SEM910 /X /D /DX Wireless Ethernet Bridge User’s Guide
Important Regulatory Information Cirronet Product FCC ID: HSW-910M IC 4492A-910M 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.
Table of Contents Introduction ................................................................................................................................................... 1 Getting Started .............................................................................................................................................. 2 SEM910, SEM910D ...................................................................................................................................... 3 Connectors ......
SEM910 Introduction The SEM910 family of products from Cirronet™ Incorporated provides wireless Ethernet connectivity between networks located more than 5 miles apart. Built around the WIT910 frequency hopping spread spectrum data modem, SEM products provide a 10/100BaseT connection to Ethernet networks. SEM products operate in a point-to-point mode or a point-tomultipoint mode using a star configuration. The center of the “star” is the Master device and the remote SEMs are Slave devices.
SEM910 Getting Started The SEM 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 SEM as the master and connecting the antenna, power and Ethernet cable. While the operation of the SEM910/D and SEM910X/DX is the same, the installation and connection is slightly different. Please refer to the appropriate section below for connection and installation of your product.
SEM910 SEM910, SEM910D Figures 1, 2 & 3 show the various connectors and LEDs on the SEM910 and SEM910D. Figure 1. SEM910 Front Panel Diagram Figure 2. SEM910 Back Panel Diagram Figure 3.
SEM910 Connectors The RF connection on the SEM is the antenna on the top of the SEM910D. The antenna connector is a reverse-TNC male type connector. An antenna may be connected directly to this connector. Alternatively, an antenna may be located away from the SEM using RF cable to connect the SEM to the antenna. Cirronet does not recommend using RF cables longer than 5 feet. If more distance is required between the SEM and the antenna Cirronet recommends using the SEM910X/DX.
SEM910 SEM910X/DX Figures 4, 5 & 6 show the connectors and LEDs on the SEM910X & SEM910DX radios. Figure 7 illustrates the remote radio assembly. Connection between the SEM910X and SEM910DX enclosures and the remote radio assembly is made through the 15-terminal connector on the front of the radios. Digital signals, rather than RF signals are sent over the connecting cable which may be up to 300 feet in length.
SEM910 Figure 6. SEM910DX Front Panel Diagram Figure 7.
SEM910 The remote radio assembly has mounting holes to secure the antenna. The antenna is attached to the remote radio through the included 24-inch RF cable. If the antenna is not to be mounted on the remote radio assembly, connection between the remote radio and the antenna must be made with high-quality , loww-loss RF cable. Cirronet recommends limiting the length of the RF cable to 5 feet to minimize RF signal loss.
SEM910 Complete the assembly by placing the connector in the slot in one of the shell halves. Install the two retaining screws on both sides of the shell and through the holes on both sides of the connector; place the other shell half over the connector so the connector lies in the shell slot. Secure the connector shell halves with the nuts and bolts provided. Refer to the figures below. Pinned connector in bottom connector shell Completed connector with top connector shell attached.
SEM910 If a pin is accidentally installed in the wrong connector location, simply loosen the screw, remove the pin, re-insert it into the proper location hole and tighten the screw. Use the following color code to insert the pins into the connector: CONNECTOR PIN 1 2 3 4 5 6 7 8 CONDUCTOR COLOR Brown Orange/Black Black Blue Tan Pink White Red CONNECTOR PIN 9 10 11 12 13 14 15 CONDUCTOR COLOR Green Orange Violet Yellow White/Black Grey White/Red Care must be taken to follow the color code correctly.
SEM910 Configuring the SEM The network that the SEM is connected to must be compatible with 10/100BaseT products. Before connecting a default configured SEM to an active network that does not have a BOOTP or DHCP server, ask the network system administrator for an IP address for the SEM that will not cause any problems on the network. Setting IP Addresses SEMs are shipped from the factory with default settings that include a default IP address of 0.0.0.0 and a default configuration as a slave bridge.
SEM910 Open IP Hunter by double-clicking on the file iphunter.exe on the SEM910 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.
SEM910 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 SEM910 and will be displayed in the IP Hunter window as shown below.
SEM910 HTML Setup 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. System Status This dialog shows the Mode (Master or Slave) and Link (Up/Down) status of each device.
SEM910 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 SEM910 is to transmit data to devices not on its subnet, a default router must be specified. To set the default routing address, enter it in the Default Route field. Click on Apply to invoke changes, click on Cancel to discard.
SEM910 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. Selecting “No” grays out the Username/Access-code, Password and (Password) Verify fields. Selecting “Yes” allows entries to be entered into the fields. Details on these settings are provided in the section on Bridge Commands.
SEM910 Access Control Users This dialog allows the modification of logins and the ability to add new users. Note: Click on Save Settings to store the system configuration changes in non-volatile FLASH memory. The user may either click on “Reset” to reboot the processor, click on “Logout” to end the browser session or simply close the browser window.
SEM910 The SEM will report back the time it took to the save the information. Reset the SEM by typing: reset 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 result in the factory defaults being used. Filtering The SEM910 includes provision for filtering of multicast and broadcast packets.
SEM910 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 15 remote slave SEMs.
SEM910 the master automatically configures the radio in the master as a base radio. Similarly, configuring a SEM as a slave automatically configures the slave radio as a remote radio. When a master SEM is powered on, it becomes active immediately, even if no slave SEMs are detected. It will attempt to send packets addressed to devices that it thinks are not on its local network. When a slave SEM is powered on, it listens for a master SEM and attempts to register with the radio in the master.
SEM910 If the application has more slave devices, or if it is desirable to increase the throughputs of the slaves at the expense of the master SEM, contact Cirronet technical support for more details. Co-located Networks The radio architecture in the SEM allows multiple networks to be located in the same area without interfering with each other.
SEM910 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 WIT910. These commands can be entered during a telnet session or by using the WinSEM24 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.
SEM910 arp Manipulates the address resolution procedure table. This command is provided primarily as a debugging tool for setting up networks. ipaddr is the device IP address and eaddr is the physical Ethernet address of the device default Resets SEM 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.
SEM910 Bridge Commands Command bridge help Description Displays help screen for command access Sets access code to allow slave SEM 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 SEM as Master bridge password Sets login password.
SEM910 SEM Security Commands Command Description access help Displays command help screen console [enable|disable] Enables/disables password requirement for direct console communications.
SEM910 Radio Commands Command Description slave Displays help screen for command [ help disconnect Disconnects slave SEM with the radio serial number entered list] Displays slaves currently registered with the SEM (Master only) Displays help screen for command sync [help disable Turns sync off (default) enable Turns sync on master Sets SEM as sync master override Toggles master backup override settings Displays synchronization settings slave Sets SEM as sync slave Sets synchron
SEM910 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 SEM defaults Resets the radio parameters to the factory shipped values masterbw [ Displays master to slave bandwidth in percentage 10..80] (Master only) maxslaves [ 0..15] (Master only) network [ 0..
SEM910 maxslaves Sets a limit to the number of slaves SEMS that a master SEM can have registered simultaneously. The default is 15 but the parameter can range from 1 to 15. If more than maxslaves slave SEMs attempt to connect to the access point, they will be denied access. network The radio in the SEM has 36 preprogrammed hopping patterns or network numbers. By using different network numbers, nearby co-located networks can avoid interfering with each other’s transmissions.
SEM910 Specifications Model Data Throughput Total over-the-air bandwidth Network Interface SEM Network Topologies RF Output Power Receive Sensitivity RF Modulation SEM910 SEM910X SEM910D SEM910DX 150Kbps 172.
SEM910 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 device must be placed in line. Cannot telnet to SEM. Check the power LED on the SEM. Check the Ethernet cable, making sure that it is fully connected.
SEM910 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.
