Operating Manual V25/09.2019   
Ventus / Ventus-X / V200A
 
  Chapter 10 Connections  21 
10.7  SDI12 Connection 
When connecting the sensor to a SDI12 logger two option for the power supply are available: 
-  Power supply through the SDI12 12V line 
-  Power supply from a separate source, isolated from the logger 
The must be adapted to the individual power supply option 
 
 
Supply through the SDI12 BUS 
 
 
 
Note: when using this connection option the internal isolation of the 
Ventus
 power supply will be 
bypassed. 
 
Note: the resistor must be mounted at the end of the cable which it is connected to the logger. 
Otherwise the voltage drop over the cable may cause potential differences which prohibit 
communication. 
 
 
Supply from separate source