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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
April 2006
Chapter 16 Card Reference
16.5.2 OPT-BST Amplifier Card
16.5.1.2 OPT-PRE Amplifier Card-Level Indicators
The OPT-PRE amplifier has three card-level LED indicators, described in Table 16-21.
16.5.1.3 OPT-PRE Port-Level Indicators
You can find the status of the card ports 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 OPT-PRE amplifier has five optical ports located on the faceplate. MON is
the output monitor port. COM RX (receive) is the input signal port. COM TX (transmit) is the output
signal port. DC Rx is the MAL input signal port. DC Tx is the MAL output signal port.
16.5.2 OPT-BST Amplifier Card
This section describes the OPT-BST amplifier card. The OPT-BST gain range is 5 to 20 dB in constant
gain mode and output power mode. The OPT-BST is designed to support 64 channels at 50-GHz channel
spacing, but currently is limited to 32 channels at 100 GHz. The OPT-BST is a C-band DWDM EDFA
with OSC add-and-drop capability. When an ONS 15454 has an OPT-BST installed, it is only necessary
to have the OSCM to process the OSC. You can install the OPT-BST in Slots 1 to 6 and 12 to 17. To
control the gain tilt, the OPT-BST is equipped with a built-in VOA.
The OPT-BST features include:
• Fixed gain mode (with programmable tilt)
• True variable gain
• 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
• 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 16-21 OPT-PRE Amplifier 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 OPT-PRE is carrying traffic or is
traffic-ready.
Amber SF LED 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.
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