Connection For Lan Cable; 100Base-Tx And 10Base-T Connections - Panasonic FP2 ET-LAN Technical Manual

3.2 Connection for LAN Cable

3.2.1 100BASE-TX and 10BASE-T Connections

AFP2790
AFP27901
100BASE-T and 10BASE-T connections
Connect the UTP cable to the 100BASE-TX/10BASE-T connector (RJ45) on the front panel of the ET-
LAN unit.
UTP cable
Use Category 5 UTP cable. According to the ratings, Category 3 or better cable can be used with
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10BASE-T, but we recommend that you use Category 5 UTP cable, which provides higher reliability.
According to the ratings, UTP cable can be up to 100 m in length, but considering noise resistance, we
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recommend that you keep the cable under 10 m in length.
We recommend that you use shielded cable in environments where electrical noise is likely to be
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generated.
External power supply terminal
The external power supply terminal is not used when 100BASE-TX and 10BASE-T are being used.
Earth
The F.G. pin of the external power supply terminal on the front of the unit is connected to the outer
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metallic shell of the 100BASE-TX/10BASE-T connector (RJ45), or the outer metallic shell of the
10BASE5 (AUI) connector. These are also connected to the F.G. terminal of the power supply unit
through the backplane.
In an environment with a high noise level, the F.G. terminal should be grounded at a grounding
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resistance of 100 Ω or less.
3-4