Cat5 Network cable

  • Thread starter Thread starter Dave Volke
  • Start date Start date
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Dave Volke

Hi All !
I am trying to link my PC which is in the middle of a long building to our
company network switch.
If I connect my laptop to the switch with a patch cable all works fine.
However, the run to my office is 60 metres and as far as I know 100metres is
the limit for Cat5 twisted pair. I have now tried 3 seperate cables and I
cannot get a link. I have even tried re-routing the cable (through the loft
of the building) different ways but still no joy. What is the
solution................ a repeater maybe ????
 
Hi All !
I am trying to link my PC which is in the middle of a long building
to our company network switch.
If I connect my laptop to the switch with a patch cable all works
fine. However, the run to my office is 60 metres and as far as I know
100metres is the limit for Cat5 twisted pair. I have now tried 3
seperate cables and I cannot get a link. I have even tried re-routing
the cable (through the loft of the building) different ways but still
no joy. What is the solution................ a repeater maybe ????
Click to expand...

Just a thought...did you connect it properly? that was my problem - i just
took random wires and crimp it. Coloring is very important. Also if cable
goes near power lines, maybe you should try shielded one and connect shield
to ground.

for coloring see:

http://www.duxcw.com/digest/Howto/network/cable/cable1.htm
 
First 2 cables were "Plugged up" by a service engineer from my local store,
the third I decided to do myself. All cables have been wired correctly and
I have even tried one of the cables on my home network and it doesn't work
there either. I even used a meter on each plug pin and I get a readout of
3.7ohm. Does this give any indication ????
 
There is a specific order for the conductors in the connector. It's very
important to follow the correct order to preserve the electrical
transmission properties of the link. You can't just wire the connector
any convenient way and, even though you're consistent at each end,
expect it to work.
I did a quick search and found the link below which may help:

http://www.bnoack.com/index.html?http&&&www.bnoack.com/ethernet.html



First 2 cables were "Plugged up" by a service engineer from my local store,
the third I decided to do myself. All cables have been wired correctly and
I have even tried one of the cables on my home network and it doesn't work
there either. I even used a meter on each plug pin and I get a readout of
3.7ohm. Does this give any indication ????




Just a thought...did you connect it properly? that was my problem - i just
took random wires and crimp it. Coloring is very important. Also if cable
goes near power lines, maybe you should try shielded one and connect
shield

to ground.

for coloring see:

http://www.duxcw.com/digest/Howto/network/cable/cable1.htm
Click to expand...
[/QUOTE]
 
First 2 cables were "Plugged up" by a service engineer from my local
store, the third I decided to do myself. All cables have been wired
correctly and I have even tried one of the cables on my home network
and it doesn't work there either. I even used a meter on each plug
pin and I get a readout of
3.7ohm. Does this give any indication ????
Click to expand...

Sorry for delay - i was out...
3.7 ohm is ok since cable is 60 m long.if you got about 2.7 on all pins it's
OK.
But if it doesn't work, and we assume that your LAN card works (you said
you tried connection with another cable - if not, get 1 or 2 m long cable
and try) then it's only cable. As i said (and JCH also) check out color
order in any of given two links. if coloring is not exactly like shown
there, it won' t work. I had same problem - 2 m cable worked, long one
didn't. when i connected exactly as shown in the link, my 30-40 m long
connection works perfect. The point is that TX+ and TX- must be in the same
pair and also RX+ and RX- if they are not, interference occurs and that's
why color order is important.
 
hi dave,

you can actually buy cat6 cable now too, with rj-45 connectors already
attached. It's supposed to be a little better than cat 5 (but is backward
compatible). Maybe invest in one of them?
 
Nick said:
hi dave,

you can actually buy cat6 cable now too, with rj-45 connectors already
attached. It's supposed to be a little better than cat 5 (but is backward
compatible). Maybe invest in one of them?
Click to expand...

That shouldn't be necessary for a 60 meter run.
 
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