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Cirronet SEM2410 Operation & User’s Manual

Cirronet SEM2410 Manual Online:

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Cirronet SEM2410 User Manual
Cirronet SEM2410 User Guide
Cirronet SEM2410 Online Manual

Text of Cirronet SEM2410 User Guide:

  • Cirronet SEM2410, Transmitter Module FCCID: HSW-2410M. Note: This unit has been tested and found to comply with the limits for a class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This e quipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful

  • Cirronet SEM2410, Table of Contents Introduction .......................................................................................................... 1 Getting Started ..................................................................................................... 2 Connecting the SEM ......................................................................................... 2 SEM Status Indicators....................................................................................... 3 Configuring th

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 1 M-2410-0007 Rev - Introduction The SEM2410 family of products from Cirronet Incorporated provides wireless Ethernet connectivity between networks located more than 5 miles apart. Built around the WIT2410 frequency hopping spread spectrum data modem, SEM products provide a 10BaseT connection to Ethernet networks. SEM products operate in a point-to-point mode or a point-to-multipoint mode using a star configuration. The center of the “star” is the Master device and the remote SEMs are Slave devices. Peer-to-peer communication is accomplished by using the master

  •  2000, 2001 Cirronet Incorporated 2 M-2410-0007 Rev - Getting Started The SEM family of wireless Ethernet modems are easy to install and operate. In most instances, the only installation steps will be setting IP addresses, selecting one modem as the master and connecting the antenna, power and Ethernet cable. Connecting the SEM Figure 1 identifies the v

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 3 M-2410-0007 Rev - using an RJ-11 connector. If the sync signals are required, one of the master SEMs must be designated as the sync master. See the section SEM/Radio Commands for details. If there are no co-located master SEMs, sync should be left disabled. The power connector is a 2-pin DIN type connector. The provided AC adapter provides a 9 volt power level to the SEM. The SEM can accept DC voltages ranging between 7VDC and 26VDC if alternative power supplies are to be used. Figure 2. SEM Front Panel Diagram The Configuration Port is an RS-232 serial port that may be used to configure the SEM. This is u

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 4 M-2410-0007 Rev - The network that the SEM is connecting to must be compatible with 10BaseT products. The SEM will not work if the network only supports 100BaseT or half duplex 10BaseT products. Before connecting a default configured SEM to an active network that does not have a BOOTP or DHCP server, ask the network system for an IP address for the SEM that will not cause any problems on the network. The SEM can be configured two ways. The first is through the serial port. The settings for the serial port are 38400 baud, 8 data bits, 1 stop bit, and no parity. SEMcom will automatically find the appropriate serial port

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 5 M-2410-0007 Rev - Store the changed configuration parameters in non-volatile memory with the save command: save<CR> The SEM will report back the time it took to the save the information. Reset the SEM by typing: reset<CR> The SEM can also be reset by cycling power. Whenever a reset is executed on the SEM, the telnet session will be lost. It will take the SEM about 30 seconds to reinitialize after a reset or after cycling power. Note: Failure to save and reset will resu

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 6 M-2410-0007 Rev - SEM Operation Overview SEM devices are wireless Ethernet modems that perform bridging functions in point-to- point or point-to-multipoint configurations. SEM products are designed to connect remote network segments together while keeping the data traffic between the network segments to a minimum. SEM products use MAC-layer addresses to learn on which network segment a device is located. A master SEM can connect up to 5 remote slave SEMs. The SEM2410 is a single channel device with an over-the-air data rate of 460Kbps providing 230Kb

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 7 M-2410-0007 Rev - always be configured for maximum data throughput, even at the expense of some throughput for the slaves. This is the factory default configuration. In frequency hopping technology, the shorter the hop duration, the lower the data latency but the lower the throughput. This is because the overhead required is the same regardless of the hop duration. Thus at shorter hop durations, the overhead is a larger percentage of the hop time. Longer hop durations provide more throughput b

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 8 M-2410-0007 Rev - TCP/IP Addresses Each SEM must be configured with a unique IP address that is appropriate for the network where the SEM will be used. The default IP address is 0.0.0.0. The IP address can be set using the ip command through the serial-port interface or automatically by a BOOTP or DHCP server. The ip command takes one or two parameters. The first parameter specifies the IP address for the SEM, and the second optional parameter, if present, specifies the netma

  •  2000, 2001 Cirronet Incorporated 9 M-2410-0007 Rev - address, one must be entered using the route command. See the previous section for details of the route command. If an IP address has previously been entered into the SEM but a DHCP server is to be used to assign an IP address, it will be necessary to set the IP address in the SEM to 0.0.0.0 us

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 10 M-2410-0007 Rev - SEM Command Set The SEM supports a series of commands that allow for configuring the Ethernet interface as well as the radio parameters of the on-board WIT2410. These commands can be entered during a telnet session or by using the WinSEM24 utility when the SEM> prompt is displayed. The commands are summarized here with detailed explanations following. Ethernet Commands Command Description arp –a -d <ipaddr> -s <ipaddr> <eaddr> Displays arp table Deletes arp entry Adds arp entry ip [ <ipaddr> <n

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 11 M-2410-0007 Rev - SEM/Radio Commands Command Description bridge [help filter [disable, mcast, bcast, show] master slave] Displays help screen for command Selects filtering operation and level. Sets bridge as a master Sets bridge as a slave hop [help length <hoplen> sequence [75|25] Displays help screen for command Sets/displays hop dwell time in radio and SEM Informs SEM of number of frequencies in radio hop pattern remote [ help list] Displays help screen for command Displays remotes currently r

  •  2000, 2001 Cirronet Incorporated 12 M-2410-0007 Rev - The sequence is the number of hop frequencies in the hop pattern in the radio in the SEM. The default is 75 for US/ETSI operation. All other frequency bands, as set in the radio by the pe command, have 25 frequencies in their hop patterns. This value is entered as a decimal number. The sequence needs to be m

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 13 M-2410-0007 Rev - SEM System Commands Command Description echo Toggles user screen echo mode help Displays command help screen reset Resets the SEM activating changed configuration parameters save Stores current configuration to memory sys [help outmax [1..208] Displays help screen for command Sets the maximum packet length version Diplays SEM firmware version echo Toggles the user screen mode to echo characters typed by the user. Default is on. If echo is turned off, characters typed will n

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 14 M-2410-0007 Rev - Radio Modem Configuration The “radio” command provides access to several sub-commands that are useful in configuring the WIT2410 in the SEM. The format for the radio commands is radio {A|B} <sub-cmd> [<sub-cmd-args>], where the {A|B} is either of the letters ‘A’ or ‘B’ used to specify to which radio the sub-command should be applied. The SEM uses only the radio ‘A’ designation; the ‘B’ designation is for future use. The command radio {A|B} banner can be used

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 15 M-2410-0007 Rev - network The radio in the SEM has 64 preprogrammed hopping patterns or network numbers. By using different network numbers, nearby co-located networks can avoid interfering with each other’s transmissions. Even if both networks tried to use the same frequency, on the next hop they would be at different frequencies. nwt can range from 0 to 63. param This command allows certain special radio parameters to be modified. These are only useful in debugging ci

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 16 M-2410-0007 Rev - For example, where SEMs are deployed one-half mile apart, a dx value of 04 should be entered. To enter this value, at the SEM> prompt type: radio a param dx 04<CR> Save this value by issuing the save command: save<CR> The dx value will take effect immediately. It is not necessary to issue a reset command. Note that it is possible to set a dx value for a range longer than what is supported by the antennas in use. To obtain the longest possible ranges outdoors, high-ga

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 17 M-2410-0007 Rev - Specifications Radio Specifications Model SEM2410 Data Throughput 230.4Kbps Total over-the-air bandwidth 460.8Kbps Network Interface 10BaseT SEM Network Topologies Point-to-Point or Multipoint Repeater Use Cirronet HN-2010 RF Output Power 10/100mW with included whip antenna, 400W EIRP with gain antenna RF Modulation Frequency hopping, up to 64 user selectable hopping patterns Frequency Range 2400MHz to 2483.5MHz Operating Voltage Range 7VDC to 26VDC Enclosure Ruggedized Aluminum Dimensions

  •  2000, 2001 Cirronet Incorporated 18 M-2410-0007 Rev - Troubleshooting Ethernet Link LED is not on. Check the power LED on the SEM. Check the Ethernet cable, making sure that it is fully connected. Check the gender of the Ethernet cable. The SEM can drive CAT5 cable to a maximum length of 100 meters. If a longer cable length is needed a signal regenerating de

  • Cirronet SEM2410,  2000, 2001 Cirronet Incorporated 19 M-2410-0007 Rev - Warranty Seller warrants solely to Buyer that the goods delivered hereunder shall be free from defects in materials and workmanship, when given normal, proper and intended usage, for twelve (12) months from the date of delivery to Buyer. Seller agrees to repair or replace at its option and without cost to Buyer all defective goods sold hereunder, provided that Buyer has given Seller written notice of such warranty claim within such warranty period. All goods returned to Seller for repair or replacement must be sent freight prepaid to Seller’s plant, provided that Buye

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