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IP920 Operating Manual: Chapter 2 Electrical/Physical

2. Electrical/Physical

2.0

Connectors

The IP920 connects to the host equipment through a standard DB9 serial port
or RS485/422 interface. All connectors and indicators are illustrated in
Figure 1

Microhard Systems Inc.

COM2

CFG

RSSI

RX SYS

Front Panel

ETHERNET

COM1

Vin +

GNG

RS485/422

Back Panel

Figure 1 Connectors and Indicators

The interface connectors and indicator lights are described below:

Содержание IP920

Страница 1: ...Manual IP920 Wireless Ethernet Bridge Serial Gateway Revision 0 90 January 11 2006 17 2135 32nd Ave N E Calgary Alberta T2E 6Z3 Phone 403 248 0028 Fax 403 248 2762 www microhardcorp com Microhard Sys...

Страница 2: ...IONAL WARRANTY Indemnification The Purchaser shall indemnify Microhard Systems Inc and its respective directors officers employees successors and assigns including any subsidiaries related corporation...

Страница 3: ...more information or would like to order an antenna WARNING MAXIMUM ERP FCC Regulations allow up to 36 dBm effective radiated power ERP Therefore the sum of the transmitted power in dBm the cabling los...

Страница 4: ......

Страница 5: ...Config 18 4 3 2 NTP Server Config 19 4 3 3 DHCP Server Config 20 4 3 4 Bridge Config 21 4 3 5 SNMP Agent Config 22 4 4 RADIO CONFIGURATION 24 4 5 COM1 AND COM2 CONFIGURATION 28 4 5 1 Serial Port Sett...

Страница 6: ...Default 43 5 INSTALLATION 45 5 0 OVERVIEW 45 5 1 ESTIMATING THE GAIN MARGIN 45 5 2 INSTALLING EXTERNAL CABLES ANTENNAS AND LIGHTNING ARRESTORS 47 A SERIAL INTERFACE 51 B RS485 WIRING 53 2 wire RS 485...

Страница 7: ...Framing added COM multipoint to multipoint 0 70 2005 11 22 Modified V1 0 18 Added Radio Description Added STP Control 0 60 2005 11 08 Modified V1 0 12 Change Parameter via FTP FTP Firmware Upgrade MAC...

Страница 8: ......

Страница 9: ...tication 14 Figure 4 webUI Screen Shot 14 Figure 5 System Configuration 16 Figure 6 Network Configuration 18 Figure 7 Local IP Config 18 Figure 8 NTP Server Config 19 Figure 9 DHCP Server Config 20 Fi...

Страница 10: ......

Страница 11: ...superior RF performance of this product makes it ideal for many applications Typical uses for this modem include SCADA Remote Telemetry Surveillance Traffic Control Industrial Controls Remote Monitor...

Страница 12: ...s IP Ethernet communication Bring virtually all PLCs RTUs and serial devices through RS232 RS422 and RS485 interface to IP network Industrial temperature specifications Supports point to point point t...

Страница 13: ...ither system integration or system design experience Throughout the manual you will encounter not only illustrations that further elaborate on the accompanying text but also several symbols which you...

Страница 14: ...a standard DB9 serial port or RS485 422 interface All connectors and indicators are illustrated in Figure 1 Microhard Systems Inc COM2 CFG TX RSSI RX SYS a Front Panel ETHERNET COM1 Vin GNG RxA RxB Tx...

Страница 15: ...I 4 DTR Data Terminal Ready I 5 Gnd Ground 6 DSR Data Set Ready O 7 RTS Request to Send I 8 CTS Clear to Send O RS 422 485 Port Alternatively this port is used to interface the IP920 to a DTE device w...

Страница 16: ...RJ 45 port A straight through CAT 5 cable should be used when connecting to a Ethernet hub on the other hand a crossover CAT 5 cable should be used when IP920 is connected to a DTE device a computer...

Страница 17: ...powered RX Sync LED Indicates the modem is synchronized and or is receiving valid packets of data See Section 2 2 for complete LED details TX LED Indicates the modem is transmitting data over the air...

Страница 18: ...ater During Sync Acquisition OFF OFF alternating 300ms ON Repeater When Synchronized ON for first portion of hop interval ON for second portion of hop interval RSSI mode based on packets received from...

Страница 19: ...hey have information to send Therefore if no data is coming back to the master then RSSI will never get updated at the master and the LED s will be off Table 8 RSSI mode operation Link Possibility RSS...

Страница 20: ...10 IP920 Operating Manual Chapter 2 Electrical Physical...

Страница 21: ...IP920 Operating Manual Chapter 2 Electrical Physical 11...

Страница 22: ...with colon is an item that can be edited or is just for display An item with is an item that has submenu or multiple choices 3 2 Serial Console COM2 is used as a system console by default it can also...

Страница 23: ...en shot when HyperTerminal is employed as the terminal program Figure 2 textUI Screen Shot In textUI typing the leading letter of a menu item can allow you to start editting a parameter or switch to a...

Страница 24: ...instead of a web based user interface Once an IP address is assigned to an IP920 unit dynamically or statically webUI can be accessed using any web browser such as IE Netscape and Mozilla etc from a...

Страница 25: ...er 3 User Interfaces 15 3 4 Network Management IP920 has a built in SNMP agent to facilitate Simple Network Management Protocol V1 V2 and V3 All objects specific to IP920 are hosted under and the priv...

Страница 26: ...Configuration Security Configuration System Information System Tools 4 2 System Configuration System configuration gives the ability to setup system time statically or allow IP920 to synchronize time...

Страница 27: ...system is ahead or behind UTC time A indicates local time is ahead of UTC time and a indicates local time is behind UTC time Before clicking on Synchronizes with SNTP Server SNTP server should have a...

Страница 28: ...nfiguration Both Ethernet MAC address and Wireless MAC address are also shown in the page This information can sometimes be useful for the administrator to setup the network or for troubleshooting 4 3...

Страница 29: ...Address Mode is set to static Only a valid static subnet mask address is acceptable IP Gateway Editable when IP Address Mode is set to static Only a valid static gateway address is acceptable 4 3 2 NT...

Страница 30: ...ntenance station for the whole radio network The DHCP server also manages up to 5 MAC address bindings With MAC address binging the DHCP server reserves certain IP addresses for specified MAC addresse...

Страница 31: ...the list temporarily Delete a selected MAC binding can be deleted from the list All the parameters take effective only when the page is submitted 4 3 4 Bridge Config Spanning Tree Protocol STP can be...

Страница 32: ...ives the agent ability to handle request from SNMPv1 and SNMPv2c clients This community name has read write priority SNMP V3 User Name Defines user name for SNMPv3 V3 User Read Write Limit Defines acc...

Страница 33: ...user s encryption password This is only valid when V3 User Authentication Level is set to AuthPriv SNMP Trap Version Select which version of trap will be sent in case failure or alarm Auth Failure Tra...

Страница 34: ...ote Up to 65533 Remotes may exist in a network all of which communicate with the common Master either directly or via Repeater s Remotes cannot directly communicate with one other The Master initiates...

Страница 35: ...he same Network This is required because the Master must be able to acknowledge each unit individually based on the Unit Address RF Output Power The Output Power Level determines at what power the IP9...

Страница 36: ...nsmitted power to 100mW for all units purchased with antennas with gain above 6dBi Retransmissions In point to multipoint mode the Master will retransmit each data packet exactly the number of times d...

Страница 37: ...s set to 65535 on all units inside an E2E network Roaming Address Only valid on remote repeater units This parameter defines which upstream unit this unit should synchronize with If a particular unit...

Страница 38: ...nfigured properly data from a serial port on one IP920 could output to the serial port on another IP920 Settings for two serial ports are mostly the same except minor differences COM1 is a dedicated d...

Страница 39: ...eeds to be issued at the right baud rate to make the port switch modes Channel Mode determines what serial interface shall be used to connect to external serial devices RS232 RS422 4 wire or RS485 2 w...

Страница 40: ...igure 14 CTS Output Data Framing Pre Data Delay ms See Figure 14 Post Data Delay ms See Figure 14 Data Mode defines serial data output framing Serial port service adds time gap between data frames to...

Страница 41: ...en the server detects character timeout or the buffer is full it packetizes the received frame and transmits 4 5 2 Serial Port Protocols The serial server can be set to use one of the following protoc...

Страница 42: ...station inside a LAN network Once a connection is established any received data from serial port is passed on to the remote TCP client otherwise serial data is simply dropped Local Listening Port a T...

Страница 43: ...ransmitted to the local serial port UDP Point to Multipoint P This protocol is set on the unit who sends multicast UDP packets Normally this unit is the master radio of a network Multicast IP Address...

Страница 44: ...t uses to send multicast UDP packets upon receiving data from serial port 224 1 1 1 Multicast address is a good example Multicast Port a UDP port this base station sends UDP packets to Multipoint stat...

Страница 45: ...ures cover from wireless data traffic security to device management security 4 6 1 Administrator Password To keep a system secure the administrator password should be modified to a different password...

Страница 46: ...the units more secure Figure 16 Change Password for Upgrade 4 6 3 Wireless WEP Encryption Network traffic over air can be encrypted by Wired Equivalent Privacy WEP encryption algorithm WEP encryption...

Страница 47: ...er but adds more overhead on wireless traffic Key Generation WEP key1 to key4 can be generated to the system upon Key Phrase when Key Generation is checked Otherwise WEP key1 to key4 can be chosen by...

Страница 48: ...displaying diagnostic and statistic information This information includes Ethernet Packet Statistics Radio Information COM1 Connection Status COM2 Connection Status Other information All this informa...

Страница 49: ...ded to IP920 through FTP System upgrade user is different from system administrator User name for system upgrade is upgrade Password is admin by default In case of a command line FTP client is used bo...

Страница 50: ...ndow from the system Change current directory to where the package file is located Start a FTP session as shown below Figure 20 Command Line Package Upgrade Provide proper user name and password to lo...

Страница 51: ...Cycle power on the IP920 unit with CFG button pressed and held down until SYS LED is observed in fast flash mode Start a FTP session as shown below the IP address is set to a default 192 168 1 39 Figu...

Страница 52: ...g through textUI or webUI Start up a command line window from the system Change current directory to where the system configuration file needs to be Start a FTP session as shown below Figure 22 Comman...

Страница 53: ...s menu This menu allows one to reset the radio using different groups of defaults to verify wireless link should the link be in question 4 8 3 Reboot System This command is used to reboot system witho...

Страница 54: ...44 IP920 Operating Manual Chapter 4 Configuration...

Страница 55: ...er can be calculated based on knowledge of the equipment being deployed The following four factors make up a system gain calculation 1 Transmitter power user selectable 0 20 to 30dBm 2 Transmitter gai...

Страница 56: ...mainly depends on the terrain profile and the height of the antennas off the ground The following table provides path loss numbers for varying antenna heights and antenna separation These numbers are...

Страница 57: ...IP920 equipment is powered down during installation At all times a distance of 23 cm must be maintained between the antenna and any person when the device is in operation Surge Arrestors The most effe...

Страница 58: ...he antenna connector surge arrestor The cable must be supported at the top with a hose clamp or wrap lock and at 5 ft intervals down the length of the tower Over tightening the fasteners will dent the...

Страница 59: ...tenna with appropriate gain See appendix A for a list of approved antennas that can be used with the IP920 radio modem If you require another type of antenna please contact Microhard Systems Inc The I...

Страница 60: ...50 IP920 Operating Manual Chapter 5 Installation...

Страница 61: ...y the DTE to inform the modem that it is alive and ready for communications SG Signal Ground Provides a ground reference for all signals transmitted by both DTE and DCE DSR Data Set Ready Output from...

Страница 62: ...52 IP920 Operating Manual Appendix A Serial Interface...

Страница 63: ...its Note again that the transmission line termination is needed if the system has high data rates and long wiring runs 4 wire RS 485 A IP920 RS 485 can also be connected into a RS 485 network in a fou...

Страница 64: ...54 IP920 Operating Manual Appendix B RS485 Wiring...

Страница 65: ...IP920 Operating Manual Appendix C Mounting Dimensions 55 C Mounting Dimensions 3 885 4 HOLES 0 375 I D 4 2500 0 1250 IP920 TOP VIEW FRONT 3 7500 4 760...

Страница 66: ...56 IP920 Operating Manual Appendix C Mounting Dimensions...

Страница 67: ...ge1 96 kilometers 60 miles Power Requirements 8 VDC to 30 VDC Power Consumption 600 mA max 300 mA typical 95 mA receive 12VDC 7mA in sleep mode Operating Frequency 902 928 MHz System Gain 136 dB Sensi...

Страница 68: ...58 IP920 Operating Manual Appendix D Technical Specifications...

Страница 69: ...MHz Yagi Directional Antenna Bluewave RPTNC Pigtail MHS031501 9dBd 900MHz Yagi Directional Antenna Antenex RPTNC Pigtail MHS031441 10dBd 900 MHz Yagi Directional Antenna Bluewave RPTNC Pigtail MHS0314...

Страница 70: ...60 IP920 Operating Manual Appendix E Approved Antennas...

Страница 71: ...tection scheme for transmitted data Performed by using a polynomial algorithm on data and appending a checksum to the end of the packet At the receiving end a similar algorithm is performed and checke...

Страница 72: ...ces use a compact 9 pin connector with only the essential signaling lines used in asynchronous serial communications Lines have two possible states high on active asserted carrying 3 to 25 V or low of...

Страница 73: ...rate of data trans mission passing through a data communication system often expressed as bits or characters per second bps or cps VSWR Voltage Standing Wave Ratio is a measure of impedance mismatch...

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