Remote unit, remote system, extender, and automatic adjusting method

摘要

A remote unit that is connected to a server with a cable, and receives and displays an image signal transmitted from the server, the remote unit includes a receiving portion that receives a signal transmitted via the cable and adjusts a gain of the signal, a voltage detection portion that receives an automatic adjusting signal for adjusting the gain and detects a received voltage of the signal, and a control portion that obtains a length of the cable with the received voltage and adjusts the gain of the receiving portion with the length obtained.