Hi ad9361 experts: I read the datasheet, and I want to confirm one thing. When the tx bandwidth is 20MHz, the tx attenuation is 0dB, and the tx lo frequency is 1.44GHz, what will the output power of ad9361 be? According to my test, it` s about -20dBm. Is this normal?
Thanks a lot.
Thanks for your reply. When I open the DDS mode, and set tx attenuation to 0, the tone I got is as below:
It` s about -1.89dBm, which is not as high as the datasheet describes.
Dose there something that I miss?
Is the HW custom hardware or evaluation board.?
If custom there could be a matching issue. Have you tried measuring power at other frequencies.
May be you can calibrate your analyzer with a known good signal from signal generator for accurate power measurement.
Thanks for your reply. Yes, the HW is custom hardware. I will try your method. Thanks a lot.
I tried to use ZED Board+AD-FMCOMMS3 to measure the output power of the one cw tone of tx1, and there is a parameter called scale(dBFS) in the ADI IIO Oscilloscope application. When I set this parameter to 0, the output power of the one cw tone can attain the level as the datasheet describe. Can this parameter be set in no-os software? What is it in no-os software?
Please refer to the below posts:
Please do not post queries under answered threads as they might get ignored.