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10    S&C Instruction Sheet 1074-510

Operation

To route traffic between subnets, several things must 

happen. First, all hosts on a given subnet must use the 
attached SpeedNet ME radio as their default gateway. 
As an alternative, manual routes can be entered in each 
host’s routing table. Hosts from Subnet 1 will list 192.168.1.1 
as their default gateway. If AODV is disabled and static 
routing is used, it is necessary to add static routes in 
each SpeedNet ME radio. The SpeedNet ME radio from  
Subnet 1 must have a static route to Subnet 2, using the 
SpeedNet ME radio from Subnet 2 as the gateway. The 
route should be set up like this:

192.168.2.0

255.255.255.0

192.168.3.2

Network

Netmask

Gateway

All hosts from Subnet 2 should use 192.168.2.1 as their 

default gateway. As an alternative, manual routes can be 
entered in each host’s routing table. The SpeedNet ME 
radio from Subnet 2 must have a static route to Subnet 1, 
using the SpeedNet ME radio from Subnet 1 as the gateway. 
This route should be set up like this:

192.168.1.0

255.255.255.0

192.168.3.1

Network

Netmask

Gateway

NOTICE

It is important to understand there are actually three 
subnets in this example: Subnet 1, Subnet 2, and the 
radio network.
It is also important that all radio wireless IP 
addresses should be on the same subnet, while all 
radio Ethernet IP addresses should be on different, 
non-overlapping subnets. Otherwise, the radios will 
not be able to communicate with each other.

FCC Warning

This device must be professionally installed. It is the 
responsibility of the installer to ensure that proper antenna 
and cable combinations are used in order to remain within 
FCC Part 15 limits.

The SpeedNet ME radio is specifically designed to close 

the longest possible links. This goal is accomplished in part 
by delivering the highest permissible RF output power to 
the antenna per the FCC Part 15 Rules. In August 1996, 
the FCC adopted RF exposure guidelines that established 
safety levels for various categories of wireless transceiv-
ers. Those limits are consistent with safety standards 
previously published by the National Council on Radiation 
Protection (NCRP) Report 86, §17.4.1, §17.4.1.1, §17.4.2, 
and §17.4.3 as well as the American National Standards 
Institute (ANSI) in §4.1 of “IEEE Standard for Safety Levels 
with Respect to Human Exposure to Radio Frequency 
Electromagnetic Fields, 3 kHz to 30 GHz,” ANSI/IEEE 
C95.1-1992.

The SpeedNet ME radio complies with these FCC 

exposure guidelines when the following precautions are 
obeyed:
•  One of the exact antennas recommended in this instruc-

tion sheet is installed.

•  The cable run for the selected antenna exceeds the 

minimum length quoted in this instruction sheet.

•  All persons maintain a minimum separation of 12 inches 

(30.48 cm) from the SpeedNet ME radio antenna
Disconnect the ac/dc input power source from the  

SpeedNet ME radio whenever repositioning the antenna. 
You are responsible for taking the necessary steps to 
ensure these guidelines are communicated to all persons 
that may come near the SpeedNet ME radio antenna.

Summary of Contents for SpeedNet ME

Page 1: ...ing 4 Network Design 4 Operation IP Basics 5 Subnet Masking 6 Private Subnets 6 MAC Address 6 Network Example 7 Routing Options 9 Using Static Routes 9 FCC Warning 10 Antenna Requirements 11 Antenna Cable Requirements 11 Interface Pinouts 13 Cable Installation 13 Appendix Regulatory and Compliance Statements 14 Table of Contents Installation and Operation NOTICE SpeedNet ME radio instruction sheet...

Page 2: ...ials included in the product s instruction handbook before installing or operating the SpeedNet ME Mesh End Point Radio Familiarize yourself with the Safety Information on page 3 The latest version of this publication is available online in PDF format at sandc com en support product literature Retain this Instruction Sheet This instruction sheet should be available for reference wherever a SpeedNe...

Page 3: ...recautions are not followed NOTICE NOTICE identifies important procedures or requirements that can result in product or property damage if instructions are not followed Following Safety Instructions If you do not understand any portion of this instruction sheet and need assistance contact your nearest S C Sales Office or S C Authorized Distributor Their telephone numbers are listed on S C s websit...

Page 4: ...sign SpeedNet ME radios serve as a communication end point for SCADA devices They can connect to a SpeedNet ME radio mesh network They can be installed in a variety of network configurations Plan your network in advance and develop a logical IP addressing scheme for your particular application Depending on your network type several factors may influence your design Point to point vs end point with...

Page 5: ...1110 or 224 to 239 deci mal Class E addresses begin with 1111 or 240 to 254 deci mal Addresses beginning with 01111111 or 127 decimal are reserved for loop back and internal testing on a local machine This can be tested by pinging 127 0 0 1 which points to the local machine Class D addresses are reserved for multicasting and Class E addresses are reserved for future use and should not be used for ...

Page 6: ...raditional unswitched Ethernet network all nodes on a segment see all the packets transmitted by all the other nodes on that segment Performance can be adversely affected under heavy traffic loads because of collisions and the resulting retransmis sions A router is used to connect IP networks to minimize the amount of traffic each segment must receive MAC Address In networking the Media Access Con...

Page 7: ...network uses several private IP subnets from the 192 168 0 0 block of private addresses The SpeedNet ME radio network depicted in Figure 1 contains three Ethernet segments The first segment uses the 192 168 200 0 Class C subnet encompassing a range of addresses from 192 168 200 1 to 192 168 200 254 The second segment uses the 192 168 201 0 Class C subnet encompassing a range of addresses from 192 ...

Page 8: ...erface 192 168 1 1 IP Address 192 168 1 2 Default Gateway 192 168 1 1 SpeedNet 2 Wireless Interface 192 168 4 2 Ethernet Interface 192 168 2 1 IP Address 192 168 2 2 Default Gateway 192 168 2 1 IP Address 192 168 3 2 Default Gateway 192 168 3 1 IP Address 192 168 3 3 Default Gateway 192 168 3 1 SpeedNet 3 Wireless Interface 192 168 4 3 Ethernet Interface 192 168 3 1 ...

Page 9: ... ME radios provide a point to point wireless connection between two or more separate Ethernet subnets Data are then routed between the Ethernet subnets Route information can be entered manually or it can be pro cessed automatically by Ad hoc On demand Distance Vector AODV See Figure 2 on page 8 for an example of a wireless network using SpeedNet ME radios with AODV AODV routing is a routing protoc...

Page 10: ... communicate with each other FCC Warning This device must be professionally installed It is the responsibility of the installer to ensure that proper antenna and cable combinations are used in order to remain within FCC Part 15 limits The SpeedNet ME radio is specifically designed to close the longest possible links This goal is accomplished in part by delivering the highest permissible RF output ...

Page 11: ...ll output power 1 watt 30 dBm with a 6 dBi antenna The antenna cable must have sufficient loss to bring the EIRP below 36 dBm if a higher gain antenna is used For example using a 8 dBi antenna with a radio transmitting at full power would result in an EIRP of 38 dBm In this situation the antenna cable must provide at least 2 dB loss to bring the EIRP into compliance SpeedNet ME radios have configu...

Page 12: ...ttenuation Chart Nominal Attenuation Frequency in MHz dB 100 feet Cable Type 10 MHz 30 MHz 50 MHz 150 MHz 220 MHz 450 MHz 900 MHz 1 2 GHz 2 4 GHz 100 Series 2 3 3 9 5 1 8 9 10 9 15 8 22 8 26 7 38 9 195 Series 1 1 2 0 2 5 4 4 5 4 7 8 11 1 12 9 18 6 240 Series 0 8 1 3 1 7 3 0 3 7 5 3 7 6 8 8 12 7 400 Series 0 4 0 7 0 9 1 5 1 9 2 7 3 9 4 5 6 6 600 Series 0 2 0 4 0 5 1 0 1 2 1 7 2 5 2 9 4 3 LMR 400 UF...

Page 13: ...mplete the following steps when connecting cables STEP 1 Connect the antenna to the SpeedNet ME radio STEP 2 Connect the Ethernet cable to the SpeedNet ME radio and PC used for configuration STEP 3 Connect the power supply to the SpeedNet ME radio 6 7 8 9 1 2 3 4 5 Pin Function Description 1 NC No connection 2 TXD RS 232 transmit 3 RXD RS 232 receive 4 NC No connection 5 GND Signal ground 6 NC No ...

Page 14: ... to correct the interference at his own expense Canada ISED Innovation Science Economic Development Canada This device complies with Industry Canada license exempt RSS standard s Operation is subject to the following two conditions 1 this device may not cause interference and 2 this device must accept any interference including inter ference that may cause undesired operation of the device Cet app...

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