MDEV-315-HH-KF#-MS
MDEV-418-HH-KF#-MS
MDEV-433-HH-KF#-MS
WIRELESS MADE SIMPLE
®
MS KEYFOB MASTER DEVELOPMENT SYSTEM USER’S GUIDE
ORDERING INFORMATION
PART #
DESCRIPTION
MDEV-***-HH-KF#-MS
MS Keyfob Master Development System
*** = 315, 418 (Standard), 433MHz
# = 1-5, Number of buttons
DESCRIPTION
MS Series encoders and decoders are ideal for remote control and command,
security, keyless entry, status monitoring, and a host of similar applications. They
allow the status of up to eight buttons or contacts to be securely transferred via a
wireless link. The Master Development System is intended to give a designer all the
tools necessary to incorporate the Keyfob transmitter, LR Series receiver, and MS
Series decoder into a product. This guide will show how to take full advantage of the
evaluation board included with the kit. Data guides for all of the Linx parts contained
in the kit are included or may be downloaded from the Linx website. The Master
Development System serves several important functions:
• Rapid Evaluation - It allows the performance and features of the Keyfob, LR
Series, and MS Series to be quickly evaluated.
• Design - It shows how to design with the decoder and how to interface with other
components. It also demonstrates the overall system function, making it easy to
develop the initial system design.
• Prototype Development - It allows for additional circuitry to be placed directly on
the board so that it can act as the first prototype of the product. All of the signals
are available on a wire-wrap header for easy connection to external circuitry.
The kit includes 2 Keyfob transmitters, 2 LR Series receivers*, 2 MS Series
decoders*, 1 development board set up for the receiver and decoder, and 1 CW
Series antenna. The decoder board is also populated with 1 QS Series USB module
for use with the software on the included CD.
*One part is soldered to the board, one extra is for use on your first prototype board.
Revised 1/28/08
MS SERIES DECODER DEVELOPMENT BOARD
USING THE MASTER DEVELOPMENT SYSTEM
Using the Master Development System is straightforward. After unpacking the
board, screw the antenna onto the connector, install the supplied 9V battery, and
turn on the power switch. The encoder and decoder will have default settings
from the factory and will work straight out of the box. To create a new address,
follow these easy steps:
1. Press and hold the CREATE_ADDR button on the transmitter to create a new
Code Word. This is done by sticking a paper clip through the hole on the back
of the case and pressing the button inside. The Code Word will be randomized
for as long as the button is held down. Once comfortable that the number is
sufficiently random, release the button.
2. Once the button is released, the MODE_IND LED will begin to flash to indicate
that it is ready to accept Control Permissions. Press all of the data line buttons
that are to be recognized, then press the CREATE_ADDR button again or let it
time out after seventeen seconds.
3. Press the LEARN button on the decoder board and the MODE_IND LED will
start flashing. Press any of the data line buttons on the transmitter and press the
LEARN button again. The encoder’s Code Word has now been learned by the
decoder and they will operate together.
5
8
1
6
2
13
4
3
Figure 1: The MS Series Decoder Development Board
9
7
10
11
12
14
TROUBLESHOOTING
If the boards fail to work out of the box, then try the following:
• Check the battery to make sure it is not dead.
• Make sure the baud rate switches are set to 9,600bps on the decoder board.
• Make sure that the antenna is connected.
• Check to see if the PDN switch is on, placing the decoder into Power Down
Mode. In most cases, the encoder PDN switch should be on.
• Make sure that you set your Control Permissions correctly. If you have not set
the encoder to use a particular line, then when you press a button on the
encoder board, the MODE_IND LED on the decoder board will light up, but the
data line LED will not light up.
If all of these appear to be in order, then you can call 800-736-6677 or e-mail
techsupport@linxtechnologies.com for technical support.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
9V Battery
Power Jack
On-Off Switch
Voltage Regulator
QS Series USB Module
Prototype Area
Break-out Header
RP-SMA Antenna Connector
LR Series Receiver
MS Series Decoder
Data Line LEDs
Indicator LEDs
Function Switches
LEARN Button
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Page 3
SETTING THE TRANSMITTER ADDRESS
The Keyfobs are all supplied from the
factory with a default address and all
buttons authorized. The address is
changed by using a paper clip or probe
CREATE_ADDR
to press the CREATE_ADDR button on
Button Access
the board through the hole in the back
of the case. When the button is
depressed, a LED will light up in the
MODE_IND window, indicating that the
address is being created. The address
will be randomized for as long as the
Figure 2: CREATE_ADDR Button Access
button is held down. When the button is
released, the randomized address is saved and the LED will begin flashing to
indicate that the Control Permissions may now be set. Press the buttons that the
Keyfob user will have the authority to access. Press the CREATE_ADDR button
with the paper clip again or wait 17 seconds for it to time out. The address and
Control Permissions are now set. The decoder will need to learn the address
before it will accept any transmissions. Please see the Typical Applications
section of this data guide or the MS Series Decoder Data Guide for details.
THE DECODER BOARD
The decoder board included with the evaluation kit uses the LR Series receiver
to receive the signal from the Keyfob transmitter and then feeds it into the MS
Series decoder. The board is designed to allow full access to the many features
of the decoder and to speed development and integration of the LR and MS into
a product. The following sections describe the features of this board in detail.
The Prototyping Area
The prototyping area on the decoder board contains a large area of plated
through-holes so that external circuitry can be placed on the board. This circuitry
can be interfaced with the MS Series decoder through the breakout header to the
right of the holes. At the bottom of this area is a row connected to the 3V power
supply and at the top is a row connected to ground.
All of the data lines are connected to a wire-wrap header to the right, allowing
easy access from the prototyping area. The Decoder Data and TX ID lines are
also available on the header as well as the PDN line from the RF module. This
allows complete control of the entire system from the prototyping area, giving the
designer a great deal of flexibility in using the board.
The Power Supply
The power supply on the decoder board consists of a standard 9V battery and
power jack connected to a 3.0V voltage regulator. It can provide approximately
500mA of current to the prototyping area, so if the added circuitry will need more
than this, the designer must add an external supply. If the circuit will consistently
draw more than 100mA of current, it might be better to use the power jack rather
than the battery, as the battery may run down fairly quickly, reducing testing and
development time.
The jack accepts a standard 5.5mm plug with the tip ground and the outer shell
7 to 16VDC positive supply. While a reverse voltage protection diode has been
included on the board to protect the circuitry in case the voltage on the plug is
reversed, it is still a good idea to double-check the polarity.
The RF Area
The figure below shows the RF area of the development board. The board uses
the LR Series receiver as shown. Attach the included antenna to the reverse
polarity SMA connector before operation.
BUTTON ASSIGNMENTS
The Keyfob is available in five unique button configurations. Those
configurations and the corresponding switch numbers are shown in the figure
below. The table shows which encoder data line has been assigned to each
switch. When a button is pressed, the data line will go high, causing the
corresponding data line on the decoder to go high if the addresses match.
S4
S5
S2
S4
S5
S2
Button
S1
S4
S1
S2
S3
S4
S1 S5 S3
S2
Data Line
D0
D1
D2
D3
D4
Figure 4: The Decoder Board RF Area
Page 5
S2
S3
S4
S5
Figure 3: OTX-***-HH-KF#-MS Button Assignments
Page 4
THE DECODER BOARD (CONT.)
The Decoder Area
The figure below shows the decoder area of the development board.
THE DECODER BOARD (CONT.)
The USB Area
The decoder board has a Linx SDM-USB-QS-S USB module for use with the
included development software. This module is powered by the USB bus, so it
will not pull any current from the battery. The figure below shows this section.
Figure 6: The Decoder Board USB Area
Figure 5: The Decoder Area
The decoder is in the center beneath the Linx logo. To the left are LEDs that are
connected to the decoder data lines. These will light up when the decoder
receives a signal from the transmitter instructing it to take the data line high. LED
D0 corresponds to data line D0 and so forth.
Beneath the decoder are two LEDs. D12 is connected to the MODE_IND line.
D8 is connected to the RX_CNTL line and will provide visual feedback by lighting
up when the decoder activates the receiver when in RX Control Mode.
Under the LEDs is a button that is connected to the LEARN line. This button is
used to learn the Code Word from the encoder as described in the MS Series
Decoder Data Guide.
There are four switches to the left of the CREATE / LEARN button. BSEL0 and
BSEL1 are used to set the baud rate of the decoder as shown in the chart below.
The Keyfob transmitter is set to 9,600bps, so BSEL0 should be on and BSEL1
should be off. If the switch is up,
BSEL1
BSEL0
Baud Rate
then the line is high (on); if down,
0
0
2,400
then the line is low (off).
0
1
9,600
*Important* The decoder board must be
set to the same baud rate as the
transmitter in order for the signal to be
received correctly.
The microcontroller on the right monitors the data lines and generates
commands that are sent to the development software on the PC via the QS
Series USB module. The RX_IND LED to the left of the module will flash to
indicate that data is being received from the PC, and the TX_IND line will flash
to indicate that the module is sending data to the PC.
The QS Series USB module provides a simple serial link to a PC via a USB
connection. It converts logic-level serial signals to USB-compliant signals and
vice versa, so it can be connected to virtually any serial device, including
microcontrollers, RS-232 / RS-485 level converters, or Linx RF modules. It is
completely self-contained, requiring only a USB type B jack, and includes all
necessary firmware and drivers.
1
1
0
1
19,200
28,800
The PDN switch will connect the RX_CNTL line of the encoder to the PDN line
of the receiver so that the RX Control Mode can be tested. This mode is
described in the MS Series Decoder Data Guide.
The LATCH switch will place the decoder into Latch Mode when on, so that the
data lines will go high when a valid signal is received and stay high until a second
valid signal is received. If the switch is off, the data lines are momentary.
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INSTALLING THE SOFTWARE AND DRIVERS
The Master Development System uses the QS Series USB module to provide a
simple serial interface to a PC via a USB connection. The module requires
drivers to be installed on the PC before it can function properly. The QS Series
Direct Drivers are included on the CD with the software.
The first time the QS module is plugged into the computer, Windows will display
the Found New Hardware Wizard, which will guide you through installing the
drivers. Application Note AN-00201 describes the installation of the drivers in
detail. The drivers should be installed before running the Development Software.
The MS Master Development Software will automatically start when the CD is
inserted and the player in the figure below will appear.
MASTER DEVELOPMENT SOFTWARE
This software is designed to give a complete understanding of how the MS
Series encoders and decoders work together, as well as providing an idea of
how they can be used in a system.
The Master Development software can be used in one of two modes. The default
mode is a software simulation of the system and does not require any hardware.
It simulates two handheld transmitters as well as two receiving devices. This is
a good way of showing how the MS Series can work in a system by turning on
lights and opening doors.
The second mode is for use with the Master Development System. When the
decoder board is plugged into a USB port on the PC, the transmitter can be used
to activate the features in the software. If you can see the LEDs on the evaluation
board turn on, then you will see the LEDs in the program turn on and activate the
corresponding data line function.
The figure below is a screen shot of the program set up in Software Operation
Mode for simulating the operation of the system.
Exit
Player Screen
View Documentation
Install Software
Play Movie
Selection Keypad
Go to the
Linx Website
Figure 7: Software Installer
Clicking the Install Software button will start the Installation Wizard, which will
guide you through the installation of the development software. The View
Documentation button will show a list of the application notes and manuals
related to the MS Series. Selecting one of these will open the file in Adobe
Acrobat. The Play Movie button will play a short video about Linx on the Player
Screen, which can be controlled with the Selection Keypad. Clicking the button
on the bottom right of the player will open the Linx Technologies website in the
computer’s default browser.
The View Documentation list allows for the installation of Adobe Acrobat Reader
so that the documents may be viewed. There is also the option of installing
Flash, which may be required if the Linx video does not play correctly.
Figure 8: MS Encoder / Decoder DemonstrationSoftware
The transmitters are on the right hand side and the receivers are at the bottom.
Complete instructions for using the software can be found by clicking on the Help
label at the top right of the window.
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Embedded System
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