[c-nsp] Interpreting DOM outputs

Robert Hass robhass at gmail.com
Sat Dec 31 11:52:37 EST 2011


Hi

I have few LX SFPs with DOM but I'm unsure if I reading outputs correctly.

                                           Optical   Optical
           Temperature  Voltage  Current   Tx Power  Rx Power
Port       (Celsius)    (Volts)  (mA)      (dBm)     (dBm)
---------  -----------  -------  --------  --------  --------
Gi4/1        39.6       3.21      12.4      -4.9     -11.2
Gi4/2        42.9       3.20      11.8      -4.7      -9.6
Gi4/5        38.9       3.33      20.9      -6.9     -12.3
Gi4/6        45.5       3.23      11.2      -4.9     -12.0

Tx Power '-4.9' better than '-6.9' (i.e. signal is stronger if TX
Power is '-4.9' comparing to '-6.9')
Rx Power '-9.6' is btter than '-11.2' (i.e. signal at receiver in case
of '-9.6')

Rob


More information about the cisco-nsp mailing list