Keithley 24681A(DAS-4100Addendum) free download

File name 24681A(DAS-4100Addendum).pdf

DAS-4100 Series Addendum This document describes changes made to the DAS-4100 Series boards in order to achieve compliance with the European EMC directive 89/336 EEC (CE Mark certification). In addition, this document provides additional information about the boards that was not available when the user's guides were printed. Clock Output Pin 5 of U700 (74ABT125) has been lifted in order to disable the clock output function. If you connect multiple DAS-4100 Series boards and want to use one internal clock for all the boards, you need to replace the pin. New Bracket To prevent radiation from the openings around the SMB connectors, a new bracket is now used with an RF gasket on the DAS-4100 Series boards. DAS-4100 Series Boards in an Expansion Chassis The DAS-4100 Series boards do not operate in an expansion chassis. You must install these boards in the host computer. Part No. 24681; Revision A November 1999