WIT2410T
2.4GHz Spread Spectrum Wireless Industrial Transceiver
Integration Guide
3079 Premiere Pkwy Ste 140
Duluth, Georgia 30097
www.cirronet.com
+1 (678) 684-2000
Страница 1: ...WIT2410T 2 4GHz Spread Spectrum Wireless Industrial Transceiver Integration Guide 3079 Premiere Pkwy Ste 140 Duluth Georgia 30097 www cirronet com 1 678 684 2000...
Страница 2: ...rs using the following mobile antennas with Cirronet RF products MaxRad 8 dBi omni directional The field strength radiated by any one of these antennas when connected to Cirronet RF products may excee...
Страница 3: ...er to European Union Settings in this manual for details Canadian Department of Communications Industry Canada IC Notice Canadian Department of Communications Industry Canada IC Notice This apparatus...
Страница 4: ...uty Cycling 12 2 3 4 RF Flow Control Mode 12 2 3 5 Co Existing with 802 11b Networks 13 2 3 6 European Union Settings 13 3 PROTOCOL MODES 14 Note on Using Protocol Mode 4 16 3 1 1 Data Packet 17 3 1 3...
Страница 5: ...shooting 44 9 APPENDICES 46 9 1 Technical Specifications 46 9 1 1 Ordering Information 46 9 1 2 Power Specifications 46 9 1 3 RF Specifications 46 9 1 4 Mechanical Specifications 46 9 2 Serial Connect...
Страница 6: ...buffer ensures data integrity Digital addressing supports up to 64 networks with 62 remotes per network Low power 3 3v CMOS signals Simple serial interface handles both data and control at up to 2304...
Страница 7: ...lows the signal to be reconstructed even though part of it may be lost or corrupted in transit Figure 1 Narrowband vs spread spectrum in the presence of interference 1 2 Frequency Hopping vs Direct Se...
Страница 8: ...interleave with less interference Frequency hopping does carry some disadvantage in that as the transmitter cycles through the hopping pattern it is nearly certain to visit a few blocked channels whe...
Страница 9: ...een set aside at 2 4 GHz in most countries including the U S for the purpose of allowing compliant spread spectrum systems to operate freely without the requirement of a site license This regulatory c...
Страница 10: ...e registration process identifies to the base station the remotes from which transmissions will be received and not discarded Registration also allows tracking of remotes entering and leaving the netw...
Страница 11: ...point and all other radios in the network set up as remotes In this configuration all communications take place between the base station and any one of the remotes Remotes cannot communicate directly...
Страница 12: ...tized by the user application unless the remote device can distinguish between transmissions intended for it and transmissions intended for other remote devices This is necessary to identify the remot...
Страница 13: ...one remote using the point to point mode command of the radios will override this handle mechanism and always assign the remote the same handle 2 2 4 TDMA Operation For applications needing guaranteed...
Страница 14: ...of 32 kbps Counting the 1 7 ms overhead for the base packet and making use of the fact that our RF rate is 460 8 kbps we determine that the base slot requires approximately Each remote time slot will...
Страница 15: ...dio systems and also many spread spectrum radio systems which use direct sequence spreading this would imply a loss of contact on average of over 30 seconds per hour per station The WIT2410T overcomes...
Страница 16: ...ame way with a prompt To return to Data Mode enter the Exit Modem Control Mode command z or assert and deassert the Sleep pin There are three modes for the escape sequence controlled by the Set Escape...
Страница 17: ...on it is possible to overrun the receive buffer of the receiving radio For example a nominal 115 2Kbaud at the transmitting radio s host might really be 115 201 and at the receiving radio s host it mi...
Страница 18: ...nds for details 2 3 6 European Union Settings When operating the WIT2410T in France a limited frequency mode must be selected pe values of 5 6 or 7 may be used To select the limited frequency band pe...
Страница 19: ...t Protocol Mode command Base and remote radios can use protocol modes to insure that a packet is transmitted to the base without being broken up over multiple hops The data length value in the data pa...
Страница 20: ...are provided packet types supported Data CONNECT DISCONNECT mode 04 This is the packet format used by the WIT2400 This allows legacy software to operate the WIT2410T with a minimum of changes Note how...
Страница 21: ...are distinguished by their factory assigned serial number When using protocol Mode 4 in the WIT2410T the static address of the WIT2400 is replaced with the current handle of the WIT2410T In point to m...
Страница 22: ...e number from previous cell Note that while the packet length can be set to 212 the maximum number of bytes transmitted per hop is limited to the lesser of 212 or the length specified by maximum data...
Страница 23: ...ce number T transmit sequence number N network number of base Remotes must go through an automatic registration process when roaming from one base to another after loss of contact or when acquiring a...
Страница 24: ...Input Request to send Gates the flow of receive data from the radio to the user on or off In normal operation this signal should be asserted When negated the WIT2410T buffers receive data until RTS i...
Страница 25: ...eader If you have the OEM module interfaced to an RS 232 transceiver RTS and DTR need to be pulled high on the transceiver side In the evaluation unit RTS and DTR are pulled high on the transceiver si...
Страница 26: ...gram memory When the radio is first powered on there is an inrush current in excess of 250mA The power supply in the host must be capable of sourcing this current without the voltage falling below 2 7...
Страница 27: ...nd wna Most commands which set a parameter also have a option which causes the modem to respond with the current parameter setting e g wn Each modem command must be followed by either a carriage retur...
Страница 28: ...t overhead when calculating network performance Refer to the section on Protocol Modes for details on each format 5 2 Network Commands Network commands are used to set up a WIT2410T network and to set...
Страница 29: ...nk to any base regardless of the network number as long as the lockout key agrees By using different lockout keys the bases to which remotes link can be limited or segregated Set Hopping Pattern The W...
Страница 30: ...ptimal performance at 0 1 miles 162m Each increment of this parameter adds 0 1 miles 162 m to the working range Thus the optimal and max ranges are determined by optimal 0 1mi 0 1mi x dx 0 17km 0 17km...
Страница 31: ...4 B 2459 2485MHz avoids 11b channels 1 7 ph 00 fe base only Set Hop Duration 90H default 10ms pk 00 d0 Set Minimum Data Length 01 default pl remote only Get Maximum Data Length read only D4 default 21...
Страница 32: ...nt mode The radio will wait until the data transmit delay elapses before sending a data packet with less than this number of bytes Can be used to keep short intermittent transmissions contiguous In pa...
Страница 33: ...signment Mode base station only Sets whether the base station will assign remote transmit slots dynamically based on the number of remotes currently registered or whether the base station will assign...
Страница 34: ...ode Enables or disables the ability to use the in data stream escape sequence method of accessing Control Mode by transmitting the string WIT2410T When this mode is set to 1 the escape sequence only w...
Страница 35: ...efaults or recalling memory will not take effect until DTR is toggled or power to the radio is cycled Command Description m0 Recall Factory Defaults m Recall Memory m Store Memory m Display Modified P...
Страница 36: ...ta Length pr 00 ff Set Packet Attempts Limit pt 00 ff Set Data Transmit Delay remote only pv 0 1 Set Slot Assignment Mode base only pw 00 34 Set Base Slot Size base only px 0 1 Set ARQ Mode Status Com...
Страница 37: ...available as the WIT2410T does not support software flow control When the developer s kit is shipped from the factory one HN 510 is set up as a base station and the other is set up as a remote The in...
Страница 38: ...ss industrial transceivers or WIT radios WinCOM is located on the Manuals and Software CD included in the developer s kit Install WinCOM by navigating to the Software Tools directory on the Manuals an...
Страница 39: ...Under Edit Copy Paste Find search and Select All perform the familiar Windows functionality in typical fashion The Options menu contains the selections Show Comm Errors which lists any errors encounte...
Страница 40: ...on banner to be displayed unless the banner is disabled via the Banner Display Disable command zb0 The COM port and baud rate can be changed using the drop down menus on the bottom right All the avai...
Страница 41: ...red the radio will respond with Error as shown above Until the command to save the parameters m is issued the new parameters will only be valid until power is cycled or DTR is toggled by pressing the...
Страница 42: ...itations of Windows For example a carriage return will not return the cursor to the left side of the window but the character corresponding to 0xd value of the carriage return will be displayed Simila...
Страница 43: ...e F5 Toggles local echo If you are transmitting characters through one modem to another WIT2450 this allows you to see what you are typing F6 Toggles stream mode Causes WinCOM to transmit a repeating...
Страница 44: ...icking the Transmit button will send the Transmit String a single time There is no need to click Stop Clicking on the Transmit button a second time will have the string transmitted a second time The t...
Страница 45: ...e in the Handle window Type whatever data to be transmitted in the Data to Transmit window In the bottom window you will see the entire packet being built as the data is entered in the windows When al...
Страница 46: ...d rate of the PC COM that WinCOM is using to 115 200 kbps de asserts DTR waits 200 milliseconds asserts DTR waits 200 milliseconds sends the configuration mode escape sequence waits 200 milliseconds a...
Страница 47: ...pen and the file is transmitted immediately The Capture File dialog displays with a bar showing loading progression Once the file has finished transmitting the Final Average Throughput and Bytes sent...
Страница 48: ...the base station s signal and also assert its DCD signal 4 Access modem control mode for each unit To access modem control mode use the F1 key to toggle DTR to 0 and back to 1 and then press the F3 ke...
Страница 49: ...non zero link margin Carrier is detected but no data appears to be received Make sure that RTS is asserted to enable receive character flow In a point to point application if a remote is not receiving...
Страница 50: ...w characters Check that the transmitted data can get through under these conditions Sometimes this symptom is caused by an application that is explicitly dependent on the timing of the received data s...
Страница 51: ...47 no license required ETSI European Certification brETSI 300 328 no license required Rated RF Power 18 dBm 20 dBm effective radiated Line of site Range approx 6 10 of a mile w 2dB dipole Frequency Ra...
Страница 52: ...nd connect DCD from the HN 510 to the DTR and RTS inputs to activate the DCE device whenever the WIT2410T asserts carrier When connecting to the WIT2410TM S4 make sure that all of the inputs TXD CFG R...
Страница 53: ...23 22 24 C1 C1 C2 C2 R1OUTB T1OUT T2OUT T3OUT T4OUT T5OUT R1OUT R2OUT R3OUT R2IN R3IN R1IN VCC V V FORCEON FORCEOFF INVALID GND T4IN T5IN T2IN T3IN T1IN DTR_SLEEP_3 3V RS232 Interface D1 MBR0520L 1 2...
Страница 54: ...nal to the goods such as but not limited to power failure No suit or action shall be brought against Seller more than twelve 12 months after the related cause of action has occurred Buyer has not reli...
