Power Monitoring; Opt-Bst Amplifier-Level Indicators; Table 14-22 Opt-Bst Port Calibration; Table 14-23 Opt-Bst Card-Level Indicators - Cisco ONS 15454 DWDM Installation And Operation Manual

14.5.2 OPT-BST Amplifier Card
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The optical splitters each have a ratio of 1:99. The result is that the power at the MON TX and MON RX
Note
ports is about 20 dB lower than the power at the COM TX and COM RX ports.

14.5.2.3 Power Monitoring

Physical photodiodes P1, P2, P3, and P4 monitor the power for the OPT-BST card. The returned power
level values are calibrated to the ports as shown in

14.5.2.4 OPT-BST Amplifier-Level Indicators

The OPT-BST amplifier has three card-level LED indicators, described in

Table 14-23 OPT-BST Card-Level Indicators

Card-Level Indicators
Red FAIL LED
Green ACT LED
Amber SF LED
Cisco ONS 15454 DWDM Installation and Operations Guide, R4.7
14-42
Fast transient suppression
Nondistorting low-frequency transfer function
Settable maximum output power
Fixed output power mode (mode used during provisioning)
ASE compensation in fixed gain mode
Full monitoring and alarm handling with settable thresholds
Optical safety features, including signal loss detection and alarming, fast power down control, and
reduced maximum output power in safe power mode
OSRI, which is a software feature capable (through CTC) of shutting down the optical output power
or reducing the power to a safe level (automatic power reduction)
ALS, which is a safety mechanism used in the event of a fiber cut

Table 14-22 OPT-BST Port Calibration

Photodiode
P1
P2
P3
P4
Description
The red FAIL LED indicates that the card's processor is not ready or that
there is an internal hardware failure. Replace the card if the red FAIL LED
persists.
The green ACT LED indicates that the OPT-BST is carrying traffic or is
traffic-ready.
The amber SF LED indicates a signal failure or condition such as LOS on
one or more of the card's ports. The amber SF LED also illuminates when
the transmit and receive fibers are incorrectly connected. When the fibers are
properly connected, the light turns off.
Table 14-22.
CTC "Type" Name
Input Com
Output Line (Total Output)
Output Line (Signal Output)
Output COM
Output OSC
Chapter 14 Card Reference
Calibrated to Port
COM RX
LINE TX
LINE RX
Table 14-23.
December 2004