If its not Tek or HP and if its HP before the 1740, its not really a
scope that works well and reliably. Yes there were pretenders but their
products tended to be poor with poor bandwidths and lousy sweep
triggering. The Tek 465 except for the delayed sweep switch and the HP
1740 or 1742 have been reliable tools that work well and are FLAT to
their bandwidth spec, not 3 dB down a the bandwidth spec. These are 200
MHz and most logic glitches will be seen by them. A 30 MHz scope can
miss glitches that logic can make. With my 475 on the bench I used it
for DC through UHF measurements and set the VTVM on the back test
equipment shelf. I quit using a meter with a GOOD DC scope available.
73, Jerry, K0CQ
On 7/11/2010 9:22 AM, Michael Goins wrote:
What about the more uncommon brands? Outside of Tek, B&K, Sencore are a
number of more high end and less expensive scopes. I am sort of "Joe
average" ham - build some, design a little, and want to design more and be
able to troubleshoot deeper.
I don't think I need a 200 MHz all-the-bells-and-whistles scope, but I'm not
sure a 50 MHz is the best choice either - at least based on the information
I received from some of the knowledgeable guys here.
What I have planned is some design, more troubleshooting - deeper trouble
shooting.
I can most certainly appreciate the guys who have and know how to use a
cutting-edge scope at ultra MHz, but I'm wanting to also upgrade some other
test gear and funds are limited. I'm not talking about cheaping out here,
but judicious use of what money I have to do this with. I don't operate
above 6 meters - and 99% of the time I'm in the 10-40 meter range. To keep
costs as reasonable as possible, why wouldn't something like a 60 MHz of any
respectable manufacturer do 99% of what I would ever need?
Mike, k5wmg
Pipe Creek, Texas
Fast cars, slow boats, big dogs, old trucks, little radios, and summers off
to write
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