Cirronet SNAP2410 Manuale utente

SNAP2410

Network Access Point

Installation Guide

5375 Oakbrook Parkway

Norcross, Georgia 30093

www.cirronet.com

(678) 684-2000

Important Regulatory Information

Cirronet Product FCC ID: HSW-2410

IC 4492A-2410

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 24 dBi parabolic dish antenna in conjunction with all Cirronet

RF products.

FCC rules limit the use of this antenna, when connected to Cirronet RF products for 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 users/installers using the following fixed antennas, with Cirronet RF products:

Andrews 24dBi parabolic dish

Andrews 18dBi parabolic dish

Cushcraft 15dBi Yagi,

Mobile Mark 14dBi Corner Reflector,

Mobile Mark 9dBi Corner Reflector

The field strength radiated by any one of these

antennas, when connected to Cirronet RF

products, 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 2 m 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 2 m to the apertures of any of

these antennas.

Notice to users/installers using the following mobile antennas, with Cirronet RF products:

Mobile Mark 12dBi omni-directional,

Mobile Mark 9dBi omni-directional,

MaxRad 5dBi whip,

Cirronet Patch antenna,

Ace 2dBi dipole,

Mobile Mark 2dBi Stub

The field strength radiated by any one of these

antennas, when connected to Cirronet RF

products, 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

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.

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.

The WIT2410 to which this declaration relates is in conformity with the essential requirements

of the R&TTE directive 1999/5/EC and complies with the following standards and/or other

normative documents:

For Interfaces For RLAN Transceiver

EN 55022

EN 55024

EN 300 328

EN 301 489 -1, -17

EN 60950

Use Within the European Union

The WIT2410 is intended for use within the European Community States and in the following

non-European Union 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 to 1. Refer to European Union

Settings in this manual for details.

Canadian Department of Communications Industry Canada (IC) Notice

This apparatus complies with Health Canada’s Safety Code 6 / IC RSS 102.

"To prevent radio interference to the licensed service, this device is intended to be operated indoors and away from

windows to provide maximum shielding. Equipment (or its transmit antenna) that is installed outdoors may be

subject to licensing."

ICES-003

This digital apparatus does not exceed the Class B limits for radio noise emissions from

digital apparatus as set out in the radio interference regulations of Industry Canada.

Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant les limites applicables aux appareils

numériques de Classe B prescrites dans le règlement sur le brouillage radioélectrique édicté par Industrie Canada.

WARNING!!

≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡

For our Customers who wish to use this product in hazardous locations.

This SNAP2410 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/C-

UL/Zones(UL2279).

Such areas may have Explosive Gases.

To install this radio in this environment the following steps must be implemented.

1) The power supply used with the product must be a UL Class 2 rated device.

2) Contract a Qualified Licensed Electrician to install and run the power wiring from a

screw type, hard wired 12 VDC 1A Class 2 Output power supply in a UL Listed Box

and route a conduit to the radio which must be installed in a UL Listed Box suitable

for the environment. The conduit must be gas tight so no gases can flow through

conduit.

3) Any Cirronet products with outdoor radio transceivers (tower mounted) marked for

Hazardous Locations must have the interconnecting multi-conductor cable run in

approved conduit for the location. The cable must be in the conduit until out of the

Hazardous Location and the conduit must be gas tight so no gases can flow through

conduit.

4) Do NOT remove the power connector to the device while circuit is live. Disconnect

power only while circuit is dead, or the location is known to be non-hazardous.

Failure to do so, may result in a “Risk of Fire or Explosion”

Only then is the unit suitable for a hazardous location.

For more information on Hazardous Locations contact UL and ask for UL1604 requirements.

www.ul.com

RF Exposure

WARNING: End Users of these systems must be informed that RF exposure limits

may be exceeded if personnel come closer than 45 cm to the antenna aperture when

exceeding 9 dBi of gain in conjunction with the transceiver.

Repairs

Cirronet does not recommend field repairs of the radio equipment. Surface Mount

Technology (SMT) has been used in the production of the transceiver module, which

requires specialized training and equipment for proper servicing. The equipment

should be returned to the factory for any repair.

Table of Contents

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

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

Connecting the SNAP................................................................................................................2

SNAP Status Indicators.............................................................................................................3

Configuring the SNAP................................................................................................................4

European Union Settings...........................................................................................................5

European Union Use with Gain Antennas.................................................................................5

SNAP Operation ...........................................................................................................................6

Overview....................................................................................................................................6

DHCP.........................................................................................................................................6

BOOTP......................................................................................................................................7

Seamless Roaming....................................................................................................................7

Synchronization.........................................................................................................................7

SNAP System Commands.........................................................................................................8

Ethernet Commands..................................................................................................................9

SNAP Radio Commands.........................................................................................................11

Radio Commands....................................................................................................................13

TCP/IP Mode Operation..............................................................................................................15

Client Mode..............................................................................................................................15

Server Mode............................................................................................................................16

Assigning Remotes IP Addresses ...........................................................................................16

Assigning Remotes Port Numbers...........................................................................................17

TCP/IP Commands..................................................................................................................19

PPP Mode Operation..................................................................................................................21

PPP Commands......................................................................................................................22

AP Mode Operation ....................................................................................................................25

AP Mode Commands...............................................................................................................25

SNAP Datagram Protocol (SDP).............................................................................................26

SDP Header.............................................................................................................................26

SDP Messages........................................................................................................................27

Troubleshooting..........................................................................................................................30

Technical Support....................................................................................................................30

Quick Reference.........................................................................................................................31

SNAP System Commands.......................................................................................................31

Ethernet Commands................................................................................................................31

SNAP Radio Commands.........................................................................................................31

Radio Commands....................................................................................................................32

TCP Commands......................................................................................................................32

AP Mode Commands...............................................................................................................33

Appendix a..................................................................................................................................35

Specifications..............................................................................................................................37

Warranty .....................................................................................................................................38

SNAP2410

INTRODUCTION

The SNAP2410 from Cirronet Incorporated provides Ethernet connectivity to networks of

WIT2410 serial radios. Built around the WIT2410, the SNAP2410 provides a 10BaseT

connection to Ethernet networks and functions as base stations for remote devices containing

WIT2410 transceivers. The SNAP2410 allows non-Ethernet serial devices to appear as Ethernet

devices to network-based applications. By supporting seamless roaming, multiple SNAPs can be

connected to a network to provide practically unlimited coverage area.

Each SNAP2410 can support 62 simultaneous remotes. Each remote radio has a unique ID

number, so the number of remotes that can communicate with a SNAP is unlimited, subject to a

limit of 62 remotes at any one time.

The communication between the SNAP and the WIT2410 remotes is performed using the

WIT2410 over-the-air protocol. Thus the SNAP products are 802.3 compatible but not 802.11b

compatible. By using the 460Kbps over-the-air data rate and the WIT2410 protocol, the full

range of WIT2410 radios is realized, three times the range of most 802.11b products.

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

WIT2410s do. Namely, the immunity to multipath fading and resistance to jamming that is

provided by changing frequency every few milliseconds. Operating in the 2.4GHz ISM band,

SNAPs can be used license-free.

The SNAP has three modes of operation, TCP/IP, AP and PPP. The default mode is the TCP/IP

mode. In TCP/IP mode, the SNAP acts like any other network access point as either a client or

server device. This allows standard WinSocket®routines to be utilized. Remote devices are

setup to be identified by either an IP address or by a port number under the IP address of the

SNAP. The remote devices send and receive unformatted data to and from the SNAP which

performs the encapsulation and de-encapsulation of the unformatted data into and out of Ethernet

datagrams.

In AP mode the SNAP uses a special protocol mode called SDP (SNAP Datagram Protocol). In

order to send receive or transmit data from the SNAP, the application software must use this

protocol. The user may use the API roam library included with the SNAP to help shorten

software development.

The PPP mode is intended for applications where the remote device is equipped with a PPP

client. In these applications, the SNAP functions as a PPP host providing Internet Access to the

remote devices.

SNAP2410

GETTING STARTED

The SNAP2410 is easy to install and operate. In most instances, the only installation steps will

be setting IP addresses and connecting the antenna, power and Ethernet cable.

Setting up a SNAP2410 requires the following steps:

•Enter an IP address into the SNAP

•Configure the SNAP to act as a client to a server-based application or to act as a server to

a client application.

•Set remote WIT2410 devices to be identified to the application as individual IP addresses

or port numbers.

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

have remote WIT2410 devices connect with the SNAP. Other steps you may want to take

include:

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

Ethernet Commands)

•Change the network number (See Radio Commands)

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

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

Operation section.

Connecting the SNAP

Figures 1 and 2 identify the various connectors and indicators of the SNAP2410.

Figure 1. SNAP Rear Panel Diagram

The antenna connector is a TNC type connector. An antenna may be connected directly to this

connector. Alternatively, an antenna may be located away from the SNAP using RF cable to

connect the SNAP to the antenna. Cirronet does not recommend using RF

SNAP2410

cables longer than 5 feet. If more distance is required between the SNAP and the antenna, high-

quality, low-loss RF feed line must be used.

The 10BaseT Ethernet connector is the standard RJ-45 connector. The connector is wired to be

able to connect directly to an Ethernet hub using a straight-through cable. If it is desired to

connect the SNAP directly to a PC without a hub, the SNAP must be connected with a cross-over

cable.

The synchronizing signals are provided for special applications where multiple master SNAPs

are employed in an environment with slave SNAPs that are moving. The synchronizing signals

are RS-485 levels and may be connected using an RJ-11 connector. In most instances the

synchronizing signals are not required and may be left unconnected.

The power connector is a 2-pin DIN type connector. The provided AC adapter provides a 9 volt

power level to the SNAP. The SNAP can accept DC voltages ranging between 7VDC and

26VDC if alternative power supplies are to be used.

Figure 2. SNAP2410 Front Panel Diagram

The Configuration Port is an RS-232 serial port that may be used to configure the SNAP. This is

useful when the default IP address of the SNAP cannot be used with the existing network

preventing configuration through a telnet session. See the section Configuring the SNAP for

details of using this port.

SNAP Status Indicators

The PWR indicator on the front panel indicates that power is applied to the SNAP and that the

power switch is in the ON position.

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

data over the Ethernet connection. Note that these LEDs can be active even when the SNAP has

no remote radios registered.

The COLL indicator is illuminated whenever packets collide on the network segment to which

the SNAP is connected. As such, this is rough indicator of the level of traffic on the network

SNAP2410

segment. If this LED is glowing brightly on a continuous basis, the throughput of the SNAP may

appear to be reduced.

The LINK indicator when illuminated indicates a good connection to the Ethernet network. If

this LED is not on, it can indicate a cross-wired connection between the SNAP and the network.

It may also indicate a faulty cable connection.

Configuring the SNAP

SNAPs are shipped from the factory with no IP address, no DNS address and no route or

gateway address specified. If a BOOTP or DHCP server is not present an IP address must be

assigned to the access point before connecting it to a network. To allow IP traffic to leave the

particular subnet to which the access point is connected, the IP address of the gateway, bridge,

router or other device that allows access outside the subnet must be entered as the routing

address. If a DHCP server is present on the network, the IP, default route address and DNS

server address can be set up through it. Note that while a BOOTP server can set the IP address in

the SNAP, it cannot set the default router or DNS server IP addresses. See the section BOOTP

and DHCP for details.

The network that the SNAP is connecting to must be compatible with 10BaseT products. The

SNAP will not work if the network only supports 100BaseT or half duplex 10BaseT products.

Before connecting a default configured SNAP to an active network that does not have a BOOTP

or DHCP server, ask the network system administrator for an IP address for the SNAP that will

not cause any problems on the network.

The SNAP can be configured two ways. The first is through the serial Console port. The

settings for the serial port are 38400 baud, 8 data bits, 1 stop bit, and no parity. WinSNAP will

automatically find the appropriate serial port and configure the serial port settings for you. The

software will inform you of its progress and any problems that arise. After a few seconds the

SNAP firmware version is displayed followed by the TCP> prompt.

Once a valid IP address has been entered in the SNAP, a second method to complete the

configuration of the SNAP is through a telnet session. Most telnet programs work with the

SNAP. Windows has a telnet program that works with the SNAP. A telnet session can be

started by clicking on Start->Run if the TCP/IP client has been installed. For a SNAP with an IP

address of 192.168.0.254, enter the following information in the dialog box:

telnet 192.168.0.254

A telnet window will open up. The first line is the version of the SNAP firmware followed by the

prompt:

TCP>

To change the IP number of the SNAP, use the ip command.

ip <xxx.xxx.xxx.xxx> {yyy.yyy.yyy.yyy}

Where x is the new IP address and y is the optional netmask number.

To change the default routing address use the route command.

route add default <xxx.xxx.xxx.xxx> {yyy.yyy.yyy.yyy}

Where xis the IP address of the gateway device and yis the optional netmask number.

SNAP2410

Store the configuration parameters in non-volatile memory with the save command:

save<CR>

The SNAP will report back the time it took for the save. Reset the SNAP by typing:

reset<CR>

The SNAP can also be reset by cycling power. Whenever a reset is executed on the SNAP, the

telnet session will be lost. It will take the SNAP about 30 seconds to reinitialize after a reset or

after cycling power.

Note: The save and reset commands must be entered after modifying the default

configuration. Failure to do so will result in the factory defaults to be used.

European Union Settings

When operating the SNAP2410 in France or Spain, a limited frequency mode must be selected.

To select the limited frequency band at the SEM> prompt enter:

radio a param pe 1<CR>

Save this setting by typing:

save<CR>

The limited frequency operation will take effect immediately and will be saved into memory for

use when power is cycled.

European Union Use with Gain Antennas

Use of the SNAP2410 within the European Union is limited to a maximum transmit power

including antenna gain of 20dBm. The antenna supplied with the SNAP2410 is a 2dBi antenna.

The transmit power of the SNAP2410 in the default mode is 18dBm. Thus the supplied antenna

meets the EU limit. If gain antennas are to be used, the low power setting of the SNAP2410 must

be selected. This setting sets the transmit power at the antenna connector to 10dBm. In this

setting a maximum of 10dB of antenna gain may be used. To select low power mode, at the

command line prompt enter:

radio a param wp 0<CR>

To save this parameter in non-volatile memory type:

save<CR>

This parameter will take effect immediately and will be saved into memory for use when power

is cycled.

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