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245U-E Wireless Ethernet Modem User Manual
Rev Version 2.24
Throughput
The second test is the throughput test, which when enabled performs a basic throughput test between the
access point and the client. The configurable remote device IP address should specify the IP address of the
access point.
NOTE The on-board Iperf server must be enabled at the access point prior to running this test.
The throughput test will run through a continuous cycle where data is transferred for 10 seconds, followed
by 10 seconds of silence. The RS485 LED and the DIO LED are used as indicators of the throughput test.
When data is being transferred, the DIO LED is red, and when no data is being transferred, the DIO LED is
off.
If the average throughput over the 10-second duration of the throughput test is greater than the
configurable Throughput High Threshold, the RS485 LED will be green. Otherwise, if the throughput is
greater than the configurable Throughput Low Threshold, the RS485 LED will be red. If the measured
throughput is less than the Throughput Low Threshold, the RS485 LED will be off.
The radio path test can be accesses by selecting the link from the System Tools page and then selecting
the “Enable Radio Path Test” option and entering the appropriate thresholds levels to indicate RSSI and
throughput and the IP address of the Iperf server (normally the access point).
Figure 93 shows the indications you will see using the configuration above.
• The OK LED will flash between red and green, which indicates that the module is in a diagnostic Radio
Test mode.
• RS-232 LED is green, indicating the RSSI to the access point is greater than -40 dB. If the RS232 LED
were red, it would indicate the RSSI level was greater than -60 dB.
• RS-485 LED is green, indicating the throughput to the access point is greater than 10 Mbps. If the LED
were red, it would mean the throughput is between 10 Mbps and 4 Mbps.
NOTE Advanced configuration settings such as Serial or I/O Transfer should be disabled, and if
using the throughput test, the Iperf server option on the Advanced Radio Settings page for the
access point must be enabled.
Figure 93
Throughput Test LEDs