Comprehensive CSW-RGBHV88A - Manual (Page 13)

RGBHV/Stereo Audio Matrix Switcher
9
Audio connection is 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 appliance or some cases with low
technical demand.
Take the audio signal line for example: 1.Unbalanced: pin “G” connect to SLEEVE, pin “+” connect to
TIP, pin “–” connect to pin “G”; 2.Balanced: pin “G” connect to SLEEVE, pin “–” connect to RING, pin “+”
connect to TIP. As shown in the F 6-3:
F 5-3 Balanced/unbalanced connection on captive screw connector
To select which connection is up to the interface of the device. When available, the balanced
connection is the first choice. Before connection, please read the command or relevant demand in the
user manual carefully. In some cases, maybe there is balanced in source signal end but unbalanced in
the destination end. If in a nonstandard case, it is done to connect balanced for the balanced end and
unbalanced for unbalanced end. But if in a standard one, the converter must be used to switch the
signals as the same, balanced or unbalanced.
6. Operation of the Control Panel
6.1 Front Panel Description
“AV” AV synchronal button: To transfer video and audio signal synchronously by the switcher
Example: To transfer both the video and the audio signals from input channel No.3 to
output channel No.4.
Operation: Press buttons in this order “AV”,“3”,, “4””.
“VIDEO” Video button: To transfer only video signals from input channel to output channel
Example: To transfer video signals from input channel No.3 to output channel No.4.
Operation: Press buttons in this order “VIDEO”, “3”, “4”.
“AUDIO” Audio button: To transfer only audio signals from input channel to output channel
Example: To transfer audio signals from input channel No.2 to output channel No.3.
Operation: Press buttons in this order ““AUDIO”, “2”, “3””.
“1,2,3,4” I/O Keypads: Keys to select I/O channels.
Example: To transfer input channel No.3 to output channel No.1
Operation: Press buttons in this order : “3” in INPUT area, “1” in OUTPUT area.