| 摘要 |
PURPOSE:To realize a compact and light-weight structure with a simple constitution as well as to increase the accuracy for the decision value by starting the inner timing circuit with the start signal and via the decision reference pulse generation part and then giving the rise to the pulse of the reference value necessary for decision after the fixed fiming. CONSTITUTION:The pulse sent out through dialing 10 of ''O'' by subscriber SUB is received for shaping at dial pulse reception/shaping part DPR and then counted by pulse counter CRT. In other words, the dial start signals are sent to dial decision reference pulse generation part DPS and tested pulse generation part TP, and the stop signal is sent to part TP by the rise of the 10th break pulse after end of dialing to generate the pulse showing the state of under dialing. On the other hand, part DSP starts the timing circuit provided inside with the start signal and then gives the rise to the pulse of the reference value necessary for dicision after the fixed timing. As a result, a compact and light-weight structure is obtained with a simple constitution, at the same time increasing the accuracy for the decision value. |
