I am looking to buy an oscilloscope. I don't have any experience with them.
What do you guys think of the Tektronix TDS714L digital scope or other Tek digital scope for stereo equipment application?
How do the analog scopes like Tek 2246 or 2465 compare to the Tek TDS714L for stereo equipment application?
What do you guys think of the Tektronix TDS714L digital scope or other Tek digital scope for stereo equipment application?
How do the analog scopes like Tek 2246 or 2465 compare to the Tek TDS714L for stereo equipment application?
All I can say is that for tube audio, you don't really _need_ to shell out $3k on a scope. I'd settle for a simple dual beam analog 'scope.
As above.
Look for a minimum of 20 to 30mhz bandwidth, dual channel, and choose a model that has a high accelerating voltage for the CRT (10 kv or above to give a bright sharp trace).
Look for a minimum of 20 to 30mhz bandwidth, dual channel, and choose a model that has a high accelerating voltage for the CRT (10 kv or above to give a bright sharp trace).
Are there anything that the Tek digital scope like TDS714L can't do but the analog scope can?
I agree the TEK TDS714L is over kill for audio but I think it would be useful for other things as well.
I agree the TEK TDS714L is over kill for audio but I think it would be useful for other things as well.
I paid $125 for a dual channel 100Mhz analog Tek scope on eBay. It's overkill for audio but I'm into radio as well. There is some advantage to analog scopes.
I also have a good studio quality audio interface in my iMac and software that can do some analysis on the sound, like FFT and harmonic distortion.
I've worked in electronics for 40+ years and have used most of the Tek scope models at one time or another. For audio signals I would look for one of the older digital models that work dual mode. That is they work as an analog scope most of the time but have digital storage mode. With a straight digital scope it is very easy to miss some of the fast rise time events that can occur faster that the sampling time of the sweep rate you are using. Thats not to say I don't use digital scopes, I do. It's just that you need to look at the signal at several different sweep rates to make sure your not missing things. Some of the other features like FFT and wave form capture can be very usefull. If you want these other features then go for it. If you want a simple trouble shooting tool then go for the analog scope.
😉
BZ
The shots here were taken with my analogue scope,
http://www.diyaudio.com/forums/chip...g-audio-integrated-opamps-51.html#post2012422
My thoughts are as per BZed's above. Scope I use is shown in post #1026
It's a bit like comparing a digital camera and film. The digital one won't show the finest detail when you zoom in, the analogue lets you winkle out what's there limited only by the trace thickness and noise.
http://www.diyaudio.com/forums/chip...g-audio-integrated-opamps-51.html#post2012422
My thoughts are as per BZed's above. Scope I use is shown in post #1026
It's a bit like comparing a digital camera and film. The digital one won't show the finest detail when you zoom in, the analogue lets you winkle out what's there limited only by the trace thickness and noise.
I absolutely love my TEK 2465B. 4 channels, 500 MHz. I picked it out of a scrap heap for free and replaced $25 worth of caps in it. Best $25 I've ever spent. The 2465 is an analog scope with some digital functions (cursors and readout). Some of them have a digital storage option.
~Tom
~Tom
I am actually thinking of getting a 2465/A/B.
Do you think it is worth it to get a 2465B or the other versions would be just as good?
Do you think it is worth it to get a 2465B or the other versions would be just as good?
i've got a 2465.
I like it.. don't need anything over 250 mhz anyway.
unfortunately the horizontal amp is a ticking time bomb. (both 65, a and b afaik)
mine died, but it works if keep cold so its got a dedicated peltier chip to keep it cold.
I like it.. don't need anything over 250 mhz anyway.
unfortunately the horizontal amp is a ticking time bomb. (both 65, a and b afaik)
mine died, but it works if keep cold so its got a dedicated peltier chip to keep it cold.
I have a 2246 - love it completely. I would sleep with it if the wife wouldn't get jealous. Paid only a few hundred for it from eBay, but it was NIB-NOS.
Also have a TDS-something at 100MHz and FFT. Very handy also. Paid a lot for that one.
Agreed that analog is suitable as the first purchase for audio, but the second purchase of a digital later on will not be a waste of money.
Also have a TDS-something at 100MHz and FFT. Very handy also. Paid a lot for that one.
Agreed that analog is suitable as the first purchase for audio, but the second purchase of a digital later on will not be a waste of money.
As I recall the main difference is that the A has 350 MHz bandwidth, the B 500 MHz. The straight 2465 (no A or B) has 300 MHz bandwidth. No big difference in real life -- especially not for audio.
This outlines a few more differences:
What are the differences between the Oscilloscope models 2465, 2465A, and 2465B? > Frequently Asked Questions : Tektronix
~Tom
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