SIGNAL TRANSMITTER, SIGNAL SOURCE OF MULTIPLE SIGNALS, AND OUTPUT DEVICE OF PLURALITY OF LASER LIGHT PULSES

摘要

A frequency converter (192) is provided with a first direct digital synthesizer (1920) that receives a signal (REF1) of a predetermined frequency (f_master) as a clock signal, additionally receives an internal frequency setting signal (Sig1), and outputs an internal signal (REF2) of a frequency of a value based on the internal frequency setting signal (Sig1); and a second direct digital synthesizer (1940) that receives the internal signal (REF2) as a clock signal, additionally receives an output frequency setting signal (Sig2), and outputs an output signal of a frequency (f_slave(=f_master-?)) of a value based on the output frequency setting signal (Sig2). The difference between the predetermined frequency (f_master) and the frequency of the internal signal (REF2) is greater than the difference between the predetermined frequency (f_master) and the frequency of the output signal (f_slave).