Pundit
Post by papahemi on Apr 3, 2023 17:04:53 GMT 12
Do I need an oscilloscope - I think so. Having retired I determined to get rid of my excess audio stuff - trouble is most of it is in need of some attention - eg 2 x Kenwood KD600 neither of which function properly on both speeds. I have the service manual which goes through the adjustments - with an oscilloscope. Now I don't know how to use an oscilloscope, but I am keen to learn. Ideal for retirement: learning and fixing up stuff, thing is I wouldn't have an idea where to start. Must do some Youtube tutorials, but any advice from the wise minds on DL would be appreciated.
We are what we pretend to be, so we must be careful about what we pretend to be.
|
Pundit
Post by stuzzo on Apr 3, 2023 18:57:29 GMT 12
This guy youtube.com/@menditmark I referred to in the other thread is phenomenal. Trained from apprenticeship you see all the test equipment and think it must be just a collection but it is all functional in his work. Having said that it’s amazing what you can test with a $50 Jaycar meter with diode/capacitance functions etc You can buy cheap scopes that plug into a computer usb, Poscope was one, not sure if they are still around.
|
Pundit
Post by papahemi on Apr 4, 2023 7:46:50 GMT 12
Thanks - It was mend it Mark that prompted the thought so thanks again for the prompt. Researching PC based scopes that work on Mac now.
We are what we pretend to be, so we must be careful about what we pretend to be.
|
Pundit
Post by stuzzo on Apr 4, 2023 7:57:22 GMT 12
Thanks - It was mend it Mark that prompted the thought so thanks again for the prompt. Researching PC based scopes that work on Mac now. I think the one I’ve got is max 20v, probably suitable for logic level stuff. I guess you’d want one that was safe looking at the output of an amplifier.
|
Pundit
Post by papahemi on Apr 4, 2023 11:03:55 GMT 12
Thanks - It was mend it Mark that prompted the thought so thanks again for the prompt. Researching PC based scopes that work on Mac now. I think the one I’ve got is max 20v, probably suitable for logic level stuff. I guess you’d want one that was safe looking at the output of an amplifier. Yes - and this is where it gets confusing as I don't really know what I am looking for. Must do some research...
We are what we pretend to be, so we must be careful about what we pretend to be.
|
Pundit
Post by peter0c on Apr 4, 2023 13:34:33 GMT 12
Yes you do need one because it will show phase as well as upper and lower values and dual trace so you can compare inputs with outputs.
|
Post by colinf on Apr 5, 2023 6:40:28 GMT 12
For PC scopes, I like PicoScopes. For a first DSO (digital storage oscilloscope) check out the 2204A. 10MHz bandwidth is plenty if you’re aiming for repairs and less R&D. There’s the debate between analogue scopes and digital storage ones. Analogue ones were first and date back to when oscilloscopes were first invented. They have good resolution and can be cheap, if bulky if it has a cathode ray tube. Some older ones can be highly specified and can show RF problems more clearly than an equivalent cost DSO. Digital storage oscilloscopes have the advantage of being capable of displaying very low frequencies clearly, as the display of the waveform persists on the screen. An analogue scope can’t do this. You can even save the waveform as a photo if you like. The advantage of a PC scope is that it uses the computing power of your computer and has a larger display - the computer’s, and isn’t a bulky bit of kit to store. The PicoScope also has a spectrum analyser as standard, and a signal generator (AWG, arbitrary waveform generator). But what is it…? An oscilloscope displays voltage (X axis) as a function of time (Y axis). To measure more than 20V (the limit of the 2204A) use a 10:1 or 100:1 probe for 200V or 2000V (depends on the rating of the probe) respectively. You can set the probe type you’re using on the menu.
AMR-iFi R&D
|
Pundit
Post by papahemi on Apr 5, 2023 10:54:15 GMT 12
For PC scopes, I like PicoScopes. For a first DSO (digital storage oscilloscope) check out the 2204A. 10MHz bandwidth is plenty if you’re aiming for repairs and less R&D. There’s the debate between analogue scopes and digital storage ones. Analogue ones were first and date back to when oscilloscopes were first invented. They have good resolution and can be cheap, if bulky if it has a cathode ray tube. Some older ones can be highly specified and can show RF problems more clearly than an equivalent cost DSO. Digital storage oscilloscopes have the advantage of being capable of displaying very low frequencies clearly, as the display of the waveform persists on the screen. An analogue scope can’t do this. You can even save the waveform as a photo if you like. The advantage of a PC scope is that it uses the computing power of your computer and has a larger display - the computer’s, and isn’t a bulky bit of kit to store. The PicoScope also has a spectrum analyser as standard, and a signal generator (AWG, arbitrary waveform generator). But what is it…? An oscilloscope displays voltage (X axis) as a function of time (Y axis). To measure more than 20V (the limit of the 2204A) use a 10:1 or 100:1 probe for 200V or 2000V (depends on the rating of the probe) respectively. You can set the probe type you’re using on the menu. Picoscope 2204 is almost affordable but I am unsure as to whether or not it will function on a Mac.
We are what we pretend to be, so we must be careful about what we pretend to be.
|
Post by colinf on Apr 5, 2023 19:06:31 GMT 12
Works on Mac. The software can be downloaded and used in demo mode to check it out first if you like.
AMR-iFi R&D
|
Post by RdM on Apr 5, 2023 20:00:04 GMT 12
Do I need an oscilloscope - I think so. Having retired I determined to get rid of my excess audio stuff - trouble is most of it is in need of some attention - eg 2 x Kenwood KD600 neither of which function properly on both speeds. I have the service manual which goes through the adjustments - with an oscilloscope. Now I don't know how to use an oscilloscope, but I am keen to learn. Ideal for retirement: learning and fixing up stuff, thing is I wouldn't have an idea where to start. Must do some Youtube tutorials, but any advice from the wise minds on DL would be appreciated.
There are a few oscilloscope books here;- take your pick! ;=})
[Hmm his Jump to link doesn't work;- Just pick the Test & Measurement (equipment, instructions...) section from the page.]
|
Post by RdM on Apr 18, 2023 23:17:41 GMT 12
A friend has just brought his Kenwood KD-600 out of storage, SME arm, Stanton 881 cart that may or not need a new stylus.
Hopefully he doesn't have similar problems. Hasn't been played for several decades.
|
Pundit
Post by papahemi on Apr 19, 2023 16:37:16 GMT 12
A friend has just brought his Kenwood KD-600 out of storage, SME arm, Stanton 881 cart that may or not need a new stylus. Hopefully he doesn't have similar problems. Hasn't been played for several decades. A classic combo there - today on fB I noted the same setup coming out of storage and performing well. Same person perhaps. Presently procrastinating over selling some vinyl to fund a picoscope, I don't have an issue with this as such as I intend to cull my vinyl down to about 500 albums anyway (a thread for the future perhaps) - it is just a matter of being arsed enough to get it done.
We are what we pretend to be, so we must be careful about what we pretend to be.
|
Post by RdM on Apr 25, 2023 19:49:20 GMT 12
A friend has just brought his Kenwood KD-600 out of storage, SME arm, Stanton 881 cart that may or not need a new stylus. Hopefully he doesn't have similar problems. Hasn't been played for several decades. A classic combo there - today on fB I noted the same setup coming out of storage and performing well. Same person perhaps. Presently procrastinating over selling some vinyl to fund a picoscope, I don't have an issue with this as such as I intend to cull my vinyl down to about 500 albums anyway (a thread for the future perhaps) - it is just a matter of being arsed enough to get it done.
No, I don't think so - in Auckland? My friend has only a skeletal presence on FB. Coincidence perhaps?
As for 'scopes, there's an old school Digitech single channel 10MHz one on TM starting at $1 Might be good enough and go cheaply, even with the cost of postage?
And this 20MHz Dual Channel Hantek USB looks to have better specs than the Picoscope 2204, for $168. Or $162.95 directly from his shop: Windows software only supplied, but there's an open source project for it with Linux and macOs builds (mentioned too in a review at the above). (quite a long and detailed read) AC coupling: (The last 3 links are all from the main page above.)
Cheers!
|
Post by RdM on Apr 25, 2023 19:57:14 GMT 12
A friend has just brought his Kenwood KD-600 out of storage, SME arm, Stanton 881 cart that may or not need a new stylus. Hopefully he doesn't have similar problems. Hasn't been played for several decades. A classic combo there - today on fB I noted the same setup coming out of storage and performing well. Same person perhaps. Link to the FB page?
|
Pundit
Post by papahemi on Apr 26, 2023 17:09:25 GMT 12
A classic combo there - today on fB I noted the same setup coming out of storage and performing well. Same person perhaps. Presently procrastinating over selling some vinyl to fund a picoscope, I don't have an issue with this as such as I intend to cull my vinyl down to about 500 albums anyway (a thread for the future perhaps) - it is just a matter of being arsed enough to get it done.
No, I don't think so - in Auckland? My friend has only a skeletal presence on FB. Coincidence perhaps?
As for 'scopes, there's an old school Digitech single channel 10MHz one on TM starting at $1 Might be good enough and go cheaply, even with the cost of postage?
And this 20MHz Dual Channel Hantek USB looks to have better specs than the Picoscope 2204, for $168. Or $162.95 directly from his shop: Windows software only supplied, but there's an open source project for it with Linux and macOs builds (mentioned too in a review at the above). (quite a long and detailed read) AC coupling: (The last 3 links are all from the main page above.)
Cheers!
Thanks for this - will have a closer look soon, like I wrote earlier I first need to get off my arse and free up some funds. Can't find the FB link for the Kenwood any longer, nevermind.
We are what we pretend to be, so we must be careful about what we pretend to be.
|
