Omnitron Systems Technology CWDM/AD user manual Channel Port Left and Right, Installation

Channel Port (Left and Right)

The Channel Ports transmit and receive signals on a specific CWDM wavelength. The Channel Ports are multiplexed on and demultiplexed from the Common Ports. As shown in Figure 3 and 4, a 1-Channel CWDM/AD supports a single channel in both directions and a 2-Channel CWDM/AD supports two channels in both directions. Each Channel Port has a Left and Right port. Data transmitted and received by Channel Port Left is aggregated on Common Port Left and data transmitted and received by Channel Port Right is aggregated on Common Port Right.

	CWDM/X					CWDM/X
1			CWDM / AD				1
2							2
		COM-L		2 - 4	COM-R
3							3
4							4

1 1

(Left) (Right)

Figure 3: 1-Channel Add/Drop MUX/DEMUX

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/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-1).

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.

When connecting the Channel Port, make sure the Left/Right designation is

followed. This will ensure the data from the Channel Port is aggregated onto the

corresponding Common Port. 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, dual fiber duplex LC cable between the Common

Ports on the CWDM/AD module(s) (this connection may be made through fiber

patch panels since the modules may not be co-located) or CWDM/X devices.

When connecting between the Common Ports on the CWDM/AD modules, it

is recommended to connect the Common Port Right (COM-R) to the Common

CWDM/X

1 2 3 4

CWDM/X

CWDM / AD

COM-L 3 - 4 COM-R

1			1
(Left)			(Right)
	2	2
	(Left)	(Right)

1 2 3 4

Port Left (COM-L) on the other CWDM/AD module. 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.

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.

Design Considerations

Figure 4: 2-Channel Add/Drop MUX/DEMUX

NOTE: For more information on the iConverter CWDM/X modules, visit Omnitron’s

website at: http://www.omnitron-systems.com

Common Port (Left and Right)

The Common Ports transmit and receive the aggregated wavelengths connected to the Channel Ports. As shown in Figures 3 and 4, 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 wavelength 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.

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 loss specification 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 loss, 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. Please consult the

iConverter data sheets for CWDM/AD signal loss specifications.

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