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frosty1 infiniium 54810a scope displays 4 channels but has only 2

Question asked by frosty1 on Jan 31, 2015
            hi can any one help I have a infiniium 54810a v#033 2 channel scope but it's showing 4 channels on the display and in the setup drop down box and if selected will give traces for channels 3 & 4 but it does not have inputs for 3 & 4.
Can you help or advise please