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4hv.org :: Forums :: General Science and Electronics
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Is this a good scope?

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IamSmooth
Wed Mar 03 2010, 02:01AM Print
IamSmooth Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
I need to update my Tektronix 2465 analog scope.

Is the digitial TDS420A (tektronix) 4 channel scope a good one?
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Wed Mar 03 2010, 02:24AM
Registered Member #2372 Joined:
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Posts: 62
I personally couldnt imagine getting a scope without a usb port on it so you can save the data and put it on a computer. Some of the older scopes did allows for a serial cable out to a computer and could use a program called wavestar or something like that, but it was really slow. I would take being able to pull data off of it over more channels any day of the week.
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rp181
Wed Mar 03 2010, 03:55AM
rp181 Registered Member #1062 Joined: Tue Oct 16 2007, 02:01AM
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Posts: 1529
Depends, what price can you get it for?
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IamSmooth
Wed Mar 03 2010, 04:02AM
IamSmooth Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
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Posts: 1567
can this scope store a triggered image?

If I do a step response, can I capture the first few microseconds?
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Barry
Wed Mar 03 2010, 05:19AM
Barry Registered Member #90 Joined: Thu Feb 09 2006, 02:44PM
Location: Seattle, Washington
Posts: 301
IamSmooth wrote ...

can this scope store a triggered image?
If I do a step response, can I capture the first few microseconds?
Yes and yes.
Actually, you can capture the signal before the trigger, too. This is done automatically by continually recording the signal in a buffer and then saving data before the trigger. Very handy.
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radiotech
Wed Mar 03 2010, 06:33AM
radiotech Registered Member #2463 Joined: Wed Nov 11 2009, 03:49AM
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Posts: 1546
Scopes used to that by using a delay line and a fast phosphor like P7.
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Z28Fistergod
Thu Mar 04 2010, 11:24PM
Z28Fistergod Registered Member #2040 Joined: Fri Mar 20 2009, 10:13PM
Location: Fairfax VA
Posts: 180
The Rigols seem to be pretty good scopes. Plenty of features for most projects and cheap enough to buy new. I've had such bad luck with used scopes that I just took the plunge and bought one of the Rigols. It's definately worth the money in my opinion.
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IamSmooth
Fri Mar 05 2010, 02:25PM
IamSmooth Registered Member #190 Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
Z28Fistergod wrote ...

The Rigols seem to be pretty good scopes. Plenty of features for most projects and cheap enough to buy new. I've had such bad luck with used scopes that I just took the plunge and bought one of the Rigols. It's definately worth the money in my opinion.

I was looking at this...
Link2

If I just use one channel, can you expand it to the whol screen? How reliable is yours?
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teravolt
Fri Mar 05 2010, 07:04PM
teravolt Registered Member #195 Joined: Fri Feb 17 2006, 08:27PM
Location: Berkeley, ca.
Posts: 1111
that look like a great scope for 1600$ you should be able to switch on how ever many channels you want up to 4. the data sheet is hear
Link2
that scope has all of the fetures that my tekronix 3034b has including FFT for specrtum mesuring and advanced triggering.
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Z28Fistergod
Fri Mar 05 2010, 07:27PM
Z28Fistergod Registered Member #2040 Joined: Fri Mar 20 2009, 10:13PM
Location: Fairfax VA
Posts: 180
I have the 2 Channel version of that scope. Yes, you can adjust the scale to whatever you like. I was looking at the 4 channel version but when I bought mine it was > 2x the price. That didn't make a whole lot of sense to me so I just went with the 2 channel. Like teravolt said, it has plenty of features. I've haven't needed it to do anything it couldn't yet. It comes with a 1 year warranty if you do have any trouble. All together I'm happy with it.

I bought mine from tequipment.net. They have a 10% educational discount if you're in school, so I ended up getting mine for about $650. Link2
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