Softrock Ensemble VHF RX II - 9/10 (QCG and LO test)

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This video shows an analyse of QCG Clock Signal and Local Oscillator.
To do so, you must have available a dual trace scope and probe them the two test points (Pin 6 and 14 of U05).
If you do that you should get a waveform similar to the showed in this video.

Remember that this stage divides the local oscillator output by 4 and shifts the phase of the dividend signals such that they are now one-fourth the LO frequency and 90 degrees separated in phase (i.e., in quadrature).
See .

The final test shown in this video illustrates the output signal of the local oscillator (LO) and compares it with the one of the output signals of the QCG.