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Re: HP Agilent 8753ES VNA repair [Help]


 

My VCO frequency is wrong is should be 39.840 MHz. 39.840 MHz divide by 40 is 996 KHz.
I have a VCO frequency of 39.100 MHz. Divide by 40 : 977 KHz. -> The 2sd LO frequency I have. ?
?
Can I manualy tune this VCO or does it depend of another part of the circuit ? It this problem related with the LO2 TP14 signal ?

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