Analogue or Digital Flashcards
1
Q
Analogue Accuracy of analogue meter
A
In a moving coil analogue meter, the needle moves in proportion to current flow in it that voltage causes
2
Q
Digital Accuracy of digital voltmeter
A
- Sampling Rate is number of time per second that the quantity is measured
- Sampling sensitivity is the smallest increment in the quantity that is measured and recorded
There set limit on the accuracy of digitised info
3
Q
Why transmit in digital
A
Pro
- More data fitted in same bandwidth
- Most interference can be eliminated giving higher quality
Con
- Time delay due to signal processing
- Data accuracy limited by sampling settings
4
Q
Signal
A
An electrical impulse or radio wave transmitted or received
5
Q
Digital signal
A
Signal used to represent data at a sequence of discrete values.
Has finite set of possible valves
6
Q
Analog signal
A
Any continuous signal for which the time-varying feature(variable) of the signal is a representation of some other time-varying quantity
7
Q
What is a signal
A
Electrical impulse or radio wave transmitted or received
