A: No DC component
B: Timing information
C: Data Transparent
D: Anti-noise ability
举一反三
- As an experienced technician， you are responsible for Technical Support. A customer calls to askthe best signal level and noise level for cell phone. How to respond？（） A: -40dBm signal and -90dBm noise B: -50dBm signal and -90dBm noise C: -30dBm signal and -90dBm noise D: -20dBm signal and -90dBm noise
- Building information modeling is based on the relevant information data of the construction project as the basis of the model, the building model is built, and the real information of the building is simulated by digital information
- 数字信号处理的缩写DSP代表的含义是什么（ ） A: Digital Signal Processing ; B: Demand Side Platform ; C: Digital Signal Processor ; D: Digital Signal Process.
- An optical cable is used to transmit：（） A: digital audio from a component to a receiver. B: analog video from a component to a receiver. C: analog audio from a component to a receiver. D: digital video from a component to a receiver.
- In the OSNR model for EDFA amplifiers， SNR OUT = 1/（1/SNR IN + FhvB/P IN ）， what does SNR IN represent？（） A: the signal to noise of the current optical amplifier B: the signal to noise of the previous amplifier or source C: the signal to noise introduced by the optical multiplexer D: the accumulated noise to signal ratio of the optical channel
内容
- 0
Generally speaking, digital transmission can get higher signal quality than analog transmission, because? A: The repeater can regenerate digital pulses to remove signal distortion, and the amplifier amplifies the analog signal as well as the analog signal distorted B: Digital signals are smaller than analog signals and are not prone to distortion C: Analog signals are continuous and are not prone to distortion D: Digital signal is easier to sample than analog signal
- 1
Which is the modulation and demodulation technology mainly used among the following communication modes? A: Analog channel transmits digital data B: Analog channel transmit analog data C: Digital channel transmit digital data D: Digital channel transmit analog data
- 2
translation: Digital Signal Processing ______________________________________________
- 3
What is the primary difference between data and information?() A: Information<br/>is processed to get data. B: Data<br/>is processed to get information. C: Data,<br/>unlike information, is related to hardware. D: Data<br/>is stored, information is not.
- 4
Data can be generally divided into analog data and digital data.