Re: Tektronix 2440 waveform noise above 200nS timebase

 

Note that the amplitude flatness of the SG503 is only spec'ed when a particular BNC cable is used.The cable part number ( 012-0482-00) is stenciled right on the front panel, but it may not be there on earlier serial numbers.My SN is BO63557 & it has the stencil.
 HankC, Boston WA1HOS

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