Phihong USA Corporation | 47800 Fremont Blvd., Fremont, CA 94538 | 1.510.445.0100 | www.phihong.com
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Power up Midspan:
In order to power up your midspan insert an AC power cord into the appropriate connector on the
rear of your midspan. Once the cord is connected to a universal or redundant power source the
midspan will turn on.
With AC power applied, the unit starts-up and all LEDs should illuminate. The device runs through
a quick power-on test, which takes a couple of seconds. During this period, all ports are initially
disabled and the port indicators light up. After completing the cold start, ports will operate under
normal conditions and the unit is ready to connect to powered devices.
2.4
LED Indicators:
Port LED:
Model POE75U-1UP-N-R has three LED indicators labeled “ON”, “FAULT”, and “CONNECT”.
The “ON” LED will illuminate a solid green to indicate that the AC connection is good and that
unit is sufficiently powered. The “CONNECT” LED will illuminate solid green if it detects a
device that requires more than 33.6W of power (12.5K-resistance). The “CONNECT” LED will
illuminate a blinking green if it detects a device requiring less than 33.6W of power (25K resistance)
and will power in IEEE802.3at mode. Should a fault occur with the connections; the yellow Fault
LED will blink till the error is resolved. For a full description of the LED diagnostics, please review
the individual product datasheet on www.phihong.com.
For the series of multiport midspans, for each port the left LED (as viewed from front) will be
blinking (green) if 25K-resistance load is detected, meaning that the powered device requires less
than 33.6W of power and the midspan has powered in “IEEE802.3at mode”. The LED will
illuminate in solid green if the powered device requires more than 33.6W of PoE and the midspan
has powered up in Full Power mode. The right LED will blink Yellow if a fault has occurred with
the connection. No LEDs will illuminate if the port is not connected.
NIC LED:
If both LEDs are off, it indicates that Midspan is disconnected from the network.
If the green LED is illuminated and the orange LED blinks, it indicates the Midspan is properly
connected to the network.
