On Tue, Dec 19, 2023 at 03:13 PM, <Zentronics42@...> wrote:
EVERYTHING that I have gotten in to the lab in the 7K hardware has needed some kind of servicing. It could be as simple as cleaning the attenuator contacts to as complex as a full rebuild of the plugin followed by a calibration.
What do you recommend using to clean switch contacts that won't hurt the plastics? I know some contact cleaner sprays can soften some types of plastic.
The listed plugins 7a26, 7B70, and 7B71 are a good match for the frame though you might want to be on the lookout for a 7B53A(100Mhz Dual) or a 7B92 / A (500Mhz) the dual time bases will free up a Horz bay for another plugin. I was not a fan of the 7B7X plugins for the way they implemented the trigger control. Lots of plastic and when it cracks it is REALLY hard to get something working again. If you still want to run dual plugins kick up to the 7B80 and 7B81 . DO NOT grab a 7b87. The 7B87 is kind of a special time base for the 7854 to allow single shot capture.
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I was originally going to order a 7B92 from the seller I got the scope from, but was told that while it will technically work in the 7704, the original 7704 does not have provisions to vertically separate timebases from the same plugin. Not really a huge deal, but that's the main reason I chose the 7B7x plugins instead of a dual timebase one. I might pick up a pair of the 7B80/81 plugins at some point in the future if I have problems with the 7B7x ones.
Thanks for the info, I'll keep the plugins you listed in mind!
