User Manual for RGBHV/Stereo-Audio Matrix COMM-TEC MTX Series
COMM-TEC GMBH
www.comm-tec.de
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2.4 Back Panel
Back panel 8 x 4 with Audio
Depending on the model of the matrix, the video signal I/O interface is made up of 4, 8 or 16 BNC female
terminals for each channel (R, G, B, H, and V). Audio signal I/O terminals are made up of 4, 8 or 16 5pin captive
screw terminals for each channel (left & right together). The channel numbers of the signal I/O terminals start
from channel 1 to the maximum number of channels depending on the model. The left audio channel is
indicated with L +/-, the right channel with R +/-. Common ground is connected to the middle pin (grounding
sign).
The MTX matrix switchers have an internal power supply with IEC female connector for power cord. There is a
9pin Sub D female connector for RS-232 port. An RJ-11 port (AUX Control) is for future expansion.
3. Installation
3.1 Hardware Installation
The MTX matrix switchers are rack-mountable using the holes in the front panel. Take a set of standard rack
screws and secure the unit into the rack. For ideal performance and easy wiring access it is advisable in a 19“
rack leave at least 1ru space above and below. Do not place high heat-producing equipment directly above or
below the enclosure.
3.2
RGBHV Connection
Use good quality 75Ohm coax cable for all video connections. Switch off all units while connecting sources and
destinations.
The RA MTX matrix switchers support RGBHV / RGBS / RGsB Computer Video signal sources. If the device
doesn’t have RGBHV output signal, use a VGA to RGBHV adapter cable or converter.
Use 5-core RGBHV coaxial cables and connect the sources and destinations devices through the BNC
connectors: R (red), G (green), B (blue), H (horizontal), V (vertical). Make sure the RGBHV connectors from the
source are connected to the destination in the same order, otherwise it will cause color loss or no output signal
at all.
3.3
Audio Connection
RGBHV Matrix switchers with audio come with terminal block connectors (captive screw terminals connectors)
located under the BNC connectors. There are two types of audio signals: balanced or unbalanced. Balanced
audio cables carry two signals per channel and ground while unbalanced audio cables only use one signal per
channel and a common ground. Both signal types can be connected to the RA MTX series.
