Products > Test Equipment
Keysight 3000T scope 1 GHz(or more) hardware upgrade mod
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1359944032:
Thank you very much, forgive me for not looking at it seriously |O.
oaba:
To save the pads.
Use low temperature solder (Like chipquick, etc. ) first with load of flux. Prior removal.
EE-digger:
Fearing the shields, I held off any mods for a long time.  Finally did a 500MHz this morning on my 3000T and couldn't be happier.  605MHz BW (0.707) and 750MHz (50%).  Triggers beautifully everywhere but response hits a brick wall just a hair above 1GHz on this mod.

But regarding shield removal, it was a piece of cake.  I used a Pace medium/large chisel and Chemtronics Soder-Wick of the Rosin type.  Solder wicked away easily and the pads cleaned up like new.

Did the component removal with hot air and, against my better judgement, with no bottom heat.  This does take a bit longer when an attached via ties to a plane but still not bad.  This was with a Quick 861DW hot air station, my new favorite.  Super low air velocity is a plus for this tool.  It made my old Pace ThermoJet look like a toy in comparison to the wattage it delivers to the air.

With irons, the biggest shortcoming in SMT removal is inadequate heat and too small a tip, which cannot transfer the heat adequately.  Especially with the higher melting point of unleaded solder.

TheSteve had a good idea with his "undo" kit of parts.  He used separate bags.  Being somewhat lazy, I used double sided tape stuck to a card.  Parts are laid on the tape by channel and rough arrangement.  I let the parts cool first so they wouldn't get permanently "glued" to the card.


maomi84:
This is amazing!THANKS!  Steve
I `ll do it myself.
I have more question.
1、About K1 relay,Can I use 10dB relay here , such as  a150-10-12 & a150-10-5(Add  dc-dc ),I can only buy 10dB relays.
2、Is calibration necessary after mod.
TheSteve:
I doubt you can sub in a different value for the attenuator relays and have the scope handle range changes properly.
The self calibration seems to take care of the calibration issues. If this is adequate for your use case only you can decide.
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