MULTIPLE SIGNAL SEPARATING CIRCUIT, AND TRANSMISSION ERROR MEASUREMENT CIRCUIT AND TRANSMISSION ERROR MEASURING METHOD THEREFOR

摘要

PROBLEM TO BE SOLVED: To provide a transmission error measurement circuit which quickly finishes a pull-in operation before measurement and executes the measurement of an object to be measured, in a shorter time in measurement an error that occurs at the time of transmitting signal on a transmission line, etc. ;SOLUTION: In this bit error measurement circuit 100, when a selective control signal 1c to the effect that a pull in operation is performed and an operation notification signal 3c are inputted, a selection circuit 30 executes switching, a test signal 40a obtained by a multiplexing address value 10a of an address counter 10 is outputted to an object 2 to be measured in a transmitter 1, and the signal 40a that is the address value of the address counter 10 is separated to produce a separation signal 50a, a data rearranging circuit 60 performs a pull-in operation by executing a rearrangement, so that the least significant bit of the signal 50a matches the least significant bit in the value 10a, and a count is started with a value following the address value outputted last as the initial value in a receiver 3.;COPYRIGHT: (C)1999,JPO