Unique Broadband Systems Ltd. DRU1KW User Manual

 

 

Several components mounted on the HPA compartment frame 
backplane must be loosened prior to installing the HPA’s.  Not doing so 

could damage a number of blind mate connectors. 

 
During product shipment, shear forces may cause some components mounted to the HPA 
compartment frame backplane to become slightly misaligned.  It is important that these 

components are loosened prior to installing the HPA’s.  Loosening these components allows 
the HPA’s to slide into the HPA compartment frame with fewer restrictions. 

 
Please refer to Figure 3-19 for the locations of the components that should be loosened. 

 

1.  Loosen the four (4) 8-32 socket head cap screws which secure the 4-way combiner 

to the backplane (Figure 3-19, item 1 and item 2). 

2.  Loosen the two (2) 8-32 socket head cap screws which secure the HPA 4 input 

adapter to the backplane (Figure 3-19, item 3). 

3.  Loosen the two (2) 8-32 socket head cap screws which secure the HPA 3 input 

adapter to the backplane (Figure 3-19, item 4). 

4.  Loosen the two (2) 8-32 socket head cap screws which secure the HPA 2 input 

adapter to the backplane (Figure 3-19, item 5). 

5.  Loosen the two (2) 8-32 socket head cap screws which secure the HPA 1 input 

adapter to the backplane (Figure 3-19, item 6). 

 
Once the HPA compartment frame backplane components have been loosened, the installer 
can proceed to install the HPA’s. 

 
 

 
 

 
 

 
 
 

 
 

 
 

 
 

 
 
 

 
 

SX03-20000-01-M01 3-23