With the help of the external RF signal generator

Hello.

I just want to ask how can I remove the frequency shift if I use an external RF signal generator (instead of the RF PXI-5652 signal generator module). I understand that in the case using the OR to generate RF signals, frequency shift is deleted by setting the same source of reference for the transmitter and the receiver clock (placing the clock source of reference to PXI_CLK of the façade of generation VI and VI of the acquisition).

Thank you very much.

Hi Betty,.

In this case, no changes are needed, such as modules OR still use background clock basket PXI as the ref. clock source If you are still having a frequency shift, you probably need to configure sig gen to lock a clock external REF. Usually, just make the connection of the signal is not enough - you must also indicate the sig gen to use the signal connected to the input clock ref. Terminal

If you use the sig gen as clock source master Réf, connecting the 10 MHz of the gen of GIS at the BNC 10 MHz IN on the back of the PXI chassis replaces the clock native from the newly connected with the PXI chassis backplane, and analyzers are still using the clock background basket PXI as the source clock Ref (no change to the SW settings).

Kind regards

Andy Hinde

RF systems engineer

National Instruments

Tags: NI Products

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