DVI /Audio Matrix Switcher 8x8
PTN Electronics Limited
7
www.PTN-electronics.com
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
Figure 5-2
:
Unbalanced Input
Tip
Tip
Sleeve
Balanced Input
Tip
Ring
Tip
Ring
Unbalanced Output
Tip
Tip
Sleeve
Sleeves
Sleeves
Balanced Output
Tip
Ring
Tip
Ring
Sleeves
Figure 5-2 5 bit 3.8mm Audio Balanced/unbalanced Connection
Which connection to select 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.
5.3. Connection of RS232 Communication Port
This RS232 communication port is a female 9-pin D connector. The definition of its
pins is as the table below.
No.
Pin
Function
1)
N/u
Unused
2)
Tx
Transmit
3)
Rx
Receive
4)
N/u
Unused
5)
Gnd
Ground
6)
N/u
Unused
7)
N/u
Unused
8)
N/u
Unused
9)
N/u
Unused
Figure 5-3 9HDF
5.4. Connection with Computer
When the switcher connects to the COM1 or COM2 of the computer with control
software, users can control it by that computer.
To control the switcher, users may use the public COM software.
Please refer the details in
Communication Protocol and Command Codes
.
