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LO Leakage

i have configured the AD9373 to 2GHz Frequency.

programed the TX/RX/Sniffer LOs. and configured as internal LO.

once the Device programed the LO leakage at the port is -36dBm.

i have gone to the Transmitter page on GUI and found when i change the attenuation to 10dB.

the Output noise goes down, but the LO power increased by 10dB.


do we need to calibrate the path every time we sett the attenuator?? i dint expected that the TX attenuator will change the LO leakage in opposite direction.


Please clarify............

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