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AWR1642: TX/RX Channel Setting in Continuous Mode

Michael JM Zhang
Prodigy 95 points
Part Number: AWR1642

In AWR1642 continuous mode, we can select several kinds of TX/RX Channel combination.

From TI docs, I find the settings as below.

TX channel can be selected by 0/1/2/3. RX channel can be selected by 0-15.

From SW code example, I noticed that you only define Macro as below.

0 is not a selection for TX/RX channel.


Then we test power using SA .

TX channel setting 0/1 is about 25dBm, while setting 2/3 is about 31dBm.

So it seems we can make some guess from test result.

1. We can’t disable or enable 2TX channel at the same time. 0/3 is not a correct selection.

2. TX2 is 6dB larger than TX1.

 

So I get 3 kinds of conclusions from 3 different ways.

Which one is correct? And why TX2 power is 6dB larger than TX1?

Thank you.

  • 0
    TI__Guru 69960 points

    Hi,

    MACRO are given here to enable Tx/Rx. If you need to disable any Tx then don't set that bit in the parameter while invoking rlSetChannelCOnfig API.

    Each of Tx can be disable/enable individually using the above said API, set/reset the specific BIT [rlChanCfg_t->txChannelEn].

    And for CW mode device will emit from all the Tx which are enabled from channelCOnfig API.

    So please try this experiment and rightly enable/disable Tx and then check for power difference.

    Regards,

    Jitendra