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Tester de masurat Cabluri UTP/BNC

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Va salut detin un aparat Tester care masoara semnalul la Internet si Semnal TV. Model: ST-248.
In casa am 4 Televizoare la care am verificat (de test) fiecare cablu din diferite camere. In Sufragerie imi apare ca am semnal TV la acest tester, in alte 3 camere imi spune ca nu am semnal si desi televizoarele au semnal tv. De ce se intampla asta? Are careva idei?





Edited by Deio
Corectat atasamente
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Am sa te rog sa nu mai deschizi multiple topice inutile. Un singur topic despre echipamente e de ajuns. Topicele se deschid in zona corespunzatoare.

De asemenea, atasamentele se posteaza ca atasamente, nu direct poze, arata nepotrivit si sunt multi ce au telefoane. Am sa corectez eu.

Edit: Mutat in zona hardware si corectat titlu

Acela este testor de cabluri retea UTP si BNC, nu pentru testat cabluri TV (alta impedanta - 75OHM in loc de 50OHM cat are cablul retea), poate si de acolo valorile dau erori.

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Serios ca acel aparat nu e testor cabluri TV. E testor retea. Cablurile TV au alta impedanta, pana si conectorii sunt diferiti. La TV e conector F, iar la retea e BNC. (Bayonet Neill–Concelman)

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