6
Troubleshooting
2
Press the reset button on the hub to reset the signal being sent to
the connected displays.
3
Is the included external power supply connected and plugged into a
working power source? For the product to function properly, it must
be connected to and receiving power from the external power supply.
4
Was the power to the DisplayPort source turned off prior to
installation? If not, restart your computer.
5
What resolution are you trying to reach? The B156-002-HDMI will
allow for video resolutions up to 3840 x 2160 (4K) to be displayed
on each monitor, whereas the B156-004-HD only supports video
resolutions up to 1920 x 1080 (1080p) on each port. When using
the B156-004-HD to display all four monitors in video wall mode,
expanded video resolutions are supported, such as 3840 x 2160
in a 2X2 monitor configuration, or 7680 x 1080 in a 4X1 monitor
configuration. Maximum supported video resolutions and number of
monitors will be dependent upon your graphics card, so check its
specifications to determine its capabilities. If you are not able to get
an acceptable image, try lowering your computer’s video resolution or
adjusting the refresh rate.
6
What length of cables are you using? The maximum cable lengths that
can be used between the source and the hub, and between the hub
and the monitors, is called out in the Installation Instructions section of
this manual.
7
What type of cabling are you using? Inferior cabling can result in poor
performance, so it is important that you use cables that can support
the video resolution you are trying to obtain. It is recommended that
you use the Tripp Lite cables shown in the Optional Accessories listing
in this manual, as they have been tested to work with the B156-
Series Hubs.
8
Test your cables to ensure they are working properly. For example,
connect your DisplayPort cables between a source and monitor that
you know works to see if the cable is functioning.
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