Re: sylvain/testing BTS and tx power

Thanks for quick answer,

I make TX/RX on uplink band. I make code based on prim_bts.c so I use following code for normal burst sending:

        dsp_api.db_w->d_task_ra = RACH_DSP_TASK;
        /* Open TX window */
        l1s_tx_apc_helper(arfcn);
        l1s_tx_win_ctrl(arfcn | ARFCN_UPLINK, L1_TXWIN_NB, 0, 3+timeslot);
        return 0;
}

How I can make results for 1800 band more accurate?

Best regards,
Anton

25.09.2014, 19:27, "Sylvain Munaut" <246tnt@gmail.com>:
>  Hi,
>>   I tried to use code from sylvain/testing and from sylvain/burst_ind braches to send different
bursts directly from one ms to another. On freq from GSM900 band that works fine. When I set freq in GSM1800
band I can see the same bursts, but with very small rx_level(drop to 15 from 60).
>>   I tried to change l1s.tx_power for l1s_tx_apc_helper, but that does not help. Perhaps dsp patch
block tx power configuration or something else? Any idea how to fix that?
>  There is nothing band specific in those patches.
>
>  The frequency duplex separation in 1800 is larger, meaning we operate
>  the PLL much more out of spec in 1800 which might yield the result
>  you're seeing.
>
>  Are you TXing in the DL band or RXing in the UL band ?
>
>  Cheers,
>
>      Sylvain