Frequently Asked Questions - Marmitek Connect 421 UHD Guide Utilisateur

Audio settings
Select the desired audio settings by using either the remote control or the front buttons
of the Connect 421 UHD™.
Audio Return Channel
If your AV amplifier is connected via the "Audio out", there may be a slight lag between
your TV's image and the sound coming from the AV amplifier. This is caused by image
processing on your TV and is sometimes referred to as lip sync problem. The Connect
421 UHD™ supports ARC (Audio Return Channel). This involves the sound first being
sent to the TV, and then returned by your TV at exactly the right moment, using the
same HDMI cable. This allows you, without the use of additional wiring or settings, to
synchronise images and sound. The "ARC" switch allows you to enable or disable this
feature.
ARC must be supported by your TV to be able to use this feature. If your TV does not
support ARC, you can either turn off image processing on your TV, or delay the audio
coming from your AV amplifier or HDMI source. Please refer to your device's manual
for the correct settings.
Audio formats
Select the AUTO feature in standard situations; should you experience any problems,
please manually select a different audio format.
x
AUTO, the HDMI equipment automatically detects the best audio format that is
supported by your equipment.
x
7.1CH, supports Dolby TrueHD and DTS-HD Master Audio
x
5.1CH, supports DTS and Dolby Digital audio
x
2.0 CH, supports 2-channel audio

6. FREQUENTLY ASKED QUESTIONS

No (or poor) image and sound
If you experience poor or no picture after connecting the HDMI switcher, please try to
identify the problem by connecting the devices to your screen (TV, monitor or projector)
one by one. This allows you to determine whether the problem is with the HDMI
sources, the HDMI cables, the HDMI switcher or the screen.
x
Make sure the power adapter is connected and plugged in.
x
For the best picture and sound quality, only use High Speed HDMI® certified
cables.
x
Do not use HDMI cables longer than those specified in the technical data.
x
Check the HDMI cables and/or connectors for damage.
x
Both the HDMI source and your screen should fully support HDMI.
x
Check that your HDMI sources and screen support HDCP (High Bandwidth Digital
Content Protection) copy protection.
6
© MARMITEK