Date Code 20181001 SEL-3031 Instruction Manual
Installation
Overview
2.11
Step 3. Interrogate Radio A1 and issue the RAD command to retrieve the
RSSI (Receive Signal Strength Indication) value.
NOTE: Always do Step 2 on the link that is either the
longest distance or has the worst RSSI value for the
system.
Step 4. Turn off the power on Radio B. Turn on the power to ONLY Radio
A1 and A2.
Step 5. Set the settings in Radio A2 to link with Radio A1. Interrogate Radio
A1 and retrieve the RSSI. The difference between the RSSI value in
Step 3 and Step 5 needs to be equal to or less than 24 dBm.
If the difference is greater than 24 dBm then move the antenna on A2 and repeat
Step 5. If the antenna separation needed to achieve 24 dBm exceeds what is practical
for installation, then try one or all of the items below to improve the adjacent
interference.
You can achieve a higher availability with collocated antennas when unsynchronized
by:
1. Reduce the transmit power on the collocated radio if the adjacent link
has a much higher signal strength with adequate fade margin.
2. Change your SKIP settings on one radio so the radio pairs hop at a
farther distance apart on the ISM band (see Radio Settings on
page 4.12).
3. With two located antennas, polarize one radio opposite of the other.
NOTE: If you have two collocated links aimed to exactly
same location then you should polarize both vertically.
4. Change out the collocated antennas with higher gain antennas with a
narrower beam and lower side angle profile.
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