8. Troubleshooting
•
LED on powered unit does not shine
Please check the power supply voltage and Watts and please count with losses on the wires (long
wires or low quality Eth cable can consume significant power).
Each unit has to be powered by adequate power supply with voltage in the proper range (as stated
in datasheet or in
Chapter 9, Technical parameters
or on
on each unit housing). Power
supply has to be able to deliver enough power (Ampers and Watts) for the unit.
The voltage level is checked before system boot. If the voltage is below 21 V, the unit LED does not
shine at all and no boot is performed.
For units with minimum input voltage 37 V (like RAy3-18 or RAy3-80) may happen that unit shines
red for first 15 seconds after powering and then LED gets dark. It means input voltage is in the range
21-37 V. (Note: management interface indicates that as well.)
•
LED on powered unit shines other colors than just green
The unit operating the wireless link OK should shine just green. The only exception is during the unit
boot (when LED is red) and during establishing the wireless link with the unit on the other end (when
LED blinks green).
For a resolution of the system status and the reason of the different LED colors (including any kind
of red blinking) see
Section 1.5, “Status LED ( S )”
•
Polarization incorrect
Units RAy3-17 and RAy3-24 must be mounted with opposite polarization; one with TX horizontal
polarization (horizontal arrow) and the second with TX vertical polarization (vertical arrow). See
for more info.
Install the unit with the correct
horizontal
or
vertical
polarization: The arrow mark indicates the unit
TX polarization. When the arrows heading perpendicular to the earth, the unit transmits a signal in
vertical polarization. When the arrow is heading parallel to the earth, the unit transmits a signal in
horizontal polarization. The connectors must point downward at an angle.
•
The link cannot be established
Double check the correct polarization (see above) of both units on the link.
Double check the correct compatibility settings for both units on the link. For more info see
tion 5.6.1.4, “Radio adaptation”
and Troubleshooting topic
Setting up a link between RAy3-24S and
other hardware variant of RAy3-24
(see below in this chapter).
Start with the most “resilient” configuration. This configuration depends on the variant of unit. We
recommend using the maximum available output power, the narrowest available bandwidth (e.g. 3.5
or 5 MHz, respectively 250 MHz in the case of 80 GHz unit), the lowest modulation level (QPSK_S
respectively 2PSK_BW/4_S in the case of 80 GHz unit ensured by setting both parameters
and
to such value on both units).
TX and RX channels must be the same as the RX and TX channels in the remote unit. When the
connection has been established and the antennas have been directed, proceed with operation
parameters.
•
RSS and Antenna alignment
To configure the link and monitor its state, several menus display the RSS signal strength (most in-
teractive are pages
or
). Additionally RSS can be
monitored by a voltmeter connected to
or by RACOM smartphone application
on a mobile phone connected to
185
© RACOM s.r.o. – RAy3 Microwave Link
Troubleshooting
Summary of Contents for RAy3-11
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