Omnitron Systems Technology iConverter CWDM/X 2 and 4 Channel Single-Fiber MUX/DEMUX - Manual (Page 2)

Port Definitions
Figure 2: Port Locations for 2-Channel CWDM/X Module
Figure 3: Port Locations for 4-Channel CWDM/X Module
Channel Port
The Channel Ports transmit and receive signals on specific CWDM wavelengths. Each
Channel Port supports a different transmit and receive wavelength based on the CWDM/X
model. The Channel Ports are multiplexed onto and demultiplexed from the Common
Port.
When connecting external dual fiber transceivers to the Channel Port, select an optical
transceiver that matches the receive wavelength of the specific Channel Port. Since the
Channel Port uses two different wavelengths over dual fiber, one wavelength for transmit (Tx)
and a different wavelength for receive (Rx), the receiver of the external dual fiber transceiver
must have the capability to detect the transmit wavelength of the Channel Port. Typically,
the receiver of a dual fiber transceiver has an operating center wavelength of 1260nm to
1610nm. Verify the external transceiver’s optical parameters before using.
Common Port
The Common Port transmits and receives the aggregated wavelengths connected to the
Channel and Expansion Ports over a single-fiber common link. CWDM/X modules are always
used in pairs. When connecting two CWDM/X modules, the COM-L port is connected to the
COM-R port on the matching pair.
Installation
1. Carefully slide the module into an open slot in an
iConverter chassis. Align the module
with the installation guides and ensure that the module is firmly seated against the
backplane. Secure the module by fastening the front panel thumbscrew (push in and
turn clockwise to tighten) to the chassis front. The CWDM/X module requires no external
Page 2
power, however, the module must be installed in an iConverter powered chassis with
a Network Management Module (NMM2 Model 8000N-0) or a media converter with
integrated management (such as the iConverter 10/100M2)*
2. Connect a single-mode, dual fiber duplex LC cable between the Channel Port of the
CWDM/X module and the attached device. It is important to ensure that the wavelength
on each fiber strand of the CWDM/X matches the wavelengths of the attached device.
Connect all Channel Ports in this manner. Ensure that the transmit (Tx) is attached to
the receive side of the device at the other end, and the receive (Rx) is attached to the
transmit side.
3. Connect a single-mode, single-fiber simplex LC cable between the Common Ports on
the CWDM/X modules (this connection may be made through fiber patch panels since
the modules may not be co-located). Ensure that the COM-L port at one end connects
to the COM-R port at the other end.
NOTE: The iConverter CWDM/X modules can not be installed in slots 4, 8, 12 and 16 of
a 19-Module Chassis or in the top slot of a 2-Module Chassis or in a 1-Module Redundant
Power Chassis.
*For complete management functionality, use M2 series (NMM2, GX/TM2, 2GXM2. 10/100M2,
2FXM2) or higher.
Design Considerations
iConverter CWDM/X modules are passive devices that require no external power. Attenuation
(signal loss) of less than 2.7dB will be realized through each port on the module (see
the CWDM/X Data Sheet for exact attenuation specifications for each model). Detailed
calculations should be performed for each fiber optic link in the network to ensure the proper
optical devices are specified with sufficient transmitter power.
When calculating optical loss, ensure that the total attenuation, plus a safety factor (typically
3dB), does not exceed the optical power budget. The optical power budget is the difference
between the transmitter optical output power and the receiver’s optical sensitivity. The
transmitter optical output power and receiver optical sensitivity values can be obtained from
the manufacturers of the respective equipment.
For more information, access Omnitron’s documentation download web page to view all
relevant documents:
http://www.omnitron-systems.com/downloads.php
Page 3