WIT2410
2.4GHz Spread Spectrum Wireless Industrial Transceiver
Integration Guide
3079 Premiere Pkwy Ste 140
Duluth, Georgia 30097
www.cirronet.com
+1 (678) 684-2000
Page 1: ...WIT2410 2 4GHz Spread Spectrum Wireless Industrial Transceiver Integration Guide 3079 Premiere Pkwy Ste 140 Duluth Georgia 30097 www cirronet com 1 678 684 2000...
Page 2: ...same information Any other mode of operation using this antenna is forbidden Notice to users installers using the following fixed antennas with Cirronet RF products Andrews 24dBi parabolic dish Andre...
Page 3: ...on States Norway Switzerland Use of the WIT2410 in France When used in France the WIT2410 can only be operated with the France hopping pattern selected This is accomplished by setting the pe parameter...
Page 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...
Page 5: ...ifications 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 Connector Pinouts 47 9 3 Approved Antennas 47 9 4 Tec...
Page 6: ...sing 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 230400 bps Fast acquisition typically locks to ho...
Page 7: ...ugh 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 Sequence The two primary approaches to spread...
Page 8: ...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 where no data can be sent If these channels are...
Page 9: ...ncluding the U S for the purpose of allowing compliant spread spectrum systems to operate freely without the requirement of a site license This regulatory convenience alone has been a large motivation...
Page 10: ...e station the remotes from which transmissions will be received and not discarded Registration also allows tracking of remotes entering and leaving the network The base station builds a table of seria...
Page 11: ...et up as remotes In this configuration all communications take place between the base station and any one of the remotes Remotes cannot communicate directly with each other It should be noted that poi...
Page 12: ...ote device can distinguish between transmissions intended for it and transmissions intended for other remote devices This is necessary to identify the remote to which the base station should send data...
Page 13: ...mmand 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 bandwidth availability the TDMA operation...
Page 14: ...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 be 10 ms 2 3 ms 9 0 5 ms 10 32 8 460 8kbps...
Page 15: ...io systems which use direct sequence spreading this would imply a loss of contact on average of over 30 seconds per hour per station The WIT2410 overcomes this problem by hopping rapidly throughout th...
Page 16: ...nter 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 Sequence Mode command zc zc 0 Escape sequence...
Page 17: ...fer 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 might be 115 199 This is similar to a situatio...
Page 18: ...When operating the WIT2410 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 5 at the configuration mode prompt enter pe5 CR...
Page 19: ...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 packet becomes the effective minimum packet leng...
Page 20: ...NECT DISCONNECT mode 04 This is the packet format used by the WIT2400 This allows legacy software to operate the WIT2410 with a minimum of changes Note however that since different air data rates are...
Page 21: ...erial number When using protocol Mode 4 in the WIT2410 the static address of the WIT2400 is replaced with the current handle of the WIT2410 In point to multipoint configurations a remote s handle is n...
Page 22: ...e 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 length Packets with a data length longer than...
Page 23: ...k 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 base signal for the first time after power up...
Page 24: ...ive data from the radio to the user on or off In normal operation this signal should be asserted When negated the WIT2410 buffers receive data until RTS is asserted 0v 1 Receive data RxD enabled 3 3v...
Page 25: ...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 side so...
Page 26: ...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 volts at the radio Failure of the power suppl...
Page 27: ...o 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 return or a line feed 5 1 Serial Commands These com...
Page 28: ...nce Refer to the section on Protocol Modes for details on each format 5 2 Network Commands Network commands are used to set up a WIT2410 network and to set radio addressing and configuration Command D...
Page 29: ...ber 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 WIT2410 has 64 preprogrammed hopping patterns...
Page 30: ...rement 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 x dx max 0 8mi 0 1mi x dx 1 33km 0 17km x dx...
Page 31: ...0 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 212 bytes pn 01 3e base only Set Maximum Number...
Page 32: ...nsmit delay elapses before sending a data packet with less than this number of bytes Can be used to keep short intermittent transmissions contiguous In packet modes the length parameter in the data pa...
Page 33: ...the base station will assign remote transmit slots dynamically based on the number of remotes currently registered or whether the base station will assign remote transmit slots statically based on the...
Page 34: ...e in data stream escape sequence method of accessing Control Mode by transmitting the string wit2410 When this mode is set to 1 the escape sequence only works immediately after reset this is the defau...
Page 35: ...ect 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 Parameters Recall Factory Defaults Resets the...
Page 36: ...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 Commands zb 0 1 Banner Display Disable zc 0 2 Se...
Page 37: ...tware 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 interface rate for both modems is set at 9600 bps...
Page 38: ...OM 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 and Software CD and double click on wincom2 1 e...
Page 39: ...All perform the familiar Windows functionality in typical fashion The Options menu contains the selections Show Comm Errors which lists any errors encountered in the PC UART Check Comm Ports on Bootup...
Page 40: ...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 available COM ports will be listed in the menu bu...
Page 41: ...n 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 F1 key twice New parameter values that have b...
Page 42: ...turn 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 Similarly if the Hex Mode box is checked all charac...
Page 43: ...ng 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 pattern of characters Useful for testing F8 T...
Page 44: ...smit 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 third allows for checking of available Comm Po...
Page 45: ...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 all the data has been entered click on the Tran...
Page 46: ...115 200 kbps de asserts DTR waits 200 milliseconds asserts DTR waits 200 milliseconds sends the configuration mode escape sequence waits 200 milliseconds and then sends the m command to the radio What...
Page 47: ...he Capture File dialog displays with a bar showing loading progression Once the file has finished transmitting the Final Average Throughput and Bytes sent numbers will be displayed Finally the eighth...
Page 48: ...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 key which sends the wit2400 escape sequence If...
Page 49: ...o 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 data check that the base s default handle is...
Page 50: ...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 stream The nature of the packetized RF channel...
Page 51: ...tion 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 Range 2401 2495MHz Number of Channels 75 US Cana...
Page 52: ...DCE device whenever the WIT2410 asserts carrier When connecting to the WIT2410M S4 make sure that all of the inputs TXD CFG RTS and SLEEP are terminated for proper operation 9 3 Approved Antennas The...
Page 53: ...WIT2410 2000 2005 Cirronet Inc 48 M 2410 0000 Rev F 9 4 Technical Support For technical support call Cirronet at 678 684 2000 between the hours of 8 30AM and 5 30PM Eastern Time...
Page 54: ...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 CTS_3 3V C3 1 uF TXD_...
Page 55: ...WIT2410 9 6 1 Mechanical Drawing WIT2410M4 Pins Down 2000 2005 Cirronet Inc 50 M 2410 0000 Rev F...
Page 56: ...WIT2410 9 6 2 Mechanical Drawing WIT2410S4 Pins Up 2000 2005 Cirronet Inc 51 M 2410 0000 Rev F...
Page 57: ...ower 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 relied and shall not rely on any oral representat...
