| 摘要 |
PURPOSE:To attain a normal SQE test in a multi-channel transceiver by permitting the 'OR' signal of an output to control the passage of a collision signal and an SQE signal. CONSTITUTION:While transmission stations transmit data and while one pulse is continuously inputted in an SQE signal detection circuits 81-8n corresponding to the transmission stations 61-6n, an 'AND' signal output means is in a state where it permits the collision signal and the SQE signal to pass through. If data collision occurs, the collision signal is given to the transmission stations 61-6n and the SQE signal is given from the 'AND' signal output means to the transmission stations 61-6n. In the SQE signal detection circuits 81-8n respectively corresponding to stations except for the transmission stations, the 'AND' signal output means is in the state where it permits the collision signal to pass through while it receives data from the transmission stations 61-6n. Thus, the SQE signal which is outputted after the transmission stations 61-6n transmit data is not given to the station except for the transmission stations.
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