Paradise 205486 REV F manual absence of 10 MHz reference to the stand-byBUC

Models: 205486 REV F

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absence of 10 MHz reference to the stand-by BUC

BUC

Amp 1

L Band Input- POL 1

 

10MHz

 

BUC

Amp 2

L Band Input- POL 2

 

10MHz

 

BUC

Amp 3

No path for 10MHz to

 

the Standby BUC

 

 

RCP2-1200

 

Redundant Controller

Alarm

 

Inputs

 

RF OUT-POL 1

RF OUT-POL 2

Switch Drive

Figure 7-25: 1:2 Redundant System with External Reference showing the

absence of 10 MHz reference to the stand-by BUC

A special case of the 1:2 Redundant System exists when an external reference is required of the system. With an external 10 MHz reference input on each polarity input to the system, the standby amplifier will not receive a reference signal and therefore would be in a faulted condition. In this state, the redundant controller will not allow the standby amplifier to come on line if a failure occurs with amplifier 1 or amplifier 3. See Figure 7-25.

Operations Manual, HPA2, Compact Outdoor SSPA

205486 REV F

63

Page 63
Image 63
Paradise 205486 REV F manual absence of 10 MHz reference to the stand-byBUC