What ESD Testing Has Been Done for the GPIB TNT4882 ASIC? Hardware: GPIB
Problem: How ESD (Electrostatic Discharge) resistant is the TNT 4882 chip and what pulse tests has the chip been through. In other words, what ways has the TNT4882 ASIC been tested? Has it been tested for Electrical Fast Transient Immunity, as per IEC-1000-4-4 (with a 500V or 1kV spike with 5ns rise and 50ns fall times)? Solution: ESD: The TNT4882 chip has passed the CE ESD tests with no external circuitry on every National Instruments product tested. The GPIB signals are routed directly to the GPIB connector. No buffering is needed between the TNT4882 ASIC and the ISA bus or GPIB bus. IEC-1000-4-4: IEC 1000-4-4 is a slightly updated version of a Basic Standard known as IEC 801-4 that is currently/historically done for the CE Mark. The updated Basic Standards (1000-4-X) are used by some of the newer Product Family (or generic) EN standards. This test has been run at 500 Volts on numerous occasions on GPIB cables/boards/boxes, many with the TNT chip, though this aspect was not tracked. The bulk of the tests have been with an X2 cable. An X1 cable was used, but in fewer tests. Higher voltages have not been attempted but the I/O ports are expected to easily endure a 1000 Volt test. Related Links: Attachments:
Report Date: 04/09/1997 Last Updated: 03/22/2007 Document ID: 0W87PRVD |
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