Transceiver
(Does not apply to all STM-N cards) The Transceiver subtab shows the optical power received (OPR), optical power transmitted (OPT), and laser bias current (LBC) from the line card and stores these values with the performance monitoring (PM) counts for the 15-minute and 1-day periods. The physical layer performance parameters consist of normalized and non-normalized values of LBC, OPT, and OPR. For a list of ONS nodes and cards that support this subtab, see Maintenance.
 
Port
Displays the card port number.
Non-normalized LBC (mA)
Displays the actual operating value of laser bias current (mA) for the specified card port. This value should be somewhat consistent from port to port and cannot be configured.
Non-normalized OPR (dbm)
Displays the actual operating value of optical power received (dBm) for the specified card port. This value varies from port to port because of received optical signal power differences. This value can be configured by calibrating the nominal value to the initial receive power level when the port is put in service.
Non-normalized OPT (dbm)
Displays the actual operating value of optical power transmitted (dBm) for the specified card port. This value should be somewhat consistent from port to port and cannot be configured.
Refresh
Refreshes the tab fields.
Help
Displays context-sensitive help.

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