Change Output Power for Amplifier Testing

[drjyeh]

With a 20dB amplifier, the output power is too high for the NanoVNA V2 to display correctly. The ADF4350 has ability to change output power to 5, 2, -1, -4 depending on DB7 DB6 of R4. The code hard codes the following for the rx and tx adf4350_rx.rfPower = 0b00; adf4350_tx.rfPower = 0b11; The VNA_QT app has power setting but currently does nothing.

Can user selectable tx output power be implemented, even if it is only available with ADF4350 operation?

[wutje]

I made a version that (sort of) supports this. Can you please checkout https://github.com/wutje/NanoVNA-V2-firmware/releases/tag/cw_mode_fix-beta.5 and see if that helps? It is still work-in-progress.

[drjyeh]

Hi,

I downloaded the FW but the menu is too small and touching the screen where the menu is does not activate the menu.

Thanks, James

James H-J Yeh, Ph.D. Associate Professor, Engineering and Computer Science Azusa Pacific University

On Sep 9, 2020, at 1:49 PM, Wouter notifications@github.com wrote:

I made a version that (sort of) supports this. Can you please checkout https://github.com/wutje/NanoVNA-V2-firmware/releases/tag/cw_mode_fix-beta.5 https://github.com/wutje/NanoVNA-V2-firmware/releases/tag/cw_mode_fix-beta.5 and see if that helps? It is still work-in-progress.

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[wutje]

I have no problem touching the screen. Perhaps your calibration is corrupt? The buttons also work for me, bit clumsy but they work.

[drjyeh]

Hi,

On the the official SW release the buttons work properly. I noticed in this release the buttons are smaller and touching them does not work. Is there a separate calibration per SW version?

Thanks, James

James H-J Yeh, Ph.D. Associate Professor, Engineering and Computer Science Azusa Pacific University

On Sep 12, 2020, at 5:22 AM, Wouter notifications@github.com wrote:

I have no problem touching the screen. Perhaps your calibration is corrupt? The buttons also work for me, bit clumsy but they work.

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[wutje]

The official test release https://github.com/nanovna/NanoVNA-V2-firmware/releases/tag/20200916 added this feature in a different way.