Hi
I'm thinking about buying a scope. I've seen many people recommend
getting an old analog scope, but they're big! I borrowed a compact 100
MHz digital scope from work, and it was nice. 50 MHz scopes are a lot
cheaper, though.
Will I regret getting a 50 MHz scope instead of a 100 MHz one?
Jon,
For use on the HF bands, go for a 'scope rated at 100 MHz or higher, and
be certain to use probes that are also rated for 100 MHz or more.
The frequency rating of a 'scope is the point where the vertical
response is down 3 dB, so you will not be able to do valid voltage
measurements at
hel...@acm.org
Cc: 'Elecraft List' elecraft@mailman.qth.net
Sent: Thursday, May 21, 2009 8:02 AM
Subject: Re: [Elecraft] Oscilloscopes
Jon,
For use on the HF bands, go for a 'scope rated at 100 MHz or higher, and
be certain to use probes that are also rated for 100 MHz or more.
The frequency
Don covered it nicely. Unless you know you'll never use the scope for
anything but routine linearity checking and other simple measurements in the
HF range, get as much bandwidth as the budget allows in both the
oscilloscope itself and the probes.
The point is that if you put a 50 MHz square
Jim,
You have to know the 'scope specs. The Tek 475 scope is a 200 MHz
'scope, the 465 is 150 MHz.
The frequency rating of the probes will also provide an upper limit.
The resolution on the time axis is quite a different consideration than
the frequency rating for the amplitude (and rise
On Thu, 2009-05-21 at 10:20 +0200, Jon Kåre Hellan wrote:
Hi
I'm thinking about buying a scope. I've seen many people recommend
getting an old analog scope, but they're big! I borrowed a compact 100
MHz digital scope from work, and it was nice. 50 MHz scopes are a lot
cheaper, though.
On Thu, 2009-05-21 at 08:13 -0700, Ron D'Eau Claire wrote:
I agree with Don, I like analog scopes. Any time a signal is taken to bits
(literally!) and then reassembled there are display artifacts and some
accuracy of the waveform is lost but, you're quite right, analog scopes are
*big* and
I would stay away from early hp digitals, they are nothing but
trouble, just take my word on this one, you are better off with a 2430
(might have dyslexic on the number)
The new digital lunchboxes are nice too, and if you know what you are
doing you have no problems, I attribute the 'old timers'
On Thu, 2009-05-21 at 11:31 -0500, Matt Palmer wrote:
... Since I grew up with a
infiinium, i've never had a problem seeing and removing aliasing
errors and others, but you have to have a decent sense for what to
expect to see, and know which way to turn what knobs to make it look
right.
What is the rating of my Techtronics 475?
We used them at work for required adjustments to tolerances
of 2/10 nanoseconds.
Thanks es 73, de Jim KG0KP
For any common model you can easily find info on the web if you aren't sure.
Bandwidth for scopes is like horsepower for a performance
: [Elecraft] Oscilloscopes
Jon,
For use on the HF bands, go for a 'scope rated at 100 MHz or higher, and
be certain to use probes that are also rated for 100 MHz or more.
The frequency rating of a 'scope is the point where the vertical
response is down 3 dB, so you will not be able to do valid
-online.net;
elecraft@mailman.qth.net
Sent: Thursday, May 21, 2009 1:21 PM
Subject: Re: [Elecraft] Oscilloscopes
Jim:
Just GOOGLE for 'tektronix 475' and then select one or more of the
links.
I quick search shows that the Tek 475 is a 200 MHz o'scope.
73,
Tom N0SS
At 10:06 05/21/2009, you wrote
Is there a significant difference between the 465 and the 475?
K4GM- George
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Depends on your definition significant.
I had both in a shop and both preformed well for almost all applications. At
DC, audio or video they were virtually identical. At high speed data in the
10 to 150 mbs range the 475 was preferred. RF over 50 MHz the 475 was
better.
The 475 has slightly
Looks like Jim got the info he needed. Lets end this thread for now.
73, Eric WA6HHQ
Elecraft Moderator, and Dayton surviver.
Jim Miller KG0KP wrote:
Thanks everybody on the Tek 475 info. I use Google for a lot of things -
why don't I think of it in a case such as this ??? Old age gets
I'm considering getting an oscilloscope and could use suggestions for an
inexpensive used scope.
Has anyone used the Pico Tech software scopes? The entry level USB scope runs
about $250.
Rich
NU6T
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Post to:
Poor John asked if he could use spectrogram as an oscilloscope, and that's
morphed into recommendations to buy a 400 MHz scope! In my last job I was the
video amplifier design guy, and in that role I designed video amplifiers to
drive CRTs in high-resolution industrial computer displays. Over
By the way, one more comment on Tek scopes .. I loved the 475, REALLY loved the
2465, but I can barely tolerate Tek's DSOs... Maybe I'm just to dumb to use
them, but I think the menu structures in most of the Tektronix digital scopes
are non-intuitive and obtuse. If you want a really neat
Jim, AB4CZ gave you an excellent summary.
If you think you'd like to use the 'scope for general bench work to look at
waveforms, etc., on HF gear, then look for one with at least a 200 MHz
bandwidth.
Smaller bandwidth scopes are fine for a simple check on your transmitter
waveform, but one of
Tektronix 475, baby! The 465 is OK, and the 485 a real 400MHz work of
analog scope art I hope to own someday. Then if you're really serious
you have a 7000-series mainframe and a lot of plugins hehe.
A really good tutorial on scopes is Tektronix's The XYZ's Of Using A
Scope which they used to
Alex NS6Y wrote:
Tektronix 475, baby! The 465 is OK, and the 485 a real 400MHz work of
analog scope art I hope to own someday...
--
Yep, Tek scopes are the most popular and they are very good. In the 1970's
when I was running a television production studio we had to
I have a 475 with the DM44 option, and a scad of different probes.
It is on semi-permanent loan from my company (they have no need for it
any longer). I have never used the DM44, but what looks interesting is
that it will measure temperature in degrees C. I have the temperature
probe and
Claire [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Sent: Monday, January 23, 2006 9:13 PM
Subject: Re: [Elecraft] Oscilloscopes (WAS: spectrogram)
Tektronix 475, baby! The 465 is OK, and the 485 a real 400MHz work of
analog scope art I hope to own someday. Then if you're really serious
you have
PROTECTED]
To: elecraft@mailman.qth.net
Sent: Monday, January 23, 2006 9:56 PM
Subject: Re: [Elecraft] Oscilloscopes (WAS: spectrogram)
I have a 475 with the DM44 option, and a scad of different probes.
It is on semi-permanent loan from my company (they have no need for it
any longer). I have
, January 23, 2006 9:13 PM
Subject: Re: [Elecraft] Oscilloscopes (WAS: spectrogram)
Tektronix 475, baby! The 465 is OK, and the 485 a real 400MHz work of
analog scope art I hope to own someday. Then if you're really serious
you have a 7000-series mainframe and a lot of plugins hehe.
A really
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