🚀 go-pugleaf

If you are going to do much digital work, you really should try to
get a 100 Mhz - 150 MHz bandwidth scope.  To make reasonably
accurate rise time measurements, you need approximately 10 times
input bandwidth versus the repetition rate of the signal.  Yes, it
is possible to compute rise times from a scope with a more limited
bandwidth, but it is rather inconvenient and best left as an
exercise for an engineering school measurement techniques course.

I've got an old Tektronix 547 at home that has a less than 30 MHz
bandwidth, but that is somewhat mitigated by having a 1S1 sampler
plug-in unit for > 1 GHz sampling, but that is only useful for
repetitive signals.

Having extended bandwidth also assists greatly for spotting
glitches in pulses.  You'll definitely appreciate that if you do
any fiddling around with digital stuff.  I've had a Tek 2445 on my
bench here at work for about 8 years now, and have been quite
pleased with it.  The 2445 doesn't have nearly the bells and
whistles of some of the newer units, but it does have 150 MHz
bandwidth, four inputs, triggered/delayed/intensified sweep and
measurement cursors.  I'd imagine that 2445s are probably starting
to come down in price in the surplus market now.  In the unlikely
event a 2445 shows up at a hamfest, it is usually gone in a few
minutes.

By the way, if anybody has a working 1L5 spectrum analyzer plug-in
to get rid of, I might be interested....


-- 
Bill Mayhew      NEOUCOM Computer Services Department
Rootstown, OH  44272-9995  USA    phone: 216-325-2511
wtm@uhura.neoucom.edu (140.220.1.1)    146.580: N8WED