I thought this hint worth passing on, should you be troubleshooting persistent problems - such thatyou've needed to look at waveforms via scope (a real analog one, that is - at these risetimes). This from a Tektronix forum; believe the author is an EE working regularly with RF. First comment was from a less-experienced sort, then reply:

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[comment]
A quick way is to use a BNC tee and a ThinNet terminator -- I have these in my junk box, other folks might too. Works just fine for most situations.

Be careful using "network-grade" coax terminators for high-frequency RF. The ones I've seen become reactive as heck above 50 - 100 MHz or so.

[reply]
Unless you have a way to check their return loss at the frequencies you're concerned with, I would steer far, far away from 10Base2/ThinNet
terminators in RF lab work.
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FWIW,

A.