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Network Analyzer 8753C

Question asked by ALEX1BDB on Dec 6, 2007
Latest reply on Feb 21, 2008 by Dr_joel
8753C   AGAIN!     Proms rev : 4.12

    My unit fail on routine test 5 : DSP  R/W... H P  solution : change CPU card "A9"  not easy to find one ?

   I am trying to investigate with a logic analyzer..., but I do not know details on what this routine is doing. Probably writing something to MAIN  RAM and the DSP reads and responds ??

  Any idea / suggestion welcome,