Cooper Bussmann BU-945U-E 802.11 DSSS Radio Throughput, Data Throughput Based on Repeater Hops

Page 19

Cooper Bussmann Wireless Ethernet & Device Server BU-945U-E 802.11 DSSS User Manual

Radio Throughput

Below is a table showing the maximum TCP/IP throughput based on channel selection and receiver signal level.

There are five channel bandwidths (20, 10, 5, 2.5, & 1.25MHz). These throughput estimations are based on perfect radio conditions, i.e., little to no outside radio interference present while data is being passed

BU-945U-E Radio Data Throughput

 

 

 

 

 

 

 

 

Data Rate in Mbps

 

 

900Mhz Signal Strength

20MHz

10MHz

5MHz

2.5MHz

1.25MHz

-72dBm

22.0

11.0

5.5

2.8

1.4

-75dBm

20.0

10.0

5.0

2.5

1.3

-81dBm

17.0

8.5

4.3

2.1

1.1

-84dBm

11.0

5.5

2.8

1.4

0.7

-88dBm

9.0

4.5

2.3

1.1

0.6

-91dBm

6.0

3.0

1.5

0.75

0.38

-90dBm

5.5

2.8

1.4

0.69

0.34

-91dBm

4.5

2.3

1.1

0.56

0.28

-92dBm

3.0

1.5

0.75

0.38

0.19

-91dBm

2.0

1.0

0.5

0.25

0.13

-93dBm

1.0

0.50

0.25

0.13

0.06

-95dBm

0.5

0.25

0.13

0.06

0.03

Throughput and Repeaters

It should also be noted that if using repeaters to extend the range there will be a reduction in throughput for each repeater hop. The following table shows the drop in throughput for each hop and for each of the channel widths.

Data Throughput Based on Repeater Hops

Signal/Channel

 

20 MHz

 

 

10

MHz

 

 

5MHz

 

 

2.5MHz

 

 

1.25MHz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Hops

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

1

2

3

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-72

22

11

5.5

2.8

11.

5.5

2.8

1.4

5.5

2.8

1.4

.7

2.8

1.4

.69

.34

1.4

.69

.34

.177

-75

20

10

5.

2.5

10.

5.

2.5

1.3

5.

2.5

1.3

.6

2.5

1.3

.63

.31

1.3

.63

.31

.166

-81

17

8.5

4.3

2.1

8.5

4.3

2.1

1.1

4.3

2.1

1.1

.5

2.1

1.1

.53

.27

1.1

.53

.27

.135

-84

11

5.5

2.8

1.4

5.5

2.8

1.4

.7

2.8

1.4

.69

.34

1.4

.69

.34

.17

.69

.34

.17

.094

-88

9

4.5

2.3

1.1

4.5

2.3

1.1

.6

2.3

1.1

.56

.28

1.1

.56

.28

.14

.56

.28

.14

.078

-91

6

3

1.5

.75

3.

1.5

.75

.38

1.5

.75

.38

.19

.75

.38

.19

.09

.38

.19

.09

.059

-91

4.5

2.25

1.1

.56

2.3

1.1

.56

.28

1.1

.56

.28

.14

.56

.28

.14

.07

.28

.14

.07

.044

-92

3

1.5

.8

.38

1.5

.75

.38

.19

.8

.38

.19

.03

.38

.19

.09

.05

.19

.09

.05

.029

-93

1.

.5

.25

.13

0.5

.25

.13

.06

.3

.13

.06

.03

.13

.06

.03

.02

.06

.03

.02

.013

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3A1582Rev1.6

www.cooperbussmann.com/BussmannWirelessResources

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Contents Read Retain FCC Notice Cooper Bussmann Application EngineeringPhone 800 a.m 500 p.m. Central, M-F 636 Fax 636 GNU Free Documentation License Important NoticeCooper Bussmann Contents Access Point vs Client BU-945U-E 802.11 630mW max powerNetwork Topology 3A1582Rev1.6 Bridge vs. Router Getting Started Quickly General Antenna InstallationAntennas Bench test and Demo System SetupPlant and Factory Installations Line-of-sight installationsOmni-directional Antennas Installation tipsRS232 Serial Port Power SupplySerial Connections Directional AntennasRS485 Serial Port DB9 Connector Pinouts3A1582Rev1.6 Discrete Digital Input/Output Start-up LED Indication Selecting a Channel802.11 900 MHz Channels 3A1582Rev1.6 Data Throughput Based on Repeater Hops Radio ThroughputDefault Configuration Configuring the Unit for the First TimeAccessing Configuration for the First Time For local addresses Power up the BU-945U-E moduleEnter the username user and default password user Method 1 Set PC to same network as BU-945U-E3A1582Rev1.6 Quick Start Quick Start ConfigurationNetwork Configuration Save Changes and Reset Dhcp Server Configuration, Default is uncheckedWireless ports will have the same IP address Configured Essid of the clientEncryption keys must not be all zeros, i.e Security Menu3A1582Rev1.6 Router Operation Radio ConfigurationNormal Operation Transparent Bridge OperationAccess point Bands Default is AutoSignal quality, etc Drop back to non-bursting modeChannel Selection Dhcp Client ConfigurationRadio Mode BU-945U-E Only Supports the 802.11 Standard Default distance is 20kmDNS Server Configuration Dhcp Server ConfigurationSpanning Tree Algorithm / Redundancy Multiple AP Repeater Mesh Network 3A1582Rev1.6 Site B WDS Configuration Example Extending range using WDSExample Adding Redundancy Example Roaming with WDS Access Points3A1582Rev1.6 Example WDS Routed Network Mouse, to highlight the entire row WDS Connections Routing RulesSTP Specifies a destination host Wireless Message FilteringInformation at a later time 3A1582Rev1.6 IP Address Filter Configuration MAC Address Filter ConfigurationUtilize the radio link. All other devices are blocked ARP Filter Configuration RS-232 PPP Server Serial Port ConfigurationSerial Gateway Modbus Modbus RTU to TCP Serial Gateway Server/Client/MulticastSerial Menu Modbus TCP to RTU GatewayMulticast Pipe Manager To be the same on all communicating Multicast devices Digital Input/OutputPort on the Client, i.e., Scada, DCS, etc Multicast Group IP AddressModbus I/O Transfer 3A1582Rev1.6 Modbus TCP Configuration on I/O Transfer Menu Modbus TCP Client Mappings on I/O Transfer Menu Module Information ConfigurationModule Information Webpage Fields System Tools Remote ConfigurationSetting a BU-945U-E to Factory Default Settings Configuration ExamplesExtending a Wired Network Client 2 Configuration Client 1 ConfigurationLAN B Configuration Client Configuration Access Point ConfigurationExtending Range of a Network with a Repeater Hop RED Continuously Diagnostics ChartBoot Status LED Indication during Start-up LED Indicator Condition MeaningSite Survey Diagnostic Information AvailableConnectivity Connectivity ParametersNetwork Traffic Analysis Statistics5014 STA Only Internal Diagnostic Modbus Registers9999 Both Reset module enter Ffff to reset module Connection InformationStatistic Registers Utilities Testing Radio PathsPing 3A1582Rev1.6 Arp IpconfigRoute Serial Ports Power SupplyGeneral Radio TransceiverInput / Output status System ParametersAppendix a Firmware Upgrades Web-Based UpgradeDhcp ACKCSMA/CA CSMA/CDIPX-SPX IeeeISN SSL SNRNAT NICWEP VoIPVPN WANDBm to mW Conversion Materials InstallationIperf Applications 3A1582Rev1.6 JPerf Application 3A1582Rev1.6 Terms and Conditions Preamble3A1582Rev1.6 No Warranty 3A1582Rev1.6 Customer Assistance
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