MST Impact NS5001, Руководство пользователя

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Appendix
A
Troubleshooting Guide
This chapter assists in the diagnosis and resolution of problems with NS50 installation and operation.
Solution Possible Causes Problem
An additional DC power supply is required to boost the
power of the network switch. It is highly recommended Insufficient power supplied to the
NS50. The power light
on the NS50
blinks on and off,
and is dimly lit.
that a site survey is conducted to determine power
requirements during system design or modifications.
Measure voltage to the NS50. If the voltage measures less
than 15VDC, a JB11 junction box is required. Insufficient power supplied to the
NS50 to power PoE devices. PoE devices are
not operational.
Enable the PoE feature in the web browser interface. The PoE rail is not enabled.
The NS50 has no power. LEDs on the
wireless network
switch are not on.
• Check that power is connected from either the
composite cable or the test / configuration jig to the
NS50.
• Verify the network switch is connected to an
operational power supply.
• Test the power supply is supplying the correct
voltage/current for the NS50.
• Check there is sufficient power available if extending
the NS50 infrastructure.
Verify the fibre link is connected and active. The NS50 fibre connector is not
connected. The fibre activity
light is not on.
There is a network access issue. The wireless
network cannot be
• Check that the NS50 is properly installed, LAN
connections are connected properly and the unit is
configured from
powered on. If the PC uses a fixed (static) IP address,
the web browser
interface.
check that it is using an IP address within the IP range
of the network switch.
• Check that the VLAN settings on the devices upstream
on the network are not restricting access.
Incorrect earthing scheme. Power supply
instability.
• Check antennas are insulated from ground.
• Check PCB in the network switch has a floating earth
(not grounded).
There are too many network devices
on the one power supply.
• Add additional power supplies.
• Isolate network segments so that in event of power
supply failure, an overload condition is avoided.
Check MAC addresses configured on the NS50 using the
web browser interface. Incorrect MAC address. WDS link fails to
establish.
NS50 User Guide 93 Revision C