Cisco ONS 15454 SDH - Page 525

18-13
Cisco ONS 15454 SDH Procedure Guide, R7.0
78-17194-01
Chapter 18 DLPs D100 to D199
DLP- D109 Change Optics Thresholds Settings for STM-64 and MRC-12 Cards
Step 3 Modify any of the settings described in Table 18-2 by clicking in the field you want to modify. In some
fields you can choose an option from a drop-down list; in others you can type a value or select or deselect
a check box.
Step 4 Click Apply.
Note Because the optics thresholds are not retained after an STM-64 card is reset, the optics thresholds must
be configured every time one of these cards is reset, or any time the TCC/TCC2 card is reset.
Step 5 Return to your originating procedure (NTP).
Table 18-2 Optics Thresholds Settings
Parameter Description Options
Port (Display only) Port number.
• 1 (STM-64, STM64-XFP)
• 1–12 (MRC_12)
LBC-LOW Laser bias current–minimum. Default (15 min/1 day): 50 percent
LBC-HIGH Laser bias current–maximum. Default (15 min/1 day): 150 percent
OPT-LOW Optical power transmitted–minimum. Default (15 min/1 day): 80 percent
OPT-HIGH Optical power transmitted–maximum. Default (15 min/1 day): 120 percent
OPR-LOW Optical power received–minimum. Default (15 min/1 day): 50 percent
OPR-HIGH Optical power received–maximum. Default (15 min/1 day): 200 percent
Set OPR Setting the optical power received
establishes the received power level as
100 percent. If the receiver power
decreases, then the OPR percentage
decreases to reflect the loss in receiver
power. For example, if the receiver power
decreases by 3 dBm, the OPR decreases
50 percent.
Click SET.
Types Sets the type of alert that occurs when a
threshold is crossed. To change the type
of threshold, choose one and click
Refresh.
• TCA (threshold cross alert)
• Alarm
Intervals Sets the time interval for collecting
parameter counts. To change the time
interval, choose the desired interval and
click Refresh.
• 15 Min
• 1 Day