USER'S GUIDE  ____________________________________________________________________ 
42  ___________________________________________________________________ M211187EN-C 
18.  Attach the interface unit back in its original place in the rear panel. 
NOTE 
Make sure that the cables are not pressed between the interface unit and 
the rear panel. 
 
19.  Attach and close the radiation shield as shown in Figure 21 below.  
 
  1001-129   
Figure 21  Mounting Radiation Shield 
Inserting Battery for Optional FSB101 
In case an optional battery backup FSB101 is used, a battery charger 
module QBR101 is located inside the interface unit. A 2 Ah battery is 
packed separately and should be inserted into the interface unit as 
follows: 
1.  Open the shield and interface unit door with the provided key. 
NOTE 
Make sure the AC (mains) power and the battery backup are both OFF 
before you proceed with the next steps.