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HP AGILENT 54835A missing OS and software.
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StrayElectrons:
Was thinking about getting this but wondered about where to get the software that runs this oscilloscope. OS is not the problem.
I see quite number of these scopes of 1GHz and 500MHz models missing these software and price is all over. This 54835A costs 900 plus shipping and missing the software.
This scope contains socket 7 motherboard using AMD K6-2 processor. One should know, I'm actually into vintage computing for vintage gaming, yes, I know what it is and can deal with this this old hardware.
Second, is any flaws rendering I should know about?
Cheers,
DB4UCH:
You used to be able to download the recovery images directly from Agilent / Keysight via FTP, but they took it down a few years ago. There is a mirror of this FTP server on the internet archive. (https://archive.org/download/ftp.keysight.com/) You don't need to download the whole tar; you can browse individual files directly. I attached a guide from Agilent regarding the general recovery procedures for this family of scopes.
Generally, the reason for the missing software is a dead (or, of course, missing) HDD (2.5" ide) or a dead CMOS Battery / a dead Dallas Time-Bomb in older versions, keeping the system from booting. So, replacing the HDD with a CF card is the way to go in most cases (4GB is plenty).
There are different motherboard variants in this scope, an older green one (using the Dallas RTC chip) and a newer brown one. Those aren't directly compatible driver wise, so not every recovery image works with every board. The scope part should be the same, though. (+ some older versions only had 16MB of RAM, later ones had 64MB)
There is already a big thread about this series of scopes on this forum containing a lot of information. (https://www.eevblog.com/forum/testgear/agilent-54835a-scope-(4-channel-1ghz-4gss)-repair-uphack/)
The scope part can, sadly, only be checked if the Windows environment is fully up and running, so it's a gamble if you get a fully working unit. (If it then passes self-test and the self-calibration routines, it's generally fine) Repairing can be hard as well, because those acquisition ASICs are pretty much unobtanium.
Greetings,
Simon
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