| 摘要 |
PROBLEM TO BE SOLVED: To easily position a probe from a tester even for a fine circuit of a device under test. SOLUTION: The tester 100 has input ports 105, 115 having an input terminal for receiving test signals from a probe 300 and a power output terminal for feeding power, respectively. The input terminal is also available for receiving video signals, and a display 110 of the tester displays pictures provided by the video signals and waveform tracks of test signals. A camera 200 fed with an operating power from the power output terminal of the tester supplies video signals to the input terminal of the tester.
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