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Opto 232 Adapter 

 

RS-232 Bi-Directional Optically Isolated Adapter 

 

• 

Introduction 

 

The Opto232 is designed specially for the VSI-Pro but will 
work with any RS-232C device. It basically separates the 
ground signal from the transmitting device to the receiving 
device by optical LED devices.  

 

The specific application is to optically isolate the RS-232 sig-
nals and ground from cash registers to the VSI-Pro and the 
CCTV system. Many CCTV systems use many different power 
sources to power the cameras which are normally very far 
from the recording system. This can create power ground 
loops which make the ground signal of the CCTV system be at 
a higher voltage other than zero or ground. When this high 
voltage ground is connected to the cash register ground all 
kinds of problems can arise and can damage either the CCTV 
system or the cash register or both. Therefore isolating the 
ground signal via the Opto232 prevents this problem. 

 

 

• 

Function 

 

The Opto232 requires a power source for the VSI-Pro side 
and another power source from the cash registers side. Since 
the VSI-Pro can power external devices via the DTR (Pin4) 
and DSR (Pin6) of its DB9F connector an external power 
source for the VSI-Pro side is not required and no external 
power supply connector is supplied. Therefore if you use an-
other device other than the VSI-Pro you must make sure one 
of these pins can supply a minimum of 10 VDC or you must 
wire a user supplied external supply to one of these pins. 

 

Page 2 

Содержание Opto 232

Страница 1: ...Opto 232 Adapter Applications and Operation Manual...

Страница 2: ...e at a higher voltage other than zero or ground When this high voltage ground is connected to the cash register ground all kinds of problems can arise and can damage either the CCTV system or the cash...

Страница 3: ...ld of a DB9 connector is normally connected to the shield of the cable to eliminate RFI and EMI interference in the RS 232 signal In the Opto232 the metal shield of each DB9 connector is not connected...

Страница 4: ...signal with the VSI Pro ground directly to the DVR before the Op to232 and isolate the ground from the DVR from the cash reg ister If you wish to isolate the ground of the VSI Pro from the DVR then y...

Страница 5: ...onnected to power of the Opto232 OFF N C 9 N C DB9F from Cash Register Side 1 N C 2 RXD 3 TXD 4 DTR JP1 1 2 ON Connected to power the Opto232 1 2 OFF Not Connected to power the Opto232 JP2 3 4 ON Shor...

Страница 6: ...Page 6 Opto 232 Adapter JP1 2 4 1 3 JP4 2 4 1 3 JP3 2 4 Hydra Regcom 2 1mm X 5 5mm DC Coax Jack...

Страница 7: ...CR 802 or Plug Direct Multi Function Cable M Cash Register F Use Standard Emulate Tap Cable M F VSI Pro CR 802 or Plug Direct USB RS232 Adapter VSI Pro Opto 232 Opto 232 VSI Pro Opto 232 with DVR Net...

Страница 8: ...232 Powered by PC VSI Pro to PC External Power PC PIN 7 8 PIN 4 6 Powered PIN 7 8 PIN 4 6 Powered VSI Pro VSI Pro M F Opto 232 Gender Changer Gender Changer CR 802 or Plug Direct CR 802 or Plug Direc...

Страница 9: ...Cable VSI Pro with Vnetworker Opto 232 CR 802 or Plug Direct CR 802 M F Vnetworker VSI Pro Opto 232 Use Standard Emulate Tap Cable VSI Pro Opto 232 Cash Register Emulate Protocol VSI Pro CR 802 or Pl...

Страница 10: ...______________________ _____________________________________ _____________________________________ _____________________________________ _____________________________________ _________________________...

Страница 11: ...______________________________ _____________________________________ _____________________________________ _____________________________________ _____________________________________ _________________...

Страница 12: ...om NORTH AMERICA AVE USA 2000 West Governors Circle Suite E Houston Texas 77092 Tel 281 443 2300 Fax 281 443 8915 Email aveus ave us com Website www americanvideoequipment com UK and Western Europe AV...

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