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DSOX3024 HV DC Offset

Question asked by Willco788 on Dec 12, 2011
Latest reply on Jan 7, 2012 by JohnMiles
While measuring ripple on a 600v power supply, with the channel input set to AC and 100:1, there's a DC offset.  I'm using an after market (TPI), 100:1 probe.    I'm not getting the offset at 300 volts using the Agilent or the TPI probe.  When I connect the TPI probe to my old "Tek" analog scope, there's no offset at 600v.  To me it appears that there's a leaky coupling capacitor on the vertical input. Is there something wrong with my 3024?  Is this something I should be concerned with?