Products > Test Equipment

Upgrading Mainboard in Lecroy DDA-3000 (aka WavePro 7300a?)

<< < (135/155) > >>

sixtimesseven:
Slightly of topic but:

Could a WaveMaster 8500A owner take a good, head on photo of the label on the front panel. The "WAVEMASTER 8500A 5GHz 20GS/s" one on the front?

My DDA's label is messed up and I thought I change it to Wavemaster to reflect the software changes.
I can straighten slanted photos but on the web I only found low res Photos of the 8500 front panel which are of no use.


Edit: Attached sample pic.

albertr:

--- Quote from: Converter on May 02, 2019, 06:36:06 pm ---Overwriting the EEPROM in the input module does not significantly affect the bandwidth of the oscilloscope. But I found elements in the circuit, which change WP7200 to WP7300. Each WP7200 or WP7100 can be changed to WP7300. It turned out to be easier than I thought.

--- End quote ---

Nice! So front ends are identical besides a few passive components? Can you share the details on how to mod 7100 into 7300?
Does it affect calibration?

-albertr

BeckGyver:
Just got my DDA-5005 from E-Bay and shipped from Thailand. It was listed as untested and was running on the pictures taken for the offer. One price offer later I was proud owner of a DDA-5005A XL.

I did my homework in advance and found this awsome forum with tons of info and tools to get this units working again even if they are broken.
Just a short shoutout to this community: Thanks to everyone contributing to this topic and sharing their knowledge, experience and work. All this helped me with my first babysteps getting this unit disassembled and basically tested.

And this is where my journey starts:

I got the unit well packet with no damages on the outside beside on of the feet on the back. The Unit seems to come from Maxtor (last calibration 2013). The Unit was built in 2004.
The first external inspection shows no wear on the front connectors and no other damages from a longer storage. My mood was getting better and better.
Next should be the first Power-Cycle. This unit boots nicely and the HDD had no click of death so far.
X-Stream starts nicely too and this where I am not sure what I see:
All four channels semm to work and if I switch to 50R termination I get a signal on all four channel  :o
Channel one Sine, channel two sqaure, channel three rectangular and channel four puls. Alls signals overlay and have a base frequqnecy of about 3 MHz. Is this some Kind of reference/calibration signal ?
As my LPA-SMA adapter are on their way and will arrive later this week, i can not give any signal externally to the channels.

After opening the unit I inspected the mainboard and internal fans:
- Mainboard has some blown caps
- not a lot of dust inside --> nice
- after removing fan of cpu cooler ther was some dust so maybe it was cleaned one time.
- two screws are missing inside from the mounting plate of the two big fans in the front of the unit. Somebody was in here before.
Maybe from calibration ? :-// Maybe they have been replaced.
- PSU does not make funny noises so far (will be checked and Caps replaced)
- HDD has both partitions and it seems that all info is present on second partition

Maybe you guys can help me on my way pimping this unit and getting it back to old glory. First step would be understanding this signals displayed.
I hat a peek inside the Service Menu and hat a look in the communication errors to the subsystems and there were no errors. First thing in my mind would be that his is good news.
What should be the first test to find out what is going on or should I first go for hardware upgrade (Mainboard and HDD) ?
I will take some photos of the unit and upload it when I work on it next time. Let me know what to take pictures of.

Here is what I want to do on the unit:
- Upgrade Mainboard / CPU with one that has at least SATA (Not sure if i want to go for Mainboard without AGP and new display or "old" graphics-card)
- Upgrade to Win XP or later (not sure so far what will be the hurdels)
- Upgrade of X-Stream
- maybe try to get licences running
- Fan replacement of the old turbines

What I have in my lab:
- Spectrum analyzer up to 3.5 GHz
- Oscilloscove 500 MHz WaveJet
- Signal generator
- Counter
- usual stuff (multimeter, cables, adapters ....)

analogRF:
If I am not mistaken, these scopes have a demo mode that shows signals on 4 channels. I haven't tried it myself before but I think it is in there
there should be something in the menus. OR maybe it is showing some reference signals that had been stored before.
Just put the scope in its factory default state

Isn't it already running windows XP? What is the motherboard model?

If you want to keep the changes to minimum (as I preferred) and keep the AGP and do just a moderate upgrade
unfortunately the options are very limited for motherboard. The only think I could find was Asus P5PE-VM
like this guy http://s-audio.systems/blog/lecroy-upgrade/

if someone can point to a better option for mobo (to keep the AGP slot and 2 PCI slots) please do

BeckGyver:
I searched for the "Demo Mode" but could not locate. There are some Scope-Settings and I reset to those but had the same waveforms.
I assume these demo waveforms are stored data and not a generated waveform fed to the inputs. Therefore not a real test of the frontend.

The Mainboard installed is a Intel D845GERG2 - I have attatched some pictures.
I have an Asus P4P800-VM with 4gb and P4 3.2GHz HT available and would like to throw it in together with a ssd and go for a full re-install on Win XP. But befor I go this route, Prio1 for me now is to find what is wrong with it (and it seems so from my feeling now).

Unfortunately it has been Win2k on production.
I am not afraid of going deeper into the scope and change it to other mainboards and change screens as well, but would like to go step by step to not enter the rabbit hole with light speed.

I have access to all the files in driv D: and will go for a DD and recover to se what was in there befor it was dumped. I can also get the logs from service menu, please let me know which is the right to look for.

Navigation

[0] Message Index

[#] Next page

[*] Previous page

There was an error while thanking
Thanking...
Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod