Hi! There is an issue with setting the LO frequency on my ADRV9026 evaluation board with the ZCU102 (ZYNQ Ultrascale+) platform.
Description of the Problem:
I am using the TES to configure the system. I set the LO frequencies as follows:
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LO1 = 875.5 MHz
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LO2 = 1842.5 MHz
However, when I start the transmission and observe the output signal on a spectrum analyzer, I do not see a clean carrier at the expected frequency. Instead, the output spectrum is highly corrupted.
Observed Behavior on Spectrum Analyzer:
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The output contains multiple spurious signals at frequencies that are multiples of the configured LO.
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Harmonics I don't need appears to have the highest power.
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The signal I need has the lowest power.


Edit Notes
Lo freq correction[edited by: StephaniusNicetElius at 7:46 AM (GMT -4) on 23 Oct 2025]