Rohde Schwarz R&S UPL Audio Analyzer Renovation

[Bjirre]

I was able to repair my faulty UPL Analyzer. The issue ended up being relay K240 that switches between the Low distortion Generator and the Internal one. After probing several test points I was able to find stable signals before this stage. A good method of finding if relays are your issue is to slightly tap them, if the issue is in the contacts you will see huge swings in the readings.

Relay type K240: V23026D1021B201 https://www.mouser.be/ProductDetail/655-V23026D1021XB

After replacing this relay, all readings were back and selftest passed immediately without issues.

Thanks to @astx for the relay suggestion, you were right!

Cheers,

Bart

 

[thebrunx]

Does the defective relay still make a click sound if you apply +5V on the first (its marked on the board behind) and opposite pin?
that's how I tried to troubleshoot mine.

 

[Bjirre]

@thebrunx oh yeah, everything clicked beautifully. A dead relay would be a very easy one to find instead of dirty contacts… 😉

 

[Mother of PEARL]

The manuals in the Google Drive download were a mess so I fixed all of them and upped to https://www.pearl-hifi.com/06_Lit_A...yzers/All_Manuals_UPL_UPV_Audio_Analyzers.zip

 

[1audio]

The Pearl-hifi audio site is not accessable. Tride several ways. Has not been for a few days. Is there a problem?

 

[Mother of PEARL]

I don't know, I can get to it just fine from here in Canada, how long have you noticed it being down ?
Yesterday, June 27th, I reset my name server from Cloudflare.com back to Name.com in order to do an e-mail upgrade Name.com said was required due to their changing to a different e-mail service provider but from here I was only down for a couple of hours while the change propagated.

 

[1audio]

Its still not accessable through Comcast or T-mobile. DNS can't find it. Here is the error message from both DNS_PROBE_FINISHED_NXDOMAIN

 

[Mother of PEARL]

I think I'm good now. https://www.whatsmydns.net reports that I'm live in most places and I expect the rest will follow once things have had time to propagate.

 

[Bjirre]

The manuals in the Google Drive download were a mess so I fixed all of them and upped to https://www.pearl-hifi.com/06_Lit_A...yzers/All_Manuals_UPL_UPV_Audio_Analyzers.zip

Thanks for your suggestion, I have also cleaned up and organized the folders and documentation on my end. If anyone has a suggestion to make it more clear, always interested!

Google Drive - UPL Analyzer

Cheers Bart

 

[thebrunx]

Hello, if anyone can help, I'm trying to get my new GOTEK USB floppy disk emulator to work, I simply replaced the original floppy drive with the emulator, copied the files to an empty usb stick and plugged it in the emulator and entered A: then I got the message "Not ready reading drive A, Abort, Retry, Fail?", what am I doing wrong? and does anyone mind providing instructions on how to make it work from start to finish?

I have MAC btw.

thanks

 

[thebrunx]

Solved, I just needed to partition my stick

 

[wyqgyn]

Hello everyone. May I ask if I can access the self checking program? What DOS commands are needed?

 

[wyqgyn]

I can replicate the system using a 2G IDE solid-state drive. But if I want to test whether the self check signal is normal, my machine often experiences OVERLORD! The yellow indicator light is illuminated. So I would like to ask everyone how to call the SELFTEST command! You can view the fault location.

 

[Alex_twn]

Hello, you need to select and execute the file selftest.bas if i remember well.

 

[wyqgyn]

Thank you. My basic level is very low. After the system is turned on, press F3 to enter the basic program. Please help me write what code I need to run the SELFTEST program.

Thank you.

cheers

 

[Alex_twn]

Actually there is no need to write any code. You just need to execute the selftest.bas from the file menu if I remember well. I am not at home this week so cannot check but this weekend I will if you still did not find it.

 

[wyqgyn]

Thank you. My best friend. Please help me with your free time, SELFTEST command. Thank you again.

cheers

 

[wyqgyn]

I drew a PCB. Already produced. Waiting for testing. I plan to use the ATOM N270 ETX motherboard. I don't know if it can work properly.

 

[wyqgyn]

Dear friend, I am already proficient in using SELFTEST. Thank you. First, LOAD it once and then RUN it. Thank you all again. Thank you, Alex_ Twn. My motherboard has also been tested and can run smoothly on UPL.

cheers

 

[Bjirre]

I drew a PCB. Already produced. Waiting for testing. I plan to use the ATOM N270 ETX motherboard. I don't know if it can work properly.

Wow! Nice work! Can you share more details about it? Any other help you need for the selftest or other things?

Cheers,

Bart