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Original question:

LMX2820: Certain frequencies do not lock when using Instant Calibration

LMX2820: About Instant calibration

APPLO ZHANG
Intellectual 390 points
Part Number: LMX2820

Tool/software:

Hi，

As shown in the figure below, when doing instant calibration, does the output frequency of STEP 4 have to be 5.65GHz? 
Is 18.4GHz okay?

Thanks！