MCA functions

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The MCA board is an optical spectrum analyzer board that is used to analyze the optical spectrum of optical signals.
The MCA board analyzes the optical spectrum of the input optical signals, and transmits the analyzed and converted data to the control and communication module through the data interface. The control and communication module then reports the data to the SCC board and the NMS. The NMS then displays the final spectrum analysis results.

Other related questions:
MCA functions
The MCA board is an optical spectrum analyzer board that is used to analyze the optical spectrum of optical signals. The MCA board analyzes the optical spectrum of the input optical signals, and transmits the analyzed and converted data to the control and communication module through the data interface. The control and communication module then reports the data to the SCC board and the NMS. The NMS then displays the final spectrum analysis results.

What is the function of the machine check architecture (MCA) in the RH1288 V3
This feature provides software recovery for uncorrectable errors, which improves system availability.

Functions of spectrum analyzer units MCA and WMU on OSN 6800
Question: When an OSN 6800 device is used to construct a new network, two spectrum analysis units are configured: multi-channel spectrum analyzer unit (MCA) and wavelength monitoring unit (WMU). The functions of these two boards seem to be overlapped. How do we understand these functions? Answer: 1. MCA boards are classified into MCA4 and MCA8, which provide four and eight ports respectively. An MCA board is mainly used to detect channel optical power, center wavelengths, OSNR, and the number of wavelengths on an optical path. Similar to an optical spectrum analyzer, an MCA board reports the detected information to the system control board for fault diagnosis and monitoring. It can also be used together with other boards to achieve the automatic power equilibrium (APE) function. 2. A WMU board works with the system control board to lock wavelengths and monitor the transmit-end OTU wavelength deviation. The monitoring results are transmitted to the system control board through mailbox. Then, based on the wavelength configuration table, the system control board determines whether wavelengths need to be adjusted. If the wavelengths need to be adjusted, the system control board transmits the adjustment information to the OTU board to complete the wavelength deviation adjustment. 3. An MCA board can be configured to monitor the transmit end and receive end.4. A WMU board can be configured only at the transmit end, because it is used to adjust wavelength deviation of the OTU board at the local station with the system control board. 5. An MCA board is easy to maintain. A WMU board provides functions. To use OTU boards with 100 GHz spacing in an 80-channel system in the C band, WMU boards need to be configured to lock the working wavelength of OTU boards. If the working length stability of OTU boards with 100 GHz spacing cannot meet the requirements of an 80-channel system, WMU boards can be used. Suggestion and conclusion: An MCA board is used to monitor optical signals. A WMU board is used to monitor optical signals and lock and control the OTU wavelength with the system control board.

Function comparison of optical spectrum analyzer units MCA and WMU on OSN 6800
1. MCA boards are classified into MCA4 and MCA8, which provide four and eight ports respectively. An MCA board is mainly used to detect channel optical power, center wavelengths, optical signal-to-noise ratio (OSNR), and the number of wavelengths on an optical path. Similar to an optical spectrum analyzer, an MCA board reports the detected information to the system control board for fault diagnosis and monitoring. In addition, an MCA board can be used together with other boards to implement the automatic power equilibrium (APE) function. 2. The core function of a WMU board is to work with the system control board to lock wavelengths and monitor the wavelength offset of the transmit-end OTU board. The monitoring information is sent to the system control board by email. Then the system control board determines whether to adjust the wavelengths based on the wavelength configuration table. If wavelength adjustment is required, the system control board sends the adjustment information to the OTU board and then adjusts the wavelength offset. 3. An MCA board can monitor both the transmit end and receive end. 4. A WMU board can be configured only at the transmit end because it must work with the system control board at the local site to adjust the wavelength offset of the OTU board at the local site. 5. An MCA board mainly facilitates maintenance and a WMU board is used for function implementation. If an OTU board with 100 GHz channel spacing is used to implement a C-band 80-wavelength system, a WMU board needs to be configured to lock the operating wavelength of the OTU board. This is because the OTU board with 100 GHz channel spacing cannot satisfy the stability requirements of an 80-wavelength system, but the WMU board can help stabilize the wavelength performance.

Common causes for abnormal OSNR scanning results of the MCA board after the OD function is enabled
1. The fiber type and length of the FIU board are not set. 2. The optical performance monitoring function is not enabled for the MCA board. 3. The OMS trail is incomplete. When the OD function is enabled, ensure that the OMS trail is complete. If a logical fiber connection is deleted from the OMS trail after the OD function is enabled, the OD function will become abnormal. As a result, no OSNR is displayed for the MCA board. In this scenario, the logical fiber connection must be added again, the OMS trail must be searched out, and the OD function must be enabled. 4. The logical fiber connection of the MON port on the MCA board is falsely deleted. 5. The NE where the MCA board resides and the OTM site are not in the same ECC subnet. 6. The MCA board is in an early version. TN11MCA401 and TN11MCA801 do not support the OD function, and TN11MCA402 and TN11MCA802 also have requirements on the module firmware. If the firmware versions for the TN11MCA402 and TN11MCA802 boards are earlier than the earliest version supported, the firmware on these boards cannot be upgraded. You need to replace the TN11MCA402 and TN11MCA802 boards before using the OD function. You can run the :cfg-get-modverinfo:Bid command to query the module version.

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