Which of the following is not the main limitation of optical transmission signals .
A: eye opening
B: pulse overshoot
C: undershoot limitations
D: amplitude
A: eye opening
B: pulse overshoot
C: undershoot limitations
D: amplitude
举一反三
- Among the following four transmission media, which has the widest bandwidth, the smallest signal transmission attenuation and the strongest anti-interference capability? A: Twisted pair B: Coaxial cable C: Optical fiber D: Microwave
- Which of the following is not a single factor pulse? A: thin pulse B: slow pulse C: uneven pulse D: floating pulse
- Which of the following is not a single factor pulse? A: superficial pulse B: retarded pulse C: thin pulse D: uneven pulse
- Which of the following functions can a timer in a computer system be used to achieve? A: Generate interrupt signal regularly B: Measuring the frequency of external periodic signals C: Generate periodic pulse signals D: Generate periodic sine wave
- Which of the following pulse patterns is caused by discontinuous pulse and qi phases? A: knotted pulse B: slow-regular-intermittent pulse C: abrupt pulse D: uneven pulse