6-20
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
Chapter 6 Optical Add/Drop Cards
6.5.4 AD-4C-xx.x Port-Level Indicators
6.5.4 AD-4C-xx.x Port-Level Indicators
You can find the status of the card port using the LCD screen on the ONS 15454 fan-tray assembly. Use
the LCD to view the status of any port or card slot; the screen displays the number and severity of alarms
for a given port or slot. The AD-4C-xx.x card has 12 LC-PC-II optical ports: eight for add/drop channel
client input and output, two for express channel input and output, and two for communication.
6.6 AD-1B-xx.x Card
Note See the “A.8.4 AD-1B-xx.x Card Specifications” section on page A-41 for hardware specifications.
The 1-Band OADM (AD-1B-xx.x) card passively adds or drops a single band of four adjacent
100-GHz-spaced channels. Eight versions of this card with eight different part numbers—each version
designed for use with one band of wavelengths—are used in the ONS 15454 DWDM system. The card
bidirectionally adds and drops in two different sections on the same card to manage signal flow in both
directions. This card can be used when there is asymmetric adding and dropping on each side (east or
west) of the node; a band can be added or dropped on one side but not on the other.
The AD-1B xx.x can be installed in Slots 1 to 6 and 12 to17 and has the following features:
• Passive cascaded interferential filters perform the channel add and drop functions.
• Two software-controlled VOAs regulate the optical power flowing in the express and drop OADM
paths (drop section).
• Output power of the dropped band is set by changing the attenuation of the VOA drop.
• The VOA express is used to regulate the insertion loss of the express path.
• VOA settings and functions, photodiode detection, and alarm thresholds are internally controlled.
• Virtual photodiode (firmware calculation of port optical power) at the common DWDM output are
monitored within the software.
Figure 6-15 shows the AD-1B-xx.x faceplate.
Green ACT LED The green ACT LED indicates that the AD-4C-xx.x card is carrying traffic
or is traffic-ready.
Amber SF LED The amber SF LED indicates a signal failure or condition. 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 6-14 AD-4C-xx.x Card-Level Indicators (continued)
Card-Level Indicators Description
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