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.
