| 摘要 |
PURPOSE:To eliminate troublesome operation for measuring the electric characteristics, etc., of an equipment, by stopping a battery saving function when a specific preamble signal from a transmission side is received. CONSTITUTION:Once receiving a preamble signal, a receiver in an intermittent reception state resets battery saving operation temporarily and receives an address signal sent successively. Simultaneously, when the pattern of a specific preamble signal is detected by a shift register 8, inverters 12-15, and an AND circuit 16, an FF17 is set. In response to the output of the FF17, a power source 22 powers up a radio part 2 and a waveform shaping circuit 3 through an NOR circuit 18 and a switching transistor 21. Consequently, a receiver fitted to a panel, etc., eliminates such troublesome operation that every time the electric characteristics of the equipment are to be measured, the receiver is detached from the panel and a strap, etc., is attached. |
