Pc Oscilloscope

red · 7th August 2003, 10:52 AM

I know you have already disscused the topic but I have a question.Are they any good this kind of osciloscopes?And do u happen to know any schematic that is easy to build ?
I've searched the net but i didn't find any I could use,because I want to build it my self.Please forgive my ruddness but I hope someone will answer me.

ALW · 7th August 2003, 11:08 AM

The Pico instruments are pretty good (www.picotech.com) and have additional functionality like data-logging and FFT.

The problem is often that a PC is less than ideal (unless you have a laptop / portable) and a real 'scope is much better for moving to the circuit, rather than moving the circuit to the PC.

The other issue is you have to be very aware of the limitations of digital scopes in terms of Nyquist etc. if they are not to mislead and show things that aren't really there.

A used 'scope is likely to be very useful for years to come, even a basic 10-20MHz 'scope will tell you all you need to know for most analogue work.

I use a 20MHz real 'scope, and a PC-based FFT analyser - a relatively cheap soundcard can get you 24bit / 96k resolution for little outlay.

Andy.

Michael Rothacher · 7th August 2003, 12:27 PM

If you really want to build one yourself from scratch try a search for bitscope.

If you want to try a kit try Velleman.

fmak · 8th August 2003, 10:41 PM

Quote:

Originally posted by red
I know you have already disscused the topic but I have a question.Are they any good this kind of osciloscopes?And do u happen to know any schematic that is easy to build ?
I've searched the net but i didn't find any I could use,because I want to build it my self.Please forgive my ruddness but I hope someone will answer me.

---------------------------------------------------
For the amount of money asked for 16 bit pc scopes, you will do far better getting a used 100 MHz CRT with delay function, say for $500 or less. This way, your traces are much more noise free. By all means then buy a software spectrum analyser for $300 with a good 24/96 soundcard with low thd+n.

red · 10th August 2003, 12:05 PM

Thank you guys.I guess I find one to buy since u told me the unpleasent aspects of this job.

JOE DIRT® · 10th August 2003, 03:19 PM

red I posted a free pc based scope and frequency counter programs on another thread

DIRT®

MantramAudio · 13th August 2003, 04:18 AM

Quote:

Originally posted by JOE DIRT®
red I posted a free pc based scope and frequency counter programs on another thread

DIRT®

Dirt, I searched the entire forum and cannot find this post. Could you elaborate?

Nik

Henckel · 13th August 2003, 11:52 AM

Hello

the following link should help you

http://www.dazyweblabs.com/shannonsoft/page3.html

Morten

fmak · 13th August 2003, 02:42 PM

[QUOTE]Originally posted by Henckel
[B]Hello

the following link should help you

http://www.dazyweblabs.com/shannonsoft/page3.html

--------------------------------------------------------
The SA3000 spectrum analyser doen't work, just produces blank spectrum analyser screen with no buttons!! Does anyone know why?

JOE DIRT® · 13th August 2003, 03:02 PM

here it is>>>>>>>>>

7th August 2003, 10:52 AM	#1
red diyAudio Member Join Date: Feb 2003 Location: Bucharest	Pc Oscilloscope I know you have already disscused the topic but I have a question.Are they any good this kind of osciloscopes?And do u happen to know any schematic that is easy to build ? I've searched the net but i didn't find any I could use,because I want to build it my self.Please forgive my ruddness but I hope someone will answer me.

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7th August 2003, 11:08 AM	#2
ALW diyAudio Member Join Date: Jun 2001 Location: UK	The Pico instruments are pretty good (www.picotech.com) and have additional functionality like data-logging and FFT. The problem is often that a PC is less than ideal (unless you have a laptop / portable) and a real 'scope is much better for moving to the circuit, rather than moving the circuit to the PC. The other issue is you have to be very aware of the limitations of digital scopes in terms of Nyquist etc. if they are not to mislead and show things that aren't really there. A used 'scope is likely to be very useful for years to come, even a basic 10-20MHz 'scope will tell you all you need to know for most analogue work. I use a 20MHz real 'scope, and a PC-based FFT analyser - a relatively cheap soundcard can get you 24bit / 96k resolution for little outlay. Andy.

7th August 2003, 12:27 PM	#3
Michael Rothacher www.audiohobby.com diyAudio Member Join Date: May 2001 Blog Entries: 3	If you really want to build one yourself from scratch try a search for bitscope. If you want to try a kit try Velleman.

10th August 2003, 12:05 PM	#5
red diyAudio Member Join Date: Feb 2003 Location: Bucharest	Thank you guys.I guess I find one to buy since u told me the unpleasent aspects of this job.

10th August 2003, 03:19 PM	#6
JOE DIRT® diyAudio Member Join Date: Apr 2003 Location: Brantford, ON	red I posted a free pc based scope and frequency counter programs on another thread DIRT®

13th August 2003, 11:52 AM	#8
Henckel diyAudio Member Join Date: Sep 2002 Location: Copenhagen, Denmark	Hello the following link should help you http://www.dazyweblabs.com/shannonsoft/page3.html Morten

13th August 2003, 02:42 PM	#9
fmak diyAudio Member Join Date: May 2001 Location: London UK	[QUOTE]Originally posted by Henckel [B]Hello the following link should help you http://www.dazyweblabs.com/shannonsoft/page3.html -------------------------------------------------------- The SA3000 spectrum analyser doen't work, just produces blank spectrum analyser screen with no buttons!! Does anyone know why?

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