16-62
Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
April 2006
Chapter 16      Card Reference
16.7.2 AD-2C-xx.x Card
16.7.1.2 AD-1C-xx.x Card-Level Indicators
The AD-1C-xx.x card has three card-level LED indicators, described in Table 16-37.
16.7.1.3 AD-1C-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-1C-xx.x has six LC-PC-II optical ports: two for add/drop channel client 
input and output, two for express channel input and output, and two for communication.
16.7.2 AD-2C-xx.x Card
The 2-Channel OADM (AD-2C-xx.x) card passively adds or drops two adjacent 100-GHz channels 
within the same band. Sixteen versions of this card—each designed for use with one pair 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. Each version of the 
card has a different part number.
The AD-2C-xx.x has the following features:
• Passive cascade of interferential filters perform the channel add and drop functions.
• Two software-controlled VOAs in the add section, one for each add port, regulate the optical power 
of inserted channels. 
• Software-controlled VOAs regulate insertion loss on express channels.
• Internal control of the VOA settings and functions, photodiode detection, and alarm thresholds.
• Software-monitored virtual photodiodes (firmware calculation of port optical power) at the common 
DWDM output and input ports. 
Figure 16-39 shows the AD-2C-xx.x faceplate.
P4 OUT EXP EXP TX
V1 IN COM COM RX
V2 OUT COM COM TX
Table 16-36 AD-1C-xx.x Port Calibration (continued)
Photodiode CTC Type Name Calibrated to Port
Table 16-37 AD-1C-xx.x Card-Level Indicators 
Card-Level Indicators Description
Red FAIL LED 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.
Green ACT LED The green ACT LED indicates that the AD-1C-xx.x card is carrying traffic 
or is traffic-ready.
Amber SF LED The amber SF LED indicates a signal failure. The SF LED also illuminates 
when the transmitting and receiving fibers are incorrectly connected. When 
the fibers are properly connected, the LED turns off.