AWR1843AOPEVM: EIRP Power measurement

Hello,

May I ask one more question? 

I can also use mmWave Studio without DCA1000EVM. 

Please let me know example of mmWave Studio setting for CW (Continuous transmission) mode of AWR1843AOP.

Please advise. 

Best regards, 

Shoko 

Hello,

In mmwave studio there is a continuous stream tab. You can use this to enable a CW.

Attached is an example lua script which enables a 77GHz CW. You can modify this as needed. 

AWR18xx_77GHz_CW_profile.lua

Regards,

Adrian

Hello Adrian, 

Thank you for your response. I understand mmWaveStudio setting for CW mode.

I have the additional questions about it. 

1) Is DCA1000 necessary to operate mmwave studio? I would like to work mmWaveStudio using ONLY AWR1843AOPEVM. 

 So, your script occured an error on SPI connection. 

2) Does "continuous stream mode" work in mmWave SDK firmware? 

 If yes, please let me know an example of Configuration command of "continuous stream mode" in mmWave SDK. 

 If no, please let me know the an example of Configuration command and source code of the firmware that continuous stream mode work on.  

3) Please let me know the source code of the following firmwares for mmWave studio. 

 C:\timmwave_studio_02_01_01_00\rf_eval_firmware\radarss\xwr18xx_radarss.bin

 C:\timmwave_studio_02_01_01_00\rf_eval_firmware\masterss\xwr18xx_masterss.bin 

4) Regarding profileCfg of mmWave SDK, when I enter "freqSlopeConst" to 0.1(MHz/usec), the transmit power decreased by about 20dB. 

 What is the cause of this? 

Please advise. 

Best regards, 

Shoko 

Hello Adrian, 

I'm waiting for your response. When can I get them?

By the way, the above Q4) is already been resolved. 

Thanks, 

Shoko 

Hello,

Sorry for the delay.

1. Yes, DCA1000 is required for using studio. DCA1000 has the FTDI which provides the PC access to the SPI signals needed for mmwave studio. There is no way to connect with studio without AWR1843AoPEVM alone.

2. No, continuous streaming is not supported in the SDK. We do have the studio CLI tool which supports it. This would allow you to enable a CW without the DCA1000 (but DCA1000 is still required if you want to capture the raw data).

User Guide (ti.com)

3. We cannot provide the source code for the firmware, this is not shared externally.

4. Can you please share what the issue was in case others encounter this?

Regards,

Adrian

Hello Adrian, 

Thank you for your response. 

1), 3) I understand. 

> 2) No, continuous streaming is not supported in the SDK. We do have the studio CLI tool which supports it.

> This would allow you to enable a CW without the DCA1000. 

--> I successed to work mmWave Studio CLI on AWR1843AOPEVM without DCA1000. 

 But I can't find CLI command of "Contstream mode" that you said on mmWave SDK user's guide or other manuals.

(Please see the image)

Please let me know CLI command or config sample of CW (Continuous transmission) mode. 

4) Please share what the issue was in case? 

--> I was using Antenna for vertical polarization not horizontal. 

Please advise. 

Regards, 

Shoko 

Hello, 

I have found the cfg file "profile_continuous_mode_xwr18xx.cfg" that seems to be Contstream mode

in radar_toolbox_2_00_00_06\\tools\\studio_cli\\src\\profiles. 

But when I run AWR1843AOP by mmWave Studio CLI using that cfg file, the following error occured. (Please see the images) 

Please let me know why the error occured. 

By the way, I have successed to run AWR1843AOP by mmWave Studio CLI using the cfg file "profile_monitor_xwr18xx.cfg". 

Also, please let me know why it isn't described "contModeCfg" command on mmWave SDK user's guide. 

Please let me know CLI command or config sample of CW (Continuous transmission) mode. 

Please advise. 

Regards, 

Shoko 

Hi,

Unfortunately the mmWave SW demo does not support CW mode

thank you

Cesar

Hello Cesar, 

What is mmWave SW demo? It's the first time I heard "mmWave SW demo". But I know "mmWave SDK demo". 

Let me ask you again. 

Please let me know how to use "contModeCfg" command or send me the manual of the command. 

Please let me know why I get an error when I run "profile_continuous_mode_xwr18xx.cfg" on mmWave Studio CLI. 

(See the in previous post.)

Please advise. 

Regards, 

Shoko 

Sorry,

I meant mmWave SDK demo.

The mmWave SDK demo does not support CW mode. You will need to use DCA1000 with Studio in order to use the CW mode

Regarding the profile "profile_continuous_mode_xwr18xx.cfg" we will need to reproduce this issue. WE will get back to you by end of the week.

Thank you
Cesar

Hello Cesar, 

Looking at past E2E sites, I think the previous mmWave SDK demo supported "contModeCfg". (Please see the image)

However, it seems that there are few people who are able to make it work well. 

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/778422/ccs-awr1843-can-t-enable-continuous-streaming-mode-on-awr1843

https://e2e.ti.com/support/sensors-group/sensors/f/sensors-forum/778657/awr1843-about-cw-mode-setting-failed

Isn't the profile "profile_continuous_mode_xwr18xx.cfg" a remnant from that era? 

We, as radar product development engineers, need to operate CW mode in final product using AWR1843AOP (without DCA1000) for radio law certification. 

I think it is inconvenient that CW mode only works with mmWaveStudio using DCA1000. 

Could you please revise mmWave SDK demo firmware to compatible with contModeCfg? 

It is difficult for me to create firmware by myself because I don't know software well. 

Thanks, 

Shoko 

Sorry I forgot to paste the image. 

Cesar, the Studio CLI tool should support CW mode. This is not the standard SDK. This is a tool made so that customers could enable CW mode without needing to use DCA1000, as Shoko mentioned. Customers need to enable CW mode for certification testing and in most cases a production sensor will not have the connections necessary to mate with DCA1000. This is why the studio CLI tool was developed.

https://dev.ti.com/tirex/explore/node?node=A__AE-ozIYMUrJo3Go63N5zBQ__radar_toolbox__1AslXXD__1.20.00.11

Regards,

Adrian

Hello Zorah, 

Thank you for your response. 

I've done CW mode, by commenting out lvdsStreamCfg command! 

Thank you very much. 

Shoko