# Blog

## What is an example of analog signal? ## What is the resolution of the analog input signal?

• When entering the analog input card the analog signal will be split into a value between 0 and 32.767. Dividing the analog value into 32.767 gives us a certain resolution. Every time our value increases by 1, it means that the analog signal has increased with x mA.

## How can digital data be transmitted in analog channel?

• Transmission of digital data in analog channel is done by process called Modulation. Amplitude modulation is a process in which digital data is converted to analog signals using single frequency carrier signal. Similarly FREQUENCY shift keying uses a constant amplitude carrier signal and two frequencies to differentiate between 1 and 0.

## What is the MA value of the analog signal?

• When entering the analog input card the analog signal will be split into a value between 0 and 32.767. Dividing the analog value into 32.767 gives us a certain resolution. Every time our value increases by 1, it means that the analog signal has increased with x mA. We can’t quite yet calculate the mA.  