Testing the Sonar Head telemetry
You can run a telemetry test to make sure the link between the Sonar Head and the M3 software is working correctly.
Prerequisites
•  For this test you will need the Sonar Head connected to the Sonar Processor and powered on.
•  The M3 software must be running.
•  This procedure is made for the Microsoft® 64-bit Windows 10 operating system. It is assumed that you are familiar with the Windows® operating systems, computer technology, and interface principles.
Context
This procedure explains how to measure the available bandwidth on a 100Base-TX (100 Mbps) Ethernet link. The same procedure can be used for 10BaseT and 1000BaseT links by selecting the appropriate sonar application and adjusting the Ethernet adapter settings to the corresponding link speed.
Note
There are no standard sonar applications with a telemetry-link speed requirement higher than 100 Mbps.
The ping rate is normally taken from the sonar application or range setting. If the estimated available bandwidth is less than the bandwidth required by the sonar application/range, the M3 software reduces the ping rate to compensate.
Note
The update rate is the number of times the sonar view is updated per second. The displayed ping rate may be different from the update rate because the system might be impacted by other processes.
The Override Network Link Speed function allows you to use the telemetry bandwidth value (in Mbps) entered into the box instead of the default speed. If the applied override telemetry bandwidth is less than the telemetry bandwidth required by the sonar application/range, the ping rate is reduced.
Procedure
1 Click SetupConnect to start the Sonar Head.
2 Add the Ethernet Test application to your list of favourite applications.
a Open the Sonar Apps menu on the top bar, then select Customize Apps.
b Double click on Ethernet Test - 100Mbps shown under Other Apps.
c Click OK.
3 Open the Sonar Apps menu on the top bar, then select Ethernet Test - 100Mbps.
4 Click SetupConnect to start the Sonar Head.
5 Open the Task Manager and find your Local Area Connection.
a Press the <CTRL> + <ALT> + <DEL> keys.
b Click Task Manager.
c Click on the Performance tab.
d Click on the Ethernet connection for the Sonar Head.
6 Make sure the activity on your local network is as expected.
a Allow the system to run for a few minutes to plot the Throughput graph.
b Observe the graph to determine the average network link speed.
Image
An average link speed of at least 80 Mbps is required by most sonar applications (some applications and range scales will use less). A link speed of less than 80 Mbps may result in a slower than expected ping rate.
c Right-click in the Throughput graph and select View network details.
Observe that the Network Details window opens.
d Confirm that the Network utilization is at least 80%.
Note
If the Network utilization is less than 80%, disconnect the sonar, close all other programs, then reconnect the sonar. In general, make sure that your network environment supports the required link speed.
e In the M3 software, look for any messages in the Output Messages window.
Make sure there are no lost packets.
Tip
The contents of the Output Messages window are also saved to a file in the folder C:\KML\M3_V0253\LOGS.
f If you see missing pings, try reduce the value in the Override Network Link Speed box to improve the performance.