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Tektronix 556 oscilloscope trigger board unobtanium
Tektronix 556 Oscilloscope Trigger Board
I normally wouldn't sell this, because you never know when you are going to need it. But what the hell. I have three working 556s and I am very graterful for the man who found this and remembered that I had asked for it over a year earlier. So here it is.
Now this is the lower board, which goes in the right side of the scope. I used the upper board, which goes in the left side. But you could use this for the upper beam, either by mounting it backwards or by removing the necessary components and remounting them on your existing lower beam trigger board.
Tektronix Part number: 670-0042-00
If you have any questions or would like additional pictures please email me at ****@telus.net
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