Copyright © 2005 Heathkit Company, Inc. All Rights Reserved Automating and Integrating Residential Systems Presentation 11 – X10-How It Works; The Theory

2 Objectives At the end of this exercise, you will be able to:

3 Successfully obtain and install ActiveHome Pro Software. Successfully connect the ActiveHome Pro PC Interface to your computer. Successfully install and configure the ActiveHome Pro PC Interface.

4 About This Presentation This presentation will not match the exercise topic because you need to know more about how X10 works. The more you know about X10 technology, the better off you will be. Let’s take a look at the X10 system and see how it controls things.

5 Transmission Theory The X10 Communications Protocol uses an RF signal burst that represents binary digital coding.

6 AC power line voltage is 60 Hz, 120 volts sine waves.

7 X10 hardware looks for the zero-crossing point of each sine wave.

8 Signal Injection

9

10 Burst Frequency

11 The signals are carried throughout the building by the AC power lines.

12 Controllers A controller can transmit one of 256 possible X10 addresses. The addresses are selected by rotating the two code wheels of each module. They are A-P and 1-16.

13 The six basic X10 commands are: ON OFF Bright Dim All Lights ON All Lights OFF

14 Large assortment of X10 controllers

15 Plug-in Controllers Desk-top manual or timed controllers. Telephone controller. RF interface to plug-in

16 Wire-in Controllers Wall box manual, timed or motion controller. Low-voltage/contact closure from OEM products. Telephone controllers can issue commands from virtually anywhere over the telephone.

17 RF wireless remote controls

18 Types of Electrical Loads It is important to use the proper module for controlling the desired load. There are two kinds of loads. Resistive – Incandescent lighting – Use a lamp module. Inductive – Virtually all other electrical items. These include, computers, motors, fans, fluorescent lights, etc. – Use appliance modules to control these items.

19 Receivers Lamp Modules: Screw-in Wire-in Wireless Appliance Modules: Wire-in Wireless

20 Interfaces Data: Controls devices that have the X10 protocol built in. Low-Voltage: Controls devices that do NOT have the X10 protocol built in. Computer: Controls devices using the Graphical User Interface (GUI) on a computer running Windows.

21 Transmission Theory

22 Binary 1 – A 1 millisecond burst of 120 kHz at the zero-crossing point. Binary 0 – An absence of the 120 kHz burst at the zero-crossing point. These 1 millisecond bursts should be transmitted three times.

23 A complete code transmission uses 11 cycles of the power line.

24 A binary 1 is defined as a 1 millisecond burst of 120 kHz at the zero-crossing point. A binary 0 is the absence of the burst.

25 Binary Code List

Copyright © 2005 Heathkit Company, Inc. All Rights Reserved Automating and Integrating Residential Systems End