Hi everyone,
I have a DOCSIS 3 150 Mbps cable modem which just stopped working after a
substantial storm (i replaced it to make sure). Apparently the cable is
broken. While I'm waiting for the technician to show up next week, I was
wondering if anyone had an idea how I could kludge together a TDR to see if
I can find where the break might be? Am I right to think that you just
inject a pulse from a sig gen and measure the delay time to find out where
the break is? Do I need to use any specific bandwidth equipment, or will
anything do? Is there an easier way to get this done? I don't have a TDR,
but I have some 7000 series scopes and some non-tek sig gens that go up to
iirc 20 MHz. The tek mainframe's pulse gens will go higher (IIRC I have a
7904), but not sure if I can use those for this purpose.
Thanks
