Installing the Cisco ONS 15216 DWDM and CWDM Passive Optical Modules

Safety Information

Before you install, operate, or service the Cisco ONS 15216 DWDM and CWDM passive optical modules, you must read the Regulatory Compliance and Safety Information for Cisco Optical Transport Products document for important safety information and warning translations.

The Cisco ONS 15216 DWDM and CWDM passive optical modules are compliant with the GR 1089, UL60950 /CSA 22.2 No. 60950-00, and IEC 60950 standards.

Laser Radiation Emission Restrictions

The Class 1M Laser safety and warning label affixed to the Cisco ONS 15216 DWDM and CWDM passive optical modules indicate that the product should never be used or installed in an optical network with emissions higher than Class 1M.

Warning Class 1M laser radiation when open. Do not view directly with optical instruments. Statement 281

Laser Safety During Operation

Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments. Statement 1051

Electrical Safety

The Cisco ONS 15216 DWDM and CWDM passive optical modules are optically and electrically passive and require no electrical connections. No electrostatic discharge (ESD) or other electrical safety considerations apply.

Features

The operating features of the Cisco ONS 15216 4-Channel Add/Drop module include:

• Low dispersion
• Low insertion loss
• High channel isolation
• Wide clear bandwidth
• Full C-band coverage
• Multiplex and demultiplex 4-channels
• Athermal design

Functional Description

The 8-channel filters of the Cisco ONS 15216 4-Channel Add/Drop module are used to:

• Add 4-channel wavelengths from Ch i -RX input ports with the DWDM aggregated signal coming from the EXP-RX port and direct the combined signal towards the COM-TX port. An integrated tap-coupler splits one percent of the combined signal towards the MON-TX port that is used for monitoring purpose.
• Drop 4-channel wavelengths from the DWDM aggregated signal coming from the COM-RX input port towards the Ch i -TX ports, and route the remaining DWDM wavelengths towards the EXP-TX port. An integrated tap-coupler splits one percent of the aggregated signal coming from COM-RX port towards the MON-RX port that is used for monitoring purpose.

Figure 3 Optical Block Diagram of the Cisco ONS 15216 4-Channel Add/Drop Module

Ten ONS 15216 4-Channel Add/Drop modules can combine to form a 40-channel C-band wavelength plan. The Cisco ONS 15216 4-Channel Add/Drop module connects independent fibers from the channel ports (Ch i ports) to the fiber facilities of the carrier, through the common ports (COM ports).

Each ONS 15216 4-Channel Add/Drop module has two optical monitoring ports (MON-TX and MON-RX) and express ports (EXP-RX and EXP-TX). The monitoring ports are used for monitoring purpose and the express ports are used to cascade more than one ONS 15216 4-Channel Add/Drop modules.

Channel Wavelength Allocation

Table 1 describes the C-band channel wavelength plan for the Cisco ONS 15216 4-Channel Add/Drop modules.

Port Label Description

Table 2 lists the connection ports, description, and the type of connectors used for each port. All ports are on the module faceplate, which is equipped with optical LC adapters and one USB Type A receptacle connector.

Table 2 Port Label Description of the Cisco ONS 15216 4-Channel Add/Drop Module

Channel Identification Label

The channel identification label provides port identification of the ONS 15216 4-Channel Add/Drop module. The channel ID label is placed on the faceplate of the ONS 15216 4-Channel Add/Drop module.

Figure 4 shows an example of the Channel ID label placed on the ONS 15216 4-Channel Add/Drop module. This label does not represent the actual channel identification.

Figure 4 Cisco ONS 15216 4-Channel Add/Drop Module Label

Optical Specifications

The following tables provide the optical specifications of the ONS 15216 4-Channel Add/Drop module.

Table 3 Cisco ONS 15216 4-Channel Add/Drop Module Optical Specifications

Features

The operating features of the Cisco ONS 15216 8-Channel CWDM Mux/Demux module include:

• Low dispersion
• Low insertion loss
• High channel isolation
• Wide clear bandwidth
• Full CWDM-band coverage
• Multiplex and demultiplex 8-channels
• Athermal design

Functional Description

The 16-channel filters of the Cisco ONS 15216 8-Channel CWDM Mux/Demux module are used to:

• Multiplex 8-channel wavelengths from Ch i -RX input ports and direct the composite signal towards the COM-TX output port. An integrated tap-coupler splits one percent of the combined signal towards the MON-TX port that is used for monitoring purpose.
• Demultiplex 8-channel wavelengths from the CWDM composite signal coming from the COM-RX input port towards the Ch i -TX output ports. An integrated tap-coupler splits one percent of the aggregated signal coming from the COM-RX port towards the MON-RX port that is used for monitoring purpose.

Figure 6 Optical Block Diagram of the Cisco ONS 15216 8-Channel CWDM Mux/Demux Module

The Cisco ONS 15216 8-Channel CWDM Mux/Demux module connects independent fibers from the channel ports (Ch i ports) to the fiber facilities of the carrier, through the common ports (COM ports).

Each Cisco ONS 15216 8-Channel CWDM Mux/Demux module has two optical monitoring ports (MON-TX and MON-RX) used for monitoring purpose

Channel Wavelength Allocation

Table 4 describes the channel wavelength plan for the Cisco ONS 15216 8-Channel CWDM Mux/Demux module.

Port Label Description

Table 5 lists the connection ports, description, and the type of connectors used for each port. All ports are on the module faceplate, which is equipped with optical LC adapters and one USB Type A receptacle connector.

Table 5 Port Label Description of the 8-Channel CWDM Mux/Demux Module

Channel Identification Label

The channel identification label provides port identification of the Cisco ONS 15216 8-Channel CWDM Mux/Demux module. The channel ID label is placed on the faceplate of the Cisco ONS 15216 8-Channel CWDM Mux/Demux module.

Figure 7 shows the Channel ID label placed on the Cisco ONS 15216 8-Channel CWDM Mux/Demux module.

Figure 7 Cisco ONS 15216 8-Channel CWDM Mux/Demux Module Label

Optical Specifications

Table 6 provides the optical specifications of the Cisco ONS 15216 8-Channel CWDM Mux/Demux module.

Table 6 Optical Specifications of the 8-Channel CWDM Mux/Demux Module

Features

The operating features of the Cisco ONS 15216 OSC Combiner/Splitter module include:

• Low dispersion
• Low insertion loss
• Full C-band coverage
• Athermal design

Functional Description

The Cisco ONS 15216 OSC Combiner/Splitter module:

• Combines the DWDM signal from the COM-RX input port with the OSC signal from the OSC-RX input port and directs the combined signal towards the LINE-TX output port. An integrated tap-coupler splits one percent of the aggregated signal towards the MON-TX port that is used for monitoring purpose.
• Splits the DWDM signal and the OSC signal from the LINE-RX input port and directs the OSC signal to the OSC-TX output port, while the remaining DWDM signal is directed to the COM-TX output port. An integrated tap-coupler splits one percent of the aggregated signal coming from the LINE-RX port towards the MON-RX port that is used for monitoring purpose.

Figure 9 Optical Block Diagram of the Cisco ONS 15216 OSC Combiner/Splitter Module

The Cisco ONS 15216 OSC Add/Drop module connects independent fibers from the line and OSC ports to the fiber facilities of the carrier, through the common ports (COM ports).

Each Cisco ONS 15216 OSC Add/Drop module has two optical monitoring ports (MON-TX and MON-RX) used for monitoring purpose.

Port Label Description

Table 7 lists the connection ports, description, and the type of connectors used for each port. All ports are on the module faceplate, which is equipped with optical LC adapters and one USB Type A receptacle connector.

Table 7 Port Label Description of the Cisco ONS 15216 OSC Combiner/Splitter Module

Channel Identification Label

The port identification label provides port identification of the Cisco ONS 15216 OSC Combiner/Splitter module. The port label is placed on the faceplate of the Cisco ONS 15216 OSC Combiner/Splitter module.

Figure 10 shows the port identification label placed on the Cisco ONS 15216 OSC Combiner/Splitter module.

Figure 10 Cisco ONS 15216 OSC Combiner/Splitter

Optical Specifications

Table 8 provides the optical specifications of the Cisco ONS 15216 OSC Combiner/Splitter module.

Table 8 Cisco ONS 15216 OSC Combiner/Splitter Module Optical Specifications

Features

The operating features of the Cisco ONS 15216 Optical Isolator module include:

• Low dispersion
• Low insertion loss
• High channel isolation
• Full C-band coverage
• Athermal design

Functional Description

The optical isolator minimizes optical back reflection. Back reflection is a small amount of light that is reflected back towards the transmitting optical component. The optical isolator absorbs this reflected light so that the transmitting optical component operates with minimal interference. Optical back reflection is common in fiber-based transmissions.

Diagram 1 in Figure 13 shows the optical block diagram of the Cisco ONS 15216-FLD-2-ISO module.

Diagram 2 in Figure 13 shows the optical block diagram of the Cisco ONS 15216-FLD-9-ISO module.

Figure 13 Optical Block Diagram of Cisco ONS 15216-FLD-2-ISO and Cisco ONS 15216-FLD-9-ISO Modules

Port Label Description

Table 9 lists the connection ports, description, and the type of connectors used for each port. All ports are on the module faceplate, which is equipped with optical LC adapters and one USB Type A receptacle connector.

Table 9 Port Label Description of the Optical Isolator Module

Channel Identification Labels

The channel identification label provides port identification of the Cisco ONS 15216 Optical Isolator module. The port label is placed on the faceplate of the Cisco ONS 15216 Optical Isolator module.

Figure 14 shows the port identification label placed on the 2-way Cisco ONS 15216 Optical Isolator module.

Figure 14 Cisco 15216-FLD-2-ISO Module Label

Figure 15 shows the port identification label placed on the 9-way Cisco ONS 15216 Optical Isolator module.

Figure 15 Cisco 15216-FLD-9-ISO Module Label

Optical Specifications

Table 10 provides the optical specifications for the Cisco ONS 15216 Optical Isolator module.

Table 10 Cisco ONS 15216 Optical Isolator Module Optical Specifications

Environmental Performance Specifications

Table 11 provides the environmental performance specifications of the Cisco ONS 15216 DWDM and CWDM passive optical modules.

Table 11 Environmental Performance Specifications

Mechanical Specifications

Table 12 provides the mechanical dimensions of the Cisco ONS 15216 DWDM and CWDM passive optical modules.

Table 12 Mechanical Specifications

Unpack and Verify the Rack Mounting Bracket and Optical Modules

The rack mounting bracket and the optical modules are shipped in separate packages. This procedure describes the steps for unpacking and verifying both the components.

Step 1 Unpack and inspect the rack mounting bracket and optical modules.

The rack mounting bracket package should include these components with the quantity of the item (specified in parentheses), included in the package.

• 19-inch ANSI/IEC rack mounting bracket assembled with 3 filler panels
• Straight external brackets for 23-inch ANSI installation (2)
• Z-shaped external brackets for ETSI installation (2)
• #12-24 x 0.50 pan-head Phillips screws (4)
• #12 lock washers (8)
• M6 x12 pan-head Phillips screws (12)
• Lock washers for M6 screws (8)
• Velcro strips for fiber management (4)
• Tie-wraps for locking the inventory USB plug cable (2)
• Production test report form showing the part number and serial number of the manufacturer, Cisco product part number, date, and device description
• Packing slip

The optical module package should include the following components:

• Optical modules
• Production test report form showing the part number and serial number of the manufacturer, Cisco product part number, date, and device description
• Packing slip

Step 2 Compare the equipment received with the packing slip and the equipment list that customer service provided. If there are any discrepancies, notify the Customer Service Center.

Step 3 Check for external damage. Visually check all components and immediately report any shipping damage to your customer service representative. Have this information ready:

• Invoice number of shipper (see packing slip)
• Model and serial number of the damaged unit
• Description of damage
• Effect of damage on the installation
• Packing slip

Install the Rack Mounting Bracket

This procedure explains how to install the rack mounting bracket to the ANSI, IEC, or ETSI standard equipment rack.

Step 1 Insert the tie-wraps on both sides of the rack mounting bracket.

Step 2 To mount the rack mounting bracket to the standard equipment rack:

• For a 19-inch (482.6-mm) ANSI or IEC configuration, align the rack mounting bracket screw holes against the equipment rack screw holes (see Figure 16).

Figure 16 Installing the Rack Mounting Bracket on a 19-inch Equipment Rack

• For a 23-inch (584.2-mm) ANSI configuration:

– Align the straight external bracket screw holes against the rack mounting bracket screw holes (see Figure 17).

– Insert the M6 screws along with the lock washers and tighten them.

– Align the extended rack mounting bracket screw holes against the equipment rack screw holes (see Figure 17).

Figure 17 Installing the Rack Mounting Bracket on a 23-inch Equipment Rack

• For an ETSI configuration:

– Align the Z-shaped external bracket screw holes against the rack mounting bracket screw holes (see Figure 18).

– Insert the M6 screws along with the lock washers and tighten them.

– Align the extended rack mounting bracket screw holes against the equipment rack screw holes (see Figure 18).

Figure 18 Installing the Rack Mounting Bracket on an ETSI Equipment Rack

Step 3 Insert the screws along with the lock washers and tighten them.

Install the Optical Module

This procedure explains how to install the optical module into the rack mounting bracket.

Step 1 Install the rack mounting bracket on the equipment rack by following the steps described in the “Install the Rack Mounting Bracket” section.

Step 2 Identify the slot in the rack mounting bracket to install the optical module.

Note A single-slot (left or right) can accommodate a 4-Channel DWDM Add/Drop module, or an OSC Combiner/Splitter module, or a 2-way Optical Isolator module. A double-slot (left or right) can accommodate one 8-Channel CWDM Mux/Demux module or a 9-way Optical Isolator module.

Step 3 Loosen the captive screws to remove the filler panel from the rack mounting bracket (see Figure 19).

Figure 19 Removing the Filler Panel from the Rack Mounting Bracket

Step 4 Insert the optical module into the empty slot (see Figure 20).

Figure 20 Installing the Optical Module into the Rack Mounting Bracket

Step 5 Tighten the captive screws of the optical module to fix them into the rack mounting bracket (see Figure 21).

Figure 21 Optical Modules Installed

Step 6 To connect the fibers as appropriate:

a. Remove the LC dust cap from the LC-LC adapter of the optical module.

b. Route the optical patch cords with the LC connectors to the optical module.

Refer to the port label description and channel identification port information of the optical module. For fibering instructions, see the “Fiber-Optic Connector Cleaning and Maintenance” section and the “Install and Route Fiber-Optic Cables” section.

Step 7 Connect the inventory USB Type A plug connector to the inventory USB Type A receptacle connector (see Figure 21) present on the optical module. To secure the USB cable, lock it with the tie-wrap.

Note The fibers and the USB cable can also be connected to the optical modules before installing them in the rack mounting bracket. This is more suitable in an ETSI environment or when there are other modules preinstalled in the equipment rack.

Fiber-Optic Connector Cleaning and Maintenance

Connector cleaning is required to maintain the performance of fiber-optic circuits. It is important that both the LC/UPC connector at the end of the fiber-optic cable and the mating bulkhead adapter on the front panel of the optical modules are clean before the connection is made.

Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments. Statement 1051

The following warning applies to disposal of chemicals and other materials used to clean connectors and adapters:

Warning Ultimate disposal of this product should be handled according to all national laws and regulations. Statement 1040

Before installing the fiber-optic cable, always perform the cleaning procedure for cable connectors described in the following section. Whenever possible, inspect each connector before connecting it to the mating bulkhead adapter on the front panel.

The LC bulkhead adapters on the optical modules are less likely to get dirty if they are capped when not in use. Because the procedure for a thorough cleaning of these adapters is complicated, we recommend that you use a commercially available cleaning kit and closely follow the instructions included with the kit.

Customer Supplied Cleaning Materials

The Type A fiber-optic connector cleaners (for example, CLETOP reel) are recommended to clean the cable connectors, but are not supplied with the Cisco ONS 15216 DWDM and CWDM passive optical modules.

When cleaning a paired cable connector (bulkhead mating adapter), always clean the mating adapter first.

If properly maintained (only used with clean, defect-free fiber connectors and capped when not in use), the mating adapter would not require cleaning. However, if you suspect the adapter is dirty, clean it by using the CLETOP stick swab.

Note For multi-fiber cable assemblies, use specific cleaning tools or materials designed for the assembly type.

Clean the Bulkhead Mating Adapters

This procedure explains how to clean the bulkhead mating adapters.

Step 1 Read the manufacturer (cleaning cartridge) instructions to insert the cartridge cleaning tip into the mating adapter.

Step 2 Slide the lever on the cartridge to swipe the mating surface.

Note Always keep unused adapter ports and fiber connectors capped with a clean dust cap.

Clean Fiber-Optic Cable Connectors

The tools required to clean fiber-optic cable connectors are:

• Inspection microscope
• Type A fiber-optic connector cleaner (CLETOP reel)
• Optical swab
• Optical receiver cleaning stick

Step 1 Using an inspection microscope, inspect each fiber connector for dirt, cracks, or scratches.

Step 2 Replace any damaged fiber connectors.

Note Replace all dust caps whenever the equipment is unused for 30 minutes or more.

Note Do not reuse optical swabs. Keep unused swabs away from work surfaces.

Step 3 Clean the fiber connectors with CLETOP reel:

a. Remove the dust cap from the fiber connector.

b. Press the lever down to open the shutter door. Each time you press the lever, you expose a clean wiping surface.

c. Insert the connector into the CLETOP cleaning cassette slot, rotate one quarter turn, and gently swipe downwards.

d. Use an inspection microscope to inspect each fiber connector for dirt, cracks, or scratches. If the connector is not clean, repeat Steps a to b .

e. Insert the fiber connector into the applicable adapter or attach a dust cap to the fiber connector.

Note If you must replace a dust cap on a connector, first verify that the dust cap is clean. To clean the dust cap, wipe the outside of the cap using a dry lint-free wipe and the inside of it using a CLETOP stick swab (14100400).

Install and Route Fiber-Optic Cables

Warning Invisible laser radiation may be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments. Statement 1051

Caution When connecting an optical fiber patch cord between the optical module and the optical card ports in the Cisco ONS 15454, use the electrostatic discharge wristband supplied with the Cisco ONS 15454. Plug the wristband into the ESD jack on the lower right front side of the Cisco ONS 15454.

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Note Always clean all fiber connectors thoroughly before making the connection with the mating adapter. Very small particles can permanently damage the end of the mating fiber inside the optical module, which makes regular cleaning imperative. For cleaning instructions see “Fiber-Optic Connector Cleaning and Maintenance” section.

Note The optical modules feature LC/UPC bulkhead adapters. Always use fiber-optic cables equipped with the corresponding (LC/UPC) connector type. Using any other type of connector results in damage to the connector or adapter, or both.

This procedure explains how to install and route fiber-optic cables.

Step 1 Place the LC/UPC cable connector in front of the corresponding bulkhead adapter on the front panel of the optical modules.

Step 2 Align the keyed ridge of the cable connector with the slot in the receiving adapter.

Step 3 Gently push the cable connector into the adapter until you hear a click, which indicates that the latching system is engaged.

Step 4 Route the fiber cables through the left or right side.

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