The maximum receiver RF level for HP series ODUs, measured by RSSI, is depicted below. If the RSSI value is higher than listed for the modulation being used, packet loss may result. When operating short range links with a high receiver input level, always make sure that the transmitter power is adjusted down from the maximum to ensure the levels shown below are not exceeded, or active ATPC with a target rssi that is at least several dB below the levels shown to provide a safety margin.
|
Modulation Level |
Max RSSI |
|
256 QAM |
-24 dBm |
|
128 QAM |
-22 dBm |
|
64QAM |
-20 dBm |
|
32QAM |
-18 dBm |
|
16QAM |
-16 dBm |
|
QPSK |
-14 dBm |
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