User manual

102 www.cooperbussmann.com/wirelessresources
Cooper Bussmann 945U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 2.14
3. On the client PC, open up a command prompt and change the directory to jperf-2.0.2\bin as you did for the
server. This time enter the iperf command to start the client communication to the server:
“iperf –c <IP address of Server PC> -w 65535”
See Figure 96.
Figure 96 iperf –c Command
This will run a test over the Wi-Fi Link to the server PC and report back results as seen in Figure 97. These
results show the bandwidth (throughput) of the test as 16.2 Mbits/sec.
Figure 97 Bandwidth
4. Using the theoretical throughput calculations shown in the following table, you can compare the results with
the measured to give an indication of the difference between expected and measured. Keep in mind that the
theoretical calculations are best-case possible results.
240U-E 245U-E-G 245U-E-A 945U-E (20Mhz) 905U-E 805U-E
54 Mbps 27 Mbps 27 Mbps 27 Mbps
11 Mbps 5 Mbps 5 Mbps 5 Mbps 5 Mbps
1 Mbps 500 Kbp 500 Kbps 500 Kbps 500 Kbps
200 Kbps 80 Kbps
100 Kbps 40 Kbps
78 Kbps 37 Kbps
19.2 Kbps 7.8 Kbps 6.9 Kbps
In the command line for the client mapping you established the server IP address followed by the –w 65535,
-w is the window size and the maximum TCPIP window size is 65535 bytes.
Another entry that can be added is –t <seconds> to run the test for a specific time period.