3. Product Overview  DVI-OPT-220-Pro series  – User's Manual  12
Electrical Connections
DVI-OPT220-Pro series devices transmit the video signal via multimode 
Neutrik OpticalCON Duo Connector
DVI-OPT-RX220-Pro and DVI-OPT-TX220-Pro models 
have      
        
channels, channel A and channel B. Only one channel 
is used (from channel A on the transmitter to channel B 
on the receiver). Neutrik opticalCON DUO is compatible 
with 2x LC connector.
Pin Assignment of Neutrik OpticalCON Duo Connector
Pin Signal
1 GND
2 Remote power for receiver DC out +15V
3 Remote power for receiver DC out +15V
4 GND
A Channel A
B Channel B
LC Connector
One channel of the Neutrik connector is not used by the extenders 
for signal transmission and it is internally connected to the LC 
break-out connector. For more information about  break-out 
connector see Application Example of Break-out Connector 
section.
SC Connector
DVI-OPT-RX220-ST-Pro and DVI-OPT-TX220-ST-Pro models 
supplied with ST optical connectors.
DVI Inputs and Outputs
29-pole DVI-I connectors, however only digital 
pins are internally connected. This way, user can 
plug in any DVI connector, but keep in mind that 
analog signals (such as VGA or RGBHV) are NOT 
processed.
INFO: Always use high quality DVI cable for connecting sources and 
displays!
B
A
1
4
RS-232 Control Port
Devices can be remote controlled through 
industry standard 9-pin D-SUB female connector 
located on the rear panel of the unit. Please use a 
standard RS-232 Male to Female cable (straight 
through).
D-sub connector pin assignment for standard RS-232
Pin nr. Pinout
1 NC - non-connected
2 
3 
4 DTR (Internally connected to Pin 6)
5 
6 DSR (Internally connected to Pin 4)
7 RTS (Internally connected to Pin 8)
8 CTS (Internally connected to Pin 7)
9 NC - non-connected
INFO: DVI-OPT-220-Pro extenders are DCE unit according to its pin-out. 
For more information see Serial Management section.
INFO: Factory default settings are the same in the transmitter and 
receiver: 9600 Baud, 8 data bit, 1 stop bit, no parity.
TTL outputs can be used to give a signal to any third-party 
device. Separate signals indicate the detected laser and 
the presence of the received DVI signal.
Alarm Outputs
DVI Detect: Indicates when a valid DVI clock signal is extracted 
is detected. Logic 0 (GND) means that a valid DVI signal cannot be 
extracted from the optical signal.
Laser Detect: Indicates when a laser beam is detected at the Neutrik 
connector. Logic 1 (+5V) means that a laser beam with the appropriate 
wavelength is detected. Logic 0 (GND) means that either there is no 
laser signal or its level is too low to be recognized.
GND: Ground reference signal for alarm outputs. Connected to chassis 
ground.
Compatible Plug Type
Phoenix
®
Laser detect
Pin 1: DVI detect (+5V)
Pin 2: Laser detect (+5V)
Pin 3: GRD
+5V
300Ω
300Ω