FreeWave FGRO9CSU User manual

Spread Spectrum Wireless Data Transceiver User Manual
Spread Spectrum
Wireless Data Transceiver
User Manual
Version 6.1
FreeWave Technologies, Inc.
1880 South Flatiron Court
Boulder, CO 80301
[phone]
[phone] Fax
www.FreeWave.com
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Spread Spectrum Wireless Data Transceiver User Manual
SPREAD SPECTRUM WIRELESS DATA TRANSCEIVER USER MANUAL VERSION 6.1
Copyright © 1995-2004 by FreeWave Technologies, Inc. All rights reserved. Published 2004.
WARRANTY
Your FreeWave Wireless Data Transceiver is warranted 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 Technologies will, at its discretion, repair or replace the product.
FreeWave Technologies, its suppliers, and its licensors shall in no event 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.
RESTRICTED RIGHTS
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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This product is licensed by The United States. Diversion contrary to U.S. law is prohibited.
Shipment or re-export 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.
UL NOTIFICATION
Model# FGRO9CSU is suitable for use in Class 1, Division 2, Groups A, B, C, and D or non-hazardous
locations only. Input voltage for Model# FGRO9CSU is 6 to 30 volts DC.
Model# DGRO9RFS is suitable for use in Class 1, Division 2, Groups A, B, C, and D or non-hazardous
locations only.
Input voltages for Model# DGRO9RFS are determined by the label on the bottom of the board. If the
board has Label A shown below the input voltage is 6 to 14 volts DC.
If the board has Label B shown below the input voltage is 6 to 14 volts DC at a maximum baud rate of
57.6 KBaud or 6 to 18 volts DC at a maximum baud rate of 19.2 KBaud, operation mode of MultiPoint
Slave or MultiPoint Slave/Repeater only.
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FCC NOTIFICATIONS
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 model number FGR09 has a maximum transmitted output power of 955mW. It is
recommended that the transmit antenna be kept at least 23 cm away from nearby persons
to satisfy FCC RF exposure requirements.
The “I”-series transceiver have maximum transmitted output power of 500mW. 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, there is no guarantee 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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Table of Contents
TABLE OF CONTENTS...........................................................................................................................................V
ABOUT FREEWAVE TRANSCEIVERS.................................................................................................................7
CHOOSING POINT-TO-MULTIPOINT OR POINT-TO-POINT OPERATION ........................................................................8
QUICK START ON A POINT-TO-MULTIPOINT SYSTEM...............................................................................9
POINT-TO-MULTIPOINT OPERATION LEDS................................................................................................................9
QUICK START ON A POINT-TO-POINT SYSTEM...........................................................................................10
POINT-TO-POINT OPERATION LEDS.........................................................................................................................10
CHOOSING A LOCATION FOR THE TRANSCEIVERS..................................................................................11
SETTING UP THE TRANSCEIVER USING HYPERTERMINAL ...................................................................12
ACCESSING HYPERTERMINAL’S SETUP MENU .........................................................................................................12
CONNECTING AND DISCONNECTING FROM HYPERTERMINAL...................................................................................16
TROUBLESHOOTING HYPERTERMINAL.....................................................................................................................17
SETTING UP A TRANSCEIVER...........................................................................................................................18
OPERATION MODE....................................................................................................................................................18
SET OPERATION MODE.............................................................................................................................................20
Using the Point-to-Point Slave/Master Switch able Operation Mode (Mode 6) .................................................20
Script File or AT commands................................................................................................................................21
BAUD RATE..............................................................................................................................................................24
SET BAUD RATE.......................................................................................................................................................24
CALL BOOK..............................................................................................................................................................27
EDIT CALL BOOK .....................................................................................................................................................27
Programming Point-to-Point Extended Call Book to Use Three or Four Repeaters ..........................................28
Programming Point-to-MultiPoint Call Book .....................................................................................................29
Programming Point-to-MultiPoint Extended Call Book .....................................................................................29
RADIO TRANSMISSION CHARACTERISTICS ...............................................................................................................30
EDIT RADIO TRANSMISSION CHARACTERISTICS.......................................................................................................30
FreqKey in 900 MHz Transceivers......................................................................................................................30
(0) Hop Table Version.........................................................................................................................................31
(1) Hop Table Size...............................................................................................................................................31
(2) Hop Freq Offset .............................................................................................................................................31
(3) Frequency Zone..............................................................................................................................................32
FreqKey in 2.4 GHz Transceivers .......................................................................................................................34
(1) Max Packet Size and (2) Min Packet Size......................................................................................................36
(3) Xmit Rate........................................................................................................................................................37
(4) RF Data Rate .................................................................................................................................................37
(5) RF Xmit Power...............................................................................................................................................37
(6) Slave Security.................................................................................................................................................37
(7) RTS to CTS.....................................................................................................................................................38
(8) Retry Time Out...............................................................................................................................................38
(9) Lowpower Mode.............................................................................................................................................39
(A) High Noise.....................................................................................................................................................39
(B) MCU speed....................................................................................................................................................40
RADIO STATISTICS....................................................................................................................................................40
SHOW RADIO STATISTICS.........................................................................................................................................40
Number of Disconnects........................................................................................................................................40
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Antenna Reflected Power.....................................................................................................................................41
Transmit Current (mA)........................................................................................................................................41
Average Noise Level............................................................................................................................................41
Average Signal Level...........................................................................................................................................41
Overall Rcv Rate (%)...........................................................................................................................................41
Radio Temperature..............................................................................................................................................41
MULTIPOINT PARAMETERS ......................................................................................................................................41
EDIT MULTIPOINT PARAMETERS..............................................................................................................................42
(0) Number Repeaters..........................................................................................................................................42
(1) Master Packet Repeat ....................................................................................................................................42
(2) Max Slave Retry.............................................................................................................................................43
3) Retry Odds.......................................................................................................................................................43
(4) DTR Connect..................................................................................................................................................43
(5) Repeater Frequency.......................................................................................................................................43
(6) NetWork ID....................................................................................................................................................44
(8) MultiMaster Synch.........................................................................................................................................44
(9) 1 PPS Enable/Delay.......................................................................................................................................44
(A) Slave/Repeater...............................................................................................................................................44
(B) Diagnostics....................................................................................................................................................45
(C) Subnet ID.......................................................................................................................................................45
(D) Radio ID........................................................................................................................................................46
OVERLAPPING MULTIPOINT SYSTEMS .....................................................................................................................46
PASSWORDS .............................................................................................................................................................47
SETTING A PASSWORD..............................................................................................................................................47
Changing a Password..........................................................................................................................................47
Disabling a Password..........................................................................................................................................47
TIME DIVISIBLE MULTIPLE ACCESS (TDMA)..........................................................................................................47
ADDITIONAL SETTINGS......................................................................................................................................48
LOW BAUD RATES....................................................................................................................................................48
SETUP TIMEOUT .......................................................................................................................................................48
FACTORY DEFAULT SETTINGS.........................................................................................................................49
EXAMPLES OF DATA COMMUNICATION LINKS.........................................................................................50
ADDITIONAL TRANSCEIVER INFORMATION...............................................................................................53
OPERATIONAL RS422 AND RS-485 INFORMATION...................................................................................................53
RS-422 and RS-485 Full Duplex Pin-Outs..........................................................................................................54
RS-485 Half Duplex Pin-Outs..............................................................................................................................54
RS232 PIN ASSIGNMENTS ........................................................................................................................................54
FGRO RF BOARD ONLY PINOUT..............................................................................................................................55
FGR-115WC WATERPROOF ENCLOSURE PIN OUT FOR CABLE ASC0612WW.........................................................56
TECHNICAL SPECIFICATIONS..........................................................................................................................56
TECHNICAL SPECIFICATIONS..........................................................................................................................57
900 MHZ TRANSCEIVER SPECIFICATIONS ................................................................................................................57
2.4 GHZ TRANSCEIVER SPECIFICATIONS .................................................................................................................59
OEM BOARD LEVEL MECHANICAL DRAWING.........................................................................................................60
FREEWAVE TECHNICAL SUPPORT .................................................................................................................61
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About FreeWave Transceivers
FreeWave transceivers operate in virtually any environment where RS232 data communications occur.
The transceivers function as a 9-pin null modem cable. If the FreeWave transceivers are to be used in an
application where a null modem cable is used, such as communication between two computers, then the
FreeWave transceivers can be connected directly. If FreeWave transceivers are to be used to replace a
straight-through RS232 cable, then a null modem cable must be placed between the transceiver and the
DCE instrument to which it is connected.
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Choosing Point-to-MultiPoint or Point-to-Point Operation
A Point-to-Point system is limited to one Master and one Slave transceiver. Repeaters may be added in
to extend the reach of the network, but no other Master or Slave may be added.
In a MultiPoint system the transceiver, designated as a Master, is able to simultaneously be in
communication 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 systems. In a Point-to-Point
system all packets are acknowledged, whether sent from the Master to the Slave or from the Slave to the
Master. In a MultiPoint system, outbound packets from the Master or Repeater to Slaves or other
Repeaters are sent a user defined number of times. 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 system 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 system is different from Point-
to-Point applications. The number of radios in a MultiPoint system is influenced by the following
parameters:
1. Size of the blocks of data. The longer the data blocks, the smaller the system 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
system 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 system 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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Quick Start on a Point-to-MultiPoint System
The following is a quick start up to setting up two transceivers in Point-to-MultiPoint mode. This mode allows for a
Master to communicate with several Repeaters and Slaves simultaneously.
1. Connect the transceiver to the serial port of your computer either through a serial cable or via the
diagnostics cable.
2. Open up a Hyper Terminal session.
•Use the following settings in connecting with hyper terminal
•Connect to COMx (depending on which COM port your cable is connected to)
•Set data rate to 19,200, data bits - 8, Parity- none, Stop bits – 1, Flow control – none.
3. Press the setup button next to the serial port on the radio. If you are using the diagnostics cable, press
Shift-U (capital U).
•The three lights on the board should all turn green, indicating Setup mode.
•The main menu will appear on the screen.
4. Press 0to get into the Operation Mode menu.
•Press 2to set the radio as a point to MultiPoint Master.
•Press 3 to set the radio as a point to MultiPoint Slave.
•Press Esc to get back to Main menu.
5. Press 1in the main menu to change the Baud Rate.
•The baud rate in setup mode is always 19200.
•The baud rate must be changed to match the baud rate of the device that the radio is attached to.
6. At the Main Menu, press 3.
•Set FreqKey, Max Packet Size, Min Packet Size, RF Data rate to be the same on all radios throughout
the network.
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 Operation LEDs.
Master Slave Repeater
Condition Carrier Detect
(CD) Transmit (TX) Clear to Send (CTS) Carrier Detect
(CD)
Transmit
(TX) Clear to Send
(CTS)
Carrier
Detect
(CD)
Transmit
(TX) Clear to Send (CTS)
Powered, not linked Solid red
brightSolid red dimOff Solid red brightOff Blinking red Solid red brightOff Blinking red\
Repeater and Slave
linked to Master, no data Solid red brightSolid red dimOff Solid greenOff * Solid red brightSolid greenSolid red, dim* Solid red bright
Repeater and Slave
linked to Master, Master
sending data to Slave
Solid red
brightSolid red dimOff Solid greenOff * Solid red brightSolid greenSolid red, dim* Solid red bright
Repeater and Slave
linked to Master, Slave
sending data to Master
Solid green
RCV data
or Solid red
bright
Solid red
dimIntermittent flash
redÑoÒ
Solid
greenIntermittent flash
redÑoÒ
* Solid red
brightSolid greenSolid red bright* Solid red bright
Master with diagnostics
program running Solid red
brightSolid red
dimIntermittent flash
redÑoÒ
Solid
greenIntermittent flash
redÑoÒ
* Solid red
brightSolid greenSolid red bright* Solid red bright
* Clear to Send LED will be solid redwith a solid link, as the link weakens the Clear to Send LED light on the
Repeater and Slave will begin to flash\.
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Quick Start on a Point-to-Point System
When purchased as a pair, the FreeWave® Wireless Data Transceivers are shipped from the factory pre-
configured 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 RS232 cable and attach the power adapter to
the transceiver. The cable supplied will fit a 9-pin male RS232 connector; any other format will
need an adapter or different cable.
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 RS232 data rate is set. This
must match the rate for the instrument to which it is attached. The baud rate does not have to be
on the same setting for the two transceivers.
4. Edit the Call Book. The Master needs the Slave’s serial number in its Call Book. The Slave
needs either the Master’s serial number in its Call Book, or Slave Security disabled.
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 LEDs
Master Slave Repeater
Condition Carrier
Detect
(CD)
Transmit
(TX) Clear to Send (CTS) Carrier Detect (CD) Transmit (TX) Clear to Send (CTS) Carrier Detect
(CD)
Transmit
(TX) Clear to Send (CTS)
Powered, no link Solid red
bright Solid red brightSolid red brightSolid red
brightOff Blinking red
\Solid red
brightOff Blinking red
\
Linked, no
Repeater, sending
sparse data
Solid
greenIntermittent flash
redÑoÒ
Intermittent
flash
redÑoÒ
Solid
greenIntermittent flash
redÑoÒ
Intermittent
flash
redÑoÒ
n/a n/a n/a
Master calling
Slave through
Repeater
Solid red
brightSolid red dimSolid red brightSolid red brightOff Blinking red
\Solid red
brightOff Blinking red
\
Master linked to
Repeater, not to
Slave
Flashing
orange\Solid red dimSolid red brightSolid red brightOff Blinking red
\Solid red
brightSolid red, dimSolid red bright
Repeater linked to
Slave Solid greenIntermittent flash
redÑoÒ
Intermittent
flash
redÑoÒ
Solid
greenIntermittent flash
redÑoÒ
Intermittent
flash
redÑoÒ
Solid
greenIntermittent flash
redÑoÒ
Intermittent
flash
redÑoÒ
Mode 6 - waiting
for ATD command Solid red brightOff Blinking red\Solid red brightOff Blinking red
\n/a n/a n/a
Setup Mode Solid
greenSolid greenSolid greenSolid greenSolid greenSolid greenSolid greenSolid greenSolid green
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Choosing a Location for the Transceivers
Placement of the FreeWave transceiver is likely to have a significant impact on its performance. Height is
key. 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. The 6-foot RS232 cable included with the transceiver usually provides ample
distance for placement away from other equipment. To improve the data link, FreeWave Technologies
offers directional and omni directional antennas with cable lengths ranging from 3 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. It is also possible that an adjustment as little as 2 feet in antenna placement can solve noise
problems. In extreme cases, such as when the transceiver is located close to Pager or Cellular
Telephone transmission towers, the standard and cavity band pass filters that FreeWave offers can
reduce the out-of-band noise.
FreeWave also offers a waterproof version of the 900MHz transceivers. This model can be placed
outdoors without additional weather protection. The waterproof enclosure still requires an external
antenna and includes a 6-foot data and power pigtail cable.
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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 for the purposes of use of the FreeWave product.
Note: Included on the User Manual CD is the optional “EZ Config” transceiver setup program and
instructions. This program eliminates the need to use HyperTerminal to program the transceivers.
Once the transceiver is mounted and connected with the programming cable to the programming
computer, it can be programmed for use through HyperTerminal.
The following describes, in detail, how to set HyperTerminal to program the transceivers.
Accessing HyperTerminal’s Setup Menu
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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3. In the Name text box, type in a descriptive name. Select an icon from the Icon selection 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 using 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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The following are the port settings for the 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.
8. To connect HyperTerminal to the transceiver, press the Setup button on the back of the
FreeWave transceiver. If connected to the diagnostics port, type U(Capital ‘U’) to invoke the
setup menu.
Model FGR-115WC Model FGR-115RC
(Waterproof) (Rugged)
Setup
Button Setup Button
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When the Setup button is pushed, the FreeWave Setup Main Menu will display in the
HyperTerminal dialog box. All three LEDs on the transceiver will light 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 from HyperTerminal
click on the Disconnect icon, then click on the Call icon to reconnect. If the settings have not
been saved they must be reselected when HyperTerminal reconnects to the transceiver.
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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
RS-232 cable is being used. Follow the steps below to change the Com ports.
1. Select Properties from the File menu.
2. Click on the Connect To tab and verify that the correct Com port is selected.
3. Click on the OK button to close the Properties dialog box.
4. Click on the Disconnect button and then click the Call button.
5. Press the Setup button on the back of the transceiver. The setup menu screen should appear.
2. Gibberish appears on the screen appears after pressing the setup button.
This usually indicates a Baud Rate problem. Follow the steps below to change the Baud Rate.
Gibberish BEFORE the setup button is pressed indicates Diagnostics is enabled in the Master.
1. Select Properties from the File menu.
2. Click on the Configure button.
3. Change the Baud Rate to 19200 and click on the OK button.
4. Click on the OK button to close the Properties dialog box.
5. Click on the Disconnect button and then click the Call button.
6. Press the setup button on the back of the transceiver. 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. Select Properties from the File menu.
2. Click on the Configure button.
3. Change the Flow Control to None and click on the OK button.
4. Click on the OK button to close the Properties dialog box.
5. Click on the Disconnect button and then click the Call button.
6. Press the Setup button on the back of the transceiver. The Setup Menu screen appears and
changes can be made from the keyboard.
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.
For additional troubleshooting for HyperTerminal, call FreeWave Technical Support at [phone].
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Setting up a Transceiver
Once the Setup menu appears, changes in the configurations can be made.
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.
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 setup, Master or Slave Mode can 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 the transceiver is advised, but not necessary.
Operation
Mode Description
Point-to-Point
Master (0) This mode designates the transceiver as the Master in Point-to-Point mode. The Master calls 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 for the Slave and Repeater(s) not determined by the
Master are RF Xmit Power, Slave Security, Retry Time Out, Hop Table size,
version, and offset.
A quick method of identifying a Master is to power the transceiver. Prior to
establishing a communication link with a Slave or Repeater all three of the
Master’s LEDs will be solid red.
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Point-to-Point
Slave (1) 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 Slave will communicate with a Master listed in its Call
Book that calls it. This functionality may be bypassed by setting Slave Security in
Menu 3-Edit Radio Transmission Characteristics to 1.
Point–to-
MultiPoint
Master (2)
This mode designates the transceiver as a Master in MultiPoint mode. This
mode allows one Master transceiver to simultaneously be in communication 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.
Point-to-
MultiPoint
Slave (3)
This mode designates the transceiver as a Slave in MultiPoint mode. This mode
allows the Slave to communicate with a MultiPoint Master.
Point-to-Point
Slave/Repeater
(4)
This mode designates the transceiver to act as either a Slave or Repeater—
depending on the instructions from the Master. If a transceiver is in an ideal
location where it can act as either an end point in the communication link (Slave)
or as an extension to a link at a further point (Repeater). However, 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: Repeater has no security features. When a transceiver is designated a
Point-to-Point Slave/Repeater, it will allow any Master to use it as a
Repeater.
Point-to-Point
Repeater (5) 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 characteristics are
disabled. A Repeater will connect with any Master that calls it. The Repeater
must still be set up in the Master's call book.
The use of one Repeater in a communications link will reduce the top data
throughput available when compared to a direct Master to Slave link, generally
on the order of 50%. This impact is generally noticed only when using the
transceiver at 115.2 KBaud. The throughput does not decrease further if two or
more Repeaters are used.
Point-to-Point
Slave/Master
Switchable (6)
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.
Point-to-
MultiPoint
Repeater (7)
This option allows the transceiver to operate as a Repeater in a MultiPoint
network.
Ethernet
Options (F) 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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Set Operation Mode
1. Selecting 0Set Operation Mode from the Main Menu displays the following window.
2. Select the appropriate operation mode by typing the associated number or letter after Enter
Choice.
3. When the selection is accepted the Set Modem Mode menu will refresh and display the updated
mode.
4. Press the Esc key once to return to the main Setup menu.
USING THE POINT-TO-POINT SLAVE/MASTER SWITCH ABLE OPERATION MODE (MODE 6)
When using the Point-to-Point Slave/Master Switch able operation mode, it is important to remember the
following items:
•This mode only works through the data port with diagnostics turned off.
•The transceiver remains in Slave mode until called by another transceiver in its Call Book or
instructed to call another transceiver through an AT command. All script file or AT commands
issued to the transceiver in switch able operation mode must be in ALL CAPS.
•If the DTR line is asserted when the command is given, it will call out immediately. Conversely,
after an AT command is given, the transceiver will not call out until the DTR goes high.
•The Master will disconnect when DTR goes low.
•The user may change settings in the user interface without using the Setup button.
•Predetermined script files may be used which allow any of the transceiver's settings to be
changed upon execution of that file. This allows the user to establish push button command sets
that instruct the transceiver to call a predetermined Slave.
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