At 10:05 AM 6/10/97 -0700, you wrote:
>>At 02:28 PM 6/6/97 -0500, you wrote:
>>>> Oscilloscope:
>>>>      Radio Shack sells el cheapo digital scoope. It's about $100. It
has a
>>>> small LCD display and it also hooks up to a PC via RS232. Fastest
sampling
>>>> rate is 5 ns, but it doesn't have filters before the digitizing process.
>>>> This means you'll see many foldovers if you sample high frequency stuff.
>>>> It's good for quick and dirty stuff. In fact, I think it's a cheapest
5 MHz
>>>> oscilloscope one can buy (digital or analog).
>>>
>>>What's the grounding situation if the thing is plugged into a PC?  Does
>>>it have any opto-isolation?  If not, does its output have enough "oomph"
>>>do drive an opto?
>>>
>>
>>I bought one of these oscilloscopes. It is a nice idea, but the way it is
>>implemented is little more than a toy, in my opinion. It has a 10MHz
>>sampling rate (useful), but has 3 ranges, 1, 10, and 100 volts. It has
>>about 4 (preset) trigger levels. The graphics looks good on the computer,
>>though. You could build a little box to improve the input attenuator, and
>>the trigger level, but I didn't. I bought a Tektronix TDS 220 instead. That
>>is a real nice little oscilloscope!
>>
>Andrew;
>
>You say you got a Tektronix TDS 220 Scope I was looking at it but the price
>sounded
>to good to be true.  I think it was around $995.00.  Hows the LCD display?
>From the
>spec. sheet sounds like a real neet gadget... I'm tired fo lugging around my
>Tek 2246.
>
>David Jeffers
>OSP Technologies, Inc.
>

David; Check out the Tektronix web site at www.tek.com or
www.tektronix.com. Complete specs. $995 is the list price for the 60MHz
TDS210. The TDS220 is identical to it but 100MHZ. List price is $1695. I
read in the Dutch magazine Elektuur (Dutch language version of Elektor)
that TEK is raising the price on those scopes substantially the first of
July. I'm sure that means the same thing in this country (USA). Better get
yours before the price goes up.