Please list some of the LCD based oscilloscopes that can equal that of a CRT based scope, in waveform display quality. Remember, this is for the display of audio signals, not digital signals.
I used the Agilent DSO6054A. I believe the display technology has now rippled down to their cheaper models, though I have no first hand experience with those.
The digital Tek scopes of the same vintage were rubbish in comparison.
The digital Tek scopes of the same vintage were rubbish in comparison.
Take a look at these measurements to see how some measurements made with a quality digital oscilloscope may look like. It is a model that is already almost 10 years old. Are measurement made for an audio amplifier.
https://www.diyaudio.com/community/threads/sara-2016.295317/post-5147428
https://www.diyaudio.com/community/threads/sara-2016.295317/post-5147428
What scope is that?
It's better than most digital scopes. Can you buy that scope for about $150US?
It still has stair-stepping on the rising and falling edges and dithering on the more horizontal parts of the waveforms.
It's better than most digital scopes. Can you buy that scope for about $150US?
It still has stair-stepping on the rising and falling edges and dithering on the more horizontal parts of the waveforms.
"Can you buy that scope for about $150US?" No way. It was over 30kEuro about 10 years ago.
Now it is no longer manufactured, but equivalent models in terms of performance are somewhere around 10-15Keuro.
It is 12biti (real) resolution not mathematically made like many top osciloscope.
Equivalent model on market now are this: https://teledynelecroy.com/oscilloscope/hdo6000.aspx
At home I use a Siglent 2 channels and only 40Mhz.
Now it is no longer manufactured, but equivalent models in terms of performance are somewhere around 10-15Keuro.
It is 12biti (real) resolution not mathematically made like many top osciloscope.
Equivalent model on market now are this: https://teledynelecroy.com/oscilloscope/hdo6000.aspx
At home I use a Siglent 2 channels and only 40Mhz.
The Keysight scopes with InfiniiVision start at about USD$500. They have a much better display than shown in those pictures.
I don't think you know what you're talking about.
How can you say that a display with a resolution of 800x480 is better than a display with a resolution of 1280x800?
The fact that the display makes a kind of blur so that the pixelation is no longer visible does not make it better. And on the oscilloscope from which I put images (the images in the link were captured by me) you can activate a function that will make the image of the trace appear a little blurry and not see the pixels.
If you say that an 8-bit (12-bit mathematically) oscilloscope is better in resolution compared to one with a 12-bit ADC (15-bit mathematically)? 1Mpoints distributed memory comparing with minimum 64Mpoints per channel?
You say that an educational oscilloscope has a better image than a high-end professional oscilloscope.
This is proof that you have never worked with such an oscilloscope.
The only advantage with the oscilloscope you mentioned is the very low price.
How can you say that a display with a resolution of 800x480 is better than a display with a resolution of 1280x800?
The fact that the display makes a kind of blur so that the pixelation is no longer visible does not make it better. And on the oscilloscope from which I put images (the images in the link were captured by me) you can activate a function that will make the image of the trace appear a little blurry and not see the pixels.
If you say that an 8-bit (12-bit mathematically) oscilloscope is better in resolution compared to one with a 12-bit ADC (15-bit mathematically)? 1Mpoints distributed memory comparing with minimum 64Mpoints per channel?
You say that an educational oscilloscope has a better image than a high-end professional oscilloscope.
This is proof that you have never worked with such an oscilloscope.
The only advantage with the oscilloscope you mentioned is the very low price.
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The DSO6054A which I used for many years is no educational oscilloscope. I made it quite clear I've not used the newer and cheaper InfiniiVision scopes.
I search for a new scope @500$ and was only the educational scopes.
If you can find this scope (DSO6054A) @around 500$ than is ok and go for it. At this price is a very good osciloscope.
If you can find this scope (DSO6054A) @around 500$ than is ok and go for it. At this price is a very good osciloscope.
The OP was searching for a scope to fix car amplifiers, I didn't realise you were looking for one too. The 6054A is way overkill to fix car amplifiers. The new low cost verions with the InfiniiVision screen are likely perfect for the OP.
I have an Extra TDS 460A I would sell for $400 USD. I do not know what it would cost to ship. Shipping from 73096.
I like the Keysight DSOX1102 that I picked up a few years back. My TEK2465B has been sitting on the shelf ever since I bought the Keysight. My TEK2215 has been sitting on the shelf ever since I picked that TEK2465B out of a surplus pile at work and repaired it. 🙂
Tom
Tom
The 2215 (or something similar) would be a great choice for the OP (or anyone repairing audio equipment). The 2400 series Tek scopes are good but have hybrid modules that fail and are difficult to find. There were people resolving the issues with (some of) the modules but I don't know if they're still doing this.
Universities often stock their labs with Rigol and Siglent brand scopes as both of these Companies offer true 3 year parts and labor warranties. Their products that are reliable, built to a good quality level, measure accurately and are generally free of bugs. Both Companies have true service departments that are very responsive to their customers (individuals, corporations and universities). I recommend both the 200 Mhz Rigol DS1202ZE and the Siglent SDS 1202X E models for home use.
You should contact both manufacturers and buy from an authorized reseller if you want the warranty and support coverage. Amazon and other buying sites have an array of sellers that carry "gray market" products that will not be covered by the US warranty. Hope this helps.
You should contact both manufacturers and buy from an authorized reseller if you want the warranty and support coverage. Amazon and other buying sites have an array of sellers that carry "gray market" products that will not be covered by the US warranty. Hope this helps.
Rigol in US lets you buy direct and I think it was free shipping. Watch for sales. I got my scope on sale and saved a few extra bucks.
Sorry to jump in late in a thread but what makes a HP 120B a good starter scope? At one point I was a fairly competent scope user (EE grad student) but that is very long ago. Since the 120B is even older than my time as a grad student I would have thought it was well and truly eclipsed by even the cheap digital ones now.