Liquid ejecting device

A liquid ejecting device comprising:

• an ejection unit that has a nozzle, a liquid chamber connected to the nozzle and having a variable volume, and a liquid communication pipe communicating the nozzle with the liquid chamber;
• a capacitive load that extends by a driving signal application and changes a volume of the liquid chamber;
• and
• a capacitive load driving circuit that drives the capacitive load by the driving signal application,
• wherein a liquid flowing into the liquid chamber is ejected from the nozzle by changing the volume of the liquid chamber, and
• wherein the capacitive load driving circuit includes
• a driving waveform signal generating circuit that generates a driving waveform signal that is a driving signal reference,
• a modulation circuit that performs pulse modulation on the driving waveform signal to generate a modulation signal,
• a digital power amplifier that amplifies power of the modulation signal to generate a power amplification modulation signal in the form of a pulse wave,
• a low pass filter that smoothes the power amplification modulation signal in the pulse wave to generate the driving signal,
• a connection cable that connects the low pass filter to the capacitive load and is provided such that at least one of the low pass filter and the capacitive load is detachable,
• a connection line information acquiring unit that acquires connection line information associated with the connection cable, and
• a carrier frequency changing unit that changes a carrier frequency when the modulation circuit performs the pulse modulation on the driving waveform signal, on the basis of the connection line information.