integration The 82357B ships with Keysight IO Libraries Suite, including VISA and SICL software stacks. Compatible with Windows 2000, XP Professional, Vista, and Windows 7 operating systems. Integrates with industry-standard software including LabVIEW and MATLAB.