Omnitron Systems Technology iConverter Single-Fiber CWDM/AD - Manual (Page 2)

optical transceiver that matches the receive wavelength of the specific Channel
Port. Since the Channel Port uses two different wavelengths over dual fiber, 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.
Figure 1: Front Panel View of a 1-Channel CWDM/AD module
Figure 2: 1-Channel Add/Drop MUX/DEMUX
Common Port (Left and Right)
The aggregated wavelengths from the Channel Ports are transmitted and received
over the single-fiber Common Port. As shown in Figure 2, there are Left and Right
Common Ports on the CWDM/AD module. Common Port Left (COM-L) and Common
Port Right (COM-R) are internally connected to pass through all wavelengths not
dropped or added by the specific CWDM/AD model Only the specific wavelengths
of the model selected will be dropped to the appropriate Channel Port. Common
Port Left drops and adds wavelength traffic from Channel Port Left and Common
Port Right drops and adds wavelength traffic from Channel Port Right.
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
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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/AD module requires no external power, however, if management is
required, 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/AD module and the attached device. It is important to ensure
that the wavelength of the CWDM/AD matches the wavelength of the attached
device. Connect both 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/AD modules (this connection may be made through fiber
patch panels since the modules may not be co-located) or CWDM/X module.
Make sure the Left/Right designation is followed.
NOTE: For proper installation, a network diagram indicating port designations is
recommended.
NOTE: The iConverter CWDM/AD 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/AD modules are passive devices that require no external power.
Attenuation (signal loss) of less than 1.9dB will be realized through each port on
the module (see the CWDM/AD Data Sheet for exact attenuation specifications
for model used). 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
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