Products > Test Equipment
Infinium 54820A running very slow
(1/2) > >>
macgeorge:
Hello all!
I have an Agilent Infinium 54820A oscilloscope in my lab, which is currently running very slow, so I would appreciate any suggestions, since I believe it' s a pretty good machine (500MHz 2GS/s) and don't have currently the budget to buy a new one.
There has been a message in the past that "fine interpolator has failed" and the oscilloscope would stop the acquisition. After a restart or two, it would operate again normally. I overrode this problem by disabling the sinx/x interpolation and afterwards entirely disabling the interpolation (by setting the screen to display only dots).
However during the following years the oscilloscope started to operate very slowly, for example when I change the time scale, it needs 5 seconds to display the new time scale etc. All of the functions, or even the Windows menus, the graphics etc also have a very large display delay. Agilent provided me with a new version of OS (Windows 98 whereas the original had Windows 95). During the restore, the hard disk check showed that it had bad blocks so I changed the hard disk. However, the problem was not fixed.
So, do you have any suggestions of what should I try?
Thank you in advance!
George
amyk:
CPU overheating and going into thermal throttling? Check heatsink/fan/thermal compound...
free_electron:
The interpolator failure is most likely the problem.

Pop the cover off and take two pictures , one from the top , one from the bottom. I may be able to help.
I need to know the VIN (label on the back)
I need to know if it has the intel or the via motherboard ( intel has the big linear regulator on a heatsink)

Then i need to know if the scope board uses the ceramic chip or the hybrid module for interpolator.
If its the ceramic : it may be dead because of heat.

I have the hybrid.
macgeorge:
Thank you guys for your immediate answers.
So, the oscilloscope is the first version 54820A with no VIN # (the one with the mechanical floppy disk eject button).
I am attaching two pictures. If it's not very clear please tell me what more info you would like. I can see an ez1083 regulator with a big heatsink
(bottom right).
Since I opened it, I changed the thermal compound, just to be sure. Based on the jumpers, it's already clocked to the maximum 200MHz frequency.
free_electron:
Ok i know what machine you have. It is the intel motherboard.
And the scope board is using the old ceramic chips. These sometimes fail. The newer machines use a hybrid module with a tqfp bolted onto a pin grid array.

Let the machine warm up for half an hour. Go to the help menu and runthe selftests. See what happens ( if there are no errors)

Post any errors here. That way i can tell you which of the two chips is bad.
Itseither the chip with the two labels on ot or the one with the label in the center.
Navigation
Message Index
Next page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod