| 摘要 |
PROBLEM TO BE SOLVED: To provide a transmission characteristic test device for an analog subscriber circuit that can reduce the cost of a test system by decreasing number of test devices and conduct a test in the device of subscriber circuits so as to reduce the test time and to provide a transmission characteristic test method. SOLUTION: Test addition circuits 2, 3, 4, 5 are connected opposite to subscriber circuits 6, 7, 8, 9 by using two analog wires 10 to analog input sides of the subscriber circuits. Furthermore, a digital measurement device 1 is connected to the subscriber circuits by using two outgoing digital lines 11 and two incoming digital lines 12. The test addition circuits 2, 3, 4, 5 are connected to the digital measurement device 1 by the two outgoing digital lines 11 and two incoming digital lines 12.
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