Products > Test Equipment
Keysight 3000T scope 1 GHz(or more) hardware upgrade mod
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Keysight DanielBogdanoff:

--- Quote from: TheSteve on August 18, 2022, 02:15:24 pm ---The 500 MHz mod for the T series should be roughly the same as the A series however I don't think anyone has ever actually done it to verify 100% the exact components that need to be changed.

--- End quote ---

I haven't seen it done either and agree that it would be roughly the same. There's not a lot of difference in signal paths between the A/T/G versions.
TheSteve:

--- Quote from: Keysight DanielBogdanoff on August 18, 2022, 03:50:59 pm ---
--- Quote from: TheSteve on August 18, 2022, 02:15:24 pm ---The 500 MHz mod for the T series should be roughly the same as the A series however I don't think anyone has ever actually done it to verify 100% the exact components that need to be changed.

--- End quote ---

I haven't seen it done either and agree that it would be roughly the same. There's not a lot of difference in signal paths between the A/T/G versions.

--- End quote ---

The 1.5 GHz mod is more fun, wouldn't you agree?  >:D >:D >:D >:D >:D
pquadrat:

--- Quote from: tv84 on August 18, 2022, 03:10:38 pm ---
--- Quote from: EEVblog on August 18, 2022, 02:15:06 am ---Agreed. I'm impressed that people are willing to hardware mod such an expensive high end scope.

--- End quote ---

After Steve lead the way, for others should be child's play (except me, of course... :) ).

--- End quote ---
I did the 500MHz mod on a 3104T. Working perfectly. Before calibration, the bandwith was about 750Mhz, which gets "corrected" in calibration.

I did not even know that it was for the A model. Everything seems to be identical.
maxwell3e10:

--- Quote from: TheSteve on August 18, 2022, 04:22:57 pm ---
--- Quote from: Keysight DanielBogdanoff on August 18, 2022, 03:50:59 pm ---
--- Quote from: TheSteve on August 18, 2022, 02:15:24 pm ---The 500 MHz mod for the T series should be roughly the same as the A series however I don't think anyone has ever actually done it to verify 100% the exact components that need to be changed.

--- End quote ---

I haven't seen it done either and agree that it would be roughly the same. There's not a lot of difference in signal paths between the A/T/G versions.

--- End quote ---

The 1.5 GHz mod is more fun, wouldn't you agree?  >:D >:D >:D >:D >:D

--- End quote ---
To summarize the basic difference if  I understand it correctly: upgrading up to 500 MHz requires changing a few L, C and R per channel. The most difficult part is unsoldering the RF shields. To upgrade to 1 GHz requires changing relays and other multi-terminal components which are trickier to desolder.
TheSteve:
Pretty much, the 1 GHz mod is a much more extensive upgrade - and it costs a lot more because of the Teledyne attenuator relays.
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