Description of LED Functions for Gigabit Power Injector
Power-up Sequence:
Upon power-up, all 3 LEDs will light for 2 seconds, as part of the self-test for the internal
microprocessor software. After the 2 seconds period, the "ON" LED will illuminate green. The
DC output voltage is now available for powering a compliant load (to the 802.3af PoE
standards).
Detection Sequence:
Once a compliant load is attached to the output RJ45 connector, the green "CONNECT" LED
will illuminate.
Should the load be non-compliant then the LEDs will blink a code specific to the cause for
non-detection.
Detection Failure Codes:
1. Incorrect resistive signature – The green “CONNECT” and red “FAULT” LEDs will blink
3 times.
2. Incorrect capacitive signature – The green “ON” LED will blink 3 times.
3. Incorrect Voffset – The green “CONNECT” and green “ON” LEDs will blink 3 times.
4. Unstable current measurement – The green “ON” LED will blink 3 times
5. Low voltage sensed during detection (overload) – The red “FAULT” LED will blink 3
times
After the LEDs blink 3 times the Power Injector will continue to try to detect a valid load.
Until the correct load is applied, the LEDs will continue to blink. If there is an open circuit
connected to the output RJ45 then the LEDs will not blink but the Power Injector will continue
to try to detect a valid load.
Fault Sequence:
Should there be a fault such as an overload or short circuit then the red "FAULT" LED will
illuminate. The red “FAULT” LED will illuminate for 2 seconds and then go off as the power
supply tries to re-detect a valid load. If there is a problem detecting the load, the LED will
indicate a possible fault as per the codes in the section above.
PHIHONG [ PHIHONG USA INC. ]
