The Ziatech ZT 1444A is an IEEE 488 interface card for IBM PC/AT and compatible systems, providing complete controller and talker/listener functionality for test and measurement instrument integration. The card delivers up to 450 Kbytes/second data transfer via Direct Memory Access (DMA) and supports up to 15 devices per port, enabling connectivity with over 4,000 IEEE 488-compatible instruments. Designed for 8-bit ISA short I/O slot installation, the ZT 1444A implements IEEE 488.1 and IEEE 488.2 standards using 16 signal lines—8 data (DIO1-DIO8) and 8 control—within a 24-wire shielded cable. Byte-serial, bit-parallel data transfer is controlled via handshake lines (DAV, NDAC, NRFD) and interface management lines. An on-board hardware-based security option protects OEM software investments.
Technical Specifications
• Data Transfer Rate: Up to 450 Kbytes/second with DMA
• Device Connectivity: Up to 15 devices per port
• Bus Interface: IEEE 488 (IEEE 488.1 and IEEE 488.2 standards)
• Signal Architecture: 16 signal lines (8 data, 8 control) in 24-wire shielded cable
• Data Format: Byte-serial, bit-parallel transfer
• Handshake Protocol: DAV, NDAC, NRFD control lines
• Form Factor: 8-bit ISA short I/O slot compatible
– Key Features
• Complete IEEE 488 Controller, Talker, and Listener capability
• Direct Memory Access (DMA) support for efficient data transfer
• On-board hardware-based security option for software protection
• Interface with over 4,000 IEEE 488-compatible instruments
– Typical Applications
• Automated test equipment (ATE) integration
• Data acquisition from distributed measurement instruments
• Laboratory instrument control and coordination
• Multi-device instrument communication systems
– Compatibility & Integration
• Host Systems: IBM PC/AT and equivalent personal computers
• Slot Type: 8-bit ISA short I/O slot
• Instrument Base: Compatible with 4,000+ IEEE 488 devices
