Figure 1-77. Weinschel, Model 4311B, Automatic Phase Locking Synchronizer.
Weinschel, Model 4311B, Automatic Phase Locking Synchronizer (fig. 1-77), provides the necessary control and interface
functions configuring the model 4312A/ <16P, multiband microwave system. Model 4311B supplies a precise digitally
controlled source of RF signals with spectral purity, low noise content, high stability, and resolution down to I MHz.
Depending on the accessories used, the system can supply either unmodulated or modulated signals from 0.01 to 18 GHz.
This instrument can be operated using internal or external reference frequencies.