IWR1843: Ramp start timing

user4825004

Intellectual 590 points

Part Number: IWR1843

Hello,
We use the IWR1843.

Which 'TX START TIME' is right?

No.1

No.2

Please give me the information.
Best Regards,
Sekiguchi

over 5 years ago

0 CHETHAN KUMAR Y.B. over 5 years ago

TI__Mastermind 25835 points

Hello Sekiguchi-san,

In the above thread, image is not visible could you please re-attach?

Thanks and regards,

CHETHAN KUMAR Y.B.

0 user4825004 over 5 years ago in reply to CHETHAN KUMAR Y.B.

Intellectual 590 points

I tried to re-attach.

image No.1

image No.2

0 user4825004 over 5 years ago in reply to user4825004

Intellectual 590 points

image No.1

0 CHETHAN KUMAR Y.B. over 5 years ago in reply to user4825004

TI__Mastermind 25835 points

Sekiguchi-san,

Thank you for re-attaching the images. Arguably both the images have correct Tx start time is correct.

0 CHETHAN KUMAR Y.B. over 5 years ago in reply to CHETHAN KUMAR Y.B.

TI__Mastermind 25835 points

Sekiguchi-san,

In the profile configuraiton API Tx start time allowed to program for both positive values as well as negative values with resolution of 10ns.

As shown below.

This is mainly:

If the Synthesizer values have not been settled to desired value (depending upon various chirp configurations), then by using Tx start time it could be prevented going into air by adjusting the Tx start time by the desired amount either on the positive side or on the negative side referenced from at the knee of the ramp.

Thanks and regards,

CHETHAN KUMAR Y.B.

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IWR1843: Ramp start timing