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2.1.3. Identify loop resistance
• By measuring the loop resistance of the cable, it is possible to check the condition and the quality of the cable
used for power transmission function of the EPoC device in advance.
1. Make a short the conductor and
shield on one side.
• In case of Copper-covered steel cable, the cable loop resistance can be significantly increased and It is strongly
recommended to check the cable loop resistance before installation because it can greatly affect the distance
performance of the devices
• The PoE transmission distance specified on the installation guide is the value when using RG-6 Coaxial cable with
10Ω or less / 200 meter.
• If accurate loop resistance is not measured, such as measuring KΩ, MΩ, etc. as result, check if the cable or BNC is
shorted or if there's power leakage on cable.
2. Measure the resistance (Ω) of the
conductor and shield on the other
side.
Pre-field verification — 11
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