LE50/LE70 round trip time

8 thoughts on “LE50/LE70 round trip time

  1. Hello,

    can you tell me the typical round trip time in address secured mode?

    • Serial Baud Rate: 19200
    • Radio Baud Rate: 4800
    • Time until automatic ack is received (Bit Ret = 0 in S255): 130ms
    • Round Trip Time until reply is received : 290ms

    290ms seems to be quite long. Can you tell me how many bytes overhead the module itself adds to a message?



    1. Hi

      usually on air, module send:


      4 Bytes preamble

      3 bytes sync

      1 byte info/header

      x bytes data + 3byte padding (in any case minimun tot 8byte)

      Please note also:

      When serial baud  rate  is very  high  compared to  radio data  rate,  all  data  are  stored in  a buffer of 256 bytes. To not risk a buffer overflow and data loss, it is advised to enable to serial flow control in register S216.

  2. Dear Team,

    how to utilize or how to load/update the .tlt software file of LE70 868 module ?

    Thanks and Regards


  3. Hello Team,

    I’m S. Monish working as a FAE in Rabyte Electronics.

    I’m using SR Manager Tool , and whenever I’m starting this tool I’m getting the below error [UNHANDLED EXCEPTION ERROR ].

    Like the same , our customer is using SiRF live , they are also getting these types of error.

    Can I know the reason, and solution to fix it

      1. Version Number : 2G.00.09.RC3.

        I’m not getting that RUN as ADministrator Option on RSmanager Tool.

        Just , FYI, But at the same time I’m getting that option on TATC tool.

        1. So you don’t get “Runs as administrator” in teh right-click menu?

          Can you try on another PC please?