1.3.1. RJ45 connector (ETH1+POE)
Fig. 1.7: RJ45 Ethernet connector
RJ45 socket connector marked „ETH1+POE“ is a standard
10/100/1000Mbps metallic Ethernet port.
This port is also used for power sourcing the unit by PoE
(Power over Ethernet) or direct DC power source. Both an
active PoE power supply (compliant with IEEE 802.3at re-
spectively IEEE 802.3bt standards known also as PoE+
respectively PoE++) and a passive PoE power supply (with
wider voltage range than PoE) are supported.
Supported PoE types
of power sourcing are:
•
Active PoE
requires PoE power supply compliant with
standards IEEE 802.3bt or IEEE 802.3at (the second
one only for RAy3-17 and RAy3-24) and the reasonably
quality Ethernet cable, otherwise the proper function of
the unit can't be guaranteed. The norm defines supplied
voltage in the range 37-57V (for PoE+) respectively 51-
57V (for PoE++) and max current typically 0.55-2.0 A.
•
Passive PoE
can operate in extended voltage ranges
which depends on the maximum power consumption of
each model:
○
20 to 60 V
for 10, 17 and 24 GHz units (for unit boot at least 21 V to prevent booting with discharged
24 V battery)
○
37 to 60 V
for 11, 18 and 80 GHz units
○
Any polarity
of DC and PoE inputs are supported.
Note
Extended voltage ranges and polarities are identical with direct DC power sourcing described
in
Section 1.3.3, “DC power (using ETH1+POE)”
Maximum long-term voltage on the unit is recommended to be below 58 V (to ensure over-
voltage protection inside the unit stays deactivated).
RJ45 connector pins
are wired according standards IEEE 802.3bt (utilizes 4 pairs = 8 wires) and
IEEE 802.3at (utilizes 2 pairs = 4 wires). All units support all PoE modes of operation:
• Mode A: pins 1,2 (V+) and 3,6 (V-)
• Mode B: pins 4,5 (V+) and 7,8 (V-)
• Mode A+B: all 8 pins with numbers identical to Mode A and Mode B
Note
Additionally to IEEE norm all units can be powered by PoE or DC with op/- polarity.
PoE with 8-wires is strongly recommended for 10, 11, 18 and 80 GHz units due to their power
consumption >25 W. PoE with 8-wires is recommended also for other models to minimize the
energy lost in the Eth cable (it lowers the resistance of the Eth cable to half compared with 4-
wires PoE).
19
© RACOM s.r.o. – RAy3 Microwave Link
Product
Summary of Contents for RAy3-11
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