[sdiy] HP 54602B selling on eBay.. DC vertical offsets on some channels or what ??

Jean-Pierre Desrochers jpdesroc at oricom.ca
Mon Apr 5 17:10:47 CEST 2021


I'm looking for a used 4 channels scopes on eBay.

I have preferences for HP and Tektronix.

 

Anybody owns (or owned) this type of scope ?

https://www.ebay.ca/itm/124166473008? <https://www.ebay.ca/itm/124166473008?&ul_noapp=true&autorefresh=true> &ul_noapp=true&autorefresh=true

 

Looking at the 10th picture showed: 
All the 4 channels are on the screen but it looks to me that 

some of them shows DC offsets (no probes connected..)
I can see the channel#1 ref dot line completely alone 

but many signal lines are over it.. 

Channel#1 at 2.00mv/div

Channel#2 at 5.00mv/div

Hmmm...

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