✅ Core Parameters (Simplified)

Bus: 16-bit ISA (AT) Full-length card (non-PCI)

Controller chip: TNT4882C ASIC (integrated Talker/Listener/Controller + HS488 high-speed protocol)

Standard: IEEE 488.1 / 488.2 fully compatible

Rate:

Standard 3-wire handshake: >1.5 MB/s

HS488 high-speed mode: Higher (≈7.7 MB/s level, depending on the system)

Number of connected instruments: Up to 14 GPIB instruments

Connector: Standard GPIB (IEEE488) 24-pin female port

Driver: NI-488.2 (DOS/Win9x/WinNT, does not support modern Win10/11)

Version:

AT-GPIB/TNT (PNP): No jumpers, plug-and-play (recommended)

AT-GPIB/TNT (Legacy): DIP switch / jumper for setting addresses / interrupts

AT-GPIB/TNT+: With GPIB protocol analyzer (rare)

Order Number (Example): 778036-01 (PNP), 776786-01 (Legacy)

?? Key Features

ISA old card: For DOS, Windows 95/98, NT4.0 old-fashioned industrial control computers, not PCI/USB/CompactDAQ

Full-function GPIB controller: Can be used as master (Controller), speaker / listener, replacing traditional GPIB controllers

High-speed HS488: Faster by several times than ordinary GPIB, suitable for high-speed instrument data acquisition

Software compatibility: Supports NI development environments such as LabVIEW, LabWindows/CVI, Measurement Studio

?? Typical Applications

Old test systems: GPIB instrument control (oscilloscopes, signal sources, multimeters, spectrum analyzers)

Industrial automation: Data acquisition and control of old production line instruments

Replacement parts: Maintenance and upgrade of the original AT-GPIB/TNT system