User's Guide ______________________________________________________________________
34 __________________________________________________________________ M210667EN-C
Interface Unit
The interface unit is attached to the mast construction. An optional
junction box with a protection circuitry for rough overvoltage can be
mounted below the interface unit. The weather protection cover of the
interface unit is split into two pieces. The lower part covers the optional
junction box and the upper part protects the interface unit electronics
box.
The interface unit contains all the needed terminals and power supply. In
the LT31 receiver, the interface unit also contains the master CPU which
controls the entire measurement system.
If the battery backup option is installed, the related components are also
located inside the interface unit.
Figure 8 below shows an opened interface unit.
0806-035
Figure 8
Interface Unit