Center frequency deviation specifications for WDM boards


The center wavelength deviation specifications of WDM-side modules are as follows: The frequency offset is ±10 GHz for fixed wavelengths and ±5 GHz for tunable wavelengths. For details about optical module specifications, see the Product Documentation.

Other related questions:
Excessively large wavelength deviation reported by the WMU boards of OSN 6800
Question: The LSX boards with adjustable DRZ reported the WAVE_LEN_OVER alarm, whereas the ones with NRZ fixed wavelengths did not report the alarm. When an optical spectrum analyzer was used for wavelength testing, the wavelength deviations are within the allowed range. No excessively large wavelength deviation is detected. (OSN 6800 NE version, NMS version T2000V2R6) Root cause: None Answer. The wavelengths from the light source of the DRZ adjustable optical modules are controlled by the core temperature without human interference. Wavelength deviation adjustment should not be performed by the software to such modules. V100R003C02B028 does not monitor adjustable optical modules for wavelength deviation, and the deviation threshold was changed from 0.5 GHz to 5 GHz.

Whether the TOM board has wavelength or frequency limitations
When functioning as a pure tributary board, the TOM board does not have any frequency limitation and it supports all broad-spectrum optical signals. When the TOM board functions as an OTU board, its WDM-side ports have frequency limitations.

WDM protection schemes supported by the LEM24 board
The LEM24 board supports the following protection schemes: client 1+1, intra-board 1+1 (on the OLP or DCP board), and OWSP. Note: The LEM24 board supports client 1+1 protection only when EPL services are configured (between PORT and VCTRUNK ports).

Methods for determining whether the frequency is 195.4 or 195.5 on an SSE3MR201M01 board
The numbers 9540 and 9550 on the barcodes of the board indicate that the frequencies are 195.4 and 195.5.

Types and specifications of OA boards for WDM networks
Fiber amplifiers or OA boards amplify optical signal power to extend the signal transmission distance. The product documentation has described the types and specifications for fiber amplifier boards. For details, see the related topics in the product documentation.

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