User's Manual Part 1
Table Of Contents
- Instruction Book Introduction
- Customer Service
- Technical Assistance Center
- Sections 1-6
- Section 1 General
- Section 2 Functional Description
- 2.1 General
- 2.2 System Functional Overview
- 2.3 Main Functions
- 2.3.1 Signal Processing Unit (SPU) Sub-assembly
- Figure 2 - 2 Signal Processing Unit (SPU)
- Figure 2 - 3 Sirius Signal Processing Unit (SPU) Functional Block Diagram
- Figure 2 - 4 VSAT (L-Band) Receiver Panel
- Figure 2 - 5 Modulator Module
- Figure 2 - 6 Up-Converter Module Panel
- Figure 2 - 7 Controller Board Panel
- Figure 2 - 8 Main Controller Board Functional Block Diagram
- Figure 2 - 9 Uninterruptible Power Supply (UPS)
- 2.3.1 Signal Processing Unit (SPU) Sub-assembly
- 2.4 High Power Amplifier (HPA)
- 2.5 S-Band Output Filter
- 2.6 Output Coupler
- 2.7 Power Distribution
- 2.8 Junction Box Assembly
- Section 3 Installation
- 3.1 Introduction
- 3.2 Safety On Site
- 3.3 INSTALLATION OVERVIEW
- 3.4 SITE POWER
- 3.5 REPEATER UNPACKING AND INSPECTION
- 3.6 SUGGESTED TOOL LIST
- 3.7 ANTENNA INSTALLATION
- 3.8 REPEATER CABINET INSTALLATION
- 3.9 CABLE CONNECTIONS (see Figure 3 - 2)
- 3.10 POST-INSTALLATION INSPECTION/TEST
- 3.11 Post Installation Inspection/Test Form
- Section 4 Turn-Up and Testing
- 4.1 General
- 4.2 Test Equipment Required
- 4.3 Repeater Provisioning
- 4.4 Field Tests
- 4.5 Connect Repeater System to NMC
- 4.6 Field Test Report
- Section 5 Operation
- 5.1 GENERAL
- 5.2 Control and Communication
- 5.3 Modes of Operation
- 5.4 GRAPHICAL USER INTERFACE (GUI)
- 5.5 GUI Menu Descriptions
- 5.5.1 Status Sub-Menu Breakdown
- 5.5.2 Configuration (Config) Sub-Menu Breakdown
- Figure 5 - 7 GUI Main Menu Config Drop-Down Menu
- Figure 5 - 8 Config Modulator Sub-Menu
- Figure 5 - 9 Repeater ID Screen
- Figure 5 - 10 Modulator Mode Screen
- Figure 5 - 11 Overlay Screen
- Figure 5 - 12 Delays Screen
- Figure 5 - 13 Modulator IP Screen
- Figure 5 - 14 VSAT Screen
- Figure 5 - 15 Repeater Output Level Screen
- Figure 5 - 16 Coupler Screen
- Figure 5 - 17 GPS Screen
- Figure 5 - 18 Temperature Screen
- Figure 5 - 19 Repeater Operating Mode Screen
- Figure 5 - 20 PPP Dial In Parameters Screen
- Figure 5 - 21 PPP Dial Out Parameters Screen
- Figure 5 - 22 PPP Misc Parameters Screen
- Figure 5 - 23 Site Screen
- 5.5.3 Alarms Sub-Menu Breakdown
- 5.5.4 NMS Users Sub-Menu Breakdown
- 5.5.5 System Parameters Menu
- Figure 5 - 28 Access to System Parameters Sub-Menu
- Figure 5 - 29 System Parameters Identification Screen
- Figure 5 - 30 System Parameters Access Control Screen
- Figure 5 - 31 System Parameters Network Parameters Screen
- Figure 5 - 32 System parameters SNMP Parameters Screen
- Figure 5 - 33 System Parameters System Time Screen
- Figure 5 - 34 System Heartbeat Time Screen
- Figure 5 - 35 System Parameters System Reset Screen
- Figure 5 - 36 System Parameters Upgrade Screen
- Figure 5 - 37 Upgrade Dialog Box (Sheet 1 of 2)
- 5.6 COMMAND LINE INTERFACE (CLI)
- 5.7 REPEATER OPERATING PROCEDURES
- 5.8 CONTROLS, INDICATORS, and CONNECTORS
- 5.8.1 Signal Processing Unit (SPU) Controls and Indicators
- 5.8.2 High Power Amplifier (HPA) Controls and Indicators
- 5.8.3 Power Distribution Unit (PDU) Front Panel Controls
- 5.8.4 VSAT Receiver Rear Panel Connectors
- 5.8.5 Up-Converter Rear Panel Connectors
- 5.8.6 Modulator Rear Panel Connectors
- 5.8.7 Main Controller Rear Panel Connectors
Functiona
l
Description 3EM21522AAAA
DTR-0200-SA-SIRIUS Issue 1, March 2008
2-20
2.4.3
HPA PREAMPLIFIER (PREDRIVER)
The pre-driver is the first amplifying stage of the HPA. It employs three stages of
amplification-a Monolithic Microwave Integrated Circuit (MMIC) amplifier and two
LDMOS transistors. The pre-driver raises the output power of the RF from the up-
converter by 38 dB and feeds the amplified RF into the HPA driver amplifier. The RF
signal from the pre-driver input is also coupled to the RF detector circuit which pro-
vides detected RF to the HPA controller for monitoring and gain control. The coupled
RF signal is routed through a PIN diode attenuator to maintain the HPA gain con-
trol loop. The pre-driver amplifier, via a Gallium Arsenide (GaAs) MMIC RF switch,
can turn the RF signal on or off by way of a logic level HIGH RF Shutdown TTL con-
trol signal.
2.4.4
HPA DRIVER AMPLIFIER
The driver amplifier, employing two parallel amplifiers, receives the RF output from
the pre-driver and amplifies it by 13.3 dB. The output of the driver amplifier is fed
into a five-way splitter at a power level of 43 dBm.
2.4.5
HPA POWER SPLITTER
The five-way power splitter is connects directly to the HPA driver amplifier RF out-
put. The splitter evenly distributes this RF power to the five individual output power
amplifier modules.
2.4.6
POWER AMPLIFIER MODULES
The five power amplifier modules are identical to the driver amplifier module. These
modules are paralleled and receive equal inputs from the five-way power splitter.
The amplifiers each contribute a gain of 13.3 dB to their respective input, the five-
way combiner/coupler.
2.4.7
COMBINER/COUPLER
The five RF power amplifier outputs are combined into one via a zero-degree star
combiner. Two stripline couplers provide output signal sampling. One coupler’s out-
puts are terminated with SMA connectors and are used to provide external forward
and reflected RF monitoring ports. The other coupler’s outputs are detected using
true-type RF detectors installed on a coupler printed circuit board. These detected
signals are fed to the HPA Controller for control and monitoring purposes. The
detected signals and DC power for the on-board detectors are routed through 6-pin
Molex connectors installed on a coupler board. The 5-way combiner/coupler requires
external +5VDC ± 0.5 volts. When the combiner/coupler is installed on the HPA chas-
sis, the inputs are connected directly to the power modules’ output pins. The output
of the combiner is connected to the central conductor of the HPA output connector.