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Using TMDSPLCKIT-V3 to communicate in the CENELEC B, C, or D bands

Alec Mercer
Prodigy 50 points

Other Parts Discussed in Thread: AFE031

I have recently purchased the TMDSPLCKIT-V3 C2000 Power Line Modem Developer's Kit and have the G3 firmware installed in the modems. I was wondering if it is possible to change the communication band from CENELEC A to CENELEC B, C, or D using the Zero Configuration GUI? Would the modem firmware need to be changed in order to support this? Thanks in advance for your assistance.

  • 0
    Guru 20525 points

    Hi!

    Unfortunately it is impossible. The preinstalled G3 firmware of TMDSPLCKIT-V3 supports GENELEC A (35.9-90.6 KHz) only.

    Regards,

    Igor

  • 0 in reply to Igor Gorbachev
    Prodigy 50 points

    Thank you for the rapid reply Igor. Do you know if the modem hardware is capable of CENELEC B, C, or D communication (with the appropriate firmware flashed into the modem)? It appears that the analog front-end (AFE031) has this capability. Thanks again.

    Alec

  • 0 in reply to Alec Mercer
    Guru 20525 points

    Hi!

    Yes. Hardware is capable. But if you want to try to work at B,C,D -bands then you need to create own firmware based on G3 API library provided by TI. In this case you will not might use "Zero Config" application.

    Regards,

    Igor

  • 0 in reply to Igor Gorbachev
    Prodigy 50 points

    OK. Thanks again for all of your help.

    Regards,

    Alec

  • 0 in reply to Alec Mercer
    Guru 20525 points

    Hi Alec!

    If you will have some questions about PLC technology or you will want to share the PLC development experience then welcome to  http://e2e.ti.com/support/microcontrollers/c2000/f/171/t/254032.aspx.

    Regards,

    Igor

  • 0 in reply to Igor Gorbachev
    Intellectual 310 points

    Hi Igor,

    I see with the G3 Firmware G3_SDK_Package_V7316, that it is possible to configure the maks: Cenelec B, Cenelec BC and Cenelec BCD. This should mean that working in the bands Cenelec B, C and D is possible.

    Nevertheless when I compare their spectrum they look quite the same. This is weird since if I analyze the masks, they should count with 16, 26 and 32 sub-carriers.

    I see also that the fourth degree filter in the receiver is fixed. And apparently it is only for the Cenelec A band. This can affect the communication in the other bands. I tested the masks, and the communication is only possible when I use the Cenelec B mask. Nevertheless the sub-carriers are attenuated as the frequency increases.

    1. It is possible with this Firmware, make the TMDSPLCKIT-V3 operate in the Cenelec B, BC and BCD bands?

    2. Must I make a particular change in the Hardware of the development PLC kit for this purpose?

    Thanks in advance!!!!

    Diego Ballen Cantor

  • 0 in reply to Diego Ballen Cantor
    Guru 20525 points

    Hi, Diego.

    Well, if I understand your issue right, then in fact, as far as I know,  the original TI fimware, wich is preinstalled into KIT, is intended for CenelecA usually. Nonetheless the KIT's hardware (mainly the output/input PLC transformer) allows to use other frequency bands into range ~1.5 kHz~500 kHz. An input inductor & capacitor are not matter almost excluding FCC band (~500 kHz). For FCC the added hardware changes are required (you can request to TI PLC branch for special ordering). Also you can try the G3 phy example project for tuning mask "manually" with G3 PHY API. The PRIME PHY API doesn't allow to do it.

    Regards,

    Igor