QuantAsylum QA401, Руководство пользователя

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QuantAsylum QA401 User ’s Manual
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57
Step #1: Make sure you are connected to a high-speed (480Mbps) USB hub
The analyzer requires the additional bandwidth provided by high speed to meet its performance
requirements. If you are seeing messages such as shown below, and you are sure you are connected to a
480Mbps hub, then it’s possible that another device on the hub is slowin g the hub down OR a hub as
become stuck at a slower rate. Remove all other devices from the hub and reboot the computer.
Step #2: Make sure no QuantAsylum applications are running, and then plug in the analyzer and
confirm the driver is loading properly.
When you plug in the analyzer, you should hear an audio indication that the analyzer has been plugged
in. If you do not, plug in another USB device that is known to work and see if that device gives an audio
indication. If it does not, your audio settings might be too low or muted.
With your selected hub able to support high-speed (480Mbps) USB, then next step is to plug in the
QA401 device while the application is not running. After plugging in the QA401, check the Device
Manager (type devmgmt.msc at the Start -> Run Menu or Start text prompt) and then expand the
Universal Serial Bus Controllers section.
This should show a reference to the QA401 Analyzer as highlighted below (although the “development”
text might not be present. That is fine).