IMPORTANT NOTE: The information contained in this document supercedes all previously published
information regarding this product. Product specifications are subject to change without prior notice.
This manual provides installation and operation information for the Comtech EF Data
KST-12000 Ku-Band Satellite Terminal. This is a technical document intended for earth
station engineers, technicians, and operators responsible for the operation and
maintenance of the KST-12000.
Conventions and References
Metric Conversion
Metric conversion information is located on the inside back cover of this manual. This
information is provided to assist the operator in cross-referencing English to Metric
conversions.
Preface
Cautions and Warnings
Indicates information critical for proper equipment
IMPORTANT
WARN ING
function.
WARNING indicates a potentially hazardous situation that,
if not avoided, could result in death or serious injury.
Reporting Comments or Suggestions Concerning this Manual
Comments and suggestions regarding the content and design of this manual will be
appreciated. To submit comments, please contact the Comtech EF Data Technical
Publications Department: techpub@comtechefdata.com
Electrical Safety
The KST-12000 Ku-Band Satellite Terminal has been shown to comply with the
following safety standard:
• EN 60950: Safety of Information Technology Equipment, including
electrical business machines
The equipment is rated for operation over the range 100 - 240 volts AC. It has a
maximum power consumption of 40 watts, and draws a maximum of 400 mA.
The user should observe the following instructions:
IMPORTANT
Fuses
The KST-12000 is fitted with two fuses - one each for line and neutral connections.
These are contained within the body of the IEC power inlet connector, behind a small
plastic flap.
• For 230 volt AC operation, use T0.75A, 20mm fuses.
• For 115 volt AC operation, use T1.25A fuses, 20mm fuses.
FOR CONTINUED OPERATOR SAFETY, ALWAYS REPLACE THE FUSES
WITH THE CORRECT TYPE AND RATING.
Environmental
The KST-12000 must not be operated in an environment where the unit is exposed to
extremes of temperature outside the ambient range 0 to 50°C, precipitation, condensation,
or humid atmospheres above 95% RH, altitudes (un-pressurized) greater than 2000
meters, excessive dust or vibration, flammable gases, corrosive or explosive atmospheres.
Operation in vehicles or other transportable installations that are equipped to provide a
stable environment is permitted. If such vehicles do not provide a stable environment,
safety of the equipment to EN60950 may not be guaranteed.
The installation and connection to the line supply must be made in compliance to local or
national wiring codes and regulations.
The KST-12000 is designed for connection to a power system that has separate ground,
line and neutral conductors. The equipment is not designed for connection to power
system that has no direct connection to ground.
The KST-12000 is shipped with a line inlet cable suitable for use in the country of
operation. If it is necessary to replace this cable, ensure the replacement has an equivalent
specification. Examples of acceptable ratings for the cable include HAR, BASEC and
HOXXX-X. Examples of acceptable connector ratings include VDE, NF-USE, UL, CSA,
OVE, CEBEC, NEMKO, DEMKO, BS1636A, BSI, SETI, IMQ, KEMA-KEUR and
SEV.
International Symbols:
Symbol Definition Symbol Definition
~
Alternating Current
Fuse
Telecommunications Terminal Equipment Directive
In accordance with the Telecommunications Terminal Equipment Directive 91/263/EEC,
this equipment should not be directly connected to the Public Telecommunications
Network.
In accordance with European Directive 89/336/EEC, the CDM-600 Modem has been
shown, by independent testing, to comply with the following standards:
Emissions: EN 55022 Class B - Limits and methods of measurement of radio
interference characteristics of Information Technology Equipment.
(Also tested to FCC Part 15 Class B)
Immunity: EN 50082 Part 1 - Generic immunity standard, Part 1: Domestic,
commercial and light industrial environment.
Additionally, the CDM-600 has been shown to comply with the following standards:
EN 61000-3-2 Harmonic Currents Emission
EN 61000-3-3 Voltage Fluctuations and Flicker
EN 61000-4-2 ESD Immunity
EN 61000-4-4 EFT Burst Immunity
EN 61000-4-5 Surge Immunity
EN 61000-4-6 RF Conducted Immunity
EN 61000-4-8 Power frequency Magnetic Field Immunity
EN 61000-4-9 Pulse Magnetic Field Immunity
EN 61000-4-11 Voltage Dips, Interruptions, and Variations Immunity
EN 61000-4-13 Immunity to Harmonics
In order that the Modem continues to comply with these standards,
observe the following instructions:
IMPORTANT
• Connections to the transmit and receive IF ports (BNC female connectors) should
be made using a good quality coaxial cable - for example RG58/U (50Ω or
RG59/U (75Ω).
• All 'D' type connectors attached to the rear panel must have back-shells that
provide continuous metallic shielding. Cable with a continuous outer shield
(either foil or braid, or both) must be used, and the shield must be bonded to the
back-shell.
• The equipment must be operated with its cover on at all times. If it becomes
necessary to remove the cover, the user should ensure that the cover is correctly
re-fitted before normal operation commences.
This Comtech EF Data product is warranted against defects in material and workmanship
for a period of 1 year from the date of shipment. During the warranty period, Comtech EF
Data will, at its option, repair or replace products that prove to be defective.
For equipment under warranty, the customer is responsible for freight to Comtech EF
Data and all related custom, taxes, tariffs, insurance, etc. Comtech EF Data is responsible
for the freight charges only for return of the equipment from the factory to the customer.
Comtech EF Data will return the equipment by the same method (i.e., Air, Express,
Surface) as the equipment was sent to Comtech EF Data.
Limitations of Warranty
The foregoing warranty shall not apply to defects resulting from improper installation or
maintenance, abuse, unauthorized modification, or operation outside of environmental
specifications for the product, or, for damages that occur due to improper repackaging of
equipment for return to Comtech EF Data.
No other warranty is expressed or implied. Comtech EF Data specifically disclaims the
implied warranties of merchantability and fitness for particular purpose.
Exclusive Remedies
The remedies provided herein are the buyer's sole and exclusive remedies. Comtech EF
Data shall not be liable for any direct, indirect, special, incidental, or consequential
damages, whether based on contract, tort, or any other legal theory.
Disclaimer
Comtech EF Data has reviewed this manual thoroughly in order that it will be an easy-touse guide to your equipment. All statements, technical information, and
recommendations in this manual and in any guides or related documents are believed
reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and
they are not intended to be, nor should they be understood to be, representations or
warranties concerning the products described. Further, Comtech EF Data reserves the
right to make changes in the specifications of the products described in this manual at any
time without notice and without obligation to notify any person of such changes.
If you have any questions regarding your equipment or the information in this manual,
please contact the Comtech EF Data Customer Support Department.
When used in conjunction with Comtech EF Data modems, the KST-12000 is ideal for:
• Single digit carriers
• Multiple carrier operation over a 36 MHz bandwidth
Because the KST-12000 has a 70 MHz IF, it can also be used for other analog and digital
applications.
Small-to-medium size earth stations are easily constructed and commissioned with the
KST-12000.
When used with a high-gain antenna, the KST-12000 can also be used as the Radio Frequency (RF) electronics of a central hub in point-to-multipoint applications, as well as
serve as the terminal for the end points of the network.
1.1.2 Monitor and Control
An on-board microcomputer monitors and controls all operational parameters and system
status of the KST-12000. This powerful M&C system enables the user to locally or
remotely control functions such as:
• Output power
• Transmit/receive channel frequencies
The system also reports terminal configuration status, as well as fault status of all
KST-12000 components.
The KST-12000 can be initially configured using the:
• Keyboard/LCD controller within the enclosure.
• Connection of a common ASCII/RS-232 terminal connected to the serial port. A
simple command set allows total configuration control and retrieval of status
information.
If the indoor unit is a more sophisticated station M&C computer, the serial port can be set
to RS-485 for bus operation.
For more information on the M&C board, refer to Section 5.1.
The feed assembly consists of an LNA and a wave guide Transmit Reject Filter (TRF).
The TRF provides receive system protection from transmit energy fed back through the
antenna feed system.
The LNA standard noise temperature is 120°K, with optional upgrades down to 80°K,
depending upon Gain over Temperature (G/T) requirements.
1.1.4 Outdoor Enclosure
The RFT-1200 is a weatherproof enclosure housing the following:
• Solid-State Power Amplifier (SSPA)
• Up and down converters
• M&C microprocessor
• Power supply and cables which interface with an antenna subsystem
In the transmit (uplink) direction, the RFT-1200 accepts a 70 MHz IF signal, and
transmits it in the 14.0 to 14.5 GHz frequency band.
In the receive (downlink) direction, depending upon the frequency band options, the
terminal accepts an RF signal in either the full 10.95 to 12.75 GHz band, or within an
individual sub-band (10.95 to 11.7 GHz, 11.7 to 12.2 GHz, 12.25 to 12.75 GHz), and
converts the signal to 70 MHz IF output.
Power levels range from +8 dBm (for driving an external TWT) to 16W, depending upon
Equivalent Isotropically Radiated Power (EIRP) requirements. The SSPAs are
temperature compensated for maximum stability.
The up and down converters are dual conversion with individual synthesizers for
independent transmit and receive transponder selection.
Table 1-1 lists the specifications for the KST-12000 system, Table 1-2 lists the
specifications for the RFT-1200, and Table 1-3 lists the specifications for the LNA.
Notes:
1. For specifications on the RSU-503L, refer to Appendix A of the Comtech EF DataRSU-503 Redundancy Switch Unit Installation and Operation Manual.
2. For more information pertaining to KST-12000 specifications, refer to Comtech EF Data Specification SP/3044.
Table 1-1. KST-12000 System Specifications
Parameter Specification
RF Input Connector Type N Female
RF Output Connector WR-75G
TX Band 14.0 to 14.5 GHz
RX Band 10.95 to 12.75 GHz
10.95 to 11.7 GHz
11.7 to 12.2 GHz
12.25 to 12.75 GHz
IF Interface Two 70 MHz ports
IF Out Connector Type TNC female
IF In Connector Type TNC female
IF Out Impedance
IF Out Return Loss > 19 dB at 70 MHz, ± 18 MHz
IF In Impedance
IF In Return Loss > 19 dB at 70 MHz, ± 18 MHz
Frequency Range 10.95 to 12.75 GHz, in 2.5 MHz steps
10.95 to 11.7 GHz, in 2.5 MHz steps
11.7 to 12.2 GHz, in 2.5 MHz steps
12.25 to 12.75 GHz, in 2.5 MHz steps
Frequency Range (Optional) 10.95 to 12.75 GHz, in 1.0 MHz steps
10.95 to 11.7 GHz, in 1.0 MHz steps
11.7 to 12.2 GHz, in 1.0 MHz steps
12.25 to 12.75 GHz, in 1.0 MHz steps
Frequency Sense No inversion
Receiver Gain Variable 70 to 95 dB with LNA
Frequency Stability
Daily RX Freq Stability
Annual RX Freq Stability
Life RX Freq Drift
RX Drift/Temp
± 1 x 10
± 1 x 10
± 1 x 10
± 1 x 10
± 1 x 10
Gain Flatness ± 1.0 dB/36 MHz
Bandwidth 70 MHz with 1 dB BW of ± 18 MHz
Noise Figure 120°K (options to 90°K)
Receive Image Rejection -45 dBc
Linearity T.O.I. -35 dBc for 2 tones at -86 dBm Pin (with LNA)
Group Delay < 20 ns/36 MHz
Synth Lock Time < 1 second
RX (2.5 MHz steps)
Phase Noise
Frequency Range 14.0 to 14.5 GHz, in 2.5 MHz steps
Frequency Range (Optional) 14.0 to 14.5 GHz, in 1.0 MHz steps
Transmitter Power Options at 1 dB Compression
Point:
+8 dBm
2W
5W
8W
16W
Transmitter Power Option:
+8 dBm
2W
5W
8W
Gain at 1 dB compression point with customer
attenuator at 10 dB:
26 dB gain
63 dB gain
67 dB gain
69 dB gain
72 dB gain
Linear Gain with customer attenuator at 10 dB:
27 dB
64 dB
68 dB
70 dB
73 dB
16W
Transmitter Linear Gain vs. Customer Controlled
0 to 25 dB, factory setting = 10 dB
Attenuator Setting
TX Bandwidth 70 MHz with 1 dB BW of ± 18 MHz
Gain Flatness ± 1 dB/36 MHz
Gain Variation ± 2 dB max for flatness, temp, aging
TX Freq Stability
RS-232/RS-485
Transmit Frequency
Receive Frequency
Transmit Gain
Receive Gain
RF On/Off
LNA Fault
SSPA Fault
Up Converter Fault
Down Converter Fault
TX Synthesizer Fault
RX Synthesizer Fault
Table 1-3. Environmental and Physical Specifications
Parameters Specifications
Prime Power Options 90 to 230 VAC, 47 to 63 Hz, using a 6-foot cable North
American 3-prong plug or 48 VDC (40V to 60V)
2W
5W
8W
16W
100W
150W
200W
250W
450W
Power Consumption: +80 dBm
Physical:
RFT-12000 size
Weight
Enviromental:
Temperature:
Thermal Gradient
Humidity
Precipitation MIL-STD-810/ Method 506.2
Salt Fog MIL-STD-810/ Method 509.2
Sand and Dust MIL-STD-810/ Method 510.1
Altitude Operating: 0 to 15,000 ft
Solar Radiation
Safety Capable of UL, CSA, VDE, IEC
Emissions FCC Part 15, J, Class A
ES Discharge Operating: 10 kV
23H x 10.3W x 9.3D inches (58.4H x 26.16W x 23.6D cm)
38lbs (17.24kg) maximum
Operating: -40° to +55°C (-40° to 131°F)
Survival: -50° to +75°C (-58° to 167°F)
40°C/hour
0% to 100% Relative at -40° to +55°C (-40° to 131°F)
95% at 65°C/72hours
Figure 1-6. Dimensions for 1:1 Redundant LNA Plate
1–14
This chapter provides installation information for single-thread systems.
2.1 Unpacking
The KST-12000 terminal system is packaged in preformed, reusable foam inside a
cardboard carton.
Before unpacking the carton components, ensure that there is plenty of room around the
carton for workspace. A large table is recommended.
To remove the parts:
Note: Save the packing material for reshipment.
Chapter 2. SINGLE-THREAD
SYSTEM INSTALLATION
1. Cut the tape at the top of the carton where it is indicated OPEN THIS END.
2. Lift out the cardboard/foam spacer covering the unit.
3. Remove each part from the carton. Refer to Section 2.2.1 for a parts breakdown.
Because the RFT is heavy, assistance may be necessary to remove
the unit from the box.
CAUTION
2.2 Inspecting the Equipment
1. Carefully check the equipment for damage incurred during shipment.
2. Carefully check the equipment against the packing list shipped with the
equipment to ensure that the shipment is complete. Refer to the following
paragraphs.
2–1
KST-12000 Ku-Band Satellite Terminal Revision 4
Single-Thread System Installation MN/KST12000.IOM
2.2.1 Included Parts
A typical single-thread KST-12000 configuration contains the following components.
Notes:
1. Parts are not drawn to scale. Because each system can be custom ordered, it is
beyond the scope of this manual to provide the unlimited configuration
possibilities.
2. This chapter does not describe the installation procedures for amplifiers, high
performance LNAs, phase-locked LNBs, LNBs, and phase-locked block
converters. Comtech EF Data is herein abbreviated to CEFD.
Qty. Description Qty. Description
1 RFT outdoor unit.
1 Feed assembly.
RF OUT
SERIALNO.
MODELNO.
FREQUENCY
NOISETEMP GAIN
RF IN
Note: Pictured is a typical LNA. Other LNAs
are available, and can be ordered from an
CEFD marketing representative.
1 Envelope containing the test data sheet.
1 KST-12000 installation and operation manual.
1 Monitor and Control Software for CEFD
Satellite Terminals User’s Guide.
2–2
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