User's Manual

Chapter 2 System Description

2.3.14 DRU-2KW HPA Sub-system

The DRU-2K

W HPA sub-system consists of two (2) sets of HPA’s, with each set containing four

(4) 400W HPA’s. In each set, the four (4) HPA’s are combined to produce an output power

level of 1.4 kW (61.4 dB). The HPA sets are then combined, using a magic tee, to produce an

output power level of 1.74 kW (62.4 dBm) post filter.

The HPA sub-system includes a transmission sub-system controller (TSC), which uses RS-485

serial interfaces to communicate with the HPA’s and HPA/TSC transmit output coupler/RF

detector within the HPA sub-system. The HBE or LBE are connected directly to the TSC via a

RS-422 serial interface.

The HPA sub-system includes:

 Power Distribution Unit (PDU)

 Transmission Sub-system Controller (TSC)

 4-way Power Splitter

 4x High Power Amplifier Power Supply Units (HPA PSU’s), with 8x Rectifier Modules

 8x 400W HPA’s

 2x 4-Way Hybrid Combiners w/Loads

 3x HPA/TSC Transmit Output Coupler/RF Detectors

 Magic Tee

SX03-30000-01-M01

2-26