| 摘要 |
PROBLEM TO BE SOLVED: To calibrate setup time, hold time, and skew of a test and measurement apparatus 10. SOLUTION: Each input block 18 has a plurality of input circuits 16. Each input circuit 16 receives an input signal from a port 20, and receives a reference signal from a reference signal generator 12 in the test and measurement apparatus 10 directly and via a calibration port 24 and the port 20. The input circuits 16 can take the reference signal according to the reference signal. A channel for trigger by the reference signal also takes the reference signal, so that the characteristic of the channel can be measured and calibrated. COPYRIGHT: (C)2009,JPO&INPIT
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