Yes, the numbers are accurate, since the FMT-plug in card is Low Loss, and the Max. Insertion Loss is 4.8dB. Par FS.COM sur 16.03.2018

You can use the following method to calculate the compensation length, as a reference to select the DCM you need. The link distance minus the transmission distance of the optical module is the minimum compensation distance, on this basis need to add 20km to ensure enough compensation. For example, if the transmission span is 135km, the compensation length is 75km (135km - 80km + 20km = 75km), which means you can choose a DCM whose compensating length is 80km. Par FS.COM sur 06.12.2017

Compensated length, utilized position, insertion loss and type of housing need to be comfirmed. Par FS.COM sur 16.11.2017