FreeWave MM2 User Manual

MM2 Spread Spectrum Wireless Data Transceiver User Manual

MM2

Spread Spectrum

Wireless Data Transceiver

User Manual

Version 1.6

FreeWave Technologies, Inc.

1880 South Flatiron Court

Boulder, CO 80301

[phone]

[phone] Fax

www.FreeWave.com

USER MANUAL

MM2

Copyright © 1995-2008 by FreeWave Technologies, Inc. All rights reserved. Published 2008.

LUM0014AA Rev A Version 1.6 i

MM2 Spread Spectrum Wireless Data Transceiver User Manual

WARRANTY

FreeWave Technologies warrants the FreeWave Wireless Data Transceiver against defects in materials and
manufacturing for a period of two years from the date of purchase. In the event of a Product failure due to materials
or workmanship, FreeWave will, at its discretion, repair or replace the Product.

In no event will FreeWave Technologies Inc., its suppliers, and its licensors be liable for any damages arising from
the use of or inability to use this Product. This includes business interruption, loss of business information, or other
loss which may arise from the use of this Product. Please be advised that OEM customer’s warranty periods may
vary.

Warranty Policy may not apply:

1. If Product repair, adjustments or parts replacements is required due to accident, neglect, unusual physical,
electrical or electromagnetic stress.

2. If Product is used outside of FreeWave specifications.

3. If Product has been modified, repaired or altered by Customer unless FreeWave specifically authorized such
alterations in each instance in writing. This includes the addition of conformal coating.

The Warranty period begins from the date of shipment and is defined per the Standard Warranty Policy stated above.
Special Rate Replacement Option
A special rate replacement option is offered to non-warranty returns or upgrades. The option to purchase the

replacement unit at this special rate is only valid for that RMA, (Return Material Authorization). The special
replacement rate option expires if not exercised within 30 days of final disposition of RMA.

ESTRICTED RIGHTS

R

Microsoft and Windows are registered trademarks of the Microsoft Corporation. pcANYWHERE is a registered
trademark of Symantec Corporation. Other product names mentioned in this manual may be copyrights, trademarks,
or registered trademarks of their respective companies and are hereby acknowledged.

Information in this document is subject to change without notice. The information contained in this document is
proprietary and confidential to FreeWave Technologies, Inc.

This manual is for use by purchasers and other authorized users of the FreeWave™ Spread Spectrum Wireless Data
Transceiver only.

No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, or
for any purpose without the express written permission of FreeWave Technologies, Inc.

FreeWave’s Spread Spectrum Wireless Data Transceivers are made in the United States of America.
Printed in the United States of America.

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

This product is licensed by The United States. Diversion contrary to U.S. law is prohibited. Shipment or re­export of this product outside of The United States may require authorization by the U.S. Bureau of Export
Administration. Please contact FreeWave Technologies for assistance and further information.

NOTIFICATION

UL

Models MM2-T-U, MM2-HS-T-U

are suitable for use in Class 1, Division 2, Groups A, B, C, and D or non-

hazardous locations only. Input voltage for the above models is 5 volts +/- 5% DC.

Models MM2-LV-T-U, MM2-HS-LV-T-U are suitable for use in Class 1, Division 2, Groups A, B, C, and D or

non-hazardous locations only. Input voltage for the above models is 3.3 volts +/- 5% DC.

NOTIFICATIONS

FCC

This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: 1) This
device may not cause harmful interference and 2) this device must accept any interference received, including
interference that may cause undesired operation. This device must be operated as supplied by FreeWave
Technologies, Inc. Any changes or modifications made to the device without the express written approval of
FreeWave Technologies may void the user's authority to operate the device.

CAUTION: The MM2 transceivers have a maximum transmitted output power of 1000mW. It is recommended

that the transmit antenna be kept at least 23 cm away from nearby persons to satisfy FCC RF
exposure requirements.

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of
the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications. However, no
guarantee shall be made that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off and on,
the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

Note: Whenever any FreeWave Technologies module is placed inside an enclosure a label must be placed on the

outside of that enclosure which includes the module's FCC ID.

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

Table of Contents

ABOUT FREEWAVE TRANSCEIVERS.................................................................................................................6

ABOUT FREEWAVE TRANSCEIVERS.................................................................................................................6

OEM / ENGINEERING NOTIFICATION..........................................................................................................................6

CHOOSING POINT-TO-POINT OR POINT-TO-MULTIPOINT OPERATION...............................................7

QUICK START ON A POINT-TO-MULTIPOINT NETWORK ..........................................................................8

POINT-TO-MULTIPOINT OPERATION LED'S ...............................................................................................................8

QUICK START ON A POINT-TO-POINT NETWORK........................................................................................9

POINT-TO-POINT OPERATION LED’S..........................................................................................................................9

CHOOSING A LOCATION FOR THE TRANSCEIVERS..................................................................................10

SETTING UP THE TRANSCEIVER USING HYPERTERMINAL ...................................................................11

ACCESSING HYPERTERMINAL’S SETUP MENU .........................................................................................................11

CONNECTING AND DISCONNECTING FROM HYPERTERMINAL...................................................................................14

TROUBLESHOOTING HYPERTERMINAL.....................................................................................................................15

SETTING UP A TRANSCEIVER ...........................................................................................................................16

OPERATION MODE................................................................................................................................................17

SET OPERATION MODE.............................................................................................................................................19

BAUD RATE..............................................................................................................................................................20

SET BAUD RATE .......................................................................................................................................................20

CALL BOOK.............................................................................................................................................................22

EDIT CALL BOOK .....................................................................................................................................................23

PROGRAMMING POINT-TO-POINT EXTENDED CALL BOOK TO USE THREE OR FOUR REPEATERS .............................24

PROGRAMMING POINT-TO-MULTIPOINT CALL BOOK ..............................................................................................24

PROGRAMMING POINT-TO-MULTIPOINT EXTENDED CALL BOOK ............................................................................25

RADIO TRANSMISSION CHARACTERISTICS.................................................................................................25

EDIT RADIO TRANSMISSION CHARACTERISTICS....................................................................................................... 26

FreqKey in 900 MHz Transceivers...................................................................................................................... 26

(0) Hop Table Version.........................................................................................................................................27

(1) Hop Table Size...............................................................................................................................................27

(2) Hop Freq Offset .............................................................................................................................................27

(3) Frequency Zone .............................................................................................................................................28

(1) Max Packet Size and (2) Min Packet Size ......................................................................................................30

(3) Xmit Rate........................................................................................................................................................32

(4) RF Data Rate .................................................................................................................................................32

(5) RF Xmit Power...............................................................................................................................................33

(6) Slave Security.................................................................................................................................................33

(7) RTS to CTS .....................................................................................................................................................33

(8) Retry Time Out...............................................................................................................................................34

(9) Lowpower Mode.............................................................................................................................................35

(A) High Noise.....................................................................................................................................................35

(B) MCU speed....................................................................................................................................................36

SHOW RADIO STATISTICS..................................................................................................................................36

NUMBER OF DISCONNECTS.......................................................................................................................................36

ANTENNA REFLECTED POWER .................................................................................................................................36

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

TRANSMIT CURRENT (MA).......................................................................................................................................36

AVERAGE NOISE LEVEL...........................................................................................................................................37

AVERAGE SIGNAL LEVEL.........................................................................................................................................37

OVERALL RCV RATE (%) .........................................................................................................................................37

RADIO TEMPERATURE..............................................................................................................................................37

MULTIPOINT PARAMETERS..............................................................................................................................38

EDIT MULTIPOINT PARAMETERS..............................................................................................................................3 8

(0) Number Repeaters..........................................................................................................................................38

(1) Master Packet Repeat....................................................................................................................................38

Master Packet Repeat in MultiPoint Networks with Repeaters......................................................................................... 39

(2) Max Slave Retry.............................................................................................................................................39

(3) Retry Odds .....................................................................................................................................................39

(4) DTR Connect..................................................................................................................................................39

(5) Repeater Frequency.......................................................................................................................................40

(6) Network ID.....................................................................................................................................................40

(8) MultiMaster Synch.........................................................................................................................................40

(9) 1 PPS Enable/Delay.......................................................................................................................................40

(A) Slave/Repeater...............................................................................................................................................41

(B) Diagnostics....................................................................................................................................................41

(C) Subnet ID.......................................................................................................................................................41

(D) Radio ID........................................................................................................................................................42

(E) Local Mode....................................................................................................................................................42

OVERLAPPING MULTIPOINT NETWORKS....................................................................................................43

PASSWORDS ............................................................................................................................................................44

SETTING A PASSWORD..............................................................................................................................................44

Changing a Password..........................................................................................................................................44

Disabling a Password..........................................................................................................................................44

TIME DIVISIBLE MULTIPLE ACCESS (TDMA)..............................................................................................45

ADDITIONAL SETTINGS ......................................................................................................................................46

LOW BAUD RATES....................................................................................................................................................46

SETUP TIMEOUT .......................................................................................................................................................46

FACTORY DEFAULT SETTINGS.........................................................................................................................47

EXAMPLES OF DATA COMMUNICATION LINKS.........................................................................................48

ADDITIONAL TRANSCEIVER INFORMATION...............................................................................................51

BOARD LEVEL PINOUT .............................................................................................................................................51

MM2-T-U AND MM2-LV-T-U 900 MHZ TRANSCEIVER SPECIFICATIONS..............................................52

MM2-T-U AND MM2-LV-T-U 900 MHZ TRANSCEIVER SPECIFICATIONS..............................................54

MECHANICAL DRAWING....................................................................................................................................56

FREEWAVE TECHNICAL SUPPORT ................................................................................................................. 57

ERRATA....................................................................................................................................................................58

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

About FreeWave Transceivers

FreeWave transceivers operate in virtually any environment where data communications occur.

OEM / Engineering Notification

Programming the MM2 is accomplished through a text menu system that can be used with Windows HyperTerminal
or similar terminal emulator. FreeWave Technologies, Inc also offers FreeWave Tool Suite which is a graphical
software application that can program the MM2 and also read diagnostic data from the MM2. Tool Suite is available
for download from the FreeWave website. Please contact FreeWave customer support to set up an account.

For OEMs and engineering firms that want to integrate the MM2 into their product, the above approach can be used
for programming the MM2. In addition to this approach, FreeWave Technologies, Inc also offers a more “machine
friendly” method that allows specific commands to be sent directly to the FreeWave MM2 without using the menu
system. The user will need certain information to accomplish this. This information is available from FreeWave
Technologies, Inc electronically. FreeWave Technologies, Inc does require an NDA (Non Disclosure Agreement) to
be signed prior to providing this information. Please contact your FreeWave representative for further details on
obtaining this information.

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

Choosing Point-to-Point or Point-to-MultiPoint Operation

A Point-to-Point network is limited to one Master and one Slave transceiver. Up to 4 Repeaters may be added to
extend the reach of the network, but no other Master or Slave may be added.

In a Point-to-MultiPoint network (also referred to as MultiPoint network) the transceiver, designated as a Master, is
able to simultaneously communicate with numerous Slaves. In its simplest form, a MultiPoint network functions with
the Master broadcasting its messages to all Slaves and the Slaves responding to the Master when given data by the
device connected to the data port.

It is important to note the differences between Point-to-Point and MultiPoint networks. In a Point-to-Point network all
packets are acknowledged, whether sent from the Master to the Slave or from the Slave to the Master. In a MultiPoint
network, outbound packets from the Master or Repeater to Slaves or other Repeaters are sent a set number of times
determined by the user. The receiving transceiver, Slave or Repeater, will accept the first packet received that
passes the 32 bit CRC. However, the packet is not acknowledged. On the return trip to the Master, all packets sent
are acknowledged or retransmitted until they are acknowledged. Therefore, the return link in a MultiPoint network is
generally very robust.

Traditionally, a MultiPoint network is used in applications where data is collected from many instruments and reported
back to one central site. As such, the architecture of such a network is different from Point-to-Point applications. The
number of radios in a MultiPoint network is influenced by the following parameters:

1. Size of the blocks of data. The longer the data blocks, the smaller the network capacity.

2. Baud rate.

3. The amount of contention between Slaves. Polled Slaves vs. timed Slaves.

4. Use of Repeaters. Using the Repeater setting in a MultiPoint network will decrease overall network capacity

by 50%.

For example, if the network will be polling Slaves once a day to retrieve sparse data, several hundred Slaves could
be configured to a single Master. However, if each Slave will be transmitting data at greater levels, then fewer Slaves
should be linked to the Master. The overall network will be closer to capacity with fewer Slaves.

For examples and additional information on data communication links, see the section Examples of Data
Communication Links later in this document.

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

Quick Start on a Point-to-MultiPoint Network

The following is a quick start guide for setting up two transceivers in Point-to-MultiPoint mode. This mode allows for a
Master to communicate with several Repeaters and Slaves simultaneously.

1. For board level configuration, connect the transceiver to a TTL to RS232 converter then connect to the serial
port of a computer either through the data pins or diagnostics pins. Make sure to connect the radio to a
power source (3.3 VDC for Model #MM2-LV-T, and 5.0 VDC for Model #MM2-T).

• An evaluation interface is available for Model #MM2-T. This will allow the user to directly connect to an

RS232 serial port and use the standard +12VDC power supply. A Diagnostic port is accessible as well
using FreeWave diagnostic cable #ASC0409DC

2. Open up a Hyper Terminal session.

• Use the following settings in connecting with hyper terminal

• Connect to COMx (where 'x' is the number of the com port being connected to)

• Set data rate to 19,200, data bits - 8, Parity- none, Stop bits – 1, Flow control – none.

3. To put the unit into setup mode, press the Setup button on the evaluation interface or short pin 2 to ground.
If using the diagnostics port, press Shift-U (capital U).

• The three LED’s on the board should all turn green, indicating Setup mode.

• The main menu will appear on the screen.

4. Press 0 to get into the Operation Mode menu.

• Press 2 to set the radio as a point to MultiPoint Master.

• OR, Press 3 to set the radio as a point to MultiPoint Slave.

• Press Esc to get back to Main menu.

5. Press 1 in the main menu to change the Baud Rate.

• The baud rate must be changed to match the baud rate of the device that the radio is to be attached to.

• Press Esc to get back to Main menu.

6. At the Main Menu, press 3.

• Set FreqKey, Max Packet Size, Min Packet Size, RF Data rate identical on all radios in the network.

Note: Changing these values may help to eliminate interference from other FreeWave networks.

• Press Esc to get back to Main menu.

7. At the Main Menu, press 5.

• Set the Network ID value to any value between 1 and 4095, except 255.

• Make sure this value is the same on every radio in the network.

Point-to-MultiPoint Operati on LED's.

Condition

Powered, not linked

Repeater and Slave linked
to Master, no data

Repeater and Slave linked
to Master, Master sending
data to Slave

Repeater and Slave linked
to Master, Slave sending
data to Master

Master with diagnostics
program running

Carrier

Detect (CD)

Solid red

bright

Solid red

bright

Solid red

bright

Solid

green

RCV data

or Solid red

bright

Solid red

bright

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Master Slave Repeater

Transmit

(TX)

Solid red

dim

Solid red

dim

Solid red

dim

Solid red

dim

Solid red

dim

Clear to

Send (CTS)

Off 

Off 

Off 

Intermittent

flash redo

Intermittent

flash redo

Carrier

Detect (CD)

Solid red

bright

Solid

green

Solid

green

Solid

green

Solid

green

Transmit

(TX)

Off  Blinking red

Off 

Off 

Intermitten

t flash

redo

Intermitten

t flash

redo

Clear to

Send (CTS)

* Solid red

bright

* Solid red

bright

* Solid red

bright

* Solid red

bright

Carrier

Detect (CD)

Solid red

bright

Solid

green

Solid

green

Solid

green

Solid

green

Transmit (TX)

Off 

Solid red

dim

Solid red

dim

Solid red

bright

Solid red

bright

Clear to

Send (CTS)

Blinking

red

* Solid red

bright

* Solid red

bright

* Solid red

bright

* Solid red

bright

MM2 Spread Spectrum Wireless Data Transceiver User Manual

* Clear to Send LED will be solid red with a solid link, as the link weakens the Clear to Send LED on the Repeater or
Slave will begin to flash.

Quick Start on a Point-to-Point Network

When purchased as a pair, the FreeWave® Wireless Data Transceivers are shipped from the factory pre-configured
with most of the settings to operate in Point-to-Point applications. To establish communications between a pair of
FreeWave Wireless Data Transceivers just received from the factory:

1. Connect the transceiver to the instrument with the TTL to RS232 converter and also attach power.

2. Set the Modem mode in each transceiver. One should be set as a Point-to-Point Master (Mode 0) and the

other set as a Point-to-Point Slave (Mode 1).

3. Set the baud rate on each transceiver to match the baud rate of the instrument to which it is attached.

Please note, when setting the transceiver's baud rate, its TTL data rate is set. The baud rate does not have
to be on the same setting for the two transceivers.

4. Edit the Call Book. Enter the Slave serial number in the Master’s Call Book. Enter the Master’s Serial

number in the Slave’s Call Book, or disable Slave Security (in the Slave).

5. Connect antennas to the transceiver. Any FreeWave transceiver may be operated without an antenna for

bench-top testing without concern for damaging the product. Noise potential may be reduced on the bench
by lowering the Xmit power.

6. Shortly after both transceivers are plugged in, they should establish a communications link with each other

and the connection is complete. Using the table below, verify that the radios are operating as expected.

Point-to-Point Operation LED’s

Condition

Powered, no link

Linked, no Repeater,

sending sparse data

Master calling Slave

through Repeater

Master linked to

Repeater, not to Slave

Repeater linked to Slave

Mode 6 - waiting for ATD

command

Setup Mode

Carrier

Detect (CD)

Solid red
bright 

Solid

green

Solid red

bright

Flashing
orange

Solid

green

Solid red

bright

Solid

green

Master Slave Repeater

Transmit

(TX)

Solid red

bright

Intermitten

t flash

redo
Solid red

dim

Solid red

dim

Intermitten

t flash

redo

Off 

Solid

green

Clear to

Send (CTS)

Solid red

bright

Intermittent

flash

redo
Solid red

bright

Solid red

bright

Intermittent

flash

redo

Blinking

red
Solid

green

Carrier

Detect (CD)

Solid red

bright

Solid

green

Solid red

bright

Solid red

bright

Solid

green

Solid red

bright

Solid

green

Transmit

(TX)

Off 

Intermittent

flash

redo

Off  Blinking red

Off  Blinking red

Intermittent

flash

redo

Off  Blinking red  n/a n/a n/a

Solid

green

Clear to

Send (CTS)

Blinking red



Intermittent

flash

redo





Intermittent

flash

redo

Solid

green

Carrier

Detect (CD)

Solid red

bright

n/a n/a n/a

Solid red

bright

Solid red

bright

Solid

green

Solid

green

Transmit

(TX)

Off  Blinking red

Off  Blinking red

Solid red

dim

Intermitt
ent flash
redo

Solid

green

Clear to

Send (CTS)





Solid red

bright

Intermittent

flash

redo

Solid

green

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

Choosing a Location for the Transceivers

Placement of the FreeWave transceiver is likely to have a significant impact on its performance. The key to the
overall robustness of the radio link is the height of the antenna. In general, FreeWave units with a higher antenna
placement will have a better communication link. In practice, the transceiver should be placed away from computers,
telephones, answering machines and other similar equipment. To improve the data link, FreeWave Technologies
offers directional and Omni directional antennas with cable lengths ranging from 13 inches up to 200 feet. When
using an external antenna, placement of that antenna is critical to a solid data link. Other antennas in close proximity
are a potential source of interference; use the Radio Statistics to help identify potential problems. The Show Radio
Statistics page is found in option 4 in the Main Menu. An adjustment as little as 2 feet in antenna placement can
resolve some noise problems. In extreme cases, such as when interference is due to a Pager or Cellular Telephone
tower, the band pass filters that FreeWave offers, may reduce this out-of-band noise.

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

Setting up the Transceiver using HyperTerminal

Note: The terms Modem and Transceiver are used interchangeably in this manual and in the text of the Setup

menu. While the words have different meanings, the two terms should be treated as one and the same
when referring to FreeWave products.

Once the transceiver is powered and connected with the programming cable to the programming computer, it may be
programmed for use through HyperTerminal or EZConfig. (NOTE: the MM2 will not work with EZConfig. It will work
with the FreeWave Tools Suite configuration utility)

The following describes how to set HyperTerminal to program the transceivers.

Accessing HyperTerminal’s Setup Menu

Note: The following screen shots are taken from a computer using Windows XP. The display may vary slightly if using

different operating systems.

1. Click on the Start button. A cascading menu appears. Select Programs, Accessories, Communications and
then HyperTerminal. A window appears similar to the following:

2. Double-click on the Hypertrm.exe icon. The following window appears.

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

3. In the Name text box, type in a descriptive name. Select an icon from the Icon sel ect ion box.

4. Click on the OK button. The following “Connect To” dialog box appears:

5. Select the connection type to be used from the Connect usi ng drop-down menu. In most cases the
connection type will be either Direct to Com1 or Direct to Com2.

6. Click on the OK button. The Properties dialog box appears for the selected connection type.

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

The following are the port settings which must be set for a proper connection:

Port Setting Menu Option to Select

Bits per second 19200
Data bits 8
Parity None
Stop bits 1
Flow control None

7. After selecting the appropriate menu items for each setting, click on the OK button. The following
HyperTerminal dialog box appears:

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

8. To put the radio into setup mode, short pin 2 to ground. If connected to the diagnostics port, type U (Capital
‘U’) to invoke the Setup menu.

When Setup is invoked, the FreeWave Setup Main Menu will display in the HyperTerminal dialog box. All
three LED’s on the transceiver will turn green    and stay green as long as the transceiver is in the
Setup mode.

9. Save the HyperTerminal connection settings by selecting Save from the File menu.

IMPORTANT NOTE: Whenever a change is made to the HyperTerminal settings in an open terminal session,

the connection must be disconnected then reconnected before the settings will take effect.

Connecting and Disconnecting from HyperTerminal

The HyperTerminal dialog box displays several icons in the toolbar. To reconnect to HyperTerminal, click on the

Disconnect
be reselected when HyperTerminal reconnects to the transceiver.

icon, and then click on the Call icon to reconnect. If the settings have not been saved they must

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

Troubleshooting HyperTerminal

The following are some common issues encountered while using HyperTerminal.

1. Nothing appears on the screen after pressing the Setup button on the transceiver.

This usually indicates one of two things; either the wrong Com port is selected or a null modem cable is
being used. Follow the steps below to change the Com ports.

1. Click on the Disconnect button.

2. Select Properties from the File menu.

3. Click on the C on nect To tab and verify that the correct Com port is selected.

4. Click on the OK button to close the Properties dialog box.

5. Click on the Call button.

6. Return the transceiver to Setup mode. The Setup menu screen should appear.

2. Gibberish appears on the screen after pressing the Setup button.

This usually indicates a Baud Rate problem. Follow the steps below to change the Baud Rate.
The problem may also be that the transceiver under test is TTL and NOT RS-232, make sure the TTL from the
MM2 is being converted to RS232. Gibberish BEFORE the Setup button is pressed indicates Diagnostics is
enabled.

1. Click on the Disconnect button.

2. Select Properties from the File menu.

3. Click on the Configure button.

4. Change the Baud Rate to 19200 and click on the OK button.

5. Click on the OK button to close the Properties dialog box.

6. Click on the Call button.

7. Return the transceiver to Setup mode. The Setup menu screen should appear.

3. The Setup menu appears on the screen, but nothing happens when keys on the keyboard are

pressed.

This usually indicates a three-wire connection, Rx, Tx & Gnd. Follow the steps below if the connection uses a
three-wire connection.

1. Click on the Disconnect button.

2. Select Properties from the File menu.

3. Click on the Configure button.

4. Change the Flow Control to None and click on the OK button.

5. Click on the OK button to close the Properties dialog box.

6. Click on the Call button.

7. Return the transceiver to Setup mode. The Setup menu screen should appear.

4. A connection exists, data is being received through HyperTerminal, and some data is correct, but

the remaining data is in unrecognizable characters.

This usually indicates a parity mismatch. To resolve this issue, ensure that the parity of the transceiver and the
parity of HyperTerminal are set the same. HyperTerminal’s parity settings are under Properties and the
FreeWave parity is found under the Baud Rate in the Setup mode.

1. Click on the Disconnect button.

2. Select Properties from the File menu.

3. Click on the Configure button.

4. Change the Parity to None and click on the OK button.

5. Click on the OK button to close the Properties dialog box.

6. Click on the Call button.

Return the transceiver to Setup mode. The Setup menu screen should appear.

For additional troubleshooting for HyperTerminal, call FreeWave Technical Support at [phone].

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MM2 Spread Spectrum Wireless Data Transceiver User Manual

Setting up a Transceiver

Note: Once Setup mode has been invoked in HyperTerminal, the process of exiting Setup mode involves pressing

the Escape (Esc) key several times, allowing the transceiver to connect to the network. Otherwise, cycling
the power is the alternative way to exit Setup mode.

Firmware version

Transceiver’s unique
serial number

Setup Menu Options

The following section describes in detail how to use all of the Setup menu options to edit the operational parameters
and view the performance data.

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Operation Mode

The Operation Mode option designates the method FreeWave transceivers use to communicate with each other.
FreeWave transceivers operate in a Master to Slave configuration. Before the transceivers can operate together, they
must be set up to properly communicate.

In a Point-to-Point configuration, Master or Slave Mode may be used on either end of the communication link without
performance degradation. When setting up the transceiver, remember that a number of parameters are controlled by
the settings in the Master. Therefore, deploying the Master on the communications end where it will be easier to
access is advised, but not necessary.

Operation Mode Description
Point-to-Point

Master (0)

Point-to-Point
Slave (1)

Point–to­MultiPoint Master
(2)

Point-to­MultiPoint Slave
(3)

Point-to-Point
Slave/Repeater (4)

Point-to-Point
Repeater (5)

Point-to-Point
Slave/Master
Switchable (6)

This mode designates the transceiver as the Master in Point-to-Point mode. The Master
may call any or all Slaves designated in its Call Book.

In Point-to-Point mode the Master determines the setting used for most of the radio
transmission characteristics, regardless of the settings in the Slave and/or Repeaters. The
settings not determined by the Master are: RF Xmit Power, Slave Security, Retry Time
Out, and the Hop Table settings.

This mode designates the transceiver as a Slave in Point-to-Point mode. The Slave
communicates with any Master in its Call Book—either directly or through up to four
Repeaters.

When functioning as a Slave, the Entry to Call feature in the transceiver’s Call Book is not
operational. The Call Book may be bypassed in the Slave by setting Slave Security to 1.
See the Slave Security section later in this manual.

This mode designates the transceiver as a Master in MultiPoint mode. This mode allows
one Master transceiver to communicate simultaneously with numerous Slaves and
Repeaters.

A Point-to-MultiPoint Master communicates only with other transceivers designated as
Point-to-MultiPoint Slaves or Point-to-MultiPoint Repeaters.

This mode designates the transceiver as a Slave in MultiPoint mode. This mode allows
the Slave to communicate with a MultiPoint Master. The Slave may communicate with its
Master through one or more Repeaters.

This mode designates the transceiver to act as either a Slave or Repeater—depending on
the instructions from the Master. The transceiver cannot act as both a Slave and a
Repeater at the same time. True Slave/Repeater functionality is only available in a
MultiPoint mode.

Note: Repeaters have no security features. When a transceiver is designated a Point-

to-Point Slave/Repeater, any Master may use it as a Repeater.

FreeWave allows the use of up to four Repeaters in a Point-to-Point communications link,
significantly extending the operating range. When designated as a Repeater, a
transceiver behaves as a pass-through link. All settings for the call book, baud rates and
radio transmission characterist ics are dis abled. A Repeater will connect with any Master
that calls it. The Repeater must be set up properly in the Master's call book.

Mode 6 allows the transceiver to be controlled entirely through software commands. A
number of key parameters in FreeWave's user interface may be changed either directly
with a program such as Windows Terminal or through the use of script files. Additionally,
when the Point-to-Point Slave/Master Switchable option is selected and the transceiver is
not calling a Slave, it will function as a Slave and accept any appropriate calls from other
transceivers. Please check the Application Note on Mode 6 for more information

Continued on next page

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Point-to­MultiPoint
Repeater (7)

Mirrorbit
Master(A)

Mirrorbit Slave (B)

Ethernet Options
(F)

This option allows the transceiver to operate as a Repeater in a MultiPoint network. See
the MultiPoint parameters section for details on enabling MultiPoint Slave/Repeater mode.

See FreeWave Application note LAN5424xx for information on Mirrored Bit
Communication

See FreeWave Application note LAN5424xx for information on Mirrored Bit
Communication

This menu is only needed for Ethernet transceivers. Although this menu is included here,
it is unrelated to the transceiver’s Mode.

Please see the Ethernet addendum for more information on this menu.

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