\ TECH 3812
TECH 3812
Digital Electronic Communications
Spring 2025

Instructor Info

Daniel Kohn
Email: dekohn@memphis.edu
Office ET218
Office Hours

Course Info

Course Policies
Course Policies (discussed with class 4/22/25)
GradeWatch Access

Assignment Submission

Submit Assignments

Course Outline:

DateTopicReadingHandoutsAssignments
Jan 21Welcome / class policies   
Jan 23Intro to Communication

Data Transmission
 Lecture Notes

Lecture Notes
 
Jan 28Tranmssion Media Lecture Notes 
Jan 30AM/FMAnalog AM/FM

Modulation Techniques (start to 3:47, 6:05-6:22, 11:44-13:21, 16:28-17:05, 21:33-end)
  
Feb 4Transmission Lines

Lab Demo
Propagation Velocity
Cable Velocity Factor (Use RG-174 for this lab)

Transmission Line Terminations for Digital and RF signals - Intro/Tutorial Video

Reflection Video
Lecture NotesLab Demo #1 - Transmission Lines
Feb 6Phase Modulation Wave Phase
Digital Modulation
Modulation
ASK
APSK and QAM
PSK
  
Feb 11Signal Encoding Lecture NotesLab Demo #2 - AM/FM demo (using 2 function generators and showing both analog and digital data transmission)
Feb 13Signal Encoding (Cont)

Synchronous Serial
 Lecture Notes

Lecture Notes
 
Feb 18No Class    
Feb 20Take Home Test #1

(Test OPENED AT 5:20pm in lieu of class)
  Test #1 - The test is open notes, open book, open references.

Suggest printing it out, working the problems then coming back to the page, fill in the answers on line and submitting.

The Login is your last name (first letter of your last name is capitalized), and the password provided via email for Gradewatch.

Due by 7:10pm Tuesday Feb 25, 2025.
Feb 25Synchronous Serial (Review) Lecture NotesLab #3 (Sync Serial) Due (via paper submission) start of next week's lab.
Feb 27RS-232 (Com) Port Parallel to/from Serial
UART
UART
Standard Baud Rates
MAX232
Charge Pump
The RS-232 Standard
Class Notes  
Mar 4RS-232 Snooping

Application of Sync Serial (Card Reader)
RS-232 Gender changers and null modems

RS-232 Snooping
 Lab #4 (RS-232)
Mar 6SPITerminology Reexamination

What could go wrong: SPI (Hackaday)

SPI Explained (Note code for different uProc)
Class Notes (not including SPI Registers for AVR)

Class Notes
 
Mar 10-14Spring Break   
Mar 18I2C Class Notes Lab #5 (SPI Lab) - Due at start of next lab.
Mar 20Low Attendance
(Extra Credit for those who attended)
   
Mar 25No Class (Instructor ill)   
Mar 27USB

Intro to Networking
Intro to USB (video)

USB Decoded

USB Doc
Class Notes 
Apr 1Intro to Networking (Cont) Class Notes
Class Notes
Lab #6 (I2C) - Due in one week. Please make sure to label each capture as stated in handout.

Link to RTC Datasheet
Apr 3No Class (University Closed / Weather)   
Apr 8Networking (Continued)  Lab #7 - due in one week (hand in sheet, submit captures via electronic submission - zip file).

Wireshark

Putty
Apr 10Web Applications  HTTP Minilab
Apr 15HTTP

Forms / Post / Get
HTML Tutorial

CSS Tutorial (For additional formatting)

HTTP Request Methods (Post & Get)
 Lab #8 - Due in one week.
Apr 17Intro to Internet of Things Class Notes  
Apr 22MQTT / Node-Red / ESP8266
(Intro to next Lab)
MQTT Intro Video
MQTT Website
MQTT Getting Started


MQTT Protocol Overview
MQTT v3 Protocol Spec
Dissecting MQTT Using Wireshark

MQTT Essentials
ESP8266 IoT Board
Lecture NotesLab #10 - Export flow and submit as well as demo to instructor for credit.
Apr 24Meet In ET 207 - Work on MQTT Lab  All labs due by end of lab. No assignments accepted beyond this point!
Apr 29Test #2 Review    
May 6
(7pm - 9pm)
Test #2    
     

Reference Links: