[sdiy] HP 54602B selling on eBay.. DC vertical offsets on some channels or what ??
jschwich53 at comcast.net
Mon Apr 5 22:22:23 CEST 2021
I'm not familiar with that model. I've 1000s of hours using scopes
mainly (99.99%) Tek scopes.
What I will say about buying an used scope is unless it comes with a
current (less than a year old) calibration certificate add the bucks it
costs to get calibrated it professionally if you want accurate
measurements. That might get rid of the offset. No you shouldn't need a
short probe to test the offset, no probe should work.
Personally I thing getting one of the cheap digital scopes now days is a
better option. You have digital measurements and bus decoding which make
life a lot easier than having to count ticks and do math for
measurements and manually decode buses.
On 4/5/2021 8:10 AM, Jean-Pierre Desrochers wrote:
> 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 ?
> 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
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