E BEAM
User Manual & Modem Installation Guide
©
whirlwind
Specifications subject to change without notice
11
modem is connected to a valid Ethernet source which is set to 100
Mbps Full-Duplex and not “Auto Negotiate”, and that the Ethernet Link
LED is on. Also, use an 850 nanometer (nm) fiber optic power meter
to verify that the received power is not greater than +2 dBm. Unplug
the “RX” fiber cable and plug it into a fiber optic power meter to
measure the dBm value. Refer to the Understanding Received Optical
Power section on page 14 for a table that defines what power levels to
expect at certain distances.
If the problem persists, proceed to the location in which the modem
does not have fiber link (Site 1 in this example). Take an infrared
viewer up to the roof (or pertinent antenna location) of Site 1 and verify
that there is a laser source coming from Site 2. Through the infrared
viewer, the laser should appear as a bright circle. If the beam is not in
the field of view of the antenna at Site 1, walk around the antenna at
Site 1 with the viewer to see if the alignment from Site 2 to Site 1 is off.
Call Whirlwind Technical Support (Toll: 888-733-4396) if the problems
cannot be remedied.