RFM SEM910 Manuale utente

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. This equipment 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 interference in which case the user will be required to correct

the interference at their expense.

FCC s MPE Requirements

Information to user/installer regarding FCC s Maximum Permissible Exposure (MPE) limits.

Notice to users/installers using the 8.5 dBi Yagi antenna with the WIT910.

FCC rules limit the use of this antenna, when connected to the WIT910 module, to point-to-point applications only.

It is the responsibility of the installer to ensure that the system is prohibited from being used in point-to-multipoint

applications, omni-directional applications, and applications where there are multiple co-located intentional radiators

transmitting the same information. Any other mode of operation using this antenna is forbidden.

Notice to WIT910 users/installers using the following fixed antennas:

Cushcraft 8.5 dBi Yagi

The field strength radiated by this antenna, when connected to a transmitting WIT910, may exceed FCC mandated

RF exposure limits. FCC rules require professional installation of these antennas in such a way that the general

public will not be closer than 23 cm from the radiating aperture of this antenna. End users of these systems must also

be informed that RF exposure limits may be exceeded if personnel come closer than 23 cm to the aperture of this

antenna.

Notice to WIT910 users/installers using the following fixed antennas:

Cushcraft 6 dBi Monopole Cushcraft 3 dBi Omni Ace 2dBi dipole

The field strength radiated by any one of these antennas, when connected to a transmitting

WIT910, may not exceed FCC mandated RF exposure limits. FCC rules require professional

installation of these antennas in such a way that the general public will not be closer than 20 cm

from the radiating aperture of any of these antennas. End users of these systems must also be

informed that RF exposure limits may be exceeded if personnel come closer than 20 cm to the

apertures of any of these antennas.

Changes or modifications not expressly approved by the party responsible may void the users ability to

operate the equipment.

Table of Contents

Introduction ...................................................................................................................................................1

Getting Started..............................................................................................................................................2

SEM910, SEM910D......................................................................................................................................3

Connectors ................................................................................................................................................4

Status Indicators........................................................................................................................................4

SEM910X/DX................................................................................................................................................5

Attaching the Remote Radio Connector – SEM910X ...............................................................................7

Attaching Remote Radio Connector – SEM910DX...................................................................................8

Configuring the SEM...................................................................................................................................10

Setting IP Addresses...............................................................................................................................10

IP Hunter Utility........................................................................................................................................10

HTML Setup ............................................................................................................................................13

Console Port............................................................................................................................................16

Filtering....................................................................................................................................................17

DHCP.......................................................................................................................................................17

SEM Operation............................................................................................................................................18

Overview..................................................................................................................................................18

Security Modes........................................................................................................................................18

Point-to-Point Mode.................................................................................................................................18

Point-to-Multipoint Mode..........................................................................................................................19

Co-located Networks...............................................................................................................................20

SEM Command Set ....................................................................................................................................21

System Commands.................................................................................................................................21

Bridge Commands...................................................................................................................................23

SEM Security Commands .......................................................................................................................24

Radio Commands....................................................................................................................................25

Specifications..............................................................................................................................................28

Connectors ..............................................................................................................................................28

Indicators.................................................................................................................................................28

Power.......................................................................................................................................................28

Troubleshooting ..........................................................................................................................................29

Technical Support....................................................................................................................................29

Warranty......................................................................................................................................................30

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-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 SEM device to relay datagrams from one slave SEM device to another slave SEM device.

SEMs come in heavy duty, aluminum enclosures suitable for the rugged industrial environment.

The D models come in a DIN rail mount, rugged enclosure designed for factory and industrial

applications. The X models features a remote radio housed in a NEMA 4X/IP66 rated enclosure

that can be mounted outdoors up to 300 feet from the network connection. Communication

between SEM products is performed using the WIT910 over-the-air protocol.

SEM products are 802.3 compatible but not 802.11 compatible, provide 70Kbps full duplex data

throughput and are certified by the FCC.

The SEMs enjoy the same benefits of frequency-hopping spread spectrum technology that the

WIT910s do. Namely, the immunity to multipath fading and resistance to jamming that is

provided by changing frequency every few milliseconds.

The radios in SEM products include a robust over-the-air protocol. This protocol insures error-

free data through the use of a 24-bit CRC and ARQ to detect errors and to automatically request

a retransmission. All of this is transparent to the network which just sees complete error-free

data.

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.

Setting up a pair of SEMs requires the following steps:

•Enter IP addresses into each SEM

•Configure one SEM as the Master

The default settings in the SEMs are sufficient to allow connection to Ethernet networks and to

have the slave SEM connect with the master. Other steps you may want to take include:

•Enter a default route IP address if data is to be sent off the SEM’s subnetwork (See

Ethernet Commands)

•Enable one or more of the security features of the SEM (See Security Commands)

•Adjust the RF bandwidth allocation (See Radio Commands)

•Filter out broadcast and multicast packets (See Bridge Commands)

•Change the network number (See Radio Commands)

Instructions on setting up the SEMs are detailed in the Configuring the SEM section of this

manual. Details on the various operating modes and configurations can be found the SEM

Operation section.

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. SEM910D Front Panel Diagram

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. If the SEM910X/DX is not used, high-quality, low-loss RF feed line must be

used.

The 10/100BaseT Ethernet connector is the standard RJ-45 connector located on the front of the

SEM910D and the rear of the SEM910. The SEM is set up to use a straight through cable to

connect to a PC. If a straight through cable is used to connect the SEM to other devices through a

hub, the SEM must be connected to the uplink port on the hub. Both a straight-through and a

crossover Ethernet cable are included.

The SYNC IN and SYNC OUT signals are provided for special applications where multiple

master SEMs are co-located. The synchronizing signals are RS-485 levels and may be connected

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 Console port is an RS-232 serial port that may be used to configure the SEM. Connection to

this port is made with the 9-pin to RJ-11 serial cable included with the SEM. This is useful when

the default IP address of the SEM cannot be used with the existing network preventing

configuration through a telnet session. See the section Configuring the SEM for details of using

this port.

The power connector is a 2-pin terminal block connector. The provided AC adapter provides a

12 volt power level to the SEM. The SEM can accept DC voltages ranging between 12VDC and

30VDC if alternative power supplies are to be used.

Status Indicators

The PWR indicator on the front panel indicates that power is applied to the SEM. The SEM does

not have a power switch. Power is applied and removed to the SEM by connecting and

disconnecting the power connector.

The Ethernet LEDs include LINK, TXD and RXD. The LINK LED lights when a valid Ethernet

connection is made. The SEM is set up to use a straight through cable to connect to a PC. TXD

and RXD are indicators of Ethernet data activity. They indicate the transmission and reception of

data over the Ethernet connection. Note that these LEDs can be active even when the SEM is not

communicating with another SEM.

On a slave SEM, the RF Link LED indicates the SEM has established a connection with the

master SEM. When a slave SEM is powered on, it will take a few seconds for this LED to turn

on. On a master SEM the RF Link LED is on as long as any one Slave is linked. On the X and D

models, the XCVR OK LED indicates that the remote radio assembly is connected and operating

properly.

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. These cables may be ordered from Cirronet in lengths of 100

feet to 300 feet in 100-foot increments.

Figure 4. SEM910X Front Panel Diagram

Figure 5. SEM910X Back Panel Diagram

SEM910

Figure 6. SEM910DX Front Panel Diagram

Figure 7. Remote Radio Assembly

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.

Note: The remote radio assembly should be mounted on a tower or building top

oriented as in Figure 7. It is important that the RF connector on the remote

radio assembly point to the ground to avoid any issues with rain water.

Attaching the Remote Radio Connector – SEM910X

The figure below shows the pin numbering of the Remote Radio connector. The view provided is

looking into the side of the connector into which the pins will be inserted.

The cable pins are installed by choosing the appropriate conductor color and connector hole

location and inserting the pin into the hole until it locks into place. Verify the pin is locked into

place by gently pulling on the conductor.

If a pin is installed in the wrong connector location, use the extractor tool provided to remove the

pin. Insert the extractor tool into the connector hole such that the tool surrounds the pin. Gently

push the extractor tool completely into the hole. Remove the pin by gently pulling on the

conductor. If the pin does not come out easily, it is an indication the tool is not fully inserted. Do

not pull on the conductor forcefully as that can pull the conductor out of the pin.

Use the following color code to insert the pins into the connector:

CONNECTOR

PIN CONDUCTOR

COLOR CONNECTOR

PIN CONDUCTOR

COLOR

1 Brown 9 Green

2 Orange/Black 10 Orange

3 Black 11 Violet

4 Blue 12 Yellow

5 Tan 13 White/Black

6 Pink 14 Grey

7 White 15 White/Red

8 Red

Care must be taken to follow the color code correctly. An incorrectly assembled connector can

damage the radio or the card or both.

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