Figure 5 The basic block diagram of a Lock-In Amplifier. The various function blocks may be: analog, digital or a combination of both. The first synchronous demodulators were analog and were built ...

Lock-in amplifiers were invented in the 1930s [1 ... Some of the functionality is intuitively displayed in form of block diagrams. Figure 16. Block diagram showing the Zurich Instruments UHFLI's main ...