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TROUBLESHOOTING
8) Cable wired to 568B standard?
Is the cable wired
and terminated correctly and are those terminations
connected to the correct ports? Incorrect wiring and
termination will result in unstable operation or a blank
screen.
9) Electrical interference
– HDBaseT is less susceptible
to interference compared to regular transmissions but
the location of cables and devices should be considered
- could any form of interference be generated? If so,
attempt to remove the source of electrical interference
or move the cable run to decrease the effects of the
interference.
10) Is a picture achieved when connecting the
source directly to the display?
If not then the problem
could lie with the input or output device rather than the
means of distribution i.e. the cable, AMP or matrix itself.
11) HDMI lead condition and quality
– HDMI cables
and connectors are delicate and can be damaged much
easier than component or coax cable. Furthermore,
lead quality varies dramatically, particularly in lower price
brackets. Swap HDMI leads and check operation –
damage to or quality of your leads could be the problem.
If in doubt, swap them over. Always take care inserting
andextracting your HDMI from matrix ports so as not to
damage the connectors or ports.
12) Picture speckles/HD ‘noise
’ – represents a poorly
established signal that may be caused by poor quality
terminations, CCA, stranded or excessive cable lengths.
Try swapping the display adaptors from a location that is
functioning properly or swapping the outputs of the matrix
switch used.
If the problem remains on the same screen this may be
caused by a connection problem between matrix and
display – turn off all equipment and swap the signal
carrying cables at both ends to ascertain if the cable or
termination is at fault.
HD Noise (NO image)
may be an HDCP Issue between
the source and display but poor cabling can also cause
this due to poor communication.
13) Blu-ray: Deep Colour
– make sure Deep Colour is
turned on in your Blu-ray settings and displays.
14) Blu-ray: Resolution
– if a reduction of resolution
to 720/1080i produces an image, cable issues such
as interference, patch panels, wall outlets, stranded
cable use or excessive cable length are likely restricting
transmission of a full 1080p signal.
15) Blu-ray: 3D
– is the equipment used 3D enabled/
compatible? Is a 3D disc being played in a 3D enabled
Bluray player or through a compatible amplifier?
16) Colour distortion
– a pink or green screen indicates
an incompatibility between colour spacing formats – the
commonly used RGB or YUV used by older displays.
Some sources allow switching between RGB and YUV
which may solve any colour problems. If not, try changing
the HDMI cable between the source and the matrix to rule
out defective cabling.
Audio is transmitted within the video signal – there is no
separate audio track – so generally a problem with sound
will be accompanied by a problem with picture. However,
if technical issues with audio are experienced, the cause
is typically communication
between sources, displays and/or AV receiver settings.
No Sound or Poor Quality Audio
1) Have specific speaker sets or zones been
enabled?
Some AV receivers allow individual speaker
selections assigned to specific zones in the set up so
check the speakers used are fully connected to the
amplifier and correctly assigned within the system set up.
It may be an EDID issue in that the source reads the audio
EDID from the display and only request’s two channel
audio and EDID copy from the AVR may be required or
use an embedded EDID in the AMP or Matrix.
Note: If problems are experienced when an AV receiver is
used, the cause is usually the settings of the AVR itself.
Refer to the AVR manufacturer’s guidelines on the correct
settings to use for your requirements.
2) Consistency of audio output between devices
– Is
there any discrepancy between the audio output of the
source, the audio or zonal settings of the AV receiver and
the speaker configuration used needed for successful
audio replication? If outputting 7.1, make sure all devices
connected are also outputting 7.1
Note: Occasionally with some sources, the device settings
allow the specification of audio output through a TV or an
HDMI port. If using an AV receiver, check the HDMI output
option is selected.
3) Do all the local sources work through the AV
receiver?
Check the operation of each source individually.
Bandwidth
1)
If using a graphics-based source (such as a PC/Mac/
media server), make sure the source resolution is set to
