Hi, Dave:
The vertical signal connections are where the coax is used, plus two more for the "flipped version (580). Before the 580, they were not coax. For the rest of the connections, you can check any 540 or 580 scope schematic for the pinouts.
I have a description in a Calibration Fixtures book that I can scan that page and send you (does not include schematic). The part number for the "Fits All" version extender is: 013-055-00. Contact me off list at bill1904 at comcast dot net.
BR Bill Roberts
componenx wrote:
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I've searched the archives a few times, but I haven't found a really good description of the 500 series scope extension cable. Based on what I did find (and looking at my MFs and PIs), the 93 ohm coax should be used for the signals (pins 1 and 3), with gnd connections on both ends. The "HV" lines (9-12)should be generic coax with single-
ended grounds, and everything else can be straight thru single wire. Is this correct? Would it be better to use the single ended coax on all the other lines to reduce interferance? Is there a schematic or description of a "real" Tek extender cable anywhere?
I know that 16 point to point wires will do in a pinch, but since I have the time and RG62 cable, I might as well do it right.
I saw a few posts noting that RG62 is hard to find, but I have local stock of a few different types @ .50/foot
-Dave
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