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Frequency modulation (FM) rate as LO output to lock-in amplifier

Question asked by kunnykun on Aug 22, 2012
Latest reply on Aug 23, 2012 by kunnykun
I want to set the FM rate of a carrier signal on the N5183A using its internal source and use the FM output at the back to provide a lock in amplifier with a Reference In signal which equals the FM rate set. But the FM output on the back does not appear to produce the LO signal.. any ideas?