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Ku-Band Satellite Transceiver Revision 9
Operation MN/KST2000AB.IOM
3–24
The M&C is composed of the following sections:
• Microcontroller/UART • D to A and A to D converters
• Fault relays • ROM/RAM
• LNA power control • 1:1 redundancy logic
• Intermodule COMM interface • External I/O interface
The microcontroller is a Dallas 80C310 operating at 16 MHz. The microcontroller con-
tains 256 bytes of internal RAM. The external ROM is 29F040 (512 kbytes). The battery
backed RAM is 8 kbytes in size.
The non-volatile RAM allows the KST-2000A/B to retain configuration information
without prime power for 1 year.
The UART supports serial asynchronous communication (remote port) with a maximum
data rate of 19200 bit/s. The communications type can be EIA-232, EIA-485 (2-wire), or
EIA-422 (4-wire) half duplex.
The DAC supplies a voltage that fine tunes the reference oscillator operating frequency.
The ADC monitors the internal power supply voltages, as well as external temperature
and analog inputs from SSPAs and TWTAs.
The three fault relay outputs are failsafe. They will indicate a fault in the event of a power
outage. The three relays are uplink fault, downlink fault, and summary fault.
The M&C has built-in redundancy logic. It reads switch position and external status in-
formation from the waveguide switches and the other KST-2000A/B. It provides control
information based on these inputs.
The M&C has a step-up power supply that is enabled during switch transfers. The supply
generates +28VDC at more than 1 amp to control the waveguide switches. After the
switch transfer is complete, the +28VDC supply is shut down. The M&C has a switching
regulator that can generate +15VDC at 200 mA to power an external LNA/B. This volt-
age can be enabled or disabled via the remote interface. The M&C monitors the LNA
current and generates a fault if the LNA/B current draw increases or decreases exces-
sively.
The M&C can generate external discrete commands for operation of more than 25W
SSPAs and TWTAs. The M&C also monitors alarm and status outputs from these de-
vices.
The M&C communicates status and control information to the up converter, down con-
verter and 25 W and lower SSPAs via a high speed EIA-485 interface.
- Ku-Band Satellite Transceive 1
- Installation and O 1
- KST-2000A/B 3
- Customer Service 4
- Table of Contents 5
- Figures 9
- Preface MN/KST2000AB.IOM 10
- Preface 11
- Related Documents 12
- Warranty Policy 13
- Chapter 1. INTRODUCTION 15
- 1.1 Description 16
- 1.1.3 Areas of Operation: 17
- 1.1.4 Features 18
- 1.1.4.2 Other Features 19
- Ku-Band & 20
- DC Power 20
- DC Power & 22
- 10 MHz Ref 22
- 1.1.7 Redundant System 23
- 1.2 Specifications 24
- to + 140°F) 26
- Notes: 27
- Chapter 2. INSTALLATION 29
- . (see Note) 30
- 2.3. Description of Options 31
- 2.4. Electrical Connections 32
- 2.4.1. Converter Unit 32
- 2.4.1.9 HPA Connector (J8) 38
- 2.4.2. Data SSPAs 41
- 2.4.3. LNA Connections 48
- 2.4.4. LNB Connections 48
- Chapter 3. OPERATION 49
- 3.1.1 Uplink Setup 51
- 3.1.2 Downlink Setup 52
- (2 places) 55
- PL/8085-2 55
- 3.4 Connector Descriptions 58
- 3.4.7 Other Connectors 63
- 3.5 Indicators Description 63
- Unit A Unit B 65
- 3.7 Reference Oscillator 70
- • Fault relays • ROM/RAM 72
- 3.11.1 Operation 77
- AND ISOLATION 81
- Chapter 4. FAULT INDICATION 81
- 4.2 Fault Isolation 82
- 4.3 Stored Faults 82
- Chapter 5. KEYPAD / DISPLAY 85
- 5.3 The Menu Structure 89
- 5.3.1 Configuration 90
- ] or [ X] to move the 91
- 5.3.2 Monitor 93
- 5.3.3 Faults 94
- 5.3.4 Utility 97
- 5.3.5 System 98
- or [ X] arrow buttons 99
- 5.3.6 Redundancy 100
- Operation MN/KST2000AB.IOM 102
- Appendix A. EQUIPMENT 103
- OUTLINE DRAWINGS 103
- TOLERANCE: +/- .02 (0.5) 108
- 5.67 (143.8) 110
- 5.12 (130.0) 110
- 2.55 (65) 110
- 1.58 (40) 110
- Type “N” 110
- Appendix B. TERMINAL MODE 111
- COMMANDS 111
- B.2 Message Structure 112
- B.2.1 Start Character 112
- B.2.2 Device Address 112
- B.2.3 Command/Response 113
- B.2.3 End Character 114
- B.3.3 Reset Commands 118
- <add/HS_’cr’ 119
- >add/HS_’cr’ 119
- B.3.5 Stored Faults 121
- B.3.6 Miscellaneous 124
- B.4.1 External Fault Mode 126
- Appendix C. SINGLE-THREAD 127
- EQUIPMENT MOUNTING 127
- C.1 Tools Required 128
- C.2.1 Spar Arm Mount 129
- Figure C-2 131
- C.2.2 Pole Mount 132
- Flat fitting plate 133
- Pipe block 133
- C.3 SSPA Installation 136
- C.4 LNA Installation 139
- C.5 Cable Installation 140
- Appendix D. REDUNDANT 141
- D.1 Tools Required 142
- D.2.1 Spar Arm Mount 143
- D.2.2 Pole Mount 146
- D.3 1:1 SSPA Installation 150
- D.4 1:1 LNA Installation 151
- D.5 Cable Installation 151
- Appendix E. FSK REMOTE 153
- CONTROL COMMANDS 153
- E.2 Basic Protocol 154
- E.2.1 Packet Structure 155
- E.2.2 Start Of Packet 155
- E.2.3 Address 155
- E.2.4 Instruction Code 155
- E.2.6 Message Arguments 158
- E.2.7 End Of Packet 158
- E.3 Commands and Query 158
- 2W SSPA – Item D=BV1 171
- Glossary 177
- Ω kilo-ohms 178
- Glossary MN/KST2000AB.IOM 180
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