DJM Electronics GigaFOILv4-INLINE User Manual - Page 3

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Troubleshooting

Guide

The FOIL Ethernet filters do not require any special treatment. Connect the filter to a computing device and a

network (or second computing device) and the filter will autonegotiate the connection between the two and

should work seamlessly and invisibly. However, occasionally there is a communication problem or

network/software hiccup that interferes with network connectivity. And less frequently, there is a hardware

failure.

In the event that your FOIL Ethernet filter fails to work or stops working, follow these instructions:

NOTE: FOIL Ethernet filters pass Ethernet packets ONLY. They will NOT pass other signals such as the tones

or pulses used by network cable testers or digital phone signals that are not based on Ethernet (TCP/IP). The

ONLY way to test a FOIL Ethernet filter is to connect the filter to a computing device and a network (or other

computing device) and verify connectivity.

Step 1. Verify the filter is plugged in and the power supply is functioning. The power supply should be able to

provide 5VDC and at least 1 amp to the filter. If necessary, use a multimeter to check that the power supply

output is 5VDC or slightly higher.

Step 2. Check the input connector and make sure the pins are not bent and are properly aligned so they will

come in contact with the cable connector pins.

Step 3. Do the same for the output connector and make sure the pins are not bent and are properly aligned so

they will come in contact with the cable connector pins.

Step 4. Reset the computing device, network device and the filter at the same time, allow ample time for

everything to come back up and check for network connectivity. The filter can be reset by unplugging the

power supply for 5 seconds and then plugging it back in.

Step 5. If there is still no connectivity, try "repairing" the network connection on the computing device or force

the computing device to release its IP address and renegotiate with the network for a new IP address.

Step 6. If you are connected to a managed switch (eg Cisco switch), it is possible that the switch is turning off

the network connection because it sees the FOIL Ethernet Filter as an unauthorized network (the filter acts like

its own switch to minimize traffic through the fiber connection). You will need to check with your IT department

to see if they use Bridge Protocol Data Unit (BPDU) Guard or similar security feature. Alternatively, you can

test the filter by disconnecting from the managed switch and using two computers or network devices through

the filter instead.

Step 7. Finally, verify that your computing device, cables and network are functioning properly by directly

connecting the computing device to the network. You MUST use the same computing device, cables and

network connection to positively remove these variables as possible causes of the problem. For the cables,

you should either use an RJ-45 coupler to connect the cables together, or test each cable separately.

Step 8. If there is still no connectivity, then the filter may be faulty. It will be necessary for you to contact us and

arrange for an RMA number.

All FOIL Ethernet filters have a two year warranty from date of first sale.

DJM Electronics, Inc

Visit Us Online At:

2907 Shelter Island Dr.

Suite 105-138

www.djmelectr onics.com

San Diego, CA 92106

866-DJM-ELEC