| 摘要 |
PURPOSE: To confirm the operation of a base site by providing a means for giving an inner channel signal route, a means for selecting encoding and decoding formats and a means for injecting a test signal. CONSTITUTION: For conducting the demodulation/decoding stages of a base station operation, a remote control means 23 moves a switch S1 to an upper position. The control means 23 selects a base station inverse data compiler 21 and a base station inverse data modulator 22. A digital test signal is injected to input 100 in such a state, it is compiled in the inverse compiler 21, it is inputted to the inverse modulator 22 and is given to a demodulator 16 and an inverse compiler 17 through the switch S1 and inner connection 102. An operator confirms the existence of a test signal which is substantially equal to the test signal given to input 100 by output 101. For testing the modulation/ encoding stages of the base station operation, the switch S1 is placed in the upper position and a forward direction data demodulator 26 and an inverse compiler 25 are selected. |
