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when using the Characterize Adapter macro I cannot connect to the PNA. firmware version is A.09.90.17.#

By Rachel Beddor The surge in low-speed serial buses in the consumer market has brought about the need for accurate protocol decoders. Traditionally, decoding a serial bus would mean a trip back to your introductory engineering class— lots of counting 1s and 0s. This method is tedious and prone to errors, so a better option is to use
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I would like to have the correct fan on-hand before taking the E4422B out of service for replacement.   The service guide only lists the large fan as p/n E4400-60062 and provides no other information.   I know it is a 12 Vdc fan but can anyone provide its dimensions, or better yet, a suitable vendor and part number? I would like to