To isolate a patient from getting connected to stray voltages. An isolation transformer is used and batteries power it to further isolate you from the real world. Also for sensitive measurements to eliminate some of the noise and current loops.
A: The output needs filtering
A/: that is totally wrong. the AD will have digital output easy to control and manipulate
while conversion of analog signal to digital signal, we need to convert continuous analog signal to discrete signal. this can be done by dividing the analog signal into specific time slots. this process is known as sampling. there is a condition for sampling that can be given as follows. fs<=2fm
The sampling rate
Analogue to digital is a conversion process not a transmission process.
You would utilize a VoIP adapter in the conversion of analog voice signals into digital IP packets. These adapters also have the ability to convert digital IP packets into analog voice streams.
You would find a digital to analog conversion taking place when you have a monitor with a VGA connection plugged into the computer. The computer would then have to convert digital signals into analog signals so the monitor could comprehend the data it is given.
Transforming analog signals to digital is known simply as analog to digital conversion, sometimes shortened to A-D conversion.
ATA (analog telephone adapter
MODEMs do this function.
DA conversion or D-to-A conversion.
Analog-to-digital conversion
the Sampling Rate.
AM is most susceptible to noise.
AD is Analog to Digital conversion the use is to do digital measurements of analog voltages and currents, a computer soundcard is an AD converter that convert analog sound to digital sound so that it can be played on a computer, and DA is the opposite, digital to analog conversion, the digital sound on the computer is converted to analog sound to drive a speaker or headphone
while conversion of analog signal to digital signal, we need to convert continuous analog signal to discrete signal. this can be done by dividing the analog signal into specific time slots. this process is known as sampling. there is a condition for sampling that can be given as follows. fs<=2fm
The sampling rate
The conversion of analog video to a digital format, or vice-versa.
Sampling Rate.