The AT-GPIB/TNT is a high-performance IEEE 488 interface card for ISA-equipped computers, delivering IEEE 488.2 Talker, Listener, and Controller functionality through the NI TNT4882C ASIC. This Plug and Play variant automatically allocates hardware resources—I/O address, DMA channel, and interrupt level—eliminating manual jumper configuration. The card sustains data transfer rates exceeding 1.5 Mbytes/s using standard IEEE 488.1 3-wire handshake and supports High-Speed GPIB (HS488) protocol for rates above 1.6 Mbytes/s. A 32-byte FIFO buffer enables overlapped ISA and GPIB transfers, maximizing throughput with byte-to-word packing.
Technical Specifications
• ASIC: NI TNT4882C
• Data Transfer Rate (IEEE 488.1): > 1.5 Mbytes/s
• Data Transfer Rate (HS488): > 1.6 Mbytes/s
• FIFO Buffer: 32 bytes
• Sampling Rate: 20 MHz
• Timestamp Resolution: 50 ns
• Maximum GPIB Devices: 14 (expandable via bus extenders)
• Power Supply: +5 VDC, 120 mA typical / 200 mA maximum
• Operating Temperature: 0°C to 40°C
• Storage Temperature: -20°C to 70°C
• Operating Humidity: 10% to 90% RH, non-condensing
• Storage Humidity: 5% to 90% RH, non-condensing
– Key Features
• Full-height ISA card form factor (107 mm × 165 mm)
• 16-bit ISA bus interface (8-bit compatible with DMA disabled)
• Standard 24-pin IEEE 488 connector
• Automatic resource allocation via Plug and Play configuration
• NI-PNP utility support for DOS and Windows environments
– Compatibility & Integration
Supports DOS, OS/2, and Windows versions through Windows XP/2000. Compatible with PC AT systems featuring ISA slots.
