Unique Broadband Systems Ltd. DRU1KW User Manual

 

 

The Combined DRU LB sub-system should be shut down in the following sequence: 
 

1.  Using the LBE GUI, set SysOperatingMode to standby. 

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The LBE GUI Cpl1ForwardPwr reading should decrease by 3 dB. 

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The LB HPA LED will be illuminated blue. 

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The TRMS LB Status LED will be extinguished. 

2.  Switch OFF the LB HPA PSU circuit breaker (CB1, CB2, CB3 and CB4), located on the 

LB cabinet PDU. 

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The Norm LED’s on the LB HPA PSU’s (PS 1, PS2, PS3 and PS4) will be 

extinguished. 

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The front panel LED’s on the LB HPA’s (HPA 1, HPA 2, HPA 3 and HPA 4) will flash 

green and red alternately. 

3.  Switch OFF the TSC-L 5A circuit breaker, located on the BMS front panel. 

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The LED’s on the LB HPA’s will be extinguished. 

4.  Switch OFF the LBE 25A circuit breaker, located on the BMS front panel. 

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The LBE Power LED will be extinguished and the internal fan will turn off. 

5.  Switch OFF FAN 1 / FAN 2 (CB 9) and the FAN 3 / FAN 4 (CB10) circuit breakers, 

located on the LB cabinet PDU. 

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The HPA compartment fans will turn off (fans cannot be heard) and that the PDU 
FAN 1 and 2 LEDs will be extinguished. 

 
 

 
 

 
 
 

 
 

 
 

 
 

 
 
 

 
 

 
 

 
 

 
 
 

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