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.
Well, I have just taken a cover off my 012-038 500-series flexible extender,
and the cable is just 16-core plain wire. No coaxes in there at all. BUT
it is a good job I took the cover off, since there are two broken solder
joints in there with the wires just flapping. Cable length is 2 feet.
The rigid extender (013-0055-00) is different entirely. There are coaxes on
8, 9, 11, 14 and 16. All shields are linked and connected to pin 2. Also,
the shields are connected via 0.001u ceramic disc (Z5U) to pin 10. This
arrangement of shield connection is at both connectors. All other pins
(including 2 and 10) are connected with lengths of wire. The distance
between the connectors is 6".
Craig
