This is a list of little things that are very hard to find, yet cause really huge unexplainable problems:
1.) One tiny strand of shielding gets wrapped around the stinger by Raydr:
This one causes nightmares for digital cable and cable modems. Remember, the shielding is supposed to keep stray signal from leaking into the cable. HOWEVER, if one little strand gets wrapped around the stinger, you've just created a huge "noise antenna" that projects all of that noise onto the cable line. If you look at your connectors and see this, don't try and fix it. Just cut the connector off and put a new one on.
2.) CALAN Sweep Transmitters by Engineer88:
Acterna (Calan) low-level sweep transmitters will cause downstream errors if the guardbands aren't set properly. This will cause packet loss to many customers on any plant fed by the sweep. Some modems are more sensitive to this than others.
Sweep must be at least 14 dB below video levels and guardbands must be at least 3.2 MHz wide to avoid interference.
3.) by zedsdead: Here's one i see a lot, the plastic insulation in around the center pin is not completely stripped off when stripping the cable (caused by dull blades), causing significant signal reduction.
Editor's Note: I see this a bit too! It's annoying, but pull that little bit of dielectric off. It can really hurt stuff!
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by Raydr 
last modified: 2002-04-09 17:15:29 |
