netsys NV-720D, Руководство пользователя

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NV-720D ADSL2+/VDSL2 dual band Wi-Fi USER’S MANUAL Ver. B.2
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two antennas is the Gain pattern shape (the 5dBi Gain pattern shape is butterfly and the 2dBi Gain
pattern shape is chubbier), and also the 5dBi antenna has higher penetrating power (ex. Through
walls).
So regarding this issue, we don’t think that the 5dBi is providing less coverage, we think is because of
the Gain pattern shape. Furthermore, the actual performance will vary depending on the environment
factors.
System Diagnostics
Power and Cooling
If the POWER indicator does not turn on when the power cord is plugged in, you may have a problem with the power
outlet, power cord, or internal power supply as explained in the previous section. However, if the unit power is off after
running for a while, check for loose power connections, power losses or surges at the power outlet. If you still cannot
isolate the problem, then the internal power supply may be defective. In this case, please contact your local dealer.
Installation
Verify that all system components have been properly installed. If one or more components appear to be
malfunctioning (e.g. the power cord or network cabling), test them in an alternate environment where you are sure that
all the other components are functioning properly.
Transmission Mode
The transmission mode for RJ45 ports is Giga Ethernet, for RJ-11 port is auto-negotiation VDSL2. Therefore, if the Link
signal is disrupted (e.g. by unplugging the network cable and plugging it back in again, or by resetting the power), the
port will try to reestablish communications with the attached device via auto-negotiation. If auto-negotiation fails, then