| 摘要 |
PURPOSE:To shorten the data check time after test by detecting abnormal data from tested data, which is constituted by parallel signals, and displaying this abnormal data and stopping the operation of a tape reader to report abnormal data to the operator. CONSTITUTION:For test of a tape recorder, etc., switch 23 is turned off to start a reader, and test data from input terminal 1 is applied to line converters 8 and 9 which are operated as decoders, and data of the mark of a prescribed bit is detected, and outputs of NOR gates 10 and 11 are made H-level by the detected prescribed bit. When the H-level is outputted in one of them, strobe signal 31 of AND gate 13 is made L-level, and the reader is stopped and detection is reported to the operator by the signal of output 25 of the Q' terminal of FF14. Further, the output of NAND gate 15 is written in latch circuit 3 where test data from input terminal 1 is inputted, and light emission diode 5 is lit by the output of circuit 3 to display abnormal data. |
