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Author Topic: Infinium scope 54815A upgrade (please help to find the right post) to 54825A  (Read 493 times)

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Offline WarhawkTopic starter

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Infinium scope 54815A upgrade (please help to find the right post) to 54825A
« on: September 23, 2023, 10:57:33 am »
Guys, there was somewhere a post that describes how to "upgrade" HP Infinium 5481x scope to higher version. If I remember correctly, there is somewhere a resistor to add or remove on the ACQ board close to the oscillator.
However, I don't remember more. Does anyone know, please? I have the unit opened now. :)
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Offline WarhawkTopic starter

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Re: Infinium scope 54815A upgrade (please help to find the right post) to 54825A
« Reply #1 on: September 23, 2023, 08:29:07 pm »
Found it, if search engine brings you here, it is post #223 in thread:
https://www.eevblog.com/forum/testgear/agilent-54835a-scope-(4-channel-1ghz-4gss)-repair-uphack/200/

Short R134 close to the DIP oscillator and run the calibration afterwards.
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