CMX88AB
USER MANUAL
08
www.blustream.co.uk
The CMX88AB features an automatic video resolution down-conversion tool allowing for the matrix to convert the chroma
subsample of the native video source signal to a lower format of the same resolution.
Where the matrix is fed with a source signal that is (for instance) 4K 60Hz 4:4:4 but any screen connected to any of the 8 HDMI
outputs cannot accept this native chroma subsample, the matrix will automatically convert the signal to 4K 60Hz 4:2:0.
Please note:
The CMX88AB matrix cannot automatically down-convert a 4:2:2 chroma subsample.
Automatic Video Resolution Conversion
The EDID configuration of the CMX88AB can be altered per input by using the Web-GUI of the Matrix, using serial commands per
the API details towards the rear of this manual, or using the supplied remote control (details above).
Please note:
The 4K auto down-conversion feature will read the EDID from the display and output a suitable 4K video
resolution. The EDID handshake will not know if the method of HDMI signal distribution between Matrix and display is capable
of supporting all 4K resolutions. It may be necessary to use EDID management to lower the source resolution to support the
method of signal distribution required, especially if the displays being used are only capable of 1080p (or lower) support.
Adjusting EDID Settings
Audio Breakout
The CMX88AB Matrix includes audio breakout from the selected HDMI zone output to associated analogue L/R audio and coaxial
digital outputs. Extracted audio will be concurrent with the corresponding HDMI video output.
1.
Coaxial digital output - Output 5
2.
Analogue pre-amp line level output 3.5mm stereo jack - Output 5
Please note:
The CMX88AB Matrix does not down-mix multi-channel digital audio signals.
8
7
6
5
4
3
2
1
Output
I
Coaxial
Coaxial
Coaxial
Coaxial
Coaxial
Coaxial
Coaxial
Coaxial
L
L
L
L
L
L
L
L
TCP/IP
RS-232
R Ctrl
DC 12V
R
R
R
R
R
R
R
R
HDMI 1
HDMI 2
HDMI 3
HDMI 4
HDMI 5
HDMI 6
HDMI 7
HDMI 8
Input
HDMI 1
HDMI 2
HDMI 3
HDMI 4
HDMI 5
HDMI 6
HDMI 7
HDMI 8
Output
CMX88AB
8x8 4K HDMI 2.0 Matrix
Output
Input
Output
Input
2
1
