7
and configuring the matrix, we are confident
solutions can be found by working through the
following troubleshooting checklist before seeking
alternative technical support.
No Picture or Poor Quality Picture
1) Power
– is your Transmitter and Receiver powered with
correct LED indication?
The EXP-EX-HDBT-50 Transmitter and Receiver needs to
be locally powered - Please use power supply included.
2)
If possible, always use test equipment prior to
installation and to troubleshoot any problems.
3)
Check display device supports HDCP, is switched to
the correct source input mode and is compatible with the
receiver - if any issue is suspected, replace display device
with another model.
4) Distance
- Is the cable too long for the signal to be
transmitted effectively? The HDBaseT classification
used within EXP-EX-HDBT-50 allow transmission of 4K up
to 25m/82ft and 1080p up to 50m/164ftft.
Ensure the cable distance matches the project
requirements and is well within the maximum transmission
distance of the signal.
Note:
If approaching the limits of the transmission
capabilities, transmission should be extended by using
another extender set to ensure the signal reaches its
destination effectively.
5) Cable Joins
- Joins in the cable run or RJ45
connectors can impact on signal strength, resulting in
reduced transmission that may manifest itself in incorrect
picture quality, picture dropping out or a complete lack of
picture
6) Cable Choice and Signal Reduction
– Are stranded
patch leads being used as interconnects between patch
panels or wall outlets? CCA (Copper Clad aluminium)
cables being used? These can reduce transmission rates
by up to 40% – we recommend solid core straight through
with minimum connections used wherever possible.
7) Correct connection
– It may seem obvious but double
check all UTP, HDMI, power and IR cables are connected
to the correct ports.
Note:
Even a fraction off can be the difference between
a perfect picture and a blank screen. Double check all
connections are firmly made in the correct ports.
8)
Check LED indication on Receiver for confirmed
operation. Are LEDs on and/or behaving properly (static
or blinking - see Panel Description for details on LED
indication). If LEDs are not correctly lit, connections,
cable/terminations, interference , distance etc. should be
investigated. Swap cables out if necessary.
9) 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.
10) 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.
11) 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 display rather than cable,
transmission device or receiver itself.
12) 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
and extracting your HDMI from matrix ports so as not to
damage the connectors or ports.
13) Picture speckles/HD ‘noise
’ – represents a poorly
established signal that may be caused by poor quality or
excessive HDMI cable lengths. To rule out equipment fault,
if you have more than one extender set, try swapping
transmitters and receivers from a location functioning
properly. If the problem remains on the same screen this
may be caused by a connection problem between source,
transmitter, receiver or 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.
