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If you really want to do this look here:hi all,
can anybody plz tell how do we measure cahracteristic impedence of a
cable, may it be coaxial, stp, utp or power cable.it looks impedence
matching and trying to get the maximum power. i s there any other way?
Well, you can safely forget about the concept for an equipment power cable.hi all,
can anybody plz tell how do we measure cahracteristic impedence of a
cable, may it be coaxial, stp, utp or power cable.it looks impedence
matching and trying to get the maximum power. i s there any other way?
Just measure it.hi all,
can anybody plz tell how do we measure cahracteristic impedence of a
cable, may it be coaxial, stp, utp or power cable.it looks impedence
matching and trying to get the maximum power. i s there any other way?
Just measure it.
1] Measure the "L" with the lead ends short circuited.
2] Measure the open circuit "C"
3] Then Zo= square root of L/C
Some I did last year ...
2mtr of "75ohm" coax L=1.48uH C=146pF ... Zo=100ohm*
2mtr of 50ohm coax L=0.83uH C=168pF ... Zo=70ohm
2mtr of 'twin flex' L=1.23uH C=70pF ... Zo=132ohm
2mtr of 'mains cable' L=2.84uH C=281pF ... Zo=100ohm
3mtr CAT5 patch cable L=2.51uH C=157pF ... Zo=126ohm
(measured twice, still same result!)
I would either look it up in the cable spec, calculate it, or measurecan anybody plz tell how do we measure cahracteristic impedence of a
cable, may it be coaxial, stp, utp or power cable.it looks impedence
matching and trying to get the maximum power. i s there any other way?