Site Logo Home
 
rOm
Quest
Glossary
 
Random
Page
Search
Site
Lush
Sim
Class
Subject
Images
 
Help
FAQ
Sign
Up
Log
In
A Level     Signal     ADC Flash     ADC Ramp     DAC Summing     Distortion     >Problems<     Regenerator     Sample and Hold     Sampling     Serial and Parallel     signal to noise ratio    

Signal Problems


Site for Eduqas/WJEC - Go to the AQA site.

  A Level    Signals  0 of 24    Question 832    Cable Length Limits 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set1 of 24    Question 833    Cable Length Limits 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set2 of 24    Question 834    Cable Length Limits 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set3 of 24    Question 835    Cable Length Limits 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set4 of 24    Question 1417    Cable Length Limits 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set5 of 24    Question 1418    Cable Length Limits 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set6 of 24    Question 1419    Cable Length Limits 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set7 of 24    Question 793    Celular Networks 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set8 of 24    Question 800    Celular Networks 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set9 of 24    Question 684    Sampling 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set10 of 24    Question 686    Sampling 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set11 of 24    Question 811    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set12 of 24    Question 812    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set13 of 24    Question 813    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set14 of 24    Question 814    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set15 of 24    Question 815    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set16 of 24    Question 816    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set17 of 24    Question 817    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set18 of 24    Question 818    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set19 of 24    Question 819    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set20 of 24    Question 820    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set21 of 24    Question 821    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set22 of 24    Question 822    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set23 of 24    Question 823    Serial and Parallel Data 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set24 of 24    Question 309    Sub-systems 
Score 0/0 
Not attempted  
Last Answer  
Deadline not set  Questions 0 to 24   -->  View All  

Attenuation, Dispersion, Latency, Distortion and Noise

Attenuation

Attenuation is the weakening of the signal with distance from the transmitter.

Dispersion

Latency

Attenuation, Dispersion and Latency

Distortion

Amplifiers should be linear. The output should be exactly proportional to the input. In real life this is hard to achieve so the output is distorted. Two common types of distortion are cross-over distortion with small signal inputs and clipping or limiting with large signal inputs. Dont confuse distortion with noise.

Digital on/off signals are much less likely to get distorted.

Noise

Unwanted signals. It can be a background hiss or cracks and bangs caused by lightning or the switching of industrial machinery. This is impulsive noise. Radio signals often suffer from noise due to unwanted signals leaking into the receiver. FM demodulators ignore the signal amplitude and therefore have better noise immunity then AM receivers. Don't confuse noise with distortion.

 

Subject Name     Level     Topic Name     Question Heading     First Name Last Name Class ID     User ID    

fff
Home
<<<
ppw
Pg Up
<<
ppp
Up
<
|||

>|<
nnn
Down
>
nnw
Pg Down
>>
lll
End
>>>

Close
Escape
X

Q: qNum of last_q     Q ID: Question ID         Score: num correct/num attempts         Date Done    

 

Submit
Enter

 

Question Text

image url

 


Help Link

Add     Delete     Clone     Edit     Hardness

Help Text
Debug


 

 

 

Contact, Copyright, Cookies and Legalities: C Neil Bauers - reviseOmatic V4 - © 2016/17

Hosted at linode.com - London