DCA1000EVM: Could you help with the parameters?

Peijun Zhao

Part Number: DCA1000EVM
Other Parts Discussed in Thread: IWR6843

Hello,

I was trying to use DCA1000EVM and IWR6843 to get some data. I used mmwave sensing estimator and got a set of parameters:

However, there's an error saying that

Status: Failed, Error Type: RAMP END FREQUENCY IS NOT WITHIN VCO RANGE

Could you please help me with fixing the parameters? My target is to get the maximum range resolution.

Thank you very much!

Best Regards,

over 5 years ago

0 Akash Gondalia over 5 years ago

TI__Guru 50240 points

Hi Peijun,

I've asked an expert to look into this and we should have an answer for you in the next few days.

Cheers,

Akash

0 zigang Yang over 5 years ago

TI__Mastermind 40705 points

Hi, PJ:

It looks like the total bandwidth is too close to the 4000MHz limitation. You can try to reduce the frequency slope a little bit (from 78.214) to see whether you can get it pass.

Best,

Zigang

0 Peijun Zhao over 5 years ago in reply to zigang Yang

Intellectual 310 points

Dear Zigang,

I found that if the start frequency is set to 60.00 GHz, the bandwidth could only be a few hundred MHz. If the start frequency is set to 60.25 GHz, then the end frequency could be up to 64 GHz.

The following parameter could work:

Thank you very much!

Best,

Sensors

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DCA1000EVM: Could you help with the parameters?