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nctnico:

--- Quote from: lukier on September 21, 2019, 09:11:09 pm ---
--- Quote from: nctnico on September 21, 2019, 01:02:33 pm ---Sorry but I wouldn't pay $70 for that. Does anyone have a 3D model for the bezel? I can ask the company I outsource 3D design & printing to if they can print it in one piece and see how much it will cost.

--- End quote ---

Courtesy of Mechatrommer:
https://www.eevblog.com/forum/testgear/upgrading-mainboard-in-lecroy-dda-3000-(aka-wavepro-7300a)/msg2060719/#msg2060719

I also wouldn't pay $70, that's why I printed it myself with PLA, but had to do in 6 parts, so then gluing, putty, sanding, painting, mess etc. I thought about "outsourcing" it as you say, it would be nice to have it SLS printed in one piece, but these outsource 3D printing shops charge min 40 GBP and probably much more for such big model and that's probably not even SLS, just FDM for that price.

--- End quote ---
Thanks for linking to the 3D models. I just mailed the model to my '3D printing guy'. See what he comes up with...

nctnico:
Well the 7200A has arrived!
There is output on the VGA port at the rear but during boot it gives a blue screen and then resets. I'm going to try a fresh install on an SSD first.

lukier:

--- Quote from: nctnico on September 24, 2019, 04:04:22 pm ---Well the 7200A has arrived!
There is output on the VGA port at the rear but during boot it gives a blue screen and then resets. I'm going to try a fresh install on an SSD first.

--- End quote ---

Remember to preserve D:\Calibration directory from the original HDD!

nctnico:

--- Quote from: lukier on September 24, 2019, 06:26:02 pm ---
--- Quote from: nctnico on September 24, 2019, 04:04:22 pm ---Well the 7200A has arrived!
There is output on the VGA port at the rear but during boot it gives a blue screen and then resets. I'm going to try a fresh install on an SSD first.

--- End quote ---

Remember to preserve D:\Calibration directory from the original HDD!

--- End quote ---
That is going to be a problem... Meanwhile I managed to re-install Windows XP on an SSD and start the oscilloscope software but I have found some issues:

1a) The factory calibration data is missing. It seems there is an extra partition on the original drive but Windows XP says it is not formatted; I guess the calibration data is stored here. I have not made any attempts to restore the partition.
1b) I ran the self calibration routine. Is this enough to have some basic calibration or are the factory calibrations mandatory?
2) The oscilloscope keeps clicking relays and the waveform update is really slow. A new trace every few seconds.
3) Channel 2 seems to have a problem with the attenuation. Channels 1, 3 and 4 seem consistent
4) The traces appear to be very noisy (full bandwidth) coupled 1MOhm from the aux output (1kHz 1V)
5) I tried to run the self tests from the service menu but it says failed immediately without a message

lukier:

--- Quote from: nctnico on September 24, 2019, 08:49:51 pm ---1a) The factory calibration data is missing. It seems there is an extra partition on the original drive but Windows XP says it is not formatted; I guess the calibration data is stored here. I have not made any attempts to restore the partition.

--- End quote ---

Try some file/partition recovery with your favourite tool of choice. The directory is normally hidden.


--- Quote from: nctnico on September 24, 2019, 08:49:51 pm ---1b) I ran the self calibration routine. Is this enough to have some basic calibration or are the factory calibrations mandatory?

--- End quote ---

Yes and no. In theory there is, on some scopes, a backup of these files in some EEPROM memory on the acquisition board. See more in this great thread:
https://www.eevblog.com/forum/testgear/lecroy-x-stream-calibration-data-and-storage/


--- Quote from: nctnico on September 24, 2019, 08:49:51 pm ---2) The oscilloscope keeps clicking relays and the waveform update is really slow. A new trace every few seconds.
3) Channel 2 seems to have a problem with the attenuation. Channels 1, 3 and 4 seem consistent
4) The traces appear to be very noisy (full bandwidth) coupled 1MOhm from the aux output (1kHz 1V)

--- End quote ---

Without calibration files all bets are off - I had for example bad trigger threshold levels on one of my scopes when I forgot about Calibration.

In the service menu open the log viewer and inspect all the types of logs for errors, maybe some clue will be there. Maybe it is both messed up calibration and real HW faults.


--- Quote from: nctnico on September 24, 2019, 08:49:51 pm ---5) I tried to run the self tests from the service menu but it says failed immediately without a message

--- End quote ---

I'm not aware of any tests in the service menu apart from FP tests - be very careful there anyway. AFAIR all self tests happen at app startup.

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