If device is externally calibrated, only calibrated values are printed.
++ : high alarm, +  : high warning, -  : low warning, -- : low alarm.
NA or N/A: not applicable, Tx: transmit, Rx: receive.
mA: milliamperes, dBm: decibels (milliwatts).

                                 Optical   Optical
           Temperature  Voltage  Tx Power  Rx Power
Port       (Celsius)    (Volts)  (dBm)     (dBm)
---------  -----------  -------  --------  --------
Te1/49       23.1       3.29      -2.2      -3.0   
Te1/50       23.4       3.31      -2.2      -2.6   
Te1/51       21.5       3.29      -2.2      -2.1   
Te1/52       23.5       3.29      -2.4      -2.8  
