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  1. #1

    Minimum range requirements for TL-SM321A and TL-SM321B modules

    Region : Australia

    Model : TL-SM321A

    Hardware Version : V1

    Firmware Version :

    ISP :

    Hi all, I am looking for some information that is not provided. These SFP modules can support distances over 10KM but I am installing a very short range link. Is there a minimum distance applicable to these modules before attenuation is required or could they be directly connected via a short fibre patch cord without receiver damage? I am constructing a link between two buildings which will total approximately 100 meters but I have not been able to find the transmit side output level and receiver specs to ensure I do not damage the modules. Obviously with two patches and 100M of fibre I will be seeing around 2db loss at most over the link.

  2. #2
    I have TL-SM321B SFP. On TP-Link website distance of this module is 10km. But when it plug on mikrotik, SFP status on Mikrotik is: "Link length 20.000 m."

    Whether it has TL-SM321B models with differentially Max. Cable Length?

    Sorry for my bad English.

    Thanks a lot.

  3. #3
    Members Mr.J is on a distinguished road
    Join Date
    Aug 2016
    Hi Link
    I don't understand your means about the "Link Length 20.000", is that shows in the Mikrotik?
    The SM321B can support at most 10km cable length. And as I known, there is no another one with different Max Cable Length.

  4. #4
    [h=2]Thank you for the information. Best regards.[/h]

  5. #5
    thank you for sharing


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