Comtech EF Data HPCST-5000 - Manual (Page 18)

Introduction High-Power C-Band Satellite Terminal
1–2 Rev. 0
The HPCST-5000 is a complete, high-power C-Band satellite terminal system consisting
of the following components (Table 1-1):
Table 1-1. HPCST-5000 Major Assemblies
Nomenclature Description
Single-Thread Configuration
Low Noise Amplifier (LNA) 65
! KLNA with TRF (Optional: Noise Temperatures available)
Radio Frequency Transceiver (RFT) Consists of an:
"
Up converter with 70 (140) MHz IF input
"
Down converter with a 70 (140) MHz IF output
"
M&C microprocessor
"
Power supply
Solid-State Power Amplifier (SSPA) Consists of a solid-state power amplifier.
Redundancy Configuration
1:1 Redundant LNA Plate Consists of transmit reject filter, redundant LNAs (65
!K), and a C-
Band waveguide switch.
Radio Frequency Terminal (RFT) Consists of two radio frequency terminal (RFT) assemblies.
C-Band SSPA Assembly Consists of two solid-state power amplifiers.
Redundancy Switch Unit (RSU-503L) Along with a redundancy cable/hardware kit, the RSU-503L
provides the system with a single M&C interface, redundancy
switchover control, and cabling.
The HPCST-5000 outdoor terminal consists of weatherproof components for uplink and
downlink requirements. The redundant assemblies have been designed for antenna or pole
mounting. The system has a single user interface connector for remote M&C.
In the TX (uplink) direction, the terminal accepts a 70 (140) MHZ IF signal and TX it in
the 5.850 to 6.425 GHz frequency band. This output is coupled through an N-type
connector to the external high power amplifier (SSPA) assembly.
In the redundant system, a high power output to the antenna through a waveguide transfer
switch is provided. A high-power termination is included on the offline channel port of
the waveguide switch for testing.
In the RX (downlink) direction, the terminal accepts an RF signal in the 3.6 to 4.2 GHz
band, and converts the signal to a 70 (140) MHz IF output. The LNA assembly has a
type-N coax output routed to RFT RX RF inputs. The RFT TX output power level at 1 dB
compression used to drive the external SSPA is +8 dBm maximum. The up and down
converters are dual conversion, configured with a single or dual synthesizer for TX and
RX transponder selection.
The onboard microcomputer monitors and controls (M&C) the operational parameters of
the HPCST-5000 components. The M&C system enables the user to locally or remotely
control functions such as:
" Output power level " TX/RX channel frequency
" Output On/Off