| 摘要 |
PURPOSE: An apparatus for detecting a signal of a digital TV is provided to test receiving performance to set an accurate signal receiving direction. CONSTITUTION: A signal input to an antenna(1) is applied to an RF input port(2-1) of a receiver measurement unit. A digital TV tuner(2-2) selects a channel and inputs a signal corresponding to the selected channel to a demodulator(2-4) through a SAW filter(2-3). The demodulator removes interference or noise from the input signal, which is generated during a channel transmission process, and outputs the signal to a decoder(2-6). The decoder decodes the signal input thereto. A central processing unit(2-7) checks the decoding result and displays the result on an LCD(Liquid Crystal Display)(2-8). When the signal is decoded without having an error, the antenna is fixed. |
