WhichofthefollowingistheBESTtooltotroubleshootaDB-9port?（） A: Ohmmeter B: Anti-staticwriststrap C: Oscilloscope D: Loopbackplug

The oscilloscope of NI ELVIS III platform is 2-channel and the function generator is 4-channel.

In conclusion, to use an analog oscilloscope, you need to adjust three basic settings to accommodate an incoming signal:· The attenuation or amplification of the signal. Use the volts/div control to adjust the amplitude of the signal before it is applied to the vertical deflection plates.· The time base. Use the sec/div control to set the amount of time per division represented horizontally across the screen.· The triggering of the oscilloscope. Use the trigger level to stabilize a repeating signal.Also, adjusting the focus and intensity controls enables you to create a sharp, visible display.

以下哪个单词不是合成词? A: skylab B: moonwalk C: firewall D: oscilloscope

The oscilloscope of NI ELVIS III platform is 2-channel and the function generator is 4-channel. A: 正确 B: 错误

Which parameter is not measured by DPO-2002B double-channel oscilloscope? A: current B: voltage C: cycle time D: frequency

To measure the period of a pulse waveform, you must use( ) A: a DMM B: a logic probe C: an oscilloscope D: a logic pulser

下面哪个虚拟仪器不能测量数字信号（ ）。 A: OSCILLOSCOPE B: LOGIC ANALYSER C: COUNTER TIMER D: SIGNAL GENERATOR

Which of the following are the two steps in probe checking? A: Restore the oscilloscope to the default setting B: Adjust the probe attenuation factor C: Probe Safety D: Compensate the probe properly