Home

MM2 Spread Spectrum Wireless Data Transceiver User Manual

Contents

1. Setting Description 0 Lowpower disabled More 1 LED s dimmed transceiver remains awake transceiver is listening to the Master s transmissions on every slot and transceiver s data port is shut down if the RTS line is deasserted low In this case the transceiver needs to be awakened before it will be able to send data to the Master 2 LED s dimmed transceiver sleeps every other slot 3 LED s dimmed transceiver sleeps 2 of 3 slots 4 31 LED s dimmed transceiver sleeps the number of slots corresponding to the setting For example with a setting of 31 the transceiver sleeps 30 of 31 slots Less IMPORTANT NOTES 1 Lowpower Mode is used only in MultiPoint Slaves using serial protocol Power savings occur only when the Slave is linked No power savings occur when the Slave is transmitting data Lowpower Mode is of little value when a Slave has a constant high throughput MCUSpeed must be set to 0 and RF Data Rate must be set to 3 for Lowpower Mode to operate properly 2 Additional power savings may be realized when the Number Repeaters is set to 1 3 To communicate to a TTL port of a transceiver that is in Lowpower Mode the RTS line must be held high to wake it up The transceiver will wake up within approximately 20 milliseconds of when RTS goes high 4 Ifthe RTS line on the Slave is held high the transceiver will remain in normal operation regardless of the Lowpower Mode setting Once RTS is dropped the tran
2. 3 Ss MCI Mail Freewave User HyperTer i Hypertrm exe Application Modified 5 11 98 8 01 PM s 4 U 2 El My Computer VA 2 Double click on the Hypertrm exe icon The following window appears AA A LUMO0014AA Rev A Version 1 1 12 MM2 Spread Spectrum Wireless Data Transceiver User Manual Connection Description 3 Inthe 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 Connect To 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 d LUMO0014AA Rev A Version 1 1 13 d MM2 Spread Spectrum Wireless Data Transceiver User Manual COM1 Properties 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 Free Wave User Manual HyperT erminal Dis ala ele LUM0014AA Rev A Version 1 1 14
3. HEI F for more f Hop Table Parameters Hop Table Version H Hop Table Size 112 Available options Hop Freq Offset 0 Frequency Zone 111111111 X 9 Choice _ Sales Connected 1 18 02 ANSIW 19200 8 N 1 SCROLL caps Num Capture Print echo 0 Hop TABLE VERSION Entry 0 allows the user to choose the portion of the band in which the transceiver will operate Selection Band 0 Full 902 928 MHz 915 928 MHz 902 928 MHz 16 fewer frequencies than full U S set 916 920 MHz 921 928 MHz Uses 902 928 MHz with center frequencies of 911 919 MHz notched out 6 902 915 MHz Note Do not use FreqKey 14 E with the 915 928 MHz setting 1 916 920 MHz setting 3 and 921 928 setting 4 hop tables Gn 1 lG lM 1 Hop TABLE SIZE The Hop Table Size defines how many separate channels will be used by a given network For 90MHz networks the Hop Table Size may be set from 50 to 112 2 HoP FREQ OFFSET The Hop Freq Offset option is not functional in the 900 MHz spread spectrum transceiver Note Regardless of the FreqKey used all transceivers in either Point to Point or Point to MultiPoint networks must be set to identical Hop Tables Version Hop Table Size and Hop Freq Offset HO A LUMO0014AA Rev A Version 1 1 28 h MM2 Spread Spectrum Wireless Data Transceiver User Manual 3 FREQUENCY ZONE Frequency Zone The idea of frequency zoning is to divide the available band 9
4. h 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 gt gt MM and stay green as long as the transceiver is in the Setup mode MM2 User Manual HyperTerminal DER File Edit View Call Transfer Help DG SZ 28 MAIN MENU D2 Version 8 651 02 29 2008 902 928 MHz Modem Serial Number 990 0155 0 Set Operation Mode 1 Set Baud Rate 2 Edit Call Book 3 Edit Radio Transmission Characteristics e Show Radio Statistics 6 8 Es Edit MultiPoint Parameters TDMA Menu Chg Password c Exit Setup Enter Choice Connected 0 06 30 Auto detect 19200 8 N 1 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 LS icon and then click on the Call Eg icon to reconnect If the settings have not been saved they must be reselected when Hy
5. EDIT RADIO TRANSMISSION CHARACTERISTICS ccccccecececececececececececececececececececececececececececececececececececececececeseeeseeececs 26 FregKey in 900 MHz Transceivers sisson eena a deasestecisestesteesesgesasssgdsseudesdocebeebdeiaptedeesasees toads 27 0 Hop Table Version sicierosinaasienieai iseia eeen E a ERa Ee EE EE EER ROER a E EEEN Eia 28 1 Hop Table Kizee an eae E A e EESE EOE EEEE E O EIERE R a R TE ii 28 EE EE 28 3 FREQUENCY EE 29 1 Max Packet Size and 2 Min Packet Nice 31 IDE TTT 32 AIRE DARA EE 32 RE So 32 6 Slave Securite da 32 7 RESTO De EEA EEEE ETA O e e 33 SI RE Time A A de 33 9 EOWDOW ER Mide essa 34 AJ Hieh AT a id 34 GE Eengel 35 SHOW RADIO Ada cai ea avis 35 Nu mber of Disconnects peee diran 35 Antenna Reflected EE 35 Tr nsmit C rrent MA E 35 Average E 36 Average Ena Level EE 36 Overall Rev Rate W deiere gedet iaa 36 Radio Temperature 36 MULTIPOINT PARAMETERS ss sss ss sss esasan aaaea aeaaeae aeaaaee anana aeaaaee 37 EDIT MULTIPOINT PARAMETERS ccccccccecececececececececececececececececececececececececececececececececececececececececececececececececeeecececesss 37 WINNIE AAA 37 d LUM0014AA Rev A Version 1 1 iv h MM2 Spread Spectrum Wireless Data Transceiver User Manual 1 Master Packet T ee Eet A e 37 Master Packet Repeat in MultiPoint Networks with Repegtere carac cnn onn cnc aca cnnerannncrnno 38 Max Slave EE 38 3 REY OAS reee de 38 4 DDR EE
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 Please check the Application Note on Mode 6 for more information Continued on next page AA A LUMO0014AA Rev A Version 1 1 18 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Point to This option allows the transceiver to operate as a Repeater in a MultiPoint network See MultiPoint the MultiPoint parameters section for details on enabling MultiPoint Slave Repeater mode Repeater 7 Mirrorbit See FreeWave Application note LAN5424xx for information on Mirrored Bit Master A Communication Mirrorbit Slave B See FreeWave Application note LAN5424xx for information on Mirrored Bit Communication Ethernet Options This menu is only needed for Ethernet transceivers Although this menu is included here F itis unrelated to the transceiver s Mode Please see the Ethernet addendum for more information on this menu AA A LUMO0014AA Rev A Version 1 1 19 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Set Operation Mode 1 Sele
7. it will call all Slaves listed until it reaches the first serial number of 000 0000 If a serial number is entered after the all zero number or as a Repeater it will not be recognized as a valid number by the Master PROGRAMMING POINT TO MULTIPOINT CALL Book In a MultiPoint network the Slaves and Repeaters are not listed in the Master s Call Book A Slave must have the Master and any Repeater it is going to use in its Call Book Note If the Network ID feature is used in a MultiPoint network no entries are needed in the Call Book of any of the transceivers See the Network ID feature in the MultiPoint Parameters section The following example shows the Call Books of a MultiPoint network comprised of a Master Repeater and Slave in which the Slave can communicate either through the Repeater or directly to the Master MultiPoint Master Call Book Unit Serial Number 555 0001 Entry Number Repeater1 Repeater2 0 000 0000 1 000 0000 No serial number entries are necessary in the Master s Call Book MultiPoint Repeater Call Book Unit Serial Number 555 0002 Entry Number Repeater1 Repeater2 0 555 0001 1 000 0000 MultiPoint Slave Call Book Unit Serial Number 555 0003 Entry Number Repeater1 Repeater2 0 555 0001 1 555 0002 2 000 0000 At times it may be desirable to force a Slave to go through a specific MultiPoint Repeater In this scenario the Slave s Call Book should contain only the serial number for that Repeat
8. of the three Slaves The end device should be configured to interpret the serial message and act on it if necessary Multipoint Repeater LUMO0014AA Rev A Version 1 1 47 h MM2 Spread Spectrum Wireless Data Transceiver User Manual The last example is a Point to MultiPoint network which uses one of the sites as a Slave Repeater This network functions in the same manner as a standard MultiPoint network with Repeaters However the number of radios may be reduced with the use of the MultiPoint Slave Repeater feature Multipoint Slave Repeater Multipoint Repeater IA A LUMO0014AA Rev A Version 1 1 48 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Additional Transceiver information Board Level Pinout J1 14 pin 2 00mm centers Samtec TMM series TMM 107 01 G D SM options Mates with Samtec CLT SMM MMS SQT ESQT SQW TLE TCSD TLSD series 1 Input Power 3 0 5 25 VDC 2 Input Reset Active Low 100us pulse 3 Input Data Terminal Ready DTR TTL 4 Ground GND 5 Output Transmitted Data TxD 0 3 3 V TTU 6 Ground GND 7 Input Received Data RxD TTL 8 Output Carrier Detect CD 0 3 3V TTL 9 Input Request To Send RTS TTL 10 Output Clear To Send CTS 0 3 3 V TTL 11 Input Diag Received Data TTL 12 Output Diag Transmitted Data 0 3 3V TIL 13 Ground GND 14 Output Baud Clock T_3 3V output assumes greater than 3 3 V input voltage At 3V
9. 3 Repeat this step 3 more times hold Alt and type 0255 a total of 4 times Important Note If the password feature is enabled and the password is forgotten the transceiver will need to be returned to FreeWave to have the password disabled Time Divisible Multiple Access TDMA Time Divisible Multiple Access TDMA allows radios to do various operations on specific time slots This option is only used for peer to peer communications or when applications are very time specific For additional information about TDMA contact FreeWave Technical Support at 303 381 9200 A LUMO0014AA Rev A Version 1 1 43 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Additional Settings Some additional parameters are not shown in the Setup menu which may be used with FreeWave transceivers These additional parameters may be set with DOS based software The most common additional settings used by users are described below Low Baud Rates The transceiver s baud rate may be set to 300 600 or 900 baud Setup Timeout When enabled this mode invokes a timeout feature for the Setup Menu If the transceiver goes into Setup mode and does not receive legitimate menu selections within 3 to 5 seconds it will exit Setup and resume its previous mode For more information contact FreeWave Technical Support at 303 381 9200 AA A LUMO0014AA Rev A Version 1 1 44 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Factory Def
10. 38 5 Repeater EE 39 ENEE E bedeelege eege 39 TEE 39 9 1 PPS Erablde De AA 39 ERT 40 RE 40 A A A HE eee TR 40 ge ER EE 4 EEC MA o des onsen eR 4 OVERLAPPING MULTIPOINT NGrwopkg sse eee eee ee ee 42 PASS WORDS NO 43 SETTING A PASSWORD coignear a cd Shacsesdvdadecencteuesaccuacecedceedcct van Ea i Eoia aaa Oa SE SEa 43 Changing TEE 43 Disabling a PassWw rd EE 43 TIME DIVISIBLE MULTIPLE ACCESS TDMA eccccocincocanconicococonacionnnoiedc sauce ccasedceccncbbeecassni eae tsnena iei deg 43 ADDITIONAL SETTINGS wesiscssesssssosissassestscessosencnsencevenesosense sonvorasssbetseesaseconsentevsecsaseecs converteaseoosdeseesescesendevsnesssecsses 44 Bee EN 44 SETUP TIMEOUT RE 44 FACTORY DEFAULT SEETIN GS vaissccscasccescsisssteccessassssnessnscessecsennssesecsossssbocteasesseessesssesnessoksssteassesesssbecssassesscessnes 45 EXAMPLES OF DATA COMMUNICATION LINKS sss ssssssssssssss vesse essen sees resserrer neose erone roneo ones 46 ADDITIONAL TRANSCEIVER INFORMATION ccssssssssssssscsssscsssssssscssnscssscsssnscssssssssssssncssssssessssssssssssesees 49 BOARD LEVEL PINOU ereed eein eaa aaa EE EEE ASE EN E EEE EEE LEE REEE ETALEREN 49 900 MHZ TRANSCEIVER SPECIFICATIONS CONT e 51 MECHANICAL DRAWING AAA suuebanse eesaoveaneeuenedecsoepohneecasedseassasasbenene 52 FREEWAVE TECHNICAL SUPPORT eege seggt EE 52 ERRATA ASAS A V os S ueso vvs SvS ssor ro sorio 53 n M LUM0014AA Rev A Version 1 1 v D MM2 Spread Spectrum Wireless
11. Intermittent greeni t flash ash Green flash flash green ent flash flash red zo red zo red 205 red 205 red 205 red zo Mode 6 waiting for ATD Solid red Off e Blinking Solid red Off a Blinking red n a n a n a command brights red briobtg e Setup Mode Solid Solid Solid Solid Solid Solid Solid green green green green green green green A LUMO0014AA Rev A Version 1 1 10 h 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 s
12. 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 ressed ie usually indicates a three wire connection Rx Tx 8 Gnd Follow the steps below if the connection uses a three wire connection Click on the Disconnect button Select Properties from the File menu Click on the Configure button Change the Flow Control to None and click on the OK button Click on the OK button to close the Properties dialog box Click on the Call button Return the transceiver to Setup mode The Setup menu screen should appear A 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 Click on the Disconnect button Select Properties from the File menu Click on the Configure button Change the Parity to None and click on the OK button Click on the OK button to close the Properties dialog box Click on the Call button Return the transceiver to Setup mode The Setup menu screen should appear NOOPON gt NOOPON DABAN A DIANA For additional troubleshooting for HyperTerminal call FreeWave Te
13. changed to match the baud rate of the device that the radio is to be attached to e Press Esc to get back to Main menu 6 At the Main Menu press 3 e 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 e Press Esc to get back to Main menu 7 At the Main Menu press 5 e Set the Network ID value to any value between 1 and 4095 except 255 e Make sure this value is the same on every radio in the network Point to MultiPoint Operation LED s Condition Carrier Transmit Clear to Carrier Transmit Clear to Carrier Transmit TX Clear to Detect CD TX Send CTS Detect CD TX Send CTS Detect CD Send CTS Powered not linked Solid red Solid red Off a Solid red Off e Blinking red Solid red Off a Blinking bright dim brights bright red O Repeater and Slave linked Solid red Solid red Off a Solid Off e Solid red Solid Solid red Solid red to Master no data brightaii dim green brights greens dim bigne Repeater and Slave linked Solid red Solid red OH a Solid Off e Solid red Solid Solid red Solid red to Master Master sending brightait dim green brights greens dim bigne data to Slave Repeater and Slave linked Solid Solid red Intermittent Solid Intermitten Solid red Solid Solid red Solid red to Master Slave sending Green dm flash red 20 greens t flash bignas 0reenz bign
14. detect 19200 8 N 1 0 NUMBER REPEATERS In a MultiPoint network it is critical to transmission timing to configure this parameter correctly The value should be 0 if no Repeaters are in the network and 1 if any number of Repeaters are present This parameter should be set to the same value in all transceivers in a MultiPoint network Number Repeaters needs to be set to 1 when running Diagnostics from the Master 1 MASTER PACKET REPEAT In a Point to MultiPoint network Slaves do not acknowledge transmissions from the Master If Slaves did acknowledge all data transmissions in a large network the Master would soon become overwhelmed with acknowledgments from the Slaves Without acknowledgements 100 confidence every Slave has received every packet cannot be met To address this issue the user may modify the Master Packet Repeat setting assigning a value between 0 the packet is transmitted once to 9 the packet is transmitted 10 times For networks with solid RF links this parameter should be set to a low value such as 1 or 2 If a network has some weak or marginal links it HO A LUMO0014AA Rev A Version 1 1 37 h MM2 Spread Spectrum Wireless Data Transceiver User Manual should be set with higher values If a Slave receives a good packet from a Master more than once it will discard the repeated packets Similarly once a MultiPoint Repeater receives a good packet from the Master it will discard any further repeated packets In turn
15. for each serial Repeater For example If the latency between the Master and the first Repeater is 15 ms and 2 serial Repeaters are present the total latency will be 45 ms M R1 15 ms R1 R2 15 ms R2 S 15 ms 45 ms Note The RTS to CTS feature does not function in Point to Point networks that contain a Repeater If this feature is needed in such network the mode should be changed to Point to MultiPoint Note If DI RConnect is enabled and set to 2 the RTS to CTS feature will not work Note If the DTRConnect is enabled and set to 1 RTS to CTS mode takes precedence over the functionality of the CTS line on the Slave relating to the DTRConnect feature 8 RETRY Time Our The Retry Time Out parameter in a Slave or Repeater sets the delay the unit will wait before dropping the connection to a Master or Repeater in MultiPoint mode The factory default is set at the maximum of 255 The maximum setting means that if 1 packet in 255 is sent successfully from the Master to the Slave or Repeater the link will be maintained The minimum setting is 8 This allows a Slave or Repeater to drop a connection if less than 1 in 8 consecutive packets is successfully received from the Master On the other hand the function in the Master is effectively the same With a setting of 255 the Master will allow a Slave or Repeater to stay connected as long as 1 packet in 255 is successfully received at the Master The Retry Time Out parameter is
16. in the application note 5437 DTR to CTS Line Alarm Feature With an RTS to CTS setting of 1 the Master senses the RTS line prior to all scheduled packet transmissions If the state has changed the Master will then transmit a message to the Slave with the new status This transmission will occur regardless of data being sent If data is ready to be sent the RTS status message will be sent in addition to the data In Point to Point mode the Master will continue sending the new status message until it receives an acknowledgment from the Slave In MultiPoint mode the Master will repeat the message the number of times equal to the Master Packet Repeat value in the MultiPoint Parameters menu Master transmit times are completely asynchronous to the occurrence of any change of the RTS line the latency time from RTS to CTS is variable The Max and Min Packet Size parameters in the Radio Parameter menu determine this duration Setting both parameters to their maximum value of 9 will produce a maximum latency time of approximately 21 ms given no Repeaters in the network At the minimum settings for Max and Min Packet Size 0 the time will be approximately 5 9ms Please note that this latency can increase significantly if packets are lost between the Master and Slave In Point to MultiPoint mode no absolute guarantee is made that the state change will be communicated to all Slaves In Multipoint networks with Repeaters present the latency will be cumulative
17. input voltage signal will be O 3 V TTL _ 0 5V TTL 330 Q resistor in series _ 0 5V TTL Note See the following drawing for identification of pin numbers D 1 B 5 VDC 5 Interrupt DIR Ground TXD Ground 7 RXD S CD 9 RTS 10 CTS 11 Diag RX 12 Diag TX 13 Ground 14 Baud Clock us 4 w d b ps 1 1 9 5 3 1 14 PIN 2 ROW NON LOCKING LO CONNECTOR AA A LUM0014AA Rev A Version 1 1 49 h MM2 Spread Spectrum Wireless Data Transceiver User Manual MM2 900 MHz Transceiver Specifications Specification Frequency 902 to 928 MHz Transmit 10mW to 1W 30dBm See RF transmit power settings Dependant upon Output Power power supply voltage see below Maximum output at 3V 24 27dB Maximum output at 3 3V 27 35dB Range 60 miles Line Of Sight 0 dB antenna gain Modulation Spread spectrum GFSK 120 or 170 Kbps Spreading method Frequency hopping Occupied bandwidth 60dB 230 kHz Channel Spacing 230 kHz Receive Sensitivity 108dBm at 10 4 bit error rate IF Selectivity 40 dB att 230 kHz RF Selectivity 50 dB at 896 MHz 935 MHz System gain 138 dB Data transmission 115 2 kbps sustained throughput Data rate l l 57 6 kbps sustained throughput with Repeaters Error detection 32 Bit CRC retransmit on error Data encryption Substitution dynamic key Max link throughput 115 2 KBaud Data interface
18. networks is explained later in this chapter Using the Call Book offers both security and flexibility in determining how FreeWave transceivers communicate with each other Three settings must be made for two FreeWave transceivers to communicate in Point to Point mode 1 The Masters serial number must be listed in the Slave s Call Book or Slave Security is turned off in the Slave 2 The Slave s serial number must be listed in the Master s Call Book 3 The Master must be programmed to call the Slave The Call Book allows users to incorporate up to 10 FreeWave transceivers designate 1 to 4 Repeaters to be used with each transceiver and designate which Slave the Master will call To set the Entry to Call option enter C at the prompt followed by the menu number corresponding to that Slave To call any available Slave in the list enter C then enter A to direct the Master to Call All Note To call a Slave through one or more Repeaters that Slave must be called individually With Call All selected the Master will not connect with any Slaves through Repeaters The Master calls every Slave in the list and will connect with the first Slave that responds When calling through a Repeater the Master must first call that Repeater and establish a communication link with it prior to making contact with the Slave Edit Call Book 1 Selecting 2 Call Book from the Main Menu displays the following window 2 Select the appropriate number to edit b
19. through this Repeater will only receive the initial packet from the Master with no repeats Therefore if the packet is not received on the first try the Slave will not respond as expected 2 Max SLAVE RETRY The Max Slave Retry setting defines how many times 0 to 9 the Slave will attempt to retransmit a packet to the Master before beginning to use a back off algorithm defined by the Retry Odds setting Slave retries will stop when an acknowledgement is received from the Master 3 RETRY Opps While packets transmitted from the Master to the Slaves in a MultiPoint network are not acknowledged packets transmitted from Slaves to the Master are It is possible that more than one Slave will attempt to transmit to the Master at the same time Therefore it is important that a protocol exists to resolve contention for the Master between Slaves This is addressed through parameters 2 Max Slave Retry and 3 Retry Odds Once the Slave has unsuccessfully attempted to transmit the packet the number of times specified in Max Slave Retry it will attempt to transmit to the Master on a random basis The Retry Odds parameter determines the probability that the Slave will attempt to retransmit the packet to the Master a low setting will assign low odds to the Slave attempting to transmit Conversely a high setting will assign higher odds An example of how this parameter might be used would be when considering two different Slaves in a MultiPoint networ
20. 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 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 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 Call Book may be bypassed in the Slave by setting Slave Security to 1 See the Slave Security section later in this manual Point to MultiPoint Master 2 This mode designates the transceiver as a Master in MultiPoint mode This m
21. where communications need to be forced to follow a specific path the Subnet ID is quite useful Subnet ID is particularly helpful to force two Repeaters in the same network to operate in series rather than in parallel or if desired to force Slaves to communicate to a specific Repeater for load balancing purposes Two components exist with regard to the Subnet ID 1 Roy Subnet ID This setting identifies which transceiver a Repeater or Slave will listen to 2 Xmt Subnet ID This setting identifies the ID on which this device transmits and in turn which devices will listen to it The Xmt Subnet ID parameter is relevant for MultiPoint Masters and Repeaters only The default disable setting for both Rev and Xmt is F Notes A Master with firmware before x 40 will always transmit and receive on 0 With firmware of 2 40 and greater 900MHz the Master may be set to use alternate Subnet ID values Changing these settings on the Master is not recommended under normal circumstances In some MultiPoint Networks the FreqKey will be at the same setting for all transceivers In other networks where parallel Repeaters are introduced the FreqKey value will need to change See FreqKey and Repeater Frequency sections earlier in this manual for more information If both Rev Subnet ID and Xmt Subnet ID are set to 0 the Subnet ID will show Roaming in the menu This setting will allow a mobile Slave to roam from subnet to subnet and possibly from network to net
22. which it is connected In certain circumstances however this may actually result in slower data communications Data Parity A Six data word length and parity configurations are available to be used with FreeWave transceivers The default setting is O 8 N 1 and is the most commonly used serial communications protocol When Data Parity are selected from the Baud Rate menu a prompt to enter a value for Data Parity displays The following describes each option Menu Setting Data Bits Parity Stop Bits 0 8 None 1 1 7 Even 1 2 7 Odd 1 3 8 None 2 4 8 Even 1 5 8 Odd 1 Modbus RTU B Support for Modbus RTU protocol is available The default setting for Modbus RTU is 0 Not Enabled To enable the Modbus RTU mode 1 In the Set Baud Rate menu enter B and then select 1 2 In the Set MultiPoint Parameters menu set Master Packet Repeat to 3 RS232 485 C Should be set to 0 for the MM2 RS232 485 422 is not supported in this radio This radio is TTL only Setup Port D Note DO NOT change this setting unless the correct pinout is available for the new setting This setting determines which port Main or Diagnostics is used to enter the Setup Main Menu Menu Port Additional Information 1 Main Only The terminal is connected to the Main Data Port 2 Diagnostics Only The terminal is connected to the Diagnostic Port 3 Both Ports The terminal may be connected to either port The factory setting is based on the type
23. 02MHz to 928 MHz into smaller bands in this case 16 smaller bands each consisting of 5 7 and 8 Frequency channels depending on the frequency zone These 16 Zones are stored in a Word which is made up of 16 bits numbered 0 15 These bits when displayed LSB to MSB directly represent the zones that the radio will operate on from lowest frequency to highest A value of 1 in the bit sequence will instruct the radio to operate within the represented band Likewise a 0 value will instruct the radio to bypass the represented band This feature should only be used with the standard hop table Binary Zone Number LSB First Beginning Freq MHz Ending Freq MHz Number Of Channels 0 902 2464 903 8592 8 904 0896 905 4720 7 2 905 7024 907 0848 7 3 907 3152 908 6976 7 4 908 9280 910 3104 7 5 910 5408 911 9232 7 6 912 1536 913 5360 7 7 913 7664 915 1488 7 8 915 3792 916 7616 7 9 916 9920 918 6048 8 10 918 8352 920 2176 7 11 920 4480 921 8304 7 12 922 0608 923 4432 7 13 923 6736 925 0560 7 14 925 2864 926 6688 7 15 926 8992 927 8208 5 Frequency Zones are activated through the Setup menu To enable zoning from the main Setup menu of the radio 1 Select Menu 3 Edit Radio Transmission Characteristics 2 Select Option 0 FreqKey 3 Select F For More 4 Select Option 3 Frequency Zone Enter 1 to enable desired frequency zone and a 0 to disable de
24. 55 d LUM0014AA Rev A Version 1 1 31 h MM2 Spread Spectrum Wireless Data Transceiver User Manual The following table defines the Maximum packet size in bytes by way of charting the Min Packet Size setting versus the Max Packet Size setting where the RF Data Rate is set to 3 Using the default settings the actual maximum packet size in bytes is 172 Maximum Packet Size Definition with RF Date Rate of 3 Max Setting Min Setting 0 1 2 3 4 5 6 7 8 9 0 8 24 40 56 72 88 104 120 136 152 1 12 28 44 60 76 92 108 124 140 156 2 16 32 48 64 80 96 112 128 144 160 3 20 36 52 68 84 100 116 132 148 164 4 24 40 56 72 88 104 120 136 152 168 5 28 44 60 76 92 108 124 140 156 172 6 32 48 64 80 96 112 128 144 160 176 7 36 52 68 84 100 116 132 148 164 180 8 40 56 72 88 104 120 136 152 168 184 9 44 60 76 92 108 124 140 156 172 188 Referencing the default settings the Master will transmit up to 172 bytes on every hop If fewer than 172 bytes are transmitted the balance is allocated to the Slave s transmission plus the quantity in the Min Packet Size Setting For example if a Master transmits 100 bytes the Slave will then have a total of 116 bytes available 72 leftover bytes 44 Min packet size 3 XmiT RATE Two settings for the Transmit Rate parameter are available The setting for normal operation of the transceiver is a Transmit Rate 1 Transmit Rate 0 is useful
25. Celsius For proper operation a FreeWave transceiver must be in the temperature range of 40 to 85 C d LUMO0014AA Rev A Version 1 1 36 h MM2 Spread Spectrum Wireless Data Transceiver User Manual MultiPoint Parameters When installing MultiPoint networks it is important to do some up front planning Unlike Point to Point networks a Point to MultiPoint network requires several parameters are set consistently on all transceivers in the network This includes RF data rate Min and Max Packet Size and FreqKey Note If several independent MultiPoint networks are to be located in close proximity the planning becomes more critical In such cases it becomes very important to include as much frequency and time diversity as possible through use of different FreqKey Min and Max Packet Size and Hop Table settings In some instances the use of the MultiMaster Synch option may be required Edit MultiPoint Parameters Selecting 5 Edit MultiPoint Parameters from the main menu displays the following window MM2 User Manual Hyper Terminal DER File Edit View Call Transfer Help DS 3 28 Enter Choice MULTIPOINT PARAMETERS Number Repeaters Master Packet Repeat Max Slave Retry Retry Odds DTR Connect Repeater Frequency NetWork ID Reserved Mul tiMasterSync 1 PPS Enable Delay 255 Slave Repeater H Diagnostics 0 SubNet ID Roaming Radio ID Not Set Local Access H Radio Name c Exit to Main Menu Enter Choice Auto
26. Data Transceiver User Manual About Free Wave Transceivers CO FreeWave transceivers operate in virtually any environment where data communications occur AAA AAA AA A AAA LUMO0014AA Rev A Version 1 1 7 h 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 packet
27. E DELAY The 1 PPS Enable Delay option allows the radio network to propagate a 1PPS signal from the Master to all Slaves in a MultiPoint network When this parameter is enabled a properly generated pulse applied on the DTR line of the Master will provide a 1 PPS pulse on the CD line of any Slave in the network To use the 1 PPS Enable Delay feature the steps outlined below must be followed 1PPS Enable Delay Setup 1 The 1 PPS Enable Delay parameter must be set to 0 in the Master 2 The Master must have a 1 PPS pulse on the DTR pin 3 The 1 PPS Enable Delay parameter on the Slaves must be enabled Slaves are calibrated at the factory Calibrating a Slave in 1PPS Enable Delay mode 1 Trigger an oscilloscope on the 1 PPS pulse on the DTR line of the Master 2 Monitor the CD line of the Slave 3 If the timing on the Slave differs from the Master it may be adjusted via the value in the Slave s 1 PPS Enable Delay parameter The difference in time between each incremental integer value is 542 534nS Changing the parameter to higher values decreases the Slave time delay and changing the parameter to lower values increases the time delay When properly calibrated the CD line of a Slave radio will output a pulse that goes high for about 2mS in synch with the 1 PPS pulse on the Master radio The output on the Slave will occur within 20 microseconds of the input to the Master Note When 1 PPS is enabled the Master must have a 1 PPS pulse on its DT
28. ESIGN SUBJECT TO CHANGE reeWave Technologies Inc 1898 FLATIRON CT SUITE 28 BOULDER CO 80301 DATE 8 6 07 PCB FOOTPRINT men o FreeWave Technical Support For up to date troubleshooting information check the Support page at www FreeWave com FreeWave provides Technical Support Monday through Friday 8 00 AM to 5 00 PM Mountain Time GMT 7 Call toll free at 1 866 923 6168 or factory direct after hours at 303 381 9200 or email at moreinfo FreeWave com AI A 52 LUMO0014AA Rev A Version 1 1 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Errata Known issues Version 1 1 8 14 08 EZConfig 3 3 does not support the MMM2 The new FreeWave Tools Suite will support the MMM2 when it is released RF Data rate of 2 issue with Repeaters was resolved High Noise option is in the menu but it is not functional Version 1 5 2 2008 RF Data Rate of 1 does not work EZConfig does not support the MM2 RF Data Rate of 2 does not work with repeaters HO A LUMO0014AA Rev A Version 1 1 53
29. MM2 Spread Spectrum Wireless Data Transceiver User Manual Spt lll MM2 Spread Spectrum Wireless Data Transceiver User Manual Version 1 1 FreeWave Technologies Inc 1880 South Flatiron Court Boulder CO 80301 303 444 3862 303 786 9948 Fax www FreeWave com MM2 USER MANUAL Copyright 1995 2008 by FreeWave Technologies Inc All rights reserved Published 2008 OO LUMO0014AA Rev A Version 1 1 i h 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 unles
30. R pin otherwise the RF network will not function HO A LUMO0014AA Rev A Version 1 1 39 h MM2 Spread Spectrum Wireless Data Transceiver User Manual A SLAVE REPEATER The Slave Repeater mode allows a transceiver in a MultiPoint network to switch between Slave and Repeater functions When in this mode a transceiver will repeat any packets sent across the network as well as utilize the Data port This is an alternative to needing two radios at one site Note To operate a transceiver as a MultiPoint Slave Repeater the operation mode must be set to 7 MultiPoint Repeater and Slave Repeater set to 1 in the MultiPoint Parameters menu B DIAGNOSTICS This option provides diagnostics data to be viewed at the Master in parallel with application data The diagnostic program MUST be run from the Master transceiver Diagnostics requires the following Diagnostics set from 1 128 in the Master A second computer or serial connection to run the diagnostics software A diagnostics cable Available from FreeWave Technologies MA Diagnostics software Available on the User Manual and System Tools CD For more information on Diagnostics please contact FreeWave Technical Support at 303 381 9200 C SUBNET ID The Subnet ID function only works in MultiPoint Networks utilizing the Network ID option In a MultiPoint Network a Slave or Repeater will connect with the first Repeater or Master that it hears with the same Network ID However
31. TTL Power requirements Supply voltage 3 to 5 25 VDC 3 VDC 435mA Transmit current for full power at 100 duty cycle 3 3 VDC 635mA 5 VDC 760mA 3 VDC 120mA Receive current 3 3 VDC 135mA 5 VDC 125mA 3 VDC 17mA Idle current 3 3 VDC 19mA 5 VDC 37mA 3 VDC 5mA Sleep current 3 3 VDC 6mA 5 VDC 8mA Point to Point Operating modes Point to MultiPoint TDMA Operating environment 40 C 85 C 0 to 95 humidity non condensing At 100 receive success rate RF data rate setting of 2 A LUMO0014AA Rev A Version 1 1 50 h MM2 Spread Spectrum Wireless Data Transceiver User Manual 900 MHz Transceiver Specifications cont MM2 Data Port 14 pin PCB connector Enclosure Bare board Dimensions 9 6 mm H x 31 5 mm W x 50 8 mm L Weight 14 grams Power 3 5 25 VDC requirements Antenna MMCX female connector External antenna required FCC Identifier KNY 42182112519 IC Identifier 2329B FGR2 AI A LUMO0014AA Rev A Version 1 1 51 MM2 Spread Spectrum Wireless Data Transceiver User Manual Mechanical Drawing 093 DIAMETER MOUNTING HOLES FOR 2 56 HARDWARE 0 1630 weg p RF SHIELD DESCRIPTION LTR ORIGINAL RELEASE 5 6 02 JH Le one naue nst nos Joes H Hrs CURRENT BOARD REVISION 10 1 07 H D_ ADO LED DAS FINALIZE SHIELD HEIGHT 12 17 07 MMCX FEMALE RIGHT ANGLE ANTENNA CONNECTOR 14 PIN 2 ROW NON LOCKING 1 0 CONNECTOR 2mm CENTER TO CENTER PRELIMINARY D
32. ault Settings FreeWave MM2 900MHz transceivers are shipped from the factory with the following Default Settings Operation Mode Default Point to Point Master 0 Set Baud Rate Default CT A ermas Ke CEST AN COTTON TN CT TN Radio Parameters Default meae iS HOP TABLE VERSION o eHO REO OFFSET o da Goremment Rues JO aap Packerse e e mN Packerse e i o Stave SeCURTY o oss AN 9 Low POWER MODE o Ines S ameus A sst p E Ethernet Options Feta Wierk CI A II KI 6 ive UDP mode p Wel MultiPoint Parameters Default 0 NUMBER OF REPEATERS 1 MASTER PACKET REPEAT 2 MAXSLAVERETRY k CAT e jw oTRCONNECT o 6 REPEATER FREQUENCY o NETWORKID es im RESERVED A MULTIMASTERSYNC o 6 1PPS ENABLE DELAY Je lay SLAVEIREPEATER o mees le Size bk AA A LUM0014AA Rev A Version 1 1 45 MM2 Spread Spectrum Wireless Data Transceiver User Manual Examples of Data Communication Links FreeWave transceivers versatility allows data communication links to be established using a variety of different configurations The example below shows the most common and straightforward link a Master communicating to a Slave in a Point to Point link The example below shows how a link might be set up using a Repeater The Repeater may be located on a hilltop or other elevated structure enhancing the link from the Master to the Slave In this configuration it may be desirable to
33. cccsssscccssssccssssscccessseccesssseseess 9 POINT TO MULTIPOINT OPERATION LED 9 QUICK START ON A POINT TO POINT NETWORK j 0 sccccssssssccsssscccssssccesssccccsssecceessccecesscessssacccesssceces 10 POINT TO POINT OPERATION LED s trt ert tre ere ere ere ereere rerErerE rererere 10 CHOOSING A LOCATION FOR THE TRANSCEIVERS eeeessesessecssosesssoccesseceessecsessecssoceesseceessecesssessssoeeseceese 11 SETTING UP THE TRANSCEIVER USING HYPRR TERMINAL 11 SETTING UP THE TRANSCEIVER USING HxvppR TERMINAL 12 ACCESSING HYPERTERMINAL S SETUP Me 12 CONNECTING AND DISCONNECTING FROM HYPERTERMINAL cssssssscsececsesseececececeesssnecesececeessaeeeeececeeneneaeeeeeeeenes 15 TROUBLESHOOTING HYPERTERMINAL ccccccccececececececececececececececececeeececececececececececececececececececececececesecececececeseeseeeeeess 16 SETTING UP A TRANSCEIVER oj ccisissscssestsscosecsesssssstoessssievesvescessscensesvsteessscsssssesasseedsscoseeseessssessccssssseesssessessosestees 17 OPERATION MODE ca 18 SET OPERATION MODE tdi 20 BAUD RATE CN 21 SET BAUD RATE aida 21 CALDO a date 23 EDI CALE BOOK pad 23 Programming Point to Point Extended Call Book to Use Three or Four Repeaters sss esse 24 Programming Point to MultiPoint Call Book 25 Programming Point to MultiPoint Extended Call BOOK A 25 RADIO TRANSMISSION CHARACTERISTICS cccccececececececececececececececececececececececececececececececececececececececececececececececececevess 26
34. ch means only a Master which is in the Slaves Call Book may link to that Slave Slave Security may be disabled setting of 1 allowing any Master to call the Slave Slave Security has no effect in Point to MultiPoint networks where the Network ID is not set to 255 Slave Security must be set to 1 when the unit is operating in Mode 6 Slave Master switchable or a Point to Point network where the Slave may need to accept calls from more than 10 different Masters When Slave Security is set to d LUMO0014AA Rev A Version 1 1 32 h MM2 Spread Spectrum Wireless Data Transceiver User Manual 1 the transceiver will accept calls from any other FreeWave transceiver Additional network security measures may be taken to prevent unauthorized access such as changing default settings for FreqKey Hop Table or Frequency Zones 7 RTS To CTS Menu selection RTS to CTS in the Radio Parameters menu provides the option of allowing the RTS line on the Master transceiver to control the CTS line of the Slave This pass through control can be enabled in both Point to Point and Point to MultiPoint In MultiPoint networks the Master RTS line will control all Slaves CTS lines When enabled the CTS line ceases to function as flow control It is not recommended to enable this feature when operating at Baud rates above 38 4kB The default setting of O disables this function where as a setting of 1 enables RTS CTS control RTS CTS setting 2 is described in detail
35. chnical Support at 303 381 9200 HO A LUMO0014AA Rev A Version 1 1 16 h 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 MM2 User Manual HyperTerminal File Edit View Call Transfer Help Da gt Z B E MAIN MENU Firmware version D2 Version 8 651 02 29 2008 902 928 MHz Modem Serial Number 998 0155 Transceiver s unique serial number 0 Set Operation Mode 1 Set Baud Rate 2 Edit Call Book 3 Edit Radio Transmission Characteristics 4 Show Radio Statistics Setup Menu Options 6 8 Es Edit MultiPoint Parameters TDMA Menu Chg Password c Exit Setup Enter Choice Connected 0 06 30 Auto detect 19200 8 N 1 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 d LUMO0014AA Rev A Version 1 1 17 h MM2 Spread Spectrum Wireless Data Transceiver User Manual 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
36. cting 0 Set Operation Mode from the Main Menu displays the following window MM2 User Manual HyperTerminal DER File Edit View Call Transfer Help De ez 0 Show Radio Statistics Edit MultiPoint Parameters TDMA Menu Chg Password Exit Setup Choice SET MODEM MODE Modem Mode is Point Point Master Point Point Slave Point MultiPoint Master Point MultiPoint Slave Point Point Slave Repeater Point Point Repeater Point Point Slave Master Switchable Point MultiPoint Repeater Mirrorbit Master Mirrorbit Slave Ethernet Options sc Exit to Main Menu 0 1 2 3 4 5 6 7 A B F E Enter Choice Connected 2 09 02 Auto detect 19200 8 N 1 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 Menu A LUMO0014AA Rev A Version 1 1 20 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Baud Rate This setting is the communication rate between the transceiver and the instrument to which it is connected His important to note that this is independent of the baud rate for the other transceiver s in the network For example a pair of transceivers may be used in an application to send data from remote process instrumentation to an engineer s computer In this application t
37. de in the United States of America Printed in the United States of America AA A LUM0014AA Rev A Version 1 1 ii h 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 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 The MM2 is not UL approved at this time 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 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
38. e transceiver Many of these parameters must be maintained throughout the network for proper functionality Note This menu is only for the sophisticated user who has a good understanding of the principles of radio data transmission The settings for the Slave s and Repeater s not determined by the Master are RF Xmit Power Slave Security Retry Time Out and Hop Table Size Hop Table Version and Hop Table Offset Edit Radio Transmission Characteristics Selecting 3 Edit Radio Transmission Characteristics from the Main Menu displays the following window d LUMO0014AA Rev A Version 1 1 26 h MM2 Spread Spectrum Wireless Data Transceiver User Manual MM2 User Manual HyperTerminal File Edit view Call Transfer Help OS 33m Enter Choice RADIO PARAMETERS WARNING Do not change parameters without reading manual 0 FreqKey 1 Max Packet Size 2 Min Packet Size 3 Kmit Rate 4 RE Data Rate 5 RF Xmit Power 6 Slave Security 7 RTS to CTS 8 Retry Time Out 25 9 Lowpower Mode A High Noise B WCU Speed C RemoteLED Esc Exit to Main Menu G GO GO CD GG CO Kk Ca C H CO Enter Choice Auto detect 19200 8 N 1 FREQKEY IN 900 MHz TRANSCEIVERS Selection 0 in the Radio Parameters menu allows the user to modify the hopping patterns of the transceiver Fifteen choices are available for the FreqKey 0 9 and A E setting representing 15 different pseudo random hop patt
39. e bright data to Master RCV data red o or Solid red bignas Master with diagnostics Solid red Solid red Intermittent Intermitten Solid red Solid red Solid red program running bright dim flash red o t flash bignas bigne bright red 205 LUMO0014AA Rev A Version 1 1 9 h 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 flashO 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 Masters Call Book Enter the Masters Ser
40. er as the entry on line 0 PROGRAMMING POINT TO MULTIPOINT EXTENDED CALL BOOK In a MultiPoint network a Slave can be programmed to roam between Masters and Repeaters using the MultiPoint Extended Call Book function A Slave with its Call Book configured as below will communicate with any transceiver whose serial number appears in any of the three columns This functionality is enabled by setting Network ID to 255 then in the Call Book 999 9999 as the last entry in the first and second columns and Entry to Call to ALL HO A LUMO0014AA Rev A Version 1 1 25 MM2 Spread Spectrum Wireless Data Transceiver User Manual FreeWave Users Manual Hyper Terminal File Edit View Call Transfer Help MODEM CALL BOOK Entry to Call is ALL Number Repeaterl Repeater2 914 1010 914 1011 914 1012 914 1013 914 1014 914 1015 914 1016 914 1017 914 1018 914 1019 914 1020 914 1021 914 1022 914 2023 914 2024 914 3025 914 2026 914 2027 914 2028 914 2029 914 2030 914 2031 914 2032 914 2033 914 2034 914 2035 914 2036 999 9999 999 9999 914 2037 Change Entry to Use 0 9 or ACALL Exit to Main Menu r all zeros 000 0000 as your last number in list 5 lt nt 0 1 2 3 4 5 6 7 8 9 C Es nt C e E E Connected 0 00 24 Auto detect 19200 8 N 1 Radio Transmission Characteristics The Edit Radio Transmission Characteristics option allows the user to modify several different parameters in th
41. erns This is to minimize the interference with other FreeWave transceivers operating in the area For instance if 10 pairs of FreeWave transceivers are operating on different networks in close proximity setting a different FreqKey value reduces the chance that transceivers will hop to the same frequency at the same time If two networks were to hop to the same frequency the next hop would be to a different frequency for both networks Additional network separation can be gained by adjusting the Max and Min packet sizes options 1 and 2 After selecting 0 FreqKey select F for additional options The Hop Table Parameters will appear in the window From this menu more network differentiation can be defined by way of limiting the number and location of frequencies the transceivers may hop on in the 902 928 MHz band Note ALL transceivers in a network must have identical Hop Table settings to function properly d LUM0014AA Rev A Version 1 1 27 h MM2 Spread Spectrum Wireless Data Transceiver User Manual comm4 19200 HyperTerminal 101 x File Edit View Call Transfer Help FreqKey Max Packet Size Min Packet Size Kmit Rate RF Data Rate RF Xmit Power Slave Security RTS to CTS Retry Time Out 25 Lowpower Mode High Noise MCU Speed RemoteLED Exit to Main Menu Choice 0 Yee A A A a ee SP GD GO CH Gn Kek Kk 3 Kk mn nn P C3 CD D D GO d Ca GH E G A Kk S o L m bd EI
42. he baud rate for the transceiver on the instrumentation might be set to 9600 and the transceiver on the engineer s computer might be set to 57 600 Set Baud Rate 1 Selecting 1 Set Baud Rate from the Main Menu displays the following window MM2 User Manual HyperTerminal File Edit View Call Transfer Help DS 253 0B Enter Choice SET BAUD RATE Modem Baud is 230400 230 400 115 200 76 800 57 600 38 400 Data Parity MODBus RTU RS232 485 Setup Port Turn0ffDelay Turn0nDelay FlowControl Use break to access setup 0 c Exit to Main Menu er Choice Connected 2 20 18 Auto detect 19200 8 N 1 2 Select the appropriate baud rate or option by typing in the associated number or letter after Enter Choice As this is the baud rate for the data port it must match the baud rate of the device attached to the transceiver 3 When the selection is accepted the Set Baud Rate menu will refresh and display the updated mode 4 Press the Esc key to return to the main Setup menu Note The Setup Baud Rate will ALWAYS default to 19 200 Baud no matter what the data port Baud Rate is set to with the above noted exception HO A LUM0014AA Rev A Version 1 1 21 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Menu Option Description Actual Baud Rate The actual baud rate for the transceiver s data port selections 0 9 It is desirable to set the baud rate to the highest level supported by the device to
43. he transceiver from mismatched antennas or cables or loose connections between the transceiver and antenna A reading of 0 5 is good 5 30 is marginal 30 indicates that the connections should be inspected for loose connections and cable quality TRANSMIT CURRENT MA This measures the current draw of the transmitter in milliamps Refer to Transceiver specs for typical values d LUMO0014AA Rev A Version 1 1 35 h MM2 Spread Spectrum Wireless Data Transceiver User Manual AVERAGE NOISE LEVEL The average noise level indicates the level of background noise and interference at this transceiver and at each of the Repeaters in the link The number is an average of the noise levels measured at each frequency in the transceiver s frequency hop table The individual measurement values at each frequency hop channel are shown in the frequency table Pressing the Enter key when the Radio Statistics menu is displayed accesses the frequency table Ideally noise levels should be below 70 J units and the difference between the average signal level and average noise level should be 30 or more Noise levels significantly higher than this are an indication of a high level of interference that may degrade the performance of the link High noise levels can often be mitigated with band pass filters antenna placement or antenna polarization AVERAGE SIGNAL LEVEL The average signal level indicates the level of received signal at this transceiver and at each of
44. hen a FreqKey other than that of the Master is desired This condition occurs when parallel Repeaters in a network may have overlapping areas of responsibility The default setting of O causes the Repeater to use the FreqKey set in Menu 3 Note When Repeater Frequency is set to 0 the FreqKey setting must match the Master or Repeater acting as the Master for the transceiver 6 NETWORK ID NetWork ID allows MultiPoint networks to be established without using the Call Book The default setting of 255 enables the Call Book To enable NetWork ID the value must be set between 0 and 4095 excluding 255 Since NetWork ID does not use serial numbers MultiPoint Masters and Repeaters may be replaced without reprogramming all of the Slaves in the network Slaves will link with the first Master or Repeater that it hears that has a matching NetWork ID The Network ID function should be used in conjunction with the SubNet ID feature If necessary Without having the serial numbers in the Call Book a Slave may establish communications with different Masters though not at the same time This is very useful in mobile MultiPoint applications 8 MULTIMASTER SYNCH MultiMaster Synch is reserved for applications in both Point to Point and MultiPoint modes with concentrations of Master units where it is necessary to reduce interference between the Masters Please see application note 5412 Synch Colloc Master in Sync Mode for more information 9 1 PPS ENABL
45. ial 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 Slave Repeater Condition Carrier Transmit Clear to Carrier Transmit Clear to Carrier Transmit Clear to Detect CD TX Send CTS Detect CD TX Send CTS Detect CD TX Send CTS Powered no link Solid red Solid red i Solid red Off e Blinking red Solid red Blinking red bright ai bignas i bright e brights e Linked no Repeater Solid Intermitten i Solid Intermittent Intermittent n a n a sending sparse data Green t flash green flash flash red 205 OS red 205 red 205 Master calling Slave Solid red Solid red i Solid red Off a Blinking red Solid red Blinking red through Repeater bigne dim i bright e bignas e Master linked to Flashing Solid red i Solid red Blinking red Solid red Solid red Solid red Repeater not to Slave orange O dim i briohtg e bright dim brighta Repeater linked to Slave Solid Intermitten Intermittent Solid Intermittent Intermittent Solid Intermitt
46. if it is desirable to prevent unauthorized personnel from gaining access to the radio settings Setting a Password Selecting 8 Chg Password will display the following prompt New PW lt esc gt to exit To back out of the process and not enable the password press Esc To set a password type in exactly 4 characters The process can be canceled at any point by pressing the Esc key Once the 4 characters have been entered the following prompt will appear lt Enter gt to accept lt esc gt to quit To accept the password as entered and enable the feature press the Enter key The chosen password will be displayed on the line above The password is case sensitive and every keystroke is a character To quit the process and not enable the password press Esc CHANGING A PASSWORD Once the password feature has been enabled it is possible to change to a new password To enter a new password select 8 from the Main Menu At the Enter Security Code prompt enter the current password Once the password has been entered correctly the prompt to enter the new password will appear This is case sensitive and every keystroke is a character At any point this process may be cancelled by pressing Esc DISABLING A PASSWORD The process to disable the password is similar to the process to change the password However when prompted to enter the new password the follow the steps below 1 Hold down the Alt key and type 0255 2 Release the Alt key
47. ifies the transceiver in diagnostics mode E LocaL MoDE Option E allows the user to access an MM2 series Multi point slave with a local master This Master is not the network master Please see Application note 5457 for more information HO A LUM0014AA Rev A Version 1 1 41 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Overlapping MultiPoint Networks Overlapping MultiPoint networks may be set up effectively with FreeWave transceivers when several key parameters are set correctly Overlapping MultiPoint networks are defined as networks using different Masters which share or overlap in a specific geographic area It may also include co located transceivers configured into different networks See application note 5412 Synch Colloc Master in Sync Mode for more details Co located MultiPoint networks require the following parameters be unique for each network Network ID unless using Call Book Frequency Key in conjunction with Repeater Frequency Max Packet Size Min Packet Size For more questions about the installation of Point to MultiPoint networks please contact FreeWave Technical Support at 303 381 9200 HO A LUMO0014AA Rev A Version 1 1 42 h MM2 Spread Spectrum Wireless Data Transceiver User Manual Passwords Option 8 Change Password in the Main Menu allows the user to set a password that will prevent access to or changing of any of the radio s parameters This option is useful
48. k one with a strong RF link and the other with a weak RF link to the Master It may be desirable to assign higher Retry Odds to the Slave with the weaker link to give it a better chance of competing with the closer Slave s for the Master s attention When Retry Odds 0 after the Slave has exhausted the number of retries set in the Max Slave Retry parameter and still not gained the Master s attention the Slave s data buffer will be purged 4 DTR CONNECT With the setting of 0 in the Slave the transceiver will transmit when data is received A setting of 1 will form a Point to Point link with the Master when the DTR line is high With a setting of 2 the transceiver will transmit in bursts This mode is valuable when a network has many low data rate devices and it is desirable to increase overall network capacity Note If DTRConnect is set to 1 and the RTS to CTS function is enabled on the radio then RTS to CTS takes precedence over DTRConnect Note If DTRConnect is set to 2 and RTS to CTS is enabled then RTS to CTS is ignored The transceiver has two separate transmit and receive user data buffers These buffers are 2 Kbytes each In case of a buffer overflow the transceiver will output unpredictable data d LUMO0014AA Rev A Version 1 1 38 h MM2 Spread Spectrum Wireless Data Transceiver User Manual 5 REPEATER FREQUENCY Repeater Frequency must be set to a 1 in a Repeater w
49. nsceivers 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 to 5 25 VDC e An evaluation interface is available 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 s Use the following settings in connecting with hyper terminal e Connect to COMx where x is the number of the com port being connected to e 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 e The three LED S on the board should all turn green indicating Setup mode e The main menu will appear on the screen 4 Press 0 to get into the Operation Mode menu e Press 2 to set the radio as a point to MultiPoint Master e OR Press 3 to set the radio as a point to MultiPoint Slave e Press Esc to get back to Main menu 5 Press 1 in the main menu to change the Baud Rate e The baud rate must be
50. ode 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 Point to MultiPoint Slave 3 Point to Point Slave Repeater 4 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 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 be set up properly in the Master s call book Point to Point Slave Master Switchable 6
51. of transceiver A setting of 2 will be used with Ethernet products and Mirrored Bit products a setting of 3 will be used otherwise Setup mode is invoked by sending a U Shift U to the Diagnostics port or by pressing toggling the Set up button switch if available OEM boards may also enter Setup when Pin 2 is grounded The Ethernet reset button will NOT put the unit into Setup mode Ethernet transceivers must use the U option Please see the pinout chart later in this manual for a description of the Data and Diagnostics ports A LUMO0014AA Rev A Version 1 1 22 h MM2 Spread Spectrum Wireless Data Transceiver User Manual TurnOn Delay E TurnOnDelay Sets the delay between when the line drivers are turned on and when the data leaves the data port This setting can be adjusted for a 1 9mS delay TurnOff Delay Mode is not available on this device FlowControl F This menu specifies the hardware flow control for the Data port The options for 0 3 are described below Menu Port Additional Information 0 None Default Uses software control XON XOFF 1 RTS 2 DTR 3 DOT Call Book The Call Book is required to be used in Point to Point networks While the call book is an option in Point to MultiPoint networks the Network ID feature is strongly recommended in most applications The instructions provided in this section are for Point to Point mode only Use of the Call Book for MultiPoint
52. perTerminal reconnects to the transceiver AA A LUM0014AA Rev A Version 1 1 15 h 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 Click on the Disconnect button Select Properties from the File menu Click on the Connect To tab and verify that the correct Com port is selected Click on the OK button to close the Properties dialog box Click on the Call button 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 Click on the Disconnect button Select Properties from the File menu Click on the Configure button Change the Baud Rate to 19200 and click on the OK button Click on the OK button to close the Properties dialog box Click on the Call button Return the transceiver to
53. 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 e _Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the receiver is connected e 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 d LUM0014AA Rev A Version 1 1 iii h MM2 Spread Spectrum Wireless Data Transceiver User Manual Table of Contents ABOUT FREEWAVE TRANSCEIVERS csssccsssssscessscccsssscccsssccccessscccessssccsessncccscnscccesscscccsssceccessscaccsssecescesseess 7 CHOOSING POINT TO POINT OR POINT TO MULTIPOINT OPERATION see eee 8 QUICK START ON A POINT TO MULTIPOINT NETWORK sssscccssssscesssc
54. rge packet sizes are selected a certain amount of time wasted between each packet would be seen The following 3 tables provide the information to determine optimum setting values The default settings for Max and Min packet size and RF Data Rate are 8 9 and 3 respectively The following table defines the Minimum packet size in bytes by way of charting the Min Packet Size setting versus the RF Data Rate setting Using the default settings the actual minimum packet size in bytes is 44 Minimum Packet Size Definition Min Setting Min Packet Size Min Packet Size RF Data Rate 2 RF Data Rate 3 0 15 8 1 21 12 2 26 16 3 31 20 4 37 24 5 42 28 6 47 32 7 53 36 8 58 40 9 63 44 The following table defines the Maximum packet size in bytes by way of charting the Min Packet Size setting versus the Max Packet Size setting where the RF Data Rate is set to 2 Maximum Packet Size Definition with RF Date Rate of 2 Max Setting Min Seiting 0 1 2 3 4 5 6 7 8 9 0 15 37 58 79 101 122 143 165 186 207 1 21 42 63 85 106 127 149 170 191 213 2 26 47 69 90 111 133 154 175 197 218 3 31 53 74 95 117 138 159 181 202 223 4 37 58 79 101 122 143 165 186 207 229 5 42 63 85 106 127 149 170 191 213 234 6 47 69 90 111 133 154 175 197 218 239 7 53 74 95 117 138 159 181 202 223 245 8 58 79 101 122 143 165 186 207 229 250 9 63 85 106 127 149 170 191 213 234 2
55. rt rate Show Radio Statistics Radio Statistics in the Main Menu allows the user to view data transmission statistics gathered by the transceiver during the most recent session This is valuable when the user needs to know the signal strength and noise levels of the link Statistics are gathered during each data link and are reset when the next link begins See display below FreeWave Users Manual HyperTerminal File Edit Yiew Call Transfer Help Enter Choice MODEM STATISTICS Master Slave Distance m 0008882 Number of Disconnects Radio Temperature Antenna Reflected Power 1 Transmit Current mA 0000 Local Remotel Remote2 Remote3 J dBm dBm dBm dBm 44 112 57 96 5 100 73 12 Press lt Ret gt for Freq Table lt Esc gt to return to main menu_ Connected 0 00 43 Auto detect 19200 8 N 1 NUMBER OF DISCONNECTS Any time the link between the Master and the Slave is broken and the radios lose Carrier Detect it is recorded in the Number of Disconnects value The value indicates the total number of disconnects that have occurred from the time the transceiver is powered on until the radio is put into Setup mode Under ideal operating conditions the number of disconnects should be 0 One or more disconnects may indicate a weak link the presence of severe interference problems or loss of power to any of the radios in the link ANTENNA REFLECTED POWER This is a measurement of the transmitted power that is reflected back into t
56. s 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 RESTRICTED RIGHTS Microsoft and Windows are registered trademarks of the Microsoft Corporation ppANYWHERE 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 ma
57. s 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 Baud rate The amount of contention between Slaves Polled Slaves vs timed Slaves gt N 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 HO A LUMO0014AA Rev A Version 1 1 8 h 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 tra
58. sceiver reverts to the Lowpower Mode 5 If the transceiver has the DTRConnect option set to 1 or 2 and if the Lowpower Mode enabled set to 1 31 the RTS line on the transceiver must be asserted for the DTRConnect feature to operate properly A HIGH NOISE THIS FEATURE IS NOT CURRENTLY FUNCTIONAL IN THE MM2 The High Noise Option is useful in determining if out of band interference is affecting a radio link A setting of 1 will provide a reduction of gain in the front end circuit thereby decreasing the affect of any out of band noise The results will be seen as a lower signal value and a much lower noise value as found in Radio Statistics or Diagnostics If the noise is not reduced by a greater amount than the signal the interference is most likely an in band issue When a noise problem is shown to be helped by way of the High Noise option chances are that the noise may be further squelched by use of a Bandpass filter available for sale from FreeWave Technologies d LUMO0014AA Rev A Version 1 1 34 h MM2 Spread Spectrum Wireless Data Transceiver User Manual B MCU sPEED MCU Speed controls the speed of the Micro Controller Unit in the transceiver The default setting is O for low speed A setting of 1 is required for Ethernet and UDP operation The following table describes the MCU speed settings Setting Description Notes 0 Low speed Reduces current consumption 1 High speed Required for 230 KBaud data po
59. sired frequency zone Frequency Zone entries begin with O LSB and continue through 15 MSB AA A LUM0014AA Rev A Version 1 1 29 d MM2 Spread Spectrum Wireless Data Transceiver User Manual comm4 19200 HyperTerminal jol x Fie Edit View Call Transfer Help Del 918 alal ei Enter New Frequency Key 0 E F for more f Hop Table Parameters Hop Table Version H Hop Table Size 112 Hop Freq Offset 0 Frequency Zone 1111111111111111 Exit to Radio Menu Choice 3 L allow Zone Q to not 1 1 0 1 0 0 1 1 1 1 1 1 1 1 Vom Connected 1 21 33 ANS fiszoos n 1 SCROLL CAPS Mm Capture Print echo WARNING FCC regulations require a minimum of 50 separate channels be used within a hop pattern Use the above table to determine the number of frequency zones are required for legal communication Please contact FreeWave Technical Support at 303 381 9200 with questions AA A LUMO0014AA Rev A Version 1 1 30 h MM2 Spread Spectrum Wireless Data Transceiver User Manual 1 Max PACKET SIZE AND 2 MIN PACKET SIZE The Max and Min Packet Size settings and the RF Data Rate determine the number of bytes in the packets Throughput can be enhanced when packet sizes are optimized In Point to Point mode the Max and Min Packet Settings will not have material impact on throughput unless 115 2 KBaud is desired However this may have an impact on latency For example if small amounts of data are sent and la
60. ters To use 3 or 4 Repeaters program the Call Book with the Slave s serial number followed by the first 2 Repeaters On the next line enter 999 9999 as the transceiver to call When prompted for the Repeaters enter the third and fourth Repeaters in the link The illustration below depicts a Point to Point link where a Slave is called through 4 Repeaters In this example the Master is calling the Slave 571 3872 through Repeater 1 901 1234 then Repeater 2 910 0234 then Repeater 3 571 3456 and finally Repeater 4 571 4567 Entering of serial number 999 9999 in line 1 instructs the Master to continue calling through the Repeaters programmed on that line A LUM0014AA Rev A Version 1 1 24 h MM2 Spread Spectrum Wireless Data Transceiver User Manual FreeWave Users Manual HyperTerminal BEE Eile Edit view Call Transfer Help Da e SZ D2 E Enter Choice MODEM CALL BOOK Entry to Call is 00 Number Repeaterl Repeater2 571 3872 901 1234 910 0234 999 9999 571 3456 571 4567 000 0000 000 0000 900 0090 000 0000 000 0000 900 0090 000 0000 000 0000 Change Entry to Use 0 9 or A ALL c Exit to Hain Menu er all zeros 000 0000 as your last number in list ry Ent 0 1 2 3 4 5 6 7 8 9 C Es Ent lt Connected 0 00 22 Auto detect 19200 8 N 1 It is important that the Call Book slots 0 9 are filled sequentially starting with slot 0 When a Master is instructed to Call All
61. the Repeater will send the packet out to the next Repeater or Slaves the number of times corresponding to its own Master Packet Repeat setting Increasing the Master Packet Repeat setting will increase the probability of a packet getting through but will also increase latency in the network because each packet from the Master or Repeater is being sent multiple times Therefore it is important to find the optimal mix between network robustness throughput and latency In general a setting of 2 to 3 will work well for most well designed networks Note The Master Packet Repeat may be set to 0 if the user software is capable of or requires acknowledgment In this case if a packet sent by the Master and not received by the Slave the user software will control the retries as needed MASTER PACKET REPEAT IN MULTIPOINT NETWORKS WITH REPEATERS The Master Packet Repeat parameter must also be set in MultiPoint Repeaters since a Repeater will appear as a Master to a Slave Therefore the Repeater will send the packet out the number of times corresponding to its own Master Packet Repeat parameter If this parameter is set improperly the reliability of the overall network may be diminished For example if a Master s Master Packet Repeat setting is 3 the link between the Master and Repeater should be robust If the Repeater s Master Packet Repeat is set to 0 this could cause marginal communications between the Repeater and the Slaves The Slaves communicating
62. the Repeaters in the link For each of these the signal source is the transceiver that transmits to it The number is an average of the received signal levels measured at each frequency in the transceiver s frequency hop table The individual measurement values at each frequency hop channel are shown in the frequency table Pressing the Enter key when the Radio Statistics menu is displayed accesses the frequency table For a reliable link the margin should be at least 30 J units Low Average Signal Levels can often be corrected with higher gain antennas better antenna placement and or additional Repeaters Note Please consult the install manual for antenna and FCC requirements OVERALL Rcv RATE The Overall Receive Rate measures the percentage of data packets that were successfully transmitted from the Master to the Slave on the first attempt A number of 75 or higher indicates a robust link that will provide very good performance even at high data transmission rates A number of 15 or lower indicates a weak or marginal link that will provide lower data throughput An Overall Receive Rate of 100 will provide approximately 100 KBaud of bandwidth with an RF Data Rate setting of 3 and approximately 150 KBaud of bandwidth with an RF Data Rate of 2 These numbers are reduced approximately 50 if one or more Repeaters are in the network RADIO TEMPERATURE The Radio Temperature value is the current operating temperature of the transceiver in degrees
63. to qualitatively gauge signal strength in Point to Point mode When set to Transmit Rate 0 the transceivers will transmit back and forth continuously regardless if they have any actual data In Point to Point operation Transmit Rate 0 should be used only as a diagnostic tool and not for normal operation The strength of the signal may be gauged by the Clear to Send LED A solid red CTS LED indicates a strong signal a blinking CTS LED indicates a weaker signal 4 RF DATA RATE FreeWave transceivers have two settings for the RF Data Rate 2 3 RF Data Rate should not be confused with the serial port Baud Rate Setting 2 RF Speed of 153 6kbps should be used when the transceivers are close together and data throughput needs to be optimized Setting 3 RF Speed of 115 2kbps should be used when the transceivers are farther away and a solid data link is preferred over data throughput Note In MultiPoint networks the RF Data Rate must be set identically in all transceivers Any transceiver with an RF Data Rate different from the Master will not establish a link In Point to Point networks the Master s settings take precedence over the Slave 5 RF XmiT POWER For more information refer to the Installation Guides for the 900 MHz wireless modems 6 SLAVE SECURITY Slave security is a feature that allows Slave transceivers to accept transmissions from a Master not included in the Call Book The default setting is O Slave Security enabled whi
64. uch 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 HO A LUMO0014AA Rev A Version 1 1 11 h 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 our Tools Suite configuration utility that will be available soon 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 SS HyperT erminal Al ES File Edit View Go Favorites Help Links Address C Program Files 4ccessories HyperT erminal S38 a lt AT amp T Mail CompuServe hticons dil hypertrm dll
65. use an external Omni directional antenna at the Repeater Yagi antennas may be used at both the Master and Slave transceivers When a Repeater is used the RF throughput is cut in half The example below shows a link with two Repeaters between the Master and Slave With two Repeaters more flexibility in getting around obstacles and greater total range is possible Once again it would be desirable to use external Omni directional antennas with the Repeaters and attaching a Yagi to the Master and Slave to increase the range of the link When two Repeaters are used no further degradation in the RF throughput of the link is experienced AA A LUMO0014AA Rev A Version 1 1 46 MM2 Spread Spectrum Wireless Data Transceiver User Manual The example below shows a configuration where a Master routinely calls a number of Slaves at different times The Master is communicating with a transceiver designated as a Slave Repeater that is connected to a remote device Since this device is placed in an elevated location the transceiver may also be used as a Repeater when it is not used as a Slave At any time the Master may call any of the Slaves establish a connection and send and receive data gt The next example depicts a standard Point to MultiPoint network From the Master any data is broadcast to all three Slaves one of which receives it through a MultiPoint Repeater The data is in turn sent out of the serial port of each
66. useful when a MultiPoint network has a roving Master or Slave s As the link gets weaker a lower setting will allow a poor link to break in search of a stronger one Note Setting Retry Time Out to 20 is recommended in areas where several FreeWave networks exist This setting will allow Slaves and Repeaters to drop the connection if the link becomes too weak while at the same time prevent errant disconnects due to interference from neighboring networks While intended primarily for MultiPoint networks the Retry Time Out parameter may also be modified in Point to Point networks However the value in Point to Point mode should not be set to less than 151 d LUMO0014AA Rev A Version 1 1 33 h MM2 Spread Spectrum Wireless Data Transceiver User Manual 9 LowPowER MODE The Lowpower Mode feature allows a MultiPoint Slave to consume less power This is achieved primarily by dimming the transceiver s LED s When set to 2 through 31 the transceiver will sleep between slots For example at a setting of 2 the transceiver sleeps 1 out of 2 slots at a setting of 3 the transceiver sleeps 2 out of 3 slots and so on The following table shows the changes at different Lowpower Mode settings The actual current draw depends on many factors The table below gives only a qualitative indication of supply current savings A low number reduces lat d a high b t tion atency and a high number reduces current consumption Current Draw
67. work d LUM0014AA Rev A Version 1 1 40 h MM2 Spread Spectrum Wireless Data Transceiver User Manual This drawing depicts a Network in which Subnet ID s are used to force communications In this example Repeater1 must talk directly to the Master Repeater2 must talk directly to Repeater1 Slaves 1 2 and 3 are forced along the direction of the solid lines Slave4 may link to the first Master or Repeater it hears The respective Subnet ID diagram and settings are shown below Subnet ID Settings Repeater2 Transceiver Rev Subnet ID Xmit Subnet ID Other Information Master F F The Master uses 0 0 Master 0 0 The Xmit Subnet ID value may be set in the Master The default settings F F actually use 0 0 The Rev Subnet ID on the Master has no affect on the network Repeater1 0 1 A 0 will force the transceiver to link only to the Master Repeater2 1 2 Rev SubnetID 1 forces communication through Repeater1 Repeater1 transmits on SubnetID 1 Slave1 0 OorF Rev SubnetID 0 forces communication through Master Slave2 1 OorF Rev SubnetID 1 forces communication through Repeater1 Slave3 2 Oort Rev SubnetID 2 forces communication through Repeater2 Slave4 0 0 The 0 0 setting allows the Slave to link with the first Master or Repeater H hears with the correct NetWork ID D Rabio ID Option D allows a transceiver to be designated with an arbitrary user selectable 4 digit number which ident
68. y typing the associated line number at the cursor 3 Enter New Number will appear Enter the 7 digit serial number of the transceiver being called AA A LUMO0014AA Rev A Version 1 1 23 h MM2 Spread Spectrum Wireless Data Transceiver User Manual 4 The system will prompt for Repeater 1 s number If no Repeaters are being used press the Esc key skip step 5 Otherwise enter the 7 digit serial number of the Repeater 5 The system will then prompt for Repeater 2 s number Enter the 7 digit serial number of the second Repeater If only one Repeater is being used press the Esc key 6 The system refreshes the transceiver s Call Book menu with the new changes 7 Press the Esc key to return to the Main Menu MM2 User Manual HyperTerminal File Edit View Call Transfer Help MODEM CALL BOOK Entry to Call is ALL Number Repeater1 Repeater2 899 4111 899 4112 899 4113 000 0000 000 0000 000 0000 000 0000 000 0000 000 0000 000 0000 000 0000 Change Entry to Use 0 9 or ACALL Exit to Main Menu Connected 2 31 22 Auto detect 19200 8 N 1 Note When entering numbers into the Call Book Repeaters need only be defined in the Master Call Book The Slave Call Book only requires the Master s Serial number A repeater need not have anything listed in its Call Book PROGRAMMING POINT TO POINT EXTENDED CALL BOOK TO USE THREE OR FOUR REPEATERS In a Point to Point configuration FreeWave transceivers can utilize up to 4 Repea

Download Pdf Manuals

Related Search

Related Contents

14. RUTINAS DE PLOTEADO O DIBUJO  Frequency Inverter Convertidor de Frecuencia Inversor  MANUEL POST OP…RATEUR FR.  3D TV BOX - Clatronic  取扱説明書 太陽光発電用パワーコンディショナ  EXPLORATORYSTUDY - The Stanford University InfoLab  

Copyright © All rights reserved. Failed to retrieve file