CR-SEH & CR-SEH/X Wireless Ethernet Bridge User’s Manual 5375 Oakbrook Parkway Norcross, Georgia 30093 www.cirronet.
Important Regulatory Information Cirronet Product FCC ID: HSW-2411 IC 4492A-2411 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.
Declaration of Conformity Warning! The RLAN transceiver within this device uses a band of frequencies that are not completely harmonized within the European Community. Before using, please read the European Operation Section of the Products User’s Guide for limitations. 0889 is the identification number of RADIO FREQUENCY INVESTIGATION LTD - Ewhurst Park, Ramsdell RG26 5RQ Basingstoke, United Kingdom – the Notified Body having performed part or all of the conformity assessment on the product.
WARNING!! ≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡ For our Customers who wish to use this product in hazardous locations. This CR-SEH, CR-SEHX has been tested by Underwriters Laboratories Inc. for use in Class I, Division 2, Groups A, B, C, and D Hazardous Locations as specified in UL1604 and UL/CUL/Zones(UL2279). Such areas may have Explosive Gases. To install the CR-SEH, CR-SEHX in this environment the following steps must be implemented.
Table of Contents Introduction ....................................................................................................................... 1 Getting Started.................................................................................................................. 2 CR-SEH ............................................................................................................................ 3 Connectors ..................................................................................
CR-SEH Introduction The CR-SEH family of products from Cirronet Incorporated provides wireless Ethernet connectivity between networks located more than 5 miles apart. Built around the WIT2411 frequency hopping spread spectrum data modem, CR-SEH products provide a 10/100BaseT connection to Ethernet networks. CRSEH 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 CR-SEHs are Slave devices.
CR-SEH Getting Started The CR-SEH family of wireless Ethernet modems is easy to install and operate. In most instances, the only installation steps will be setting IP addresses, configuring one CR-SEH as the master and connecting the antenna, power and Ethernet cable. While the operation of the CR-SEH and CR-SEHX is the same, the installation and connection is slightly different. Please refer to the appropriate section below for connection and installation of your product.
CR-SEH CR-SEH Figure 1 identifies the various connectors and LEDs of the CR-SEH. Figure 1. CR-SEH Front Panel Diagram The RF connection on the CR-SEH is the antenna connector on the top of the CR-SEH. The antenna connector is a reverse TNC type connector. An antenna may be connected directly to this connector. Alternatively, an antenna may be located away from the CR-SEH using RF cable to connect the CR-SEH to the antenna. Cirronet does not recommend using RF cables longer than 5 feet.
CR-SEH The Console port is an RS-232 serial port that may be used to configure the CR-SEH. Connection to this port is made with the 9-pin D to RJ-11 serial cable included with the CR-SEH. This is useful when the default IP address of the CR-SEH cannot be used with the existing network preventing configuration through the IPHunter utility. See the section Configuring the CR-SEH for details of using this port. The power connector is a 2-pin terminal block connector.
CR-SEH CR-SEHX Figure 3 shows the various connectors and LEDs of the CR-SEHX. Figure 4 illustrates the remote radio assembly. Connection between the CR-SEHX enclosure and the remote radio assembly is made through the 16-pin remote radio connector on the front of the CR-SEHX. Digital signals, rather than RF signals are sent over the connecting cable which may be up to 300 feet in length. These cables may be ordered from Cirronet in lengths of 100 feet to 300 feet in 100-foot increments. Figure 3.
CR-SEH Figure 4. Remote Radio Assembly Note that the remote radio assembly should be mounted on a tower or building top oriented as in Figure 4. It is important that the RF connector on the remote radio assembly point to the ground to avoid any issues with rain water. Important Note: If an alternate source of power is used with the CR-SEHX, it must be limited to +12VDC +/-10%. Failure to meet this specification can result in damage to the remote radio assembly.
CR-SEH Status Indicators Figure 5 shows the status indicators on the CR-SEHX. The PWR indicator on the front panel indicates that power is applied to the CR-SEHX. The CR-SEHX does not have a power switch. Power is applied and removed to the CR-SEHX by connecting and disconnecting the power connector. The Ethernet LEDs include RXD, TXD and LINK. The LINK LED lights when a valid Ethernet connection is made. The CR-SEH is set up to use a straight through cable to connect to a PC.
CR-SEH Configuring the CR-SEH The network that the CR-SEH is connected to must be compatible with 10/100BaseT products. Before connecting a default configured CR-SEH to an active network that does not have a BOOTP or DHCP server, ask the network system administrator for an IP address for the CR-SEH that will not cause any problems on the network. Setting IP Addresses CR-SEHs are shipped from the factory with default settings that include a default IP address of 0.0.0.
CR-SEH Open IP Hunter by double-clicking on the file iphunter.exe on the CR-SEH CD. The following screen will appear. Click on the Search button to begin the search for Cirronet devices. Only Cirronet Ethernet devices will be displayed as shown below. Ethernet devices from other manufacturers will not be displayed, even if they have no IP address. Any devices found will be displayed on the screen along with the IP address (if any), the netmask the MAC address and the DHCP host name.
CR-SEH Double-clicking on a device with an IP address of 0.0.0.0 will bring up the following dialog box. Enter the desired IP address and the default netmask will automatically be entered as shown below. A new Host Name may be entered if desired; however, the MAC Address cannot be changed. Click OK and the IP address will be entered in the CR-SEH and will be displayed in the IP Hunter window as shown below.
CR-SEH HTML Setup (Browser Session) Once an address has been assigned, double-click on the IP number to launch an HTML setup session in a browser window. The login screen will display as shown below. Enter the default Username, “admin” and the default Password, “Cirronet” (case sensitive). (The password will be displayed as dots only for security purposes.) Click on OK and the main browser window is displayed.
CR-SEH System Status This dialog shows the Mode (Master or Slave) and Link (Up/Down) status of each device. (Clicking on Refresh should be used when System Settings have been adjusted to display current status.) System Settings This dialog allows the user to change the Hostname, set the Default Route, enter DNS entries or change the Outmax (upload/download ratio for the radio) setting. If the CR-SEH is to transmit data to devices not on its subnet, a default router must be specified.
CR-SEH Radio Settings This dialog identifies the radio and current operating mode. It also allows the user to configure radio parameters for the Network, SPID, Master Bandwidth, Max Slaves, HopSet, Power, Sync and Retries. Details on these settings are provided in the section on Radio Commands. Bridge Settings This dialog allows the user to set the Mode, (Master or Slave), any Filtering (see the section on Filtering below) and whether or not a Login is required.
CR-SEH Clicking on Enable IP address control and then Apply brings up the dialog below. Enable IP address Control This dialog is used to designate the Allowed IP addresses from which the SEH will accept a telnet session request. Simply enter an IP address in the “Allowed IP address” field and click “Add IP address. Only IP addresses designated by this dialog can access the device when IP address control is Enabled.
CR-SEH Note: If IP Address control has been enabled, the telnet session must be initiated from an IP Address that is on the Allowed IP Address list. A telnet window will open up. The first line is the version of the CR-SEH firmware followed by the prompt: SEM> If the CR-SEH is to transmit data to devices not on its subnet, a default router must be specified. To enter the default routing address use the route command. route add default {yyy.yyy.yyy.
CR-SEH CR-SEH Operation Overview CR-SEH devices are wireless Ethernet modems that perform bridging functions in point-to-point or pointto-multipoint configurations. CR-SEH products are designed to connect remote network segments together while keeping the data traffic between the network segments to a minimum. CR-SEH products use MAC-layer addresses to learn on which network segment a device is located. A master CR-SEH can connect up to 60 remote slave CR-SEHs.
CR-SEH When a master CR-SEH is powered on, it becomes active immediately, even if no slave CR-SEHs are detected. It will attempt to send packets addressed to devices that it thinks are not on its local network. When a slave CR-SEH is powered on, it listens for a master CR-SEH and attempts to register with the radio in the master. This detection and registration process typically takes 2 seconds. During this time, no packets will be sent or received over the RF link by the slave.
CR-SEH used to distinguish between networks of CR-SEHs and to prevent interference between the CR-SEH networks. If the master CR-SEHs are not located close to each other (> 30 feet or 10 meters apart), simply assigning different network numbers to the various networks of CR-SEHs will allow the networks to co-exist without interference. The network number selects one of 63 different hopping patterns, where the hopping pattern is the pseudo-random sequence of frequencies over which the CR-SEHs hop.
CR-SEH CR-SEH Command Set The CR-SEH supports a series of commands that allow for configuring the Ethernet interface as well as the radio parameters of the on-board WIT2411. These commands can be entered during a telnet session or by using the WinSEM utility when the SEM> prompt is displayed. The commands are grouped into System, Bridge, Security, Ethernet and Radio command sets. The commands are summarized here with detailed explanations following.
CR-SEH default Resets CR-SEH configuration parameters to factory default settings. This command does not reset the radio parameters. Use the radio default command to reset the radio parameters. See the section on Radio Commands for details. echo Toggles the user screen mode to echo characters typed by the user. Default is on. If echo is turned off, characters typed will not be displayed on the screen unless echoed by the terminal program. ip Sets the IP address of the CR-SEH.
CR-SEH Bridge Commands Command bridge help Description Displays help screen for command access Sets access code to allow slave CR-SEH onto to Master’s network. Slave accesscode must match accesscode of desired Master filter [disable, bcast, mcast, show] Selects filtering operation and level. login Enables/disables accesscode/password login authentication. Must be set in master and slave [enable|disable] master Sets CR-SEH as Master bridge password Sets login password.
CR-SEH CR-SEH Security Commands Command Description access help Displays command help screen console [enable|disable] Enables/disables password requirement for direct console communications.
CR-SEH Radio Commands Command Description hop [help Displays help screen for command fcc [enable|disable] Enable/disable FCC hop synchronization length Sets/displays hop dwell time in radio and CR-SEH sequence [43|15] Informs CR-SEH of number of frequencies in radio hop pattern set (Master only) slave Sets/displays the hop pattern to be used. This is required in countries with limited spectrum.
CR-SEH and is the default. 24 is the minimum value and 48 is the maximum value. The dwell time is changed to optimize the data throughput for a given installation. set selects a limited frequency band to be used. The default value is 1 which uses the entire frequency. For operation in France use a value of 8 and for Israel and Canada, use a value of 9. The CR-SEH radio also has 6 hop sets that avoid 802.11b channels. This allows the CRSEH to operate in environments with an 802.
CR-SEH The following commands are issued by typing radio and then the subcommand followed by the subcommand parameters if any. Command radio Description help Displays command list banner Displays power on banner for the radio in the CR-SEH defaults Resets the radio parameters to the factory shipped values masterbw [ Displays master to slave bandwidth in percentage 10..80] (Master only) maxslaves [ 0..60] (Master only) network [ 0..
CR-SEH network The radio in the CR-SEH 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. power This command sets the transmit output power level of the CR-SEH radio. The default is 1 which corresponds to +18dBm or 65 milliWatts.
CR-SEH Specifications Model Data Throughput Total over-the-air bandwidth Network Interface CR-SEH Network Topologies RF Output Power RF Modulation Frequency Range Operating Voltage Range Enclosure Dimensions Operating Temperature Humidity Licensing CR-SEH CR-SEHX 420Kbps full duplex point to point 1.23Mbps 10/100BaseT Point-to-Point or Multipoint 10/100mW with included whip antenna Frequency hopping, up to 64 user selectable hopping patterns 2400MHz to 2483.
CR-SEH Troubleshooting Ethernet Link LED is not on. Check the power LED on the CR-SEH. Check the Ethernet cable, making sure that it is fully connected. Check the gender of the Ethernet cable. The CR-SEH can drive CAT5 cable to a maximum length of 100 meters. If a longer cable length is needed a signal regenerating device must be placed in line. Cannot telnet to CR-SEH. Check the power LED on the CR-SEH. Check the Ethernet cable, making sure that it is fully connected.
CR-SEH 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.
