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Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-E-G/A User Manual
that it has been enabled and the module has been reset. Each press of the "Measure Throughput" button will perform a
TCP throughput test of 10 second duration.
You will see the message "Performing Iperf Test" text and and if you look at the modules you will see the TX/Link & RX
Led's flashing very fast as it performs the test. Approximately 10 seconds later a graph showing the actual throughput
over the 10 second period and a calculated average will be displayed.
The graph below shows the data throughput range between 8 and 14.5Mbits per second with an overall average of
10.9Mbits per second.
It is recommended to perform this throughput test a number of times to get better sample of the overall throughput.
The expected throughput will depend on a number of things, the distance setting, selected channel width, and whether
using the internal Iperf utility or running Iperf externally on a laptop or PC (at both ends of the link).
The following table shows real world throughput estimates based on channel selection and receiver signal levels.
Throughput is calculated using the inbuilt "Iperf" utility and communicating TCP/IP over the three different bandwidth
channels (20M, 10M, & 5M). These estimates are not necessarily the maximum that are achievable in the modems but
are used more as a guideline to determine the performance of the radio link.
See APPENDIX D - for details on using the external Iperf throughput test.
The Iperf throughput result provides an excellent measure of the performance of a radio link. In general, if the results you
get are a lot worse than the best case values listed below, this is a certain indication that the radio link has either poor
RSSI, or high noise or interference, or both.
WI-MOD-E Radio Data Throughput
Distance
Iperf
1000m
Internal
1000m
External
3000m
Internal
3000m
External
5000m
Internal
External
5000m
10000m
Internal
10000m
External
Throughput and Repeaters
Rev. 2.16
Figure 79 - Iperf Throughput
20MHz
10MHz
10.5 Mbps
7.5 Mbps
16. Mbps
10.5 Mbps
10. Mbps
7. Mbps
15. Mbps
9. Mbps
9. Mbps
6. Mbps
13. Mbps
8. Mbps
7. Mbps
5. Mbps
10. Mbps
7. Mbps
www.weidmuller.com
5MHz
5. Mbps
6. Mbps
4.7 Mbps
6. Mbps
4.5 Mbps
6. Mbps
4. Mbps
5. Mbps
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