AWRL6432: The Tx back off setting in factoryCalibCfg doesn't work in ES1.0 ATE calibration device

James Austrial

Expert 4010 points

Part Number: AWRL6432
Other Parts Discussed in Thread: MMWAVE-L-SDK,

Hi,

Customer has two kinds of device:

AWRL6432 ES1.0, RF is not trimmed and the ATE calibration image is necessary. Software is mmWave-L-SDK 5.3.0.2

AWRL6432 ES2.0, RTM device. Software is mmWave-L-SDK 5.4.0.1

First, using "factoryCalibCfg 1 0 40 3 0x1ff000" to do calibration with Tx back off 3db and save the calibration result into flash

After that, reboot the device and using "factoryCalibCfg 0 1 40 3 0x1ff000" to load the calibration from flash.

We found the AWRL6432 ES2.0, RTM device is working fine, the Tx back off 3db is indeed there.

However, the same procedure, the Tx back off doesn't work on AWRL6432 ES1.0 ATE calibration image device.

We're not pretty sure why this symptom happens. Do you have any idea?

over 1 year ago

0 Kundan Somala over 1 year ago

TI__Expert 3730 points

Hi James,

Can you please confirm how customer is verifying the backoff? Also, are they using same code as TI or did they make any changes in the code?

Thanks,
Kundan

0 Ann Lu over 1 year ago

Prodigy 60 points

Hi,

We are based on 60GHz Spectrum to verify if the backoff is work or not.

0 Ann Lu over 1 year ago in reply to Ann Lu

Prodigy 60 points

We use the same code as TI as what we do at 5.4.0.1 & it is work. But it is fail at 5.3.0.2. May I know if this backoff function will be impact as we need upload calibration_example.release.appimage at ES1.0 in advance?

0 Kundan Somala over 1 year ago in reply to Ann Lu

TI__Expert 3730 points

Hi Ann,
Thanks for confirming that you are doing spectrum analyzer-based measurements.
Is it observed for only 3dB backoff? Can you please provide the Tx power monitor report for that particular sensor?

Thanks,
Kundan

0 Kundan Somala over 1 year ago in reply to Kundan Somala

TI__Expert 3730 points

Hi Ann,

There are known PD calibration issues in the ES1.0 silicon. These are captured in the respective DFP release notes.

Thanks,
Kundan

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AWRL6432: The Tx back off setting in factoryCalibCfg doesn't work in ES1.0 ATE calibration device