OPERATIONS MANUAL Wireless Ethernet Systems
TROUBLE SHOOTING 
PROBLEM SUGGESTION 
No Link Activity 
1.  No power from connected device–make sure the connected 
Ethernet/IP device is powered. 
2.  Check all cables and connectors. If the tester shows that all 
wires are making contact, check the entire length of cable 
for kinks, cuts, tears or any other cable hindrances. 
3.  Make sure the cable run between the WEM and Ethernet 
device is no longer than 300 feet. 
4.  Make sure the cables being used are straight through (568-B 
or A configured (see page 7)) and all cable connectors are 
attached properly. 
5.  If using an Ethernet hub or fast switch, try a crossover cable 
between the switch and the Power Injector Module. 
No Signal Level LED or 
Flashing Signal Level 
LED 
1.  Check line-of-sight of the WEMs. Verify the WEMs are 
aimed properly. You should have clear, wide-open line of 
sight between the WEM modules. 
2.  Change channels; cycle power. 
3.  Verify sufficient voltage into each PIM. 
Note: The Host AP WEM green signal level LED will flash indicating 
the number of Client SU WEMs it is communicating with. This is 
normal for this device and should not be confused as lack of signal 
strength. The green LED on the Client SU WEM should be solid if 
the Client SU in order to communicate with the Host AP at a full 
signal strength. 
All three solid LEDs but 
no picture or picture 
drops out after a period 
of time 
1.  Check video at the camera 
2.  Check wiring into encoders or decoders 
3.  Try changing channels; cycle power. An uninterruptible 
power supply (UPS) may be required and is suggested. 
4.  Connect one WEM directly into a PC or laptop and verify 
that the IP address is accessible. Check the other WEM(s) 
the same way, then verify that each IP address is accessible 
over the wireless link into a PC/laptop. 
5.  Verify the connected Ethernet/IP device is configured 
correctly. If in use, encoders and decoders must be paired 
up correctly. 
No Green Signal Level 
LED (When using the 
ML WES-30 or ML 
WES-12) 
1.  Verify wide-open line-of-sight 
2.  Re-angle your dish antenna in a downward angle until both 
LEDs are solid green. 
3.  Mount the dish(es) higher above ground level and/or above 
any obstruction. 
If you have tried the trouble shooting steps above and the system is still not working correctly, please 
contact MicroTek at 888-366-4276, Monday through Friday, between the hours of 8:00AM and 
5:00PM Pacific Time. One of our technicians will work with you to rectify the problem over the 
phone. 
Thank you, 
MicroTek Electronics, Inc. 
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