Chapter 4 _______________________________________________________________ Installation 
VAISALA _______________________________________________________________________ 97 
5.  Now place the ladder behind the receiver mast and check the 
orientation of the support unit.  
6.  Loosen the two fastening screws (hex socket, size 4) at the right 
side (operator's view) of the mast top. The complete support unit 
must now be turnable. See Figure 52 below. 
 
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Figure 52  Fastening Screws of Support Unit 
7.  Align the support unit horizontally to the position where the 
transmitter mast will be located in the future. Use the sight hole in 
the rear plate together with the sight. See Figure 53 on page 98.