The length of the lines on the echogram is indicative of the noise source's duration - you can work this out by the number of samples that each line covers on the echogram, multiplied by the duration of a single sample. Noise in the 70-206 kHz range suggests it is either a relatively broad bandwidth acoustic noise source, or transducer cables are passing close to an electrical noise source. Another common culprit is inverter noise being picked up via your cabling (i.e. A common culprit is the firing pulse from another sounder (often one of the vessel's navigational sounders) being picked up via your transducer (i.e. If you see spikes of noise in your echograms, the source will be either acoustical or electrical. If your dongle isn’t working after trying the above instructions, please contact Echoview Support and tell us the name of your license (which is on the tag attached to the dongle, and will be something like EV1234, ABCD-1, or TD-0000) and the exact version that you have installed, which you can find in Help > About Echoview, and will be in the format n.n.nn.nnnnn dongle version nnnnn (we need to know all digits). If you are using Echoview via Remote Desktop, please see the separate FAQ entry on this question. This is often necessary even if you’ve only recently downloaded Echoview from our website, as the version on the website does not necessarily know about the latest dongle changes. To do this, go to Help > Check for Updates when running Echoview, and install any updates that are available. If you’ve recently purchased, extended or upgraded your license, then you may need to update your copy of Echoview. If a light isn’t visible, try a different USB port or computer.Įchoview dongles are enabled in specific versions. Check that the dongle is plugged in and glowing: a light indicates that the computer can “see” the dongle.

Usb dongle remote desktop