hafrse
Full Member level 3
Hello,
I have an old spectrum analyzer with outdated calibration, and need to fine adjust the offset voltage (with a multiturn pot ) of the preselector YIG filter, attached is the circuit diagram.
PSDR+ (Preselector control voltage)
PSDR- is ground from the controller
+MTXV is the supply voltage to the YTF (+26V)
The fine adjustment offset should be around U10 I think, any suggestions how to add that on this circuit?
Many thanks!
George
I have an old spectrum analyzer with outdated calibration, and need to fine adjust the offset voltage (with a multiturn pot ) of the preselector YIG filter, attached is the circuit diagram.
PSDR+ (Preselector control voltage)
PSDR- is ground from the controller
+MTXV is the supply voltage to the YTF (+26V)
The fine adjustment offset should be around U10 I think, any suggestions how to add that on this circuit?
Many thanks!
George