DVI /Audio Matrix Switcher 8x8
PTN Electronics Limited
6
www.PTN-electronics.com
5. System Connection
5.1. Introduction of the Interfaces
Figure 5-1 Interfaces of MDV88A
No.
Name
Description
①
DVI INPUTS
DVI input channels, 8 in total.
Female DVI-I connector.
②
AUDIO INPUTS
Audio input channels, 8 in total.
Phoenix connector.
③
DVI OUTPUTS
DVI output channels, 8 in total, female DVI-I
connector.
④
AUDIO OUTPUTS
Audio output channels, 8 in total.
Phoenix connector.
⑤
TCP/IP/RS232
RS232: Serial control port, 9-pin female
connector.
TCP/IP: network control port.
⑥
AC100V~240V
Alternating current for power supply.
5.2. Audio Signal Connection
The ports
AUDIO INPUTS
can be connected with any audio source devices, such as
DVD player. And the ports
AUDIO OUTPUTS
can be connected with amplifiers.
Audio connection is little complicated than video. It has two kinds of connection:
balanced and unbalanced.
The balanced connection transmits a pair of balanced signals with two signal cords.
Because interferences will have the same intensity and the opposite phases on the
two signal cords, it will be counteracted in the end. For the low frequency extent of the
audio signal, it would be easily interfered under long distance transmission. Therefore,
as an anti-interference connection, it is mostly used in audio connection of special
device.
The unbalanced connection transmits signals only with a signal cord. Without
counteraction, it can be interfered more easily. Accordingly, it is adopted for household
①
②
③
④
⑤
⑥