VAB 
ID #

VAB TITLE

Type of VAB

Description of VAB

Lab Requirements

7.1

Audio Communication of Text

Build and Test

Student’s build an Air Modem from scratch.

Make sure updated Real-Time signal generator blocks are on your C: drive (see your email).

7.2

Effect of Weak Signals, Noise, and Interference

Explore and Test

Student test their Air Modem.

7.3

Impact of Transmission Speed on the Accuracy of Reception

Explore and Test

Adjust the transmission rate on one and observe the error rate on the receiver.

7.4

Different Codes

Improve a design and Test

Change the character to letter mappings, observe what happens.

Music Receiver

Adapt a design to a related problem

This is a simple extension of the 1 tone per letter receiver to build a worksheet that receives music.

7.5

Multi-Tone Audio Communication of Text

Explore, Design and Build

Type a short message on the transmitter keyboard and send it. Listen to the tones representing the characters.

7.6

Serial Binary Audio Communication of Text

Demo Transmitter

Students hear what a two tone transmitter sounds like.

7.7

Dual Tone Audio Communication of Text

Optional Explore, Design and Build

Students experiment with sending two tones per letter.

Sending and Receiving Touch Tone

Optional Explore, Design and Build

Students experiment with sending Touch Tone.

This is a work-in-progress, use at own risk.

7.8A

Morse Code Audio Communication of Text

Demo

Type a short message on the transmitter keyboard and send it. Listen to the tones representing the characters.

Observe the receiver interpreting the tones as characters.

Communication with More Characters

Set up the audio communication demonstration and select the optional larger character set including upper case characters. Use the different methods to send a message with the larger character set.