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Microwave Data Systems iNet 900 Quick Start Manual

Wireless ip/ethernet
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Net 900
MDS i
™
Wireless IP/Ethernet Transceiver
MDS 05-2873A01, REV. FCC
AUGUST 2001

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Summary of Contents for Microwave Data Systems iNet 900

  • Page 1 Net 900 MDS i ™ Wireless IP/Ethernet Transceiver MDS 05-2873A01, REV. FCC AUGUST 2001...
  • Page 2 DRAFT 6—8/30/01 QUICK START GUIDE Below are the basic steps for installing the MDS iNet 900 transceiver. Detailed instructions are given in the Section 3.0, INSTALLATION PLANNING, on page 5 of this manual. Install and connect the antenna system to the radio •...
  • Page 3 DRAFT 6—8/30/01...

  • Page 4: Table Of Contents

    DRAFT 6—8/29/01 TABLE OF CONTENTS 1.0 ABOUT THIS MANUAL..............1 2.0 PRODUCT DESCRIPTION ............1 2.1 Transceiver Features ................ 2 2.2 Spread Spectrum Radios— How Are They Different? ................3 2.3 Typical Applications ................3 Wireless IP/Ethernet LAN Connectivity .......... 3 Point-to-Point System ..............
  • Page 5 10.1 dBm-Watts-Volts Conversion Chart ..........39 Copyright Notice This Installation and Operation Guide and all software described herein are protected by copyright. Copyright 2001, Microwave Data Systems, Inc. All rights reserved. MDS i Net 900 Installation Guide MDS 05-2873A01, Rev. A...
  • Page 6 Customer Service Team using the information at the back of this guide. Microwave Data Systems Incorporated reserves its right to cor- rect any errors and omissions. Updated information may also be avail- able on our Web site at www.microwavedata.com.
  • Page 7 FCC Notice, U.S.A. MDS iNet 900 When Approved The MDS iNet 900 transceivers comply with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
  • Page 8 DRAFT 6—8/29/01 ment. 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 his own expense.

  • Page 9: About This Manual

    This manual does not cover all possible MDS iNet 900 user-controllable parameters and/or diagnostic tools. For an in-depth description of all of the features and controls of the MDS iNet 900, please read the MDS iNet Network Manager’s Manual, P/N 05-xxxxA01.

  • Page 10: Transceiver Features

    COM1 (Ethernet) port using HTTP. Figure 1. The MDS iNet 900 Transceiver The transceiver is housed in a compact and rugged cast-aluminum case that needs only be protected from direct exposure to the weather. It con- tains a single printed circuit board with all necessary components for radio operation and data communications.

  • Page 11: Spread Spectrum Radios-How Are They Different

    DRAFT 6—8/29/01 2.2 Spread Spectrum Radios— How Are They Different? The main difference between a traditional (licensed) radio system and the i Net transceivers is that these units “hop” from channel to channel many times per second using a specific hop pattern applied to all radios in the network.

  • Page 12: Dealing With Difficult Terrain

    “REPEATER ASSITED LANS” on page 28 for descriptions of basic repeater configurations. 2.4 Accessories The MDS iNet 900 transceiver can be used with one or more of the accessories listed in Table 1. Contact the factory for ordering details. Table 1. Accessories...

  • Page 13: Installation Planning

    DRAFT 6—8/29/01 Table 1. Accessories (Continued) DIN Rail Adaptor for mounting one MDS iNet 900 radio 03-xxxxA01 Mounting in a DIN standard equipment rack. Brackets Short-Range Short 1/2-wave antenna. Mounts directly onto 03-xxxxA01 Antenna the radio’s coaxial connector. Suitable only for short-range LANs, such as within a building or small campus.

  • Page 14: Site Selection

    Received Signal Strength Indication (RSSI) of –80 dBm or stronger will provide acceptable performance in many systems. While the equipment will work at lower signal strengths, this provides a “fade MDS iNet 900 Installation Guide MDS 05-2873A01, Rev. A...

  • Page 15: Conducting A Site Survey

    Table 2.iNet Front Panel LED Functions LED Label Activity Indication Link integrity OK Blinking Data TX/RX LAN not detected COM1 Not Defined (Console) Blinking Data TX/RX No data detected MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...

  • Page 16: A Word About Radio Interference

    Data Tx/Rx 3.3 A Word About Radio Interference The iNet 900 transceivers share frequency spectrums with other ser- vices and other Part 15 (unlicensed) devices in the USA. As such, near 100% error-free communications may not be achieved in a given loca- tion, and some level of interference should be expected.

  • Page 17: Antenna & Feedline Selection

    DRAFT 6—8/29/01 4. Multiple iNet 900 Access Point transceivers can co-exist in proxim- ity to each other with only very minor interference as long as they are each assigned a unique network name. Each network name has a different hop pattern. Additional isolation can be achieved by using separate directional antennas with as much vertical or horizontal separation as is practical.
  • Page 18 DRAFT 6—8/29/01 Invisible place holder Figure 5. Omnidirectional antenna for iNet 900 transceiver Invisible place holder Figure 6. Omnidirectional antenna for iNet 900 transceiver (mounted to mast) At Station Adapter sites and units in point-to-point LANs, a directional Yagi (Figure 7) antenna is generally recommended to minimize interfer- ence to and from other users.

  • Page 19: Feedlines

    Power considerations for point-to-mul- tipoint and point-to-point systems using the iNet 900 transceivers are discussed in the next sections. NOTE: In some countries, the maximum allowable RF output may be limited to less than 1 watt (For example, 100 mW /+20 dBm).

  • Page 20: Calculating System Gain

    Table 3 on page 11. For details on how to set the power level via the Ethernet/HTTP inter- face, See “Programming Via an HTTP/Web Browser” on page 22 for details. MDS iNet 900 Installation Guide MDS 05-2873A01, Rev. A...

  • Page 21: Installation

    Inspect all items for signs of damage and save all packing materials for possible re-shipment. Below are the basic steps for installing a iNet 900 transceiver. In most cases, these steps alone will be sufficient to complete the installation.
  • Page 22 The radio’s case is made of a durable DAMAGE cast-aluminum, however, the use of the wrong sized screws can dam- age the screw sockets on the cover. MDS iNet 900 Installation Guide MDS 05-2873A01, Rev. A...

  • Page 23: Step 2-Install The Antenna And Feedline

    To use a HTTP browser, connect to the Ethernet port and type in . The unit’s IP address can be found through the HTTP:// + unit IP address use of a terminal connected to the COM1 port. MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...

  • Page 24: Step 4-Measure & Install Primary Power

    4.5 Step 5—Review the Radio’s Configuration There are two essential settings for iNet 900 transceivers that should be known before placing the radio into service. They are: Radio Operating Mode—Access Point or Station Adaptor Network Name—Unique name of the radio network used to...

  • Page 25: Procedure

    DRAFT 6—8/29/01 There are additional settings for iNet 900 transceivers that may need changing before placing the radio into service. They are: Unit IP Address—Must be a unique number to allow for IP access through the Ethernet Port. Transmitter Power Output Level—Default is 1 Watt. Adjust as necessary for compliance with FCC guidelines.

  • Page 26: Step 6-Connect The User Data Equipment

    DRAFT 6—8/29/01 NOTE: It may be necessary to change your IP access to the local area network on which the MDS iNet 900 radio is attached. The radio’s IP address should be listed on the unit’s packaging slip. If it is not, you can find it out using the preceding procedure to communicate with the radio through the Port.

  • Page 27: Performance Optimization

    Port) to the iNet 900 radio and requesting the reports. RSSI In an iNet 900 system, RSSI readings are only meaningful when initi- ated from a Station Adaptor. This is because the Access Point station typically receives signals from several remote sites, and the RSSI would be continually changing as the Access Point receives from each remote in turn.

  • Page 28: Antenna Swr Check (Z? Major Revision Needed?)

    CONFIGURATION WITH TWO RADIOS 5.1 Overview Two MDS iNet 900 radios may be connected “back-to-back” through Ports to form a repeater station. (The cable must be a “cross-over” Ethernet cable for this to work). This configuration is sometimes required in a network that includes a distant Station Adaptor that would otherwise be unable to communicate directly with the Access Point station due to distance or terrain.

  • Page 29: Antennas

    6.0 PROGRAMMING There are no manual adjustments on the transceiver. Programming and control is performed remotely, using one of these methods: • HTTP (Browser) via the iNet 900’s Port ETHERNET MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...

  • Page 30: Programming Via An Http/Web Browser

    (See Figure 9 on page 16 for location.) NOTE: It may be necessary to change your IP access to the local area network on which the MDS iNet 900 radio is attached. The radio’s IP address should be listed on the unit’s packaging slip.

  • Page 31: System Configuration Screen

    Invisible place holder Figure 14. Radio/Modem Menu Items (Item discussed are outlined with red.) 1. This direction is a guess as the setting controls are not active on my prototype. MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...

  • Page 32: Programming Via Com1 Port & A Terminal Program

    6.2 Programming Via COM1 Port & a Terminal Program A serial-interface based Management Toolbox is available for local con- figuration of the MDS iNet 900 transceiver. Making the Connection Connect a personal computer’s communication port to the transceiver’s Port connector on the radio transceiver. (See Figure 9 on page 16 COM1 for location.) The default interface is EIA-232 at 115,200 bps with 8N1.
  • Page 33 (case-sensitive). Follow any changes to the pass- word or other parameters with an key to save the change. ENTER 1. This is a guess. Please verify value and function MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...

  • Page 34: Review And Changing Essential Parameters

    • Proper programming of the radio’s operating parameters, espe- cially Mode selection (Access Point/Remote) and IP Network Address • The correct interface between the radio and the connected data equipment (proper cable wiring, data format and timing). MDS iNet 900 Installation Guide MDS 05-2873A01, Rev. A...

  • Page 35: Led Indicators

    Check the antenna, feedline and connectors. Reflected performance. power should be less than 10% of the forward power ≈ reading (SWR 2:1 or lower). MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...

  • Page 36: Repeater Assited Lans

    For more detailed information on this configuration, see “TRADI- TIONAL REPEATER CONFIGURATION WITH TWO RADIOS” on page 20 1. What are the advantages and/or limitations of each of these two repeater con- figurations? MDS iNet 900 Installation Guide MDS 05-2873A01, Rev. A...

  • Page 37: Option 2-With Store-And-Forward Station

    Figure 17). This second arrangement overcomes the limitations of ter- rain by using a single-unit repeater to re-transmit the signals of all sta- tions in the network. The repeater is a standard MDS iNet 900 radio configured as an Access Point with data store-and-foreword.

  • Page 38: Technical Reference

    • Contact MDS for information on availability and governmental approvals in other countries UNIT & NETWORK MANAGEMENT • HTTP (Embedded Web server) • SNMPv1, MIB II, Enterprise MIB • Text-based menu on COM1 serial port • Telnet MDS iNet 900 Installation Guide MDS 05-2873A01, Rev. A...
  • Page 39 (at antenna connector): 0.1 to 1.0 watt (+20 dBm to +30 dBm) ±1.0 dB, set by user Duty Cycle: Continuous 1. Is this spelling correct or should it be Async? MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...

  • Page 40: Data Interface Connectors-Lan, Com1 & Data Ports

    COM1 DB-9) and the Port is DTE (male DB-9). COM2 CAUTION The iNet 900 transceiver meets U.S.A.’s FCC Part 15, Class A limits RADIO FREQUENCY INTERFERENCE when used with shielded data cables. POTENTIAL LAN (Local Area Network) Port—RJ-45 Ethernet Interface The LAN Port is used to connect the radio to an Ethernet network.

  • Page 41: Com1 Port

    (Viewed from the outside of the radio. Table 8. COM1 Port Pinout Functions Unused Receive Data (RXD) <—[ Out Transmit Data (TXD) —>[ In Unused Signal Ground (GND) Unused Unused Unused Unused MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...

  • Page 42: Com2 Port

    To simulate data traffic over the radio network, connect a PC or LAN to the Ethernet port of each radio. One of the MDS iNet 900 transceivers in this mini-network must be set to the Access Point Mode for proper operation.

  • Page 43: Using A Personal Computer To Configure The Inet Radio

    To connect a PC to the radio’s port use a DB-9M to DB-9F COM1 cross-over cable (MDS P/N 05-______A___). This cable may also be purchased from a computer retail store or mail-order company. MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...

  • Page 44: Glossary Of Terms

    DTE—Data Terminal Equipment. A device that provides data in the form of digital signals at its output. Connects to the DCE device. Equalization—The process of reducing the effects of amplitude, fre- quency or phase distortion with compensating networks. MDS iNet 900 Installation Guide MDS 05-2873A01, Rev. A...
  • Page 45 Frequency Hopping—The spread spectrum technique used by the MDS iNet 900 transceivers, where two or more associated radios change their operating frequencies several times per second using a set pattern. Since the pattern appears to jump around, it is said to “hop”...
  • Page 46 As a general guideline, reflected power should not exceed 10% of the forward power (≈ 2:1 SWR). Zone—See Frequency Zone. 1. Is this relevant to this product? MDS iNet 900 Installation Guide MDS 05-2873A01, Rev. A...

  • Page 47: Dbm-Watts-Volts Conversion Chart

    -136 10mW -137 2.25 .1µW -138 6.4mW .001nW -139 .500 -140 .01ƒW .445 5.75 .400 3.2mW .355 2.5mW 1.25 .320 2.0mW 1.18 .280 1.6mW 1.00 3.51 .252 1.25mW 0.90 MDS 05-2873A01, Rev. A MDS iNet 900 Installation and Operation Guide...
  • Page 48 DRAFT 6—8/29/01 NOTES MDS iNet 900 Installation Guide MDS 05-2873A01, Rev. A...
  • Page 49 The radio must be properly packed for return to the factory. The original shipping container and packaging materials should be used whenever possible. All factory returns should be addressed to: Microwave Data Systems Inc. Customer Service Department (RMA No. XXXX)
  • Page 50 175 Science Parkway, Rochester, New York 14620 General Business: +1 (716) 242-9600 FAX: +1 (716) 242-9620 Web: www.microwavedata.com...

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