Troubleshooting, Visual inspection, Test cable connections – KBC Networks MPEG4 Decoder User Manual
Page 22: 4 troubleshooting, 1 visual inspection, 2 test cable connections, 3 video related problems

Decoder User Manual
Manual-MPEG4_DECA-Rev1206
Copyright © KBC Networks 2011
Page 22 of 29
www.kbcnetworks.com
3.2.8 Save Reboot
This link must be clicked after all setting changes have been applied.
3.2.9 Logout
When this link is clicked, the system will log out without a “save/reboot” process and
will return the user to the account and password login prompt.
4 Troubleshooting
4.1 Visual Inspection
The decoder contains LEDs which can be used as “at a glance” diagnostics. Further
details are listed under section 2.2.4.1 and 2.2.4.2
4.2 Test Cable Connections
4.2.1 Determine Link Activity
If the LAN port LEDs are not illuminated, verify the cable and/or Ethernet device
which is connects to the decoder. If the Ethernet device is not powered on or is
exhibiting some link activity problem the LAN port will not light up. As a precaution,
re-test all Ethernet cables with a cable tester.
4.2.2 Verify Type of Cable Needed
Generally a straight-through Ethernet cable is required for most unmanaged
switches and computer connections. On occasion a crossover cable is required. KBC
recommends each type of Ethernet cable be available. If the cable will be exposed to
the elements in order to connect to an outdoor wireless antenna, use only shielded
outdoor rated cabling. Always protect the cabling from sources of potential harmful
voltage surges.
4.3 Video Related Problems
If the decoder is not displaying a video output, the following steps can be followed to
check the encoder side of the link:
4.3.1 Check Camera Output
If there is a problem with the composite video output, the decoder will display the
same error message as if the link between the two devices was not established. The
encoder, however, will display a “Video Loss” message on a blue screen. The video
input can be checked by using the “Video Out” BNC connected to an analog monitor.
4.3.2 Ensure Video Connection Prior to Applying Power to the Encoder
Always connect the video input to the encoder prior to applying power to the
encoder. If the encoder is powered up before the video connection is made, the
encoder will need to be power cycled.
4.3.3 Verify Video display within the Encoder GUI
The encoder shows the video from the camera on its video display. After accessing
the user interface (GUI), the video display is the first property shown after login. If