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FW 1.1 and range decrease

Oliver70185
Intellectual 280 points

Hello,

I just flashed an FW 1.1 image.

First of all what is great: 4 slaves are supported and it works!!

Sadly we lost half of our range. No matter if we use 1 or up to 4 slaves in our network, the range decreases a lot.

Is that what you expected (because every slave has a smaller time slot) or do you think range can be extended in next FW releases?

Maybe I can improve it by changing settings in the PPWC, what I actually did is to set the Streaming Format to SLAC as it is now supported.

Regards,

Oliver

  • 0
    TI__Expert 6825 points

    Hey Oliver,

    There is a trade-off between the number of slaves and the robustness of the network. However, what you are describing seems to be large degradation of range.,, How are you testing the range? What latency are you using? If you are configuring the Master to only support 1 slave with FW 1.1. Do get the same range as you had before?

     

    -Per

  • 0 in reply to Per H
    Intellectual 280 points

    Hey Per,

     

    thanks for your immediate reply!

    Latency is 960.

    Per H said:
    How are you testing the range?

    Just by walking around and comparing the distance. I'm going to measure the field stregth, but I dont think that it decreased.

    Per H said:
    If you are configuring the Master to only support 1 slave with FW 1.1

    The range is wider than with more slaves but it is still lesser than before (with FW1.05).

     

    Regards,

    Oliver

  • 0 in reply to Oliver70185
    TI__Expert 6825 points

    Hey Oliver,

    Sorry for the late reply.

    It should not have less range with the same set-up for FW1.10 compared to FW1.0.5. Are you sure you are comparing "apples-to-apples"?? ;-)

    To increase the robustness of the network you can increase the latency. It will give an even larger impact when having 4 slavs compared to 1 slave.

    -P

  • 0 in reply to Per H
    Intellectual 280 points

    Hi,

    yes, apples compared to apples ;-)

    unfortunately, latency does not have a big benefit. We also realized this at FW 1.0.x.  A latency bigger than 20-30ms is not acceptable for our application.

    Per H said:
    It should not have less range with the same set-up for FW1.10 compared to FW1.0.5.

    Unfortunately it has.

    Are you planing to increase the robustness by any FW upgrades or are the current results the best I can expect.

    Regards,

    Oliver

  • 0 in reply to Oliver70185
    TI__Expert 6825 points

    Oliver,

    Can you post the 2 different PPW Configurator projects you are using with the FW1.1.0? i.e, with the master accepting 1 slave and the master accepting 4 slave? I know the difference will be very small but J I still need it ;-)

    Cheers

    -P