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I don’t want to spam the list, But I will put it out there since it has been a while. I have video content up on you tube specializing in restoration repair and alignment of test equipment in general however it is mostly Tektronix replated content. I am the owner of the "Zenwizard Studios" YouTube channel. I have also added links to the videos on the Tekwiki under the specific pages as well. In channel related news I am always looking for project units to put in front of the lens so If any one has anything they are willing to parts ways with let me know I am always interested. I have a moderately specified calibration lab at my disposal, though it is a bit noisy.

In terms of the 284 I am working on getting some high frequency couplers and cables in to the lab because I need to do an alignment video on the 284. But here is the info:

The only REALLY critical part in the unit is D180. If that is bad you will need a parts doner. I have tried some of the Russian TD’s in place and it is true they will pulse I have not yet achieved the rise time of the speced part. I have found a company that will made replacements D180’s however they were special order LONG wait time and $250.00 US Each.

The air line is a VERY strange beast and there are some faults in there that I get in to in the videos “drifty resisters”. But the physical working space is quite tight. Especially with the funky back termination resister assembly. I do not have ANY of the required gear to align the unit in the lab however I have easer to use and more modern equivalents. DSA602A and an 11801C with a 12Ghz plugin and a good frequency counter. I need to 3.5mm to SMA converters as well as a GR->SMA to get the video going. So the alignment should be a LOT easer than the documentation. It calls for 500 series era instruments.

Channel Link -

284 specific content including D180 testing



If I can be of assistance, please let me know

Zen