Subject: Re: Which older Tek scopes are considered good buys? What specs to look
Date: Tue, 24 Sep 2002 22:24:21 -0700
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My experience with TEK scopes is that they're either IN calibaration
or seriously busted. If you are required by some document to use
equipment, you have no chioce but to get it calibrated. For hobby use,
It's very likely close enough...or seriously busted.
You can easily check the calibration against
a DVM and a counter. The bad news is that there are tweeks in there who's
is not obvious. You can tweek the wrong stuff and get the whole thing
Bottom line, check the voltage calibration against your power supply and
Put in a signal that you can verify with a counter and check the sweep
If it's close, don't mess with trying to make it exact. If it ain't
broke, don't fix it.
The little lost angel wrote:
> On Wed, 25 Sep 2002 03:44:16 GMT, firstname.lastname@example.org (Spam Hater)
> >I picked up a 465 (which is a 100MHz scope) on eBay for $50.
> >For PIC and AVR stuff, it's plenty fast. If I was designing a modern
> >motherboard, or a high speed FPGA, I'd be tossing it off the bridge.
> Could you define high speed? 200Khz? Naturally I don't expect it to be
> good for anything above 50Mhz rite? And was advised that the scope
> should be at least 5x~10x the data rate, so at best here 10Mhz?
> >Cost to repair now exceeds value, so beware. Actually, cost to
> >-calibrate- exceeds value, so...
> How much does it cost to calibrate these things? Or is it possible to
> self calibrate?
Bunch of stuff For Sale and Wanted at the link below.