Comtech EF Data KST-12025 User Manual

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KST-1202

Ku Band Satellite Terminal

Installation and O

eration Manual

Part Number MN/KST12025.IOM Revision 1

Errata A

EFData Documentation Update

Subject:

Date: Document:

Part Number: Collating Instructions:

Chapter 4 (Operation)

March 6, 1997 KST-12025 Ku-Band Satellite Term inal I nst allation and Operation Manual, Rev. 1, dated August 16, 1996 MN/KST12025.EA1 Attach this page to 4-3 of t he m anual.

Comments:

The optional front panel display/keypad does not beep.

Change Specifics:

As incorrectly specified in Chapter 4, page 4-3:

The RFT-1225 responds by beeping whenever a key is pressed:

• A single beep indicates that the key pressed was a valid entry, and that the appropriate action was taken.

• A double beep indicates the key pressed was an invalid entry.

This information should be deleted.

Errata B

EFData Documentation Update

Subject:

Date: Document:

Part Number: Collating Instructions:

Changes to power input requirements.

April 9, 1997 KST-12025 Ku-Band Satellite Term inal System Installation and Operation Manual, Rev. 1, dated August 19, 1996 MN/KST12025.EB1 Attach this page to pages 1-1 and 2-21

Comments:

The following changes provide the correct information for AC power input requirements. This information will be incorporated into the next r evision.

Change Specifics:

As incorrectly specified Chapter 1, page 1-1:

Prime Power Options 90 to 230 VAC, 47 to 63 Hz, using a 6’ cable North

American 3-prong plug, or 48 VDC (40 to 50 V)

This information should be changed to:

Prime Power Options 190 to 240 VAC, 47 to 63 Hz, using a 6’ cable North

American 3-prong plug, or 48 VDC (40 to 50 V)

As incorrectly specified Chapter 2, page 2-21: The AC power is supplied to the RFT by a 3-pin power connector. Normal input voltage is 90 to 232 VAC,

47 to 63 Hz. This information should be changed to:

The AC power is supplied to the RFT by a 3-pin power connector. Normal input voltage is 190 to 240 VAC, 47 to 63 Hz.

Filename: T_ERRATA

EFData Corporation is an ISO 9001 Registered Company

KST-12025

KST-12025KST-12025

Ku-Band Satellite Terminal

Ku-Band Satellite TerminalKu-Band Satellite Terminal Installation and Operation Manual

Installation and Operation Manual

Installation and Operation ManualInstallation and Operation Manual

Part Number MN/KST12025.IOM Revision 1 August 16, 1996

Special Instructions:

This is the second edition of the manual. Change bars were not utilized. For an overview of changes made to Rev. 0, refer to the preface

(“Overview of Changes to Previous Edition”). This revision supersedes part number MN/KST12025 Rev. 0 dated September 13, 1995.

EFData Corporation, 2105 West 5th Place, Tem pe, Arizona 85281 USA, (602) 968-0447, FAX: (602) 921-9012.

Warranty Policy

This EFData Corporation product is warranted against defects in material and workmanship for a period of one year from the date of shipment. Duri ng the warranty period, EFData will, at its option, repair or replace produc t s that prove to be defective.

For equipment under warranty, the customer is responsible for f rei ght to EFData and all related custom, taxes, tariffs, ins urance, etc. EFData is responsible for the freight charges return the equipment by the same method (i.e., A i r, Express, Surface) as the equipment was sent to EFDat a.

for return of the equipment f rom the factory to the c ustomer. EFData will

only

Limitations of Warranty

The foregoing warranty shall not apply to defects resulting from improper installation or maintenance, abuse, unaut horized modification, or operati on outside of environmental specifi cations for the product, or, for damages that occur due t o improper repackaging of equipment for return to EFData.

No other warranty is expressed or implied. EFData Corporation 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. EFData Corporation shall not be liable for any direct, indirect, spec i al , incidental, or consequential damages, whether bas ed on contact, tort, or any other l egal theory.

Disclaimer

EFData has reviewed this manual thoroughly in order that it will be an easy-to-use guide to your equipment. All statements, technical information, and recommendations in this manual and in any guides or rel ated 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 unders t ood to be, representations or warranties concerning the products described. Further, EFData reserves the right to make changes in the specifications of the products described in this manual at any t ime without notice and without obligation to not i fy any person of such changes.

If you have any questions regarding your equipment or the information in this manual, please contact the EFData Customer Support Department. (For more informat i on, refer to the preface.)

About this Manual

This manual provides installation and operation information for the EFData KST-12025 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-12025.

Conventions and References Used in this Manual

Cautions and Warnings

CAUTION indicates a hazardous situation that, if not avoided, may result in minor or moderate injury. CAUTION may also be used to indicate other

CAUTION

unsafe practices or risks of property damage.

Preface

WARNING indicates a potentially hazardous situation that, if not avoided, could result in death or serious injury.

WARNING

Trademarks

Product names mentioned in this manual may be trademarks or registered trademarks of their respective companies and are hereby acknowledged.

Rev. 1 i

Preface KST-12025 Ku-Band Satellite Terminal

Overview of Changes to Previous Edition

A summary of changes to Rev. 0 includes:

• Cosmetic (non-technical) changes (e.g., formatting, spelling)

• Updated kits in Chapters 2 and 3

• Updated firmware information in Chapter 4 and Appendix A

• Removed appendix describing M&C system monitor program (it is now a

separate manual)

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 EFData Customer Support Department according to the following information.

ii Rev. 1

KST-12025 Ku-Band Satellite Terminal Preface

Customer Support

Contact the EFData Customer Support Department for:

• Product support

• Information on returning a product

• Information on upgrading a product

• Product training

• Reporting comments or suggestions concerning manuals

An EFData Customer Support representative may be reached at:

EFData Corporation Attention: Customer Support Department 2105 West 5th Place Tempe, Arizona 85281 USA

(602) 968-0447 (Main EFData Number) (602) 517-2444 (Customer Support Desk) (602) 921-9012 FAX

or, E-Mail can be sent to the Customer Support Department at:

service@efdata.com

To return an EFData product (in-warranty and out-of-warranty) for repair or replacement:

1. Request a Return Material Authorization (RMA) number from the EFData Customer Support Department.

Be prepared to supply the Customer Support representative with the model number, serial number, and a description of the problem.

2. To ensure that the product is not damaged during shipping, pack the product in its original shipping carton/packaging.

3. Ship the product back to EFData. (Shipping charges should be prepaid.)

For more information regarding the warranty policies, refer to the disclaimer page located behind the title page.

Rev. 1 iii

Preface KST-12025 Ku-Band Satellite Terminal

This page is intentionally left blank.

iv Rev. 1

1. INTRODUCTION....................................................................................................1–1

1.1 Description................................................................................................................................................ 1–1

1.1.1 Applications......................................................................................................................................... 1–4

1.1.2 Monitor and Control............................................................................................................................ 1–4

1.1.3 LNA Assembly.................................................................................................................................... 1–5

1.1.4 Outdoor Enclosure .............................................................................................................................. 1–5

1.2 Options........................................................................................................................................................ 1–6

1.2.1 Configurations..................................................................................................................................... 1–6

1.2.2 Equipment........................................................................................................................................... 1–6

1.3 Specifications.............................................................................................................................................. 1–7

2. SINGLE THREAD SYSTEM INSTALLATION.......................................................2–1

2.1 Unpacking................................................................................................................................................... 2–1

2.2 Inspecting the Equipment.......................................................................................................................... 2–2

2.2.1 Included Parts...................................................................................................................................... 2–2

2.3 RFT Installation......................................................................................................................................... 2–6

2.3.1 Tools Required.................................................................................................................................... 2–7

2.3.2 Vertical Pole Installation..................................................................................................................... 2–8

2.3.2.1 Round Pole................................................................................................................................... 2–8

2.3.2.2 Square Pole................................................................................................................................. 2–15

2.3.3 Spar Installation ................................................................................................................................ 2–16

2.4 LNA and Flexible Waveguide Installation ............................................................................................. 2–18

2.5 External Connections............................................................................................................................... 2–19

2.5.1 TX/IF Input (J1)................................................................................................................................ 2–20

2.5.2 TX/RF Output (J2)............................................................................................................................ 2–20

2.5.3 RX/IF Output (J3)............................................................................................................................. 2–20

2.5.4 RX/RF Input (J4)............................................................................................................................... 2–20

2.5.5 Prime Power (J5)............................................................................................................................... 2–21

Rev. 1 v

Table of Contents KST-12025 Ku-Band Satellite Terminal

2.5.6 Serial Remote Control (J6)................................................................................................................ 2–21

2.5.7 GND.................................................................................................................................................. 2–23

3. REDUNDANT SYSTEM INSTALLATION ..............................................................3–1

3.1 Unpacking................................................................................................................................................... 3–2

3.2 Inspecting the Equipment.......................................................................................................................... 3–2

3.2.1 Included Parts...................................................................................................................................... 3–3

3.3 RFT Installation......................................................................................................................................... 3–7

3.3.1 Tools Required.................................................................................................................................... 3–8

3.3.2 Vertical Pole Installation..................................................................................................................... 3–9

3.3.2.1 Round Pole................................................................................................................................... 3–9

3.3.2.2 Square Pole................................................................................................................................. 3–18

3.3.3 Spar Installation ................................................................................................................................ 3–19

3.3.4 1:1 Redundant Plate Installation........................................................................................................ 3–23

3.3.5 Waveguide Switch Installation.......................................................................................................... 3–24

3.4 RSU-503L Installation............................................................................................................................. 3–26

3.5 External Connections............................................................................................................................... 3–26

4. OPERATION..........................................................................................................4–1

4.1 System Operation....................................................................................................................................... 4–1

4.2 Remote Control.......................................................................................................................................... 4–2

4.3 Front Panel Display/Keypad..................................................................................................................... 4–2

4.3.1 Front Panel Controls............................................................................................................................ 4–3

4.3.2 Menu Explanations.............................................................................................................................. 4–7

4.3.2.1 Configuration................................................................................................................................ 4–7

4.3.2.2 Monitor......................................................................................................................................... 4–9

4.3.2.3 Faults.......................................................................................................................................... 4–10

5. THEORY OF OPERATION....................................................................................5–1

5.1 Monitor and Control ................................................................................................................................. 5–1

5.1.1 EEPROM Memory.............................................................................................................................. 5–3

5.1.2 Remote Interface................................................................................................................................. 5–3

5.1.2.1 Remote Interface Specification..................................................................................................... 5–4

5.1.3 Terminal Default Conditions............................................................................................................... 5–4

5.1.4 Theory of Operation............................................................................................................................ 5–4

5.1.5 M&C Board Connector Pinouts.......................................................................................................... 5–6

5.1.5.1 EIA-232-C/485 Remote Control (J1)........................................................................................... 5–6

5.1.5.2 Remote Relay Control, J2 DB15-Female ..................................................................................... 5–6

5.1.5.3 HPA, PS, U/C and D/C, J3 DB37-Male....................................................................................... 5–7

5.1.5.4 Synthesizers (DC/UC/LO), J4 DB37-Female ............................................................................... 5–8

5.1.5.5 Keypad Display, 24-Pin (12 x 2) Ribbon Connector (J5)............................................................. 5–9

5.1.6 Test Points and LEDs........................................................................................................................ 5–10

vi Rev. 1

KST-12025 Ku-Band Satellite Terminal Table of Contents

5.2 High Stability Oscillator.......................................................................................................................... 5–10

5.2.1 Specifications.................................................................................................................................... 5–10

5.3 IF Local Oscillator................................................................................................................................... 5–12

5.3.1 Specifications.................................................................................................................................... 5–12

5.4 Synthesizer................................................................................................................................................ 5–13

5.4.1 Specifications.................................................................................................................................... 5–13

5.4.2 Theory of Operation.......................................................................................................................... 5–13

5.5 Down Converter....................................................................................................................................... 5–14

5.5.1 Specifications.................................................................................................................................... 5–15

5.5.2 Theory of Operation.......................................................................................................................... 5–17

5.6 Up Converter............................................................................................................................................ 5–17

5.6.1 Specifications.................................................................................................................................... 5–18

5.6.2 Theory of Operation.......................................................................................................................... 5–20

6. MAINTENANCE.....................................................................................................6–1

6.1 Test Points and LEDs ................................................................................................................................ 6–1

6.2 Fault Isolation............................................................................................................................................ 6–2

APPENDIX A. REMOTE CONTROL OPERATION................................................... A–1

A.1 General ........................................................................................................................................................A–1

A.2 Message Structure ......................................................................................................................................A–2

A.2.1 Start Character.......................................................................................................................................A–2

A.2.2 Device Address......................................................................................................................................A–2

A.2.3 Command/Response..............................................................................................................................A–3

A.2.4 End Character........................................................................................................................................A–3

A.3 Configuration Commands/Responses .......................................................................................................A–4

A.4 Status Commands/Responses.....................................................................................................................A–7

Rev. 1 vii

Table of Contents KST-12025 Ku-Band Satellite Terminal

Figures

Figure 1-1. KST-12025 Ku-Band Satellite Terminal...................................................................................... 1–2

Figure 1-2. Redundant LNA Plate................................................................................................................... 1–3

Figure 1-3. KST-12025 Terminal Block Diagram........................................................................................... 1–3

Figure 1-4. LNA Dimensions........................................................................................................................ 1–11

Figure 1-5. Dimensions for 1:1 Redundant LNA Plate ................................................................................. 1–12

Figure 1-6. RFT-1225 Dimensions................................................................................................................ 1–13

Figure 2-1. RFT External Connections.......................................................................................................... 2–19

Figure 2-2. Serial Adapter Cables............................................................................................. .................... 2–23

Figure 3-1. 1:1 Redundant LNA Plate........................................................................................................... 3–23

Figure 3-2. Installed Waveguide Switch........................................................................................................ 3–24

Figure 4-1. RFT-1225 Terminal Keypad......................................................................................................... 4–2

Figure 5-1. M&C Card.................................................................................................................................... 5–2

Figure 5-2. M&C Jumper Placement at JP3.................................................................................................... 5–3

Figure 5-3. M&C Functional Block Diagram.................................................................................................. 5–5

Figure 5-4. High Stability Oscillator Block Diagram.................................................................................... 5–11

Figure 5-5. IF LO Block Diagram................................................................................................................. 5–12

Figure 5-6. Down Converter Synthesizer Diagram........................................................................................ 5–14

Figure 5-7. Up Converter Synthesizer Diagram............................................................................................ 5–14

Figure 5-8. Down Converter Block Diagram................................................................................................ 5–16

Figure 5-9. Up Converter Block Diagram..................................................................................................... 5–19

Figure 6-1. RFT-1225 Inside Front View........................................................................................................ 6–3

Figure 6-2. RFT-1225 Inside Rear View......................................................................................................... 6–4

Tables

Table 1-1. KST-12025 System Specifications................................................................................................. 1–7

Table 1-2. RFT-1225 Specifications............................................................................................................... 1–8

Table 1-3. LNA Specifications...................................................................................................................... 1–10

Table 2-1. Rear Panel Connectors ................................................................................................................. 2–19

Table 2-2. RFT-1225 Remote Control Connector, J6................................................................................... 2–22

Table 4-1. Main Menu..................................................................................................................................... 4–4

Table 4-2. Configuration Menu....................................................................................................................... 4–5

Table 4-3. Monitor Menu................................................................................................................................ 4–5

Table 4-4. Faults Menu ................................................................................................................................... 4–6

Table 6-1. M&C LEDs.................................................................................................................................... 6–1

Table 6-2. Test Points ..................................................................................................................................... 6–2

viii Rev. 1

This chapter describes the KST-12025 Ku-band satellite terminal, referred to in this manual as “the KST-12025” (Figure 1-1).

1.1 Description

The KST-12025 is a 25W Ku-band satellite earth station electronics terminal configured in two assemblies:

• The feed assembly consists of a transmit reject filter and a Low Noise Amplifier

(LNA).

Chapter 1.

INTRODUCTION

• The outdoor enclosure assembly (the RFT-1225) consists of a solid state power

amplifier, up and down converters, Monitor and Control (M&C) microprocessor, and power supply.

The KST-12025 meets all requirements for operation on both private and regional domestic Ku-band satellite networks.

Rev. 1 1–1

Introduction KST-12025 Ku-Band Satellite Terminal

Figure 1-1. KST-12025 Ku-Band Satellite Terminal

Note:

The LNAs shown in Figure 1-1 and Figure 1-2 are typical LNAs. Other LNAs are

available, and can be ordered from an EFData marketing representative.

1–2 Rev. 1

KST-12025 Ku-Band Satellite Terminal Introduction

Side View

Top View

Figure 1-2. Redundant LNA Plate

Figure 1-3. KST-12025 Terminal Block Diagram

Rev. 1 1–3

Introduction KST-12025 Ku-Band Satellite Terminal

1.1.1 Applications

When used in conjunction with EFData modems, the KST-12025 terminal is ideal for:

• Single digit carriers

• Multiple carrier operation over a 36 MHz bandwidth

Because the terminal 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 terminal.

When used with a high-gain antenna, the KST-12025 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-12025. 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-12025 components.

The terminal can be initially configured by a keyboard/LCD controller within the enclosure, or by 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 monitor and control computer, the serial port can be set to RS-485 for bus operation.

For more information on the M&C board, refer to Chapter 5.

1–4 Rev. 1

KST-12025 Ku-Band Satellite Terminal Introduction

1.1.3 LNA Assembly

The LNA assembly consists of a wave guide transmit reject filter and an LNA.

The transmit reject filter 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 outdoor unit (the RFT-1225) 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-1225 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 level is 25W, and is temperature-compensated for maximum stability.

The up and down converters are dual conversion, with individual synthesizers for independent transmit and receive transponder selection.

The microprocessor provides:

• Online loop monitoring

• Dynamic control functions

• Configuration control

• Fault/status monitoring

• Serial computer/terminal interface

Rev. 1 1–5

Introduction KST-12025 Ku-Band Satellite Terminal

1.2 Options

1.2.1 Configurations

The KST-12025 can be ordered with various configurations, including:

• Output power levels

• Input power (AC/DC)

• Step sizes

• Synthesizers

• LNA gain

• Redundant LNA mounting plates

• Custom logos

Contact an EFData marketing representative for more information.

1.2.2 Equipment

The following items are available:

• KP-10 hand-held keypad. The KP-10 provides portable, external access for controlling the RFT. For more information, refer to the EFData KP-10 External Keypad Installation and Operation Manual.

• Front panel display/keypad. The optional front panel provides the local user interface, which can be used to configure and monitor the status of the terminal. For more information, refer to Chapter 4.

• High-performance low-noise amplifiers (LNAs).

Contact an EFData marketing representative for more information.

1–6 Rev. 1

KST-12025 Ku-Band Satellite Terminal Introduction

1.3 Specifications

Table 1-1. KST-12025 System Specifications

RF Input Connector Type N f e male RF Output Connector WR-75G TX Band 14.0 to 14.5 GHz RX Band 10.95 to 12.75 G H z

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 RTN Loss > 19 dB at 70 MHz ± 18 MHz IF In Impedance IF In RTN Loss > 19 dB at 70 MHz ± 18 MHz Prime Power Options 90 to 230 VAC, 47 to 63 Hz, using a 6’ cable North American

Power Consumption:

25W RF Output 800W AC or DC Input

Physical:

Size (RFT-1225) Weight

Environmental:

Temperature

Thermal Gradient

Humidity

Precipitation Salt Fog Sand and Dust Altitude Solar Radiation Safety Emissions ES Discharge

Ω

3-prong plug, or 48 VDC (40 to 60V)

26.5” H x 12.7” W x 9.3” D ( re fer to Figure 1-6)

49 lbs. maximum

-40° to +55°C opera ting

-50° to +75°C surv iv a l

40°C/hour 10°C/15 min. 0% to 100% relative at -40° to +55°C 95% at 65°C/72 hr. 810/Method 506.2 810/Method 509.2 810/Method 510.1 0 to 15,000 ft oper, 0 to 50,000 ft. surv. 360 BTU/hr./ft2 at 50°C Capable of UL , CSA, VDE, IEC FCC Part 15, J, Class A 10 kV operation, 15 kV surviva l

Rev. 1 1–7

Introduction KST-12025 Ku-Band Satellite Terminal

Table 1-2. RFT-1225 Specifications

Receiver Specifications

Frequency Ra ng e 10.95 to 12.75 GHz, in 2.5 MHz ste ps

10.95 to 11.7 GHz, in 2.5 MHz ste ps

11.7 to 12.2 GHz, in 2.5 MHz ste ps

12.25 to 12.75 GHz, in 2.5 MHz ste ps

Frequency Range (Optional) 10.95 to 12.75 GHz, in 1.0 MHz ste ps

10.95 to 11.7 GHz, in 1.0 MHz ste ps

11.7 to 12.2 GHz, in 1.0 MHz ste ps

12.25 to 12.75 GHz, in 1.0 MHz ste ps Frequency Sens e No inversion Receiver gain Variable 70 to 95 dB with LNA Frequency Stability

Daily RX Freq Stability Annual RX Freq Stability RX Drift/Temp Gain Flatness ± 1.0 dB/36 MH z

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 tone s a t -86 dB m pin (with LNA ) Group Delay < 20 ns/36 MHz Synth Lock T ime < 1 second RX (2.5 MHz steps) Phase Noise

Optional RX (1.0 MHz steps) Phase Noise

Inband Overdrive N o da mage to 0 dBm Third Order Interce pt +24 dBm minimum 1 dB Output compressi on +17 dBm minimum

± 1 x 10-8 at 23°C ± 1 x 10-8 at 23°C ± 1 x 10-7 at 23°C ± 1 x 10-8 from -40 to +55° C

-60 dBc/Hz at 100 Hz

-70 dBc/Hz at 1 kH z

-75 dBc/Hz at 10 kH z

-80 dBc/Hz at 100 kH z

-60 dBc/Hz at 100 Hz

-66 dBc/Hz at 1 kH z

-75 dBc/Hz at 10 kH z

-80 dBc/Hz at 100 kH z

1–8 Rev. 1

KST-12025 Ku-Band Satellite Terminal Introduction

Transmitter Specifications

Frequency Range 14.0 to 14.5 GHz, in 2.5 MHz ste ps Frequency Range (Optional) 14.0 to 14.5 GHz, in 1.0 MHz ste ps Transmitter power a t 1 dB c om pre ssion point:

25W

Gain at 1 dB com pre s s ion point with customer attenuator at 13 dB:

74 dB gain

Transmitter Power Option:

25W Transmitter linear ga in vs . Customer controlled attentuator setting TX Bandwidth 70 MHz with 1 dB BW of ± 18 MHz Gain flatne ss ± 1 dB/36 MHz Gain variation ± 2 dB max. f or f la tness, te mp., aging TX Freq Stability

Daily TX Freq Stability Annual TX Freq Stability TX Freq Drift/Temp TX Synthesizer L oc k - up time < 1 second

TX Phase Noise (2.5 MHz ste ps ) -60 dBc/H z a t 100 Hz

Optional TX (1.0 MHz steps) Phase Noise

Linear Gain with customer atte nua tor a t 13 dB :

75 dB

0 to 25 dB, factory setting = 13 dB

± 1 x 10-8 at 23°C ± 1 x 10-8 at 23°C ± 1 x 10-7 at 23°C ± 1 x 10-8 from -40 to +55° C

-70 dBc/Hz at 1 kH z

-75 dBc/Hz at 10 kH z

-80 dBc/Hz at 100 kH z

-60 dBc/Hz at 100 Hz

-66 dBc/Hz at 1 kH z

-75 dBc/Hz at 10 kH z

-80 dBc/Hz at 100 kH z

Rev. 1 1–9

Introduction KST-12025 Ku-Band Satellite Terminal

Table 1-3. LNA Specifications

Input VSWR 1.25:1 max. Output VSWR 1.25:1 Gain Flatness: ± 2.0 dB/full band

10.95 to 12.75 GHz ± 1.5 dB/full band ± 0.50 dB/40 MHz

10.95 to 11.7 GHz ± 1.5 dB/full band ± 0.25 dB/40 MHz

11.7 to 12.2 GHz ± 1.5 dB/full band ± 0.25 dB/40 MHz

12.25 to 12.75 GHz ± 1.5 dB/full band ± 0.25 dB/40 MHz

Gain vs. Temperature ± 1.5 dB Max. Operating Temperature -40°C to +60°C 1 dB Gain Comp. Pt.

(optional)

Third Order Intercept Point

(optional)

Group Delay:

Linear Parabolic Ripple

Power Connector P ower through coax RF Input W/G WR-75 cover Input Power +12 to +24 VDC at 100 mA nominal Frequency 10.95 to 12.75 GHz

AM-PM Conversion 0.5°/dB at -5 dBm

+10 dBm +20 dBm optional +8 dBm +20 dBm +18 dBm

0.01 ns/MHz

0.001 ns/MHz

0.1 ns/p-p

10.95 to 11.7 GHz

11.7 to 12.2 GHz

12.25 to 12.75 GHz

1–10 Rev. 1

KST-12025 Ku-Band Satellite Terminal Introduction

Figure 1-4. LNA Dimensions

Rev. 1 1–11

Introduction KST-12025 Ku-Band Satellite Terminal

Figure 1-5. Dimensions for 1:1 Redundant LNA Plate

1–12 Rev. 1

KST-12025 Ku-Band Satellite Terminal Introduction

12.7

Air

Unistrut

Outlet

MTC Plate

19.2

5.25

Air Outlet

Antenna

Side View

Figure 1-6. RFT-1225 Dimensions

23.0

3.50

Waveg uide Output

5.8

Rev. 1 1–13

Introduction KST-12025 Ku-Band Satellite Terminal

This page is intentionally left blank.

1–14 Rev. 1

SINGLE THREAD SYSTEM

This chapter provides installation information for single thread systems, including:

• Unpacking and inspecting the parts

• Installing the RFT

• Installing the LNA and flexible waveguide

• External connections

For redundant systems, refer to Chapter 3.

2.1 Unpacking

Chapter 2.

INSTALLATION

The KST-12025 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:

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

Note:

Save the packing material for reshipment.

Rev. 1 2–1

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

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.

2.2.1 Included Parts

A typical single thread KST-12025 configuration contains the following components.

Notes:

1. Parts are not drawn to scale.

2. Because each system can be custom ordered, it is beyond the scope of this manual to provide the unlimited configuration possibilities.

3. This chapter does not describe the installation procedures for amplifiers, high performance LNAs, phase-locked LNBs, LNBs, and phase-locked block converters.

Qty. Description Qty. Description

1 RFT outdoor unit. 1 Feed assembly.

MODELNO.

SERIALNO.

FREQUENCY

NOISETEMPGAIN

RFINRFOUT

Note:

Pictured is a typical LNA. Other LNAs are available, and can be or der e d from an EFData marketing representativ e .

1 Envelope containing the test data s he e t. 1

KST-12025 Ku-Band Satellite Terminal Installation and Operation Manual

2–2 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

Monitor and Control Software for EFData Satellite Terminals User’s Guide

Rev. 1 2–3

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

1 Kit KT/3954-x (where x = 1 for AC power, and 2 for DC power), which includes:

Qty. Description Qty. Description

Note:

1 Connector kit.

EFData Part # CN/STPG26M01. Used to connect customer’s cable to the RFT 26pin J6 (REMOTE). For remote c ontrol and s tatus monitoring (by using M&C system m onitor software).

1 17’ Heliax cable.

1 Flexible Waveguide.

Either the AC or DC cable is provided,

depending upon the product ordering code.

Assembly, 15’ AC prime power cable.

EFData Part # PL/2754.

Assembly, 15’ DC prime pow er c a ble.

EFData Part # PL/4157.

EFData Part # CA/3722. Used for LNA to down converte r .

1 O-Ring, -024, buna, black.

EFData Part # 32P1037.

10 6-32 x 7/8” socket he a d c a p sc r e w.

EFData Part # HW/6-32X7/8SHCS.

10 6-32 nut.

EFData Part # HW/6-32HEXNUT.

EFData Part # RF/WGFLXWR75-5 Used to connect LNA to antenna.

2 O-Ring, black neoprene.

EFData Part # 32P1039.

20 #6 flat washer .

EFData Part # HW/6-FLT.

10 #6 split lockwasher.

EFData Part # HW/6-SPLIT.

2–4 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

Note:

If an RFT for a spar mount is ordered, EFData will provide a spar mount kit

(KT/4061). Otherwise, the universal installation kit (KT/3576) will be provided.

1 Kit KT/4061, which includes:

Qty. Description Qty. Description

2 Spar support bracket.

EFData Part # FP/3175. Used for spar mount only.

8 1/4-20 x 5/8” bolt.

EFData Part # HW/1/4-20X5/8BT. Used to attach 8” or 14” unistruts to RFT.

8 1/4” flat washer.

4 5/16-18 x 1” bolt.

EFData Part # HW/5/16-18X1BLT. Used to attach spar support bracket to 8” unistrut.

4 5/16” split lockwasher.

EFData Part # HW/5/16-SPLIT. Used to attach spar support bracket to 8” unistrut.

4 5/16” flat washer.

EFData Part # HW/1/4-FLT. Used to attach 8” unistruts to RFT.

8 1/4” split lockwasher.

EFData Part # HW/1/4-SPLIT. Used to attach 8” unistruts to RFT.

2 Unistrut — 8” long.

EFData Part # FP/3481. Attaches directly to RFT.

EFData Part # HW/5/16-FLT. Used to attach spar support bracket to 8” unistrut.

4 5/16-18 spring nut.

EFData Part # HW/5/16-18SPNUT. Used to attach spar support bracket to 8” unistrut.

Rev. 1 2–5

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

1 Kit KT/3576, which includes:

Qty. Description Qty. Description

2 Spar support bracket.

EFData Part # FP/3175. Used for spar mount only.

4 Unistrut — 14” long.

12 5/16-18 x 1” bolt.

EFData Part # HW/5/16-18X1BLT.

24 5/16” split lockwasher.

EFData Part # FP/3595. Used for round and square pole m ount only.

2 Unistrut — 8” long.

EFData Part # FP/3481. Attaches directly to RFT.

8 1/4-20 x 5/8” bolt.

EFData Part # HW/1/4-20X5/8BT. Used to attach 8” unistruts to RFT.

8 1/4” flat washer.

EFData Part # HW/1/4-FLT. Used to attach 8” unistruts to RFT.

8 1/4” split lockwasher.

EFData Part # HW/5/16-SPLIT.

24 5/16” flat washe r.

EFData Part # HW/5/16-FLT.

12 5/16-18 hex nut.

EFData Part # HW/5/16-18HEXNT.

16 5/16-18 spring nut.

EFData Part # HW/5/16-18SPNUT.

8 Flat fitting plate, 5/16”.

EFData Part # HW/1/4-SPLIT. Used to attach 8” unistruts to RFT.

8 Pipe block.

EFData Part # HW/BLK-PIPE2-8. Used for round pole mount only.

2–6 Rev. 1

EFData Part # HW/FIT-PLT-5/16.

4 Threaded rod, 5/16-18 x 14”.

EFData Part # HW/RD5/16-18X14. Used for round and square pole m ount only.

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

2.3 RFT Installation

At the customer’s discretion, the RFT can be installed anywhere on or near the antenna. The supplied hardware allows the installer a wide range of installation alternatives, including:

• Vertical pole (e.g., mast) (either square or round). This is the most typical

installation.

• Within the hub of a large antenna.

• Spar (i.e., square bar) on the antenna structure.

EFData recommends that the RFT be mounted vertically, with the air inlet facing the ground.

Rev. 1 2–7

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

2.3.1 Tools Required

Qty. Description

3/8” drive ratchet.

3” x 3/8” drive ex tens ion.

7/16” x 3/8” drive sock e t.

1/2” x 3/8” drive sock e t.

(Metric equiv alent: 12mm , 6 pt.)

(Metric equiv alent: 13mm , 6 pt.)

1 1/2” combination wrench.

with a 6 pt. box end.)

1 7/64” hex key (allen w re nc h).

1 5/16” combination wrench.

with a 6 pt. box end.)

(Metric equivalent: 13mm combination wrench

(No metric equivalent.)

(Metric equivalent: 8mm combination wrench

2–8 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

2.3.2 Vertical Pole Installation

2.3.2.1 Round Pole

Note:

The following process is for a typical installation. Custom systems may be

ordered, and are beyond the scope of this manual.

To install the RFT to a round vertical pole:

1. Set the unit on its side, with the mounting holes facing up.

2. Install the 8” unistruts as follows:

a. Position an 8” unistrut (with

the open side facing up) over one set of the mounting holes on the RFT.

b. Using four 1/4-20 bolts,

1/4” split lockwashers, and 1/4” flat washers, attach an 8” unistrut to the RFT.

Tighten the bolts firmly.

c. Repeat Steps 2.a. and 2.b.

for the second 8” unistrut.

Rev. 1 2–9

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

3. Install the 14” unistruts as follows:

a. Position a spring nut

between the inner and outer bolts on both sides of each 8” unistrut.

b. Install each spring nut as

follows:

(1) Place the spring nut in

the unistrut channel, spring side down, with its wide side parallel with the unistrut channel.

(2) Press down on the

spring nut to compress the spring, and rotate the nut 90° (i.e., perpendicular to the unistrut).

(3) Release pressure on the

spring nut.

(4) Repeat Steps 3.b.(1)

through 3.b.(3) for each spring nut.

2–10 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

c. Position a 14” unistrut

(open side facing up) over one of the 8” unistruts.

Ensure the 14” unistrut is centered over the RFT.

d. Using two 5/16-18 bolts,

5/16” split lockwashers, and 5/16” flat washers, attach the 14” unistrut to the 8” unistrut.

Note:

The bolts should be installed in the fifth hole from each end, as

illustrated.

Tighten the bolts firmly.

e. Attach the second 14” unistrut to the second 8” unistrut by repeating

Steps 3.a. through 3.d.

Rev. 1 2–11

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

4. Install the pipe blocks as follows:

a. Install two spring nuts in each of four 14” unistruts (the two just mounted on

the RFT, and two additional).

Be sure to position the spring nuts in the unistruts wide enough apart so that when the pipe blocks are installed, they will clear the pole when the unit is lifted into place for installation.

b. Install each spring nut as follows:

(1) Place the spring nut in the unistrut channel, spring side down, with its

wide side parallel with the unistrut channel.

(2) Press down on the spring nut to compress the spring, and rotate the nut

90° (i.e., perpendicular to the unistrut).

(3) Release pressure on the spring nut.

(4) Repeat Steps 4.b.(1) through 4.b.(3) for each spring nut.

c. Using four 5/16-18 bolts, 5/16” split

lockwashers, and 5/16” flat washers, loosely secure the pipe blocks to the spring nuts.

Ensure the pipe blocks are installed with the long angle facing inward, toward the pipe, as illustrated.

DO NOT tighten the pipe block bolts until after mounting the RFT on the vertical pole. (See Step 6.e.)

2–12 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

5. Install the threaded rods as follows:

a. Install two spring nuts in both 14”

unistruts mounted on the RFT.

Note:

Ensure the spring nuts are positioned over the outer holes in the 14” unistruts, as illustrated.

b. To install each spring nut:

(1) Place the spring nut in the

unistrut channel, spring side down, with its wide side parallel with the unistrut channel.

(2) Press down on the spring nut to

compress the spring, and rotate the nut 90° (i.e., perpendicular to the unistrut).

(3) Release pressure on the spring nut.

(4) Repeat Steps 5.b.(1) through 5.b.(3) for each spring nut.

c. Thread a 5/16-20 nut approximately 1-1/2” onto each threaded rod. (This

will ensure that the threaded rods will extend beyond the spring nuts when installed.)

d. Place a 5/16” split lockwasher, 5/16” flat washer, and flat fitting plate over

each threaded rod.

Rev. 1 2–13

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

e. One threaded rod at a time, hold the

washers and plate in place on the rod, and screw the rod into a spring nut, as illustrated.

Notes:

1. Be sure to position the flanges of the flat fitting plates in the grooves of the unistruts.

2. Before tightening the nuts on the threaded rods, ensure that the end of each rod is screwed in until it is flush with the backside of the unistruts. This ensures the rods are threaded completely through the spring nuts.

Tighten each nut firmly.

f. Thread a 5/16-18 nut about 2” onto the

end of each threaded rod.

g. Slip a 5/16” split lockwasher, 5/16” flat

washer, and flat fitting plate (in that order) onto each threaded rod.

2–14 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

6. Mount the RFT as follows:

a. Lift the RFT into position on the vertical pole.

b. Slip a 14” unistrut over each of pair of threaded rods (upper and lower).

Note:

Install the 14” unistruts with the open face toward the pole as

illustrated below.

Rev. 1 2–15

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

c. Install a 5/16” flat washer, 5/16” split lockwasher, and 5/16-18 nut on each

threaded rod.

d. Position the RFT as desired, and tighten the 5/16-18 nuts installed in

Step 6.c.

e. Slide the pipe blocks inward until they contact the vertical pole, then firmly

tighten the 5/16-18 bolts.

2.3.2.2 Square Pole

For square vertical pole installation, follow the steps in Section 2.3.2.1, with the following exceptions:

• Do not perform Step 4.

• Do not perform Step 6.e.

2–16 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

2.3.3 Spar Installation

Note:

The following process is for a typical installation. Custom systems may be

ordered, and are beyond the scope of this manual.

To install the RFT to a spar:

1. Set the unit on its side, with the mounting holes facing up.

2. Install the 8” unistruts as follows:

a. Position an 8” unistrut (with the open

side facing up) over one set of the mounting holes on the RFT.

b. Using four 1/4-20 bolts, 1/4” split

lockwashers, and 1/4” flat washers, attach an 8” unistrut to the RFT.

Tighten the bolts firmly.

c. Repeat Steps 2.a. and 2.b. for the

second 8” unistrut.

Rev. 1 2–17

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

3. Mount the RFT as follows:

a. Position a spring nut between the

inner and outer bolts on both sides of each 8” unistrut, as illustrated.

b. Install each spring nut as follows:

(1) Place the spring nut in the

unistrut channel, spring side down, with its wide side parallel with the unistrut channel.

(2) Press down on the spring nut

to compress the spring, and rotate the nut 90° (i.e., perpendicular to the unistrut).

(3) Release pressure on the

spring nut.

(4) Repeat Steps 3.b.(1) through

3.b.(3) for each spring nut.

c. Lift the RFT into position.

d. Using four 5/16-18 bolts, 5/16”

split lockwashers, and 5/16” flat washers, bolt the two spar support brackets in place.

Tighten the bolts firmly.

2–18 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

2.4 LNA and Flexible Waveguide Installation

Refer to Section 2.2.1 for included parts.

To install a single LNA to an antenna:

1. Remove the protective cover from the antenna mount location (if installed).

2. Remove the plastic cover from the antenna end (RF IN) of the LNA.

3. Remove the plastic cover from the RF OUT end of the LNA.

After removing the protective cover(s), ensure that no foreign material or moisture enters the antenna waveguide or LNA.

CAUTION

4. Install the appropriate O-ring on the antenna end of the LNA:

a. If both components have O-ring grooves, use EFData Part # 32P1039. b. If only one component has an O-ring groove, use EFData Part # 32P1037.

5. Using four 6-32 x 7/8” socket head cap screws, eight #6 flat washers, four #6 split lockwashers, and four 6-32 nuts, attach the LNA to the antenna. Tighten the cap screws firmly.

To install the flexible waveguide:

1. Install the appropriate O-ring between the flexible waveguide and the antenna.

2. Using four 6-32 x 7/8” socket head cap screws, four #6 split lockwashers, eight #6 flat washers, and four 6-32 nuts, attach the flexible waveguide to the antenna. Tighten the cap screws firmly.

3. Install the appropriate O-ring between the flexible waveguide and the waveguide flange on the RFT.

4. Using four 6-32 x 7/8” socket head cap screws, four #6 split lockwashers, eight #6 flat washers, and four 6-32 nuts, attach the flexible waveguide to the waveguide flange on the RFT. Tighten the cap screws firmly.

Rev. 1 2–19

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

2.5 External Connections

Connections between the RFT and other equipment are made through six connectors. These connectors are listed in Table 2-1, and their locations are shown in Figure 2-1.

The use of each connector is described in the following paragraphs.

Table 2-1. Rear Panel Connectors

Name Ref.

Design.

TX/IF IN J1 TNC T X IF INPUT (70 MHz) TX/RF OUT J2 WR-75 G 14.0 to 14.5 GHz OUT RX/IF OUT J3 TNC RX IF OUT (70 MHz) RX/RF IN J4 Type N 10.95 to 12.75 GHz Input PRIME PWR J5 Standard Prime Power Input REMOTE J6 26-pin CIR Remote Interface GND None #10-32 Stud Chassis Ground

TX/RF

Connector

Type

Function

WAVEGUIDE

OUTPUT CPR-137

Figure 2-1. RFT External Connections

2–20 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

2.5.1 TX/IF Input (J1)

The TX/IF input is a TNC type connector that comes from the indoor unit. The input impedance is 50 from -43 to -19 dBm, depending on the customer’s configuration and application.

, and the frequency is 70 MHz ± 18 MHz. The typical power level is

Ω

2.5.2 TX/RF Output (J2)

The TX/RF output is a WR-75 G interface with an output impedance of 50Ω. The output frequency range is 14.0 to 14.5 GHz. The output power level is 25W.

2.5.3 RX/IF Output (J3)

The RX/IF output is a TNC type connector that sends the received signal to the indoor unit. The output impedance is 50

, and the frequency is 70 MHz ± 18 MHz.

Ω

The 1 dB output compression point is +17 dBm.

The level of the signal at the RX/IF output is a factor of input signal level and total system gain.

The system gain is adjustable by the user over a 25 dB range.

The typical system gain includes a 50 dB LNA, making the total typical system gain 70 to 95 dB.

Note:

A 60 dB LNA is only used when there are extremely long cables from the LNA to

the down converter.

2.5.4 RX/RF Input (J4)

The RX/RF input is a type N connector that comes from the LNA. The input impedance is 50

. The connector also has the LNA DC power on the center conductor.

Ω

The input frequency range depends upon receive band options, either:

• Full 10.95 to 12.75 GHz band

• Individual sub-band:

! 10.95 to 11.7 GHz ! 11.7 to 12.2 GHz ! 12.25 to 12.75 GHz

Rev. 1 2–21

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

2.5.5 Prime Power (J5)

The AC power is supplied to the RFT by a 3-pin power connector. Normal input voltage is 90 to 232 VAC, 47 to 63 Hz. The AC pinout is as follows:

Pin # Name Function Wire Color

AHILine Brown B LO Neutral Blue C GND Ground Green/yellow

Maximum power consumption is 800W for the RFT-1225.

A circular 4-pin power connector is used for the DC (48 VDC) option. The pinout is as follows:

Pin # Nam e

A+ INPUT B GROUND C- INPUT DNC

2.5.6 Serial Remote Control (J6)

The remote connector on the RFT is used to interface the M&C functions to a remote location. This interface can be either EIA-232-C or EIA-485.

When using an EIA-485 interface, the transmit and receive signals are able to accommodate either type of remote equipment pinouts. As long as the polarities of the remote equipment TX and RX signals are correct, this remote interface will be completely compatible.

Refer to Table 2-2 for a list of pinouts for the J6 connector.

For standard EIA-232-C or EIA-485 applications, an adapter cable must be used to connect the 26-pin connector (J6) to a standard 9-pin D.

Refer to Figure 2-1 for an illustration of the adapter cable with its pinouts.

2–22 Rev. 1

KST-12025 Ku-Band Satellite Terminal Single Thread System Installation

Table 2-2. RFT-1225 Remote Control Connector, J6

Pin Name Description

EIA-232-C EIA-485

A GND -RX/TX RX/TX Data B -RX/TX RX/TX Data C +RX/TX RX/TX Data D CTS +RX/TX Clear to Send E RD/RX Receive Data F RTS Ready to Send G TD/TX Transmit Data H DSR Data Set Ready

J GN D Ground K LNA Power Output, 10V f or powering LNA L EXT_PWR Output voltage, 11V, to power EIAU -503L and KP-10

M EXT TWT FLT Input, logic 0 or 5V, 5V = FLT , 0V = nor mal

N EXT IN _2 Input, logic 0 or 5V, spare PSPARE N/C R GRD Ground SSPARE N/C T ALOG TST Analog test voltage output U UL_NC Uplink fault relay, c onne cts to uplink COM with fault V UL_COM Uplink fault relay, COMMON

W UL_NO Uplink fa ult re lay, opens with fault

X DL_NC Downlink fault relay, connects to downlink COM w ith f a ult Y DL_COM Downlink fault relay, COMMON Z DL_NO Downlink fault relay , ope ns with fault

a L NA PWR RTN Return for LNA Power

bSPARE

cSPARE

(see Note 1 below)

(see Note 2 below)

(see Note 3 below) (see Note 3 below)

(see Note 2 below)

Notes:

1. In EIA-232-C mode, CTS is tied to RTS (and vice versa).

2. LNA can be powered from these pinouts instead of up through the RF cable.

3. 5V is a floating level.

Rev. 1 2–23

Single Thread System Installation KST-12025 Ku-Band Satellite Terminal

EFDATA:CN/STPG26M

PT06E16-26P(SR)

D E F G H

GND

CTS RD/R RTS TD/T D

5 9 4 8 3 7 2 6 1

2.5.7 GND

26 PIN

EFDATA: C N/STPG 26 M0 1 PT06E1 6-26P(SR)

A B C D

Figure 2-2. Serial Adapter Cables

EIA-232 ADAPTER CABLE

-RX /T X

-RX /T X +RX/TX +RX/TX

GND

EIA-485 ADAPTER CABLE

MALE

5 9 4 8 3 7 2 6 1

MALE

A #10-32 stud is available on the rear for the purpose of connecting a common chassis ground between all of the equipment.

2–24 Rev. 1

Chapter 3.

REDUNDANT SYSTEM

INSTALLATION

This chapter provides installation information for redundant systems, including:

• Unpacking and inspecting the parts

• Installing the RFTs

• Installing the 1:1 redundant plate

• Installing the waveguide switch

• External connections

For RSU-503L installation information, refer to the EFData RSU-503 Redundancy Switch Unit Installation and Operation Manual.

For single thread systems, refer to Chapter 2.

If the RFTs are to be mounted individually, refer to Chapter 2 for installation information.

Rev. 1 3–1

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

3.1 Unpacking

The KST-12025 redundant system is shipped in two cartons (one RFT each) and one crate.

To remove the parts:

1. Cut the tape at the top of each carton where it is indicated OPEN THIS END.

2. Lift out the cardboard/foam spacer covering the units.

3. Remove the parts from the cartons. Refer to Section 3.2.1 for a parts breakdown.

Because the RFTs are heavy, assistance may be necessary to remove the units from the boxes.

CAUTION

4. Remove the screws from the lid of the wooden crate, and remove the lid.

5. Unbolt the redundant LNA plate and remove it from the crate.

6. Remove the remainder of the parts from the crate. Refer to Section 3.2.1 for a parts breakdown.

Note:

Save the packing material for reshipment.

3.2 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.

3–2 Rev. 1

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

3.2.1 Included Parts

A typical redundant KST-12025 configuration contains the following components.

Notes:

1. Parts are not drawn to scale.

2. Because each system can be custom ordered, it is beyond the scope of this manual to provide the unlimited configuration possibilities.

3. This chapter does not describe the installation procedures for amplifiers, high performance LNAs, phase-locked LNBs, LNBs, and phase-locked block converters.

Qty. Description Qty. Description

2 RFT outdoor unit. 1 Redundant LNA plate.

Note:

Pictured is a typical LNA. Other LNAs are available, and can be or der e d from an EFData marketing representativ e .

1 RSU-503L. 1 KST-12025 Ku-Band Satellite Terminal

Installation and Operation Manual.

1 Envelope containing the test data s he e t. 1 RSU-503 Redundancy Switch Unit Installation and

Operation Manual.

1 Monitor and Control Software for EFData

Satellite Terminals User’s Guide.

Rev. 1 3–3

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

1 Kit KT/3950-x (where x = 1 for AC power, and 2 for DC power), which includes:

Qty. Description Qty. Description

Note:

1 Connector kit.

EFData Part # CN/STPG26M01. Used to connect customer’s cable to the RFT 26pin J6 (REMOTE). For remote c ontrol and s tatus monitoring (by using M&C system m onitor software).

1 12’ Cable assembly.

2 4’ Cable assembly.

Either the AC or DC cable is provided,

depending upon the product ordering code.

Assembly, 15’ AC prime power cable.

EFData Part # PL/2754.

Assembly, 15’ DC prime pow er c a ble.

EFData Part # PL/4157.

EFData Part # CA/3951. “Y” to waveguide switches.

4 4’ Cable assembly.

EFData Part # CA/3005-1. TNC to TNC, 50Ω.

1 Weldment.

EFData Part # FP/4427. Used to attach switch to antenna feed.

EFData Part # PL/3003. Used for communications from RFTs A and B to RSU.

2 12’ Cable.

EFData Part # CA/3722. LNA to down converter.

1 Termination.

EFData Part # RF/TERM-11923-2. Used on port 3 of the switch.

3–4 Rev. 1

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

Kit KT/3950-x (Continued):

Qty. Description Qty. Description

4 O-Ring, -024, BUNA, black.

4 O-Ring, black neoprene.

EFData Part # 32P1037.

2 Flexible waveguide.

EFData Part # RF/WGFLXWR75-5. Used to attach RFTs to switch.

10 6-32 x 1/2” socket head cap screw.

EFData Part # HW/6-32X1/2SHCS.

20 6-32 x 7/8” socket head cap screw.

EFData Part # 32P1039.

1 Switch.

EFData Part # SW/WGS+28V-75SB. Used to switch between RFT outputs.

50 #6 flat washer .

EFData Part # HW/6-FLT.

20 6-32 hex nut.

EFData Part # HW/6-32X7/8SHCS.

30 #6 split lockwasher.

EFData Part # HW/6-SPLIT.

Rev. 1 3–5

EFData Part # HW/6-32HEXNUT.

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

2 Kit KT/3577, which includes:

Qty. Description Qty. Description

3 Spar support bracket.

42 5/16” flat washe r.

EFData Part # FP/3175. Used for spar mount only.

10 Unistrut — 14” long.

EFData Part # FP/3595. Used for round and square pole m ount only.

18 5/16-18 hex nut.

EFData Part # HW/5/16-18HEXNT.

30 5/16-18 spring nut.

EFData Part # HW/5/16-18SPNUT.

28 5/16-18 x 1” bolt.

EFData Part # HW/5/16-18X1BLT.

2 Unistrut, modified, 20” long.

EFData Part # HW/5/16-FLT.

42 5/16” split lockwasher.

EFData Part # HW/5/16-SPLIT.

12 Pipe block.

EFData Part # HW/BLK-PIPE2-8. Used for round pole mount only.

12 Flat fitting plate, 5/16”.

EFData Part # HW/FIT-PLT-5/16.

6 Threaded rod, 5/16-18 x 14”.

EFData Part # HW/RD5/16-18X14. Used for round and square pole m ount only.

4 Unitstrut — 8” long.

EFData Part #FP/3482. Used for round and square pole m ount only.

19 1/4-20 x 5/8” bolt.

EFData Part # HW/1/4-20X5/8BT. Used to attach short unistruts to RFTs.

19 1/4” split lockwasher.

EFData Part # HW/1/4-SPLIT. Used to attach short unistruts to RFT.

3–6 Rev. 1

EFData Part # FP/3481. Attaches directly to RFTs.

19 1/4” flat washe r.

EFData Part # HW/1/4-FLT. Used to attach short unistruts to RFT.

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

3.3 RFT Installation

At the customer’s discretion, the RFTs can be installed anywhere on or near the antenna. The supplied hardware allows the installer a wide range of installation alternatives, including:

• Vertical pole (e.g., mast) (either square or round). This is the most typical

installation.

• Within the hub of a large antenna.

• Spar (i.e., rectangular bar) on the antenna structure.

EFData recommends that the RFTs be mounted vertically, with the air inlets facing the ground.

Rev. 1 3–7

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

3.3.1 Tools Required

Qty. Description

3/8” drive ratchet.

3” x 3/8” drive ex tens ion.

7/16” x 3/8” drive sock e t. (Metric equivalent: 12m m , 6 pt.)

1/2” x 3/8” drive sock e t. ( Metric equivalent: 13mm , 6 pt.)

1 1/2” combination wrench. (Metric equivalent: 13mm combination wrench

with a 6 pt. box end.)

1 7/64” hex key (allen w re nc h). (No metric equivalent.)

1 5/16” combination wrench. (Metric equivalent: 8mm combination wrench

with a 6 pt. box end.)

3–8 Rev. 1

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

3.3.2 Vertical Pole Installation

3.3.2.1 Round Pole

The following process is for a typical installation. Custom systems may be ordered, and are beyond the scope of this manual.

To install the RFTs to a round vertical pole:

1. Set the units on their sides, with the mounting holes facing up.

2. Install the 8” unistruts as follows:

a. Position an 8” unistrut (with

the open side facing up) over one set of the mounting holes on the RFT.

b. Using four 1/4-20 bolts, 1/4”

split lockwashers, and 1/4” flat washers, attach an 8” unistrut to the RFT.

Tighten the bolts firmly.

c. Repeat Steps 2.a. and 2.b. for

each of the remaining 8” unistruts (for a total of four).

Rev. 1 3–9

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

3. Install the 20” unistruts as follows:

Note:

The placement of the pipe blocks may interfere with the inner or center unistrut attaching bolts. Be sure to determine the pipe block placement locations before bolting the 20” unistruts in place. It may be necessary to eliminate the center or inner 20” unistrut mounting spring nuts and bolts.

a. Insert a spring nut between

the unistrut mounting bolts on both RFTs, as illustrated.

b. To install each spring nut:

(1) Place the spring nut in

the unistrut channel, spring side down, with its wide side parallel with the unistrut channel.

(2) Press down on the

spring nut to compress the spring, and rotate the nut 90° (i.e., perpendicular to the unistrut).

(3) Release pressure on the spring nut.

(4) Repeat Steps 3.b.(1) through 3.b.(3) for each spring nut.

3–10 Rev. 1

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

c. With the RFTs side by side,

position a 20” unistrut (open side facing up) in place over one pair of 8” unistruts.

Ensure the long unistrut is

centered over the RFT.

d. Using two or three 5/16-18

bolts, 5/16” split lockwashers, and 5/16” flat washers, attach the 20” unistrut to the 8” unistruts.

Tighten the bolts firmly.

e. Attach the second 20” unistrut to the second set of 8” unistruts by repeating

Steps 3.a. through 3.d.

4. Install the pipe blocks as follows:

a. Install two spring nuts in each of the two 20” long unistruts and two 14” long

unistruts (centered in the unistruts, and wide enough apart so the pipe blocks will clear the pole when the unit is installed).

b. Install each spring nut as follows:

(1) Place the spring nut in the unistrut channel, spring side down, with its

wide side parallel with the unistrut channel.

(2) Press down on the spring nut to compress the spring, and rotate the nut

90° (i.e., perpendicular to the unistrut).

(3) Release pressure on the spring nut.

(4) Repeat Steps 4.b.(1) through 4.b.(3) for each spring nut.

Rev. 1 3–11

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

c. Using eight 5/16-18 bolts, 5/16” split lockwashers, and 5/16” flat washers,

loosely secure the pipe blocks to the spring nuts.

Ensure the pipe blocks are installed with the long angle face inward, toward the pipe, as illustrated.

DO NOT tighten the pipe block bolts until after mounting the RFTs on the vertical pole. (See Step 6.e.)

5. Install the threaded rods as follows:

a. Install two spring nuts in both

20” unistruts mounted on the RFT.

b. Install each spring nut as

follows:

(1) Place the spring nut in

the unistrut channel, spring side down, with its wide side parallel with the unistrut channel.

(2) Press down on the spring

nut to compress the spring, and rotate the nut 90° (i.e., perpendicular to the unistrut).

3–12 Rev. 1

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

(3) Release pressure on the spring nut.

(4) Repeat Steps 5.b.(1) through 5.b.(3) for each spring nut.

c. Thread a 5/16-20 nut approximately 1-1/2” onto each threaded rod. (This

will ensure that the threaded rods will extend beyond the spring nuts when installed.)

d. Place a 5/16” split lockwasher, 5/16” flat washer, and flat fitting plate over

each threaded rod.

e. One threaded rod at a time,

hold the washers and plate in place on the threaded rod and screw it into a spring nut, as illustrated.

Notes:

1. Be sure to position the flanges of the flat fitting plates in the grooves of the unistruts.

2. Before tightening the nuts on the threaded rods, ensure that the end of each rod is screwed in until it contacts the unistrut. This ensures the rods are threaded completely through the spring nuts.

Tighten each nut firmly.

f. Thread a 5/16-18 nut about 2”

onto the end of each threaded rod.

g. Slip a 5/16” split lockwasher,

5/16” flat washer, and flat fitting plate (in that order) onto each threaded rod.

Rev. 1 3–13

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

6. Mount the RFTs as follows:

a. Lift the RFT into position on

the vertical pole.

b. Slip a 14” unistrut over each

of pair of threaded rods (upper and lower).

Note:

Install the 14” unistruts with the open face toward the pole, as illustrated.

c. Install a 5/16” flat washer,

5/16” split lockwasher, and 5/16-18 nut on each threaded rod.

d. Position the RFT, as desired,

and tighten the 5/16-18 nuts installed in Step 6.c.

e. Slide the pipe blocks in until

they contact the vertical pole.

Then, firmly tighten the 5/16-18 bolts.

3.3.2.2 Square Pole

For square vertical pole installation, follow the steps in Section 3.3.2.1, with the following exceptions:

• Do not perform Step 4.

• Do not perform Step 6.e.

3–14 Rev. 1

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

3.3.3 Spar Installation

Note:

The following process is for a typical installation. Custom kits may be ordered and

are beyond the scope of this manual.

To install the RFTs to a spar:

1. Set the units on their side, with the mounting holes facing up.

2. Install the 8” unistruts as follows:

a. Position an 8” unistrut (with the open

side facing up) over one set of the mounting holes on the RFT.

b. Using four 1/4-20 bolts, 1/4” split

lockwashers, and 1/4” flat washers, attach an 8” unistrut to the RFT.

Tighten the bolts firmly.

c. Repeat Steps 2.a. and 2.b. for the

remaining 8” unistruts (for a total of four).

Rev. 1 3–15

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

3. Install the 20” unistruts as follows:

a. Position a spring nut between the 1/4-20 bolts in each 8” unistrut, as

illustrated below:

b. Install each spring nut as follows:

(1) Place the spring nut in the unistrut channel, spring side down, with its

wide side parallel with the unistrut channel.

(2) Press down on the spring nut to compress the spring, and rotate the nut

90° (i.e., perpendicular to the unistrut).

(3) Release pressure on the spring nut.

(4) Repeat Steps 3.b.(1) through 3.b.(3) for each spring nut.

c. With the RFTs side by side, position a 20” unistrut in place over one pair of

8” unistruts (open side up).

d. Using four 5/16-18 bolts, 5/16” split lockwashers, and 5/16” flat washers,

bolt the 20” unistrut to the 8” unistruts.

e. Tighten the bolts firmly.

f. Repeat Steps 3.c. through 3.e. for the second 20” unistrut.

3–16 Rev. 1

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

4. Mount the RFT as follows:

a. Lift the RFT into position.

b. Using four 5/16-18 bolts, 5/16”

split lockwashers, and 5/16” flat washers, bolt the two spar support brackets in place.

Tighten the bolts firmly.

Rev. 1 3–17

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

3.3.4 1:1 Redundant Plate Installation

The 1:1 redundant plate is shown in Figure 3-1. Refer to Section 3.2.1 for included parts.

Top View

Side View

Figure 3-1. 1:1 Redundant LNA Plate

To install the 1:1 redundant plate:

1. Mount the 1:1 redundant plate to the antenna.

Note:

The type of mounting is determined by the brand of antenna on which the

equipment will be installed.

2. Remove the plastic cover from the RF IN connector of the redundant plate.

After removing the protective cover, ensure that no foreign material or moisture enters the 1:1 redundant plate’s waveguide.

CAUTION

3. Install the appropriate O-ring on the RF IN connector of the redundant plate:

a. If both components have O-ring grooves, use EFData Part # 32P1039. b. If only one component has an O-ring groove, use EFData Part # 32P1037.

3–18 Rev. 1

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

4. Using four 6-32 x 7/8” socket head cap screws, eight #6 flat washers, four #6 split lockwashers, and four 6-32 nuts, attach the LNA to the antenna waveguide. Tighten the cap screws firmly.

3.3.5 Waveguide Switch Installation

The following process is for a typical installation. Custom systems may be ordered, and are beyond the scope of this manual.

An installed waveguide switch is shown in Figure 3-2. Refer to Section 3.2.1 for included parts.

Figure 3-2. Installed Waveguide Switch

Rev. 1 3–19

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

To install the waveguide switch:

1. Install the appropriate O-ring between the weldment and port 1 of the waveguide switch.

a. If both components have O-ring grooves, use EFData Part # 32P1039. b. If only one component has an O-ring groove, use EFData Part # 32P1037.

2. Using four 6-32 x 1/2” socket head cap screws, #6 split lockwashers, and #6 flat washers, attach the weldment to port 1 of the waveguide switch. Tighten the cap screws firmly.

3. Install the appropriate O-ring between the antenna and the weldment.

4. Using four 6-32 x 7/8” socket head cap screws, eight #6 flat washers, four #6 split lockwashers, and four 6-32 nuts, attach the weldment to the antenna. Tighten the cap screws firmly.

5. Install the appropriate O-ring between port 3 of the waveguide switch and the termination.

6. Using four 6-32 x 1/2” socket head cap screws, #6 split lockwashers, and #6 flat washers, attach the termination to port 3 of the waveguide switch. Tighten the cap screws firmly.

7. Install the appropriate O-ring between port 2 of the waveguide switch and a section of the flexible waveguide.

8. Using four 6-32 x 1/2” socket head cap screws, #6 split lockwashers, and #6 flat washers, attach the flexible waveguide to port 2 of the waveguide switch. Tighten the cap screws firmly.

9. Install the appropriate O-ring between port 4 of the waveguide switch and the second flexible waveguide.

10. Using four 6-32 x 1/2” socket head cap screws, #6 split lockwashers, and #6 flat washers, attach the flexible waveguide to port 4 of the waveguide switch. Tighten the cap screws firmly.

11. Install the appropriate O-ring between the flexible waveguide attached to port 2 of the waveguide switch and the waveguide flange on the RFT “A.”

12. Using four 6-32 x 7/8” socket head cap screws, four #6 split lockwashers, eight #6 flat washers, and four 6-32 nuts, attach the flexible waveguide (attached to port 2 of the waveguide switch) to the waveguide flange on the RFT “A.” Tighten the cap screws firmly.

3–20 Rev. 1

KST-12025 Ku-Band Satellite Terminal Redundant System Installation

13. Install the appropriate O-ring between the flexible waveguide attached to port 4 of the waveguide switch and the waveguide flange on the RFT “B.”

14. Using four 6-32 x 7/8” socket head cap screws, four #6 split lockwashers, eight #6 flat washers, and four 6-32 nuts, attach the flexible waveguide (attached to port 4 of the waveguide switch) to the waveguide flange on the RFT “B.” Tighten the cap screws firmly.

3.4 RSU-503L Installation

Refer to the EFData RSU-503 Redundancy Switch Unit Installation and Operation Manual.

3.5 External Connections

Refer to Section 2.5 for external connections information.

Rev. 1 3–21

Redundant System Installation KST-12025 Ku-Band Satellite Terminal

This page is intentionally left blank.

3–22 Rev. 1

This chapter provides the following information:

• System operation

• Remote control

• Front panel display/keypad operation

4.1 System Operation

There are three methods of operating the RFT-1225:

• Connect a PC running DOS to the EIA-232-C/485 remote control port, and run

the M&C system monitor software. This software is DOS-based and provides an interface to the remote commands.

Chapter 4.

OPERATION

For information on the remote commands, refer to Appendix A.

For more information on the M&C system monitor program, refer to the EFData Monitor and Control Software for EFData Satellite Terminals User’s Guide.

• Connect the optional KP-10 hand-held keypad. For more information, refer to

the EFData KP-10 External Keypad Installation and Operation Manual.

• Use the optional front panel display/keypad (refer to Section 4.3).

Rev. 1 4–1

Operation KST-12025 Ku-Band Satellite Terminal

4.2 Remote Control

Refer to Appendix A.

4.3 Front Panel Display/Keypad

The optional front panel display (Figure 4-1) provides the local user interface, which is necessary to configure and monitor status of the satellite terminal.

Figure 4-1. RFT-1225 Terminal Keypad

The front panel diplay features a 16-character, 2-line LCD display, and a 6-key keypad which provides for sophisticated functions, yet is easy to use. All functions are accessible at the front panel by entering one of three predefined “SELECT” categories or levels:

• Configuration (CONFIG)

Monitor

•

• Faults

4–2 Rev. 1

KST-12025 Ku-Band Satellite Terminal Operation

4.3.1 Front Panel Controls

The terminal is locally operated by using the front panel keypad. The keypad consists of six keys. Each key has its own logical function or functions.

Key Description

[ENTER] This key is used to select a displayed function or to execute a change to the terminal’s

configuration.

[CLEAR] This key is us e d for backing out of a s e le c tion or to c a nce l a c onfiguration change which

has not been executed us ing [ENTER]. Pressing [CLEAR] ge ne ra lly returns the display to the previous selection.

[←] and [→]

[↑] and [↓]

The RFT-1225 responds by beeping whenever a key is pressed:

These keys are used to move to the next selection, or to move the cursor for certain functions. These keys are used primarily to change configuration data (numbers), but are also used at times to mov e from one section to a nother .

• A single beep indicates that the key pressed was a valid entry, and that the

appropriate action was taken.

• A double beep indicates the key pressed was an invalid entry.

The terminal front panel control uses a tree-structured menu system (Table 4-1 through Table 4-4) to access and execute all functions. The base level of this structure is the sign-on message, which is displayed at the front panel upon terminal power-up.

• Line 1 of the sign-on message displays the terminal model number.

• Line 2 displays the version number of the firmware implemented in the terminal.

The main level of the menu system is the SELECT menu, which may be accessed from the base level by pressing any of the arrow keys. From the SELECT menu, any one of three functional categories may be selected:

Configuration functions

•

Monitor functions Fault functions

•

Press [

←] or [→] to move from one selection to another.

When the desired function is displayed on line 2, that level can be entered by pressing [ENTER]. Once the functional level has been entered, move to the desired function by pressing [

←] or [→].

Rev. 1 4–3

Operation KST-12025 Ku-Band Satellite Terminal

Table 4-1. Main Menu

Screen Unit Type Comments

RFT-1225 SW_x.xx

Screen Submenus/Options Comments

SELECT CONFIG

SELECT MONITOR

SELECT FAULTS

RFT-1225 Firmware FW/3786-xx, Version x.xx

SELECT RF OUTPT U/C FREQ D/C FREQ U/C ATTN D/C ATTN PROGRAM BAUD ADDRESS PARITY LNA PWR LNA FLT CALIB. REF ADJ XFLT ENABLE RSW MODE LOCKMODE U/C TEMP D/C TEMP HPA TEMP USV UVV DCV DVV TIV RESTART UPLINK DOWNLINK 5V PWR 12V PWR HPA LNA U/C LOCK USV TUN UVV TUN D/C LOCK DCV TUN DVV TUN IF LOCK IF TUN

This is an information screen only.

-1 version (2.5 MHz step si ze):

•

Firmware number: FW/3786-1A

Software version: 1.01

-2 version (1.0 MHz step si ze):

•

Firmware number: FW/3786-2A

Software version: 2.01

Go to T a ble 4-2.

Go to T a ble 4-3

Go to T a ble 4-4

Note:

Explanations of the menu windows are located in Section 4.3.2.

4–4 Rev. 1

KST-12025 Ku-Band Satellite Terminal Operation

Table 4-2. Configuration Menu

Screen Submenus/Options Comments

SELECT 1, 2, 3, or NONE RF OUTPUT ON

WRM OFF

U/C FREQ 14.0 to 14.5 GHz In 2.5 MHz steps (1.0 MHz

steps for the -2 version).

D/C FREQ 11.7 to 12.2 GHz In 2.5 MHz steps (1.0 MHz

steps for the -2 version). U/C ATTN 0 to 25 dB D/C ATTN 0 to 31 dB PROGRAM 1, 2, or 3 Program or clear. BAUD 300 to 9600 bit/s ADDRESS 0 to 255 PARITY EVEN

ODD

LNA PWR ON

OFF

LNA FLT ENABLE ON

OFF CALIB. Press [ENTER] to calibrate. REF ADJ 0 to 255 Adjust 10.000 MH z . XFLT ENABLE ON

OFF RSW MODE INDEP

DEP LOCKMODE LOCK

ENABLE

On coax cable. Not on coax cable. Monitor LNA. Ignore LNA.

Monitor external fault. Ignore external fault. Independent. Dependent.

Table 4-3. Monitor Menu

Screen Submenus/Options Comments

U/C TEMP D/C TEMP HPA TEMP USV 2 to 10V U/C Tuning v olta g e . UVV 0 to 10V U/C SYN Tuning v oltag e . DCV 0 to 20V D/C Tuning voltage. DVV 2 to 10V D/C SYN Tuning v oltag e . TIV 2 to 10V IFLO Tuning v olta g e .

Rev. 1 4–5

-40 to +50°C

Temperature of U/C. Temperature of D/C. Temperature of HPA.

Operation KST-12025 Ku-Band Satellite Terminal

Table 4-4. Faults Menu

Screen Submenus/Options

RESTART OK

FAULTED

UPLINK OK

FAULTED

DOWNLINK OK

FAULTED

5V PWR OK

FAULTED

12V PWR OK

FAULTED

HPA OK

FAULTED

LNA OK

FAULTED

U/C LOCK OK

FAULTED

USV TUN OK

FAULTED

UVV TUN OK

FAULTED

D/C LOCK OK

FAULTED

DCV TUN OK

FAULTED

DVV TUN OK

FAULTED

IF LOCK OK

FAULTED

IF TUN OK

FAULTED

4–6 Rev. 1

KST-12025 Ku-Band Satellite Terminal Operation

4.3.2 Menu Explanations

The following paragraphs explain the various menus/options outlined in Table 4-1 through Table 4-4.

4.3.2.1 Configuration

Terminal configuration may be viewed or changed by entering the CONFIG level from the SELECT menu on the front panel (Table 4-2).

Enter the selected configuration menu by pressing [ENTER]. Press [

] or [→] to view

←

the selected configuration parameters. To change a configuration parameter, press [ENTER] to begin the change process, at which point the arrow keys can be used to make the changes.

After the changes are made and the display represents the correct parameters, execute the change by pressing [ENTER]. When [ENTER] is pressed, the necessary programming is initiated by the RFT-1225.

To undo a parameter change prior to executing it, simply press [CLEAR].

The following notes describe each configuration function in detail.

Function Description

SELECT Selects any one of the three “preset” configurations. The user must first

program (store ) c onfiguration param e te r s in the PROGRAM menu.

On entry, the current Select para meter will appear in the menu. Press [↑] or [↓] to select 1, 2, 3, or None. Press [ENTER] to execute the change. If no parameters ha v e be e n se le c te d in the PROGRAM menu, default configurations will be loaded.

RF OUTPUT Programs the RF output to ON, W R M, or O FF.

On entry, the current st at us of the output is displayed. Us e the Arrow keys to select ON, WRM, or OFF. Press [ENTER] to execute the change.

U/C FREQ Programs the up converter f r e que ncy in 2.5 MHz steps.

On entry, the current up c onv e r ter frequency is displa yed with the fla s hing cursor on the first character. Press [←] or [→] to move the flashing cursor. Press [↑] or [↓] to increment or decrement the digit at the flashing cursor. Press [ENTER] to execute the change.

Note: The freque ncy is program mable within the spec ified range in 2.5 MHz steps. When the transmitter freque ncy is changed, the transmitter is automatically turne d off to prevent the poss ible swamping of othe r c hanne ls . To turn the transmitter ON, use the RF_OUTPT function.

Rev. 1 4–7

Operation KST-12025 Ku-Band Satellite Terminal

DC FREQ Programs the down converter fr e que nc y in 2.5 MHz steps.

On entry, the current down converter f re que nc y is displayed with the flashing cursor on the first character. Press [←] or [→] to move the flashing cursor. Press [↑] or [↓] to increment or decrement the digit at the flashing cursor. Press [ENTER] to execute the change.

U/C ATTN Programs the up c onv e rte r output power attenuation from 0 to 25 dB, in 0.5

dB steps.

On entry, the current up c onv e rte r a tte nua tion is displa yed with the fla shing cursor on the first character. Press [↑] or [↓] to increase or decrease the output power attenuation in 0.5 dBm steps. Press [ENTER] to execute the change.

D/C ATTN Programs the down converter input pow e r a tte nua tion from 0 to 31 dB, in 0.5

dB steps.

On entry, the current down converter attenua tion is dis played with the fla s hing cursor on the first character. Press [↑] or [↓] to increase or decrease the output power attenuation in 0.5 dBm steps. Press [ENTER] to execute the change.

PROGRAM Programs or clears the c urrent frequency and attenua tor se tting s a s one of three

“preset” selections.

On entry, 1*, 2*, or 3* will appear in the window. Press [←] or [→] to mov e the cursor from left to right. When the flashing cursor is on any of the “*”s, press [↑] or [↓] to turn the “*” ON or OFF. When the “*” is ON, press [ENTER] to clear stored parameters in the preset location to the left of the “*”. When the “*” is OFF, press [ENTER] to store the current frequency and attenuation parameters in the pre s et loc a tion a t the cursor. To recall any of the present selections, use the SELECT menu, and s ele c t 1, 2, or 3. Press [ENTER].

BAUD Programs the baud rate of the terminal.

On entry, the currently sele c te d baud ra te of the terminal will be displa yed with the flashing cursor on the first digit on the second line of the display. To change the baud rate , pre s s [↑] or [↓] to select a baud rate from 300 to 9600 bit/s. Press [ENTER] to execute the changes.

ADDRESS Programs the termina l remote address.

On entry, the currently sele cte d addre ss of the terminal is display ed with the flashing cursor on the first character. Press [↑] or [↓] to select the desired address of the terminal from 1 to 255. Pres s [ENT ER ] to ex e cute the c hang e .

PARITY Program s the pa rity bit to Even (the def a ult), O dd, or N one (for 8-bit).

On entry, the currently selec te d parity is displayed. Use the A rrow k e ys to select Even or Odd. Press [ENTER] to execute the change.

LNA PWR “ON” means LNA power will be ava ila ble on the ce nte r c onductor of the coax

cable. “OFF” means DC power will be remov e d f r om the coax cable.

LNA FLT “ON” means the sy ste m will declare an LNA fault when applicable. “O FF”

means all LNA faults will be ignored by the system.

CALIB. Enables the user to calibrate the LNA . If [ENTER] is pressed, the M&C will

perform an a na log - to-digital conversion of the LNA current, and s tor e the value in the Electrically-Erasable Programmable Read-Only Memory (EEPROM). During the normal operation, the M&C will monitor the recent LNA current, and compare it to the stored value. If the LNA deviates by ± 30%, a fault will be de c la re d.

REF ADJ Allows adjustment of the 10.000 MHz re ference fre que nc y to account for long

term drift. DAC s etting v a rie s from 0 to 256.

4–8 Rev. 1

KST-12025 Ku-Band Satellite Terminal Operation

XFLT ENABL E Enables or disables the ex te rna l fault input. For use with exte rna l T r a v e ling

Wave Tubes (TWTs).

On entry, the currently selec te d parameter will appear. Use the a rrow k e ys to select ON or OFF. Press [ENTER] to execute the change. When ON is selected, all of the uplink e x te rna l f a ults will appear in the front pane l monitoring menus a nd f a ult menus. When OFF is se le c te d, all of the uplink external faults w ill be masked in the front pane l monitoring menus and fa ult menus.

RSW MODE Used in redundant systems only. “INDEP” mea ns uplink a nd downlink switch

independently. “DEP” me a ns a fault in either UL or DL, and both will switch over.

LOCK MODE If the system is placed in the Lock mode, none of the above parameters can be

changed. This is to prevent accidental changes of the operation conditions by unauthorized personnel. T he mode must be c hang e d to Ena ble in orde r to change the existing configuration.

4.3.2.2 Monitor

The Monitor level is accessible from the SELECT menu (Table 4-3). When the Monitor level is entered, press [

] or [→] to select the desired function.

←

Each monitor function is displayed in real time as long as it is selected.

Function Description

U/C Temp D/C Temp HPA Temp USV Tuning voltage monitor for U/C synthes iz e r Vt-S. Range: 3V to 10.5V. UVV Tuning voltage monitor for U/C synthesizer Vt-V. Range: 0.5V to 10V. DCV Tuning voltage monitor for D/C synthesizer Vt-S. Range: 2.0V to 17V. DVV Tuning voltage monitor for D/C synthesizer Vt-V. Range: 0.2V to 20V. TIV Tuning voltage monitor f or the I F L O . Range: 1.25V to 10V.

Up converter temperature monitor. Range: -40 to +90°C. Down converter temperature monitor. Range: -40 to +90°C. HPA temperature monitor. Range: -40 to +90°C.

Rev. 1 4–9

Operation KST-12025 Ku-Band Satellite Terminal

4.3.2.3 Faults

The FAULTS level is accessible from the SELECT menu (Table 4-4). Faults are similar to monitor functions, as they display the current fault status of the group being displayed.

Press [

←] or [→] to move between the faults.

The current faults status is displayed as “OK” or “FLT” for each parameter monitored. “OK” indicates that no fault exists, while “FLT” indicates that a faults exists.

Press [CLEAR] to exit this level of operation and return to the previous level.

The following list outlines the faults monitored in the FAULTS menu. Refer to Chapter 6 for troubleshooting procedures for each displayed fault.

Fault Description

RESTART M&C microproce s s or e x pe ri enc e d a re s ta rt due to power failure or watchdog timer

time-out. UPLINK U/L fault caused by synth, U/C, IFLO, or HPA. DOWNLINK D/L fault c aus e d by synth, D/C, IFL O, or L N A. 5V PWR +5V power supply fault. This is a status only fault and will not turn the tra nsmitter off. 12V PWR +12V power supply fault. This is a status only fault and will not turn the tra nsmitter off. HPA High Power Amplifier fault. Typically indicates that the am plif ie r is not pre se nt or is

not operating. This fault will turn the RF tra nsm itte r off. LNA Low noise amplifier fa ult. T ypically indicates tha t the L N A is not pre s ent, ha s f a ile d, or

exceeded the high or low fault window trip point. This fault will not turn the transmitter

off. U/C LOCK Up c onv e rte r lock fault. Indicates the up conve rte r is not lock e d up. T his f a ult will turn

the transmitter off. USV TUN Up converter synthesi z e r tuning v olta g e . Vt- s . UVV TUN Up converter synthesize r tuning v olta g e . Vt- v . D/C LOCK Down converter loc k f a ult. I ndic at es the down converter is not lock e d up. T his f a ult

will NOT turn the transmitter of f . DCV TUN Down converter synthesizer tuning v olta g e . Vt- s . DVV TUN Down converter synthes i ze r tuning v olta g e . Vt- v . IF LOCK IF synthesiz e r loc k fault. This fault will turn the tra nsm itte r off. IF TUN IF tuning fault.

4–10 Rev. 1

THEORY OF OPERATION

This chapter provides the basic theory of operation for the following components:

• Monitor and Control (M&C)

• High stability oscillator

• IFLO

• Synthesizer

• Up and down converters

5.1 Monitor and Control

The RFT-1225 uses a sophisticated microcontroller module to perform the M&C functions of the terminal. This board (refer to Figure 5-1) is located inside of the RFT-1225, on top of the other assemblies.

Chapter 5.

The M&C monitors the RFT-1225 and provides configuration updates to other modules within the terminal when necessary.

Terminal configuration parameters are maintained in EEPROM, which provides for total recovery after a power-down situation.

Fault monitoring and status gathering are also provided.

All RFT-1225 functions are accessible through the local front panel keypad/display or a remote communications interface.

Note:

For more information on the M&C board, refer to Section 1.1.2.

Rev. 1 5–1

Theory of Operation KST-12025 Ku-Band Satellite Terminal

485

232

Figure 5-1. M&C Card

5–2 Rev. 1

KST-12025 Ku-Band Satellite Terminal Theory of Operation

EIA

5.1.1 EEPROM Memory

EEPROM memory on the M&C module allows it to retain configuration information for at least one year without power. Should the terminal be powered down, the following sequence is carried out by the M&C microcontroller:

1. When power is applied to the M&C, the microcontroller checks the EEPROM Random Access Memory (RAM) to see if valid data has been retained. If valid data has been retained, the terminal is reconfigured to the configuration maintained in EEPROM.

2. If EEPROM memory fails the valid data test, a default configuration from Read Only Memory (ROM) is loaded into the system.

5.1.2 Remote Interface

The functions of the RFT-1225 can be remotely controlled and monitored via an EIA485 or EIA-232-C communications link.

The EIA-485 interface makes it possible to operate 255 terminals on a common communications link.

The EIA-232-C interface is used to communicate with a single terminal.

The M&C module must be hardware configured to one of the two interfaces.

Refer to Figure 5-2 for jumper placement at JP3:

SHORTING

SHUNT

-48 5

SHOWN STR APPED

-23 2-

JP3

R EIA-4

Figure 5-2. M&C Jumper Placement at JP3

Rev. 1 5–3

Theory of Operation KST-12025 Ku-Band Satellite Terminal

5.1.2.1 Remote Interface Specification

Refer to Appendix A.

5.1.3 Terminal Default Conditions

On initial power-up, the unit will default to the following parameters.

Parameter Default

Baud Rate [9600] Parity [Even] Device Address [1] U/C Gain [10.0] D/C Gain [0.0] RF Output [OFF] U/C Frequency [Low end of range] D/C Frequency [Low end of range]

5.1.4 Theory of Operation

Refer to Figure 5-3 for a functional block diagram of the M&C.

The M&C PCB performs the following operations:

• Receives the desired frequency from either the remote EIA-232-C/485 or local keypad, and after converting it to a synthesizer setting, stores it to the applicable synthesizer output latch.

• Reads the thermistors located in the up converter, down converter, and highpower amplifier, and converts them to temperatures for display.

• Reads the characterization EEPROMs in the up converter, down converter, and high-power amplifier, and calculates an Automatic Gain Control (AGC) voltage based on frequency and temperature to linearize the respective module.

• Turns the fan on or off, depending on the temperature.

• Receives fault inputs from all modules, and presents them to the remote EIA-

232-C/485 and the optional local keypad display.

• Performs an initial current sense on the LNA, and stores the reading in EEPROM. Subsequent current sense readings are taken and compared to the initial reading to determine a fault.

5–4 Rev. 1

KST-12025 Ku-Band Satellite Terminal Theory of Operation

LOCAL

KEYPAD/DISPLAY

U/C LOCK DET D/C LOCK DET IF L O C K D E T HPA FAULT

SDA/SCL D/C U/C HPA

HPA THERM IF T U N ING HPA PWR MON COLD/WARM START U/C THERM U/C TUNING U/C LEVEL MON D/C THERM

D/C TUNING 5V MON

12V MON LNA CAL

INP U T PORT

A/D

CONVERTER

8 BIT PARALLEL BUS

PRO GRAM

MEMORY

EEPRO M

2 BIT SER IAL BUS

(OP TIO N AL )

MICROCONTROLLER

TXD/RXD

OUTPUT

LATCHES

CONVERTERS

SERIAL

REMOTE

COMM

LATCHES

D/A

PORT

IFL O C NT L U/C SYNTH D/C SYNTH FAN CNTL

HPA LVL CNTL U/C AGC U/C ATTEN D/C LVL CNTL

REF OSC ADJ

EIA-232

EIA-485

TXD ENABLE

RF SHUTDOWN

LNA FAULT

U/L FAC

D/C FHC

RELAY

NC COM

NO NC COM

UPLINK

DOWNLINK

INPUT POWE R

REGULATOR

CURENT

SENSE

12V

TO LNA

10V

Figure 5-3. M&C Functional Block Diagram

Rev. 1 5–5

Theory of Operation KST-12025 Ku-Band Satellite Terminal

5.1.5 M&C Board Connector Pinouts

5.1.5.1 EIA-232-C/485 Remote Control (J1)

The remote interface is provided on a 9-pin female D connector. Screw locks are provided for mechanical security of the mating connector. The remote connector is a Data Circuit Terminating Equipment (DCE) interface.

Pin # EIA-232-C EIA-485 Description

1 GND GND Ground 2 TD/TX Transmit Data 3 RD/RX Receive Data 4 +RX/TX Plus Transmit or Receive 5 GND -RX/TX Negative Transmit or Receive 6 DSR Data Set Ready 7 RTS Ready to Send 8 CTS +RX/TX Clear to Send (EIA-485 — Plus Transmit or Receive) 9 -RX/TX Negative Transmit or Receive Data

Notes:

1. Clear to Send (CTS) is tied to Ready to Send (RTS) in

2. Pinout for Data Terminal Equipment (DTE) interface is provided for 232-C.

5.1.5.2 Remote Relay Control, J2 DB15-Female

Pin # Name Description

1 EXT 10V Output voltage, 10V at 1000 m A 9 LNA PWR Output, 11V 2 DL FLT NO Downlink FLT, Opens on FLT

10 DL COM DL

3 DL FLT NC DL

11 UL FLT NO Uplink FLT, Opens on FLT

4 UL COM UL FLT Common

12 UL FLT NC UL FLT Closes on FLT

5SPARE

13 SPARE

6 ALOG TST Analog volta g e output, TBD

14 LNA PWR RTM Ground, Return for LNA Powe r

7 EXT INPUT 2 Input, logic 0 or 5V

15 EXT TWT FLT Input, logic 0 or 5V, TWT Fault

8 GRD Ground

EIA-

232-C mode.

EIA-

5–6 Rev. 1

KST-12025 Ku-Band Satellite Terminal Theory of Operation

5.1.5.3 HPA, PS, U/C and D/C, J3 DB37-Male

Pin # Name Description

1 12.5V PWR Input power to M&C , 12.5V, 220 mA

20 12.5V PWR Input power to M&C, 12.5V, 220 mA

2 DC LNA PWR Output power to D C , 10V, 100 mA

21 GND M&C ground

3 GND M&C ground

22 SPARE

4 FREQ CNTRL Output, voltage 0 to 10V

23 FAN CNTR L Output, NPN OC Transistor with resistor to 5V

5SPARE

24 SPARE

6SPARE

25 HPA FLT CO M Output, ground connection to relay common

7 HPA FLT NO Input from high-power amplifier, contact to CO M during nor mal operation

26 SPARE

8SPARE

27 HPA THERM Input, 5K thermistor to g round loc a te d in hig h-power amplif ie r

9 HPA LEVEL CON Output, 0 to 4 VDC for AG C c ontr ol of high-power amplifier output 28 HPA SHUTDOWN Output, NPN OC transistor to GND, low produces shut-off 10 HPA PWR MON Input from high-power amplif ie r, 0 to 4V

29 SPARE 11 SPARE 30 SPARE

12 DC LEVEL CO N Output, analog voltage 0 to 4V, AGC control of D /C output 31 DC LEVEL MO N Input, 0 to 4V 13 DC THERM Input, 5K thermistor to gr ound loc at e d in D/C

32 SPARE

14 HPA SDA Bi-directional seria l da ta 33 DC SDA Bi-direc tional s e ria l da ta 15 UC SDA Bi-direc tional s e ria l da ta

34 HPA SCL Output, serial clock 16 DC SCL Output, serial clock 35 UC SCL Output, serial clock

17 SPARE

36 UC LEVEL MO N Input, 0 to 4V 18 UC THERM Input, 5K thermistor to gr ound loc at e d in U/C 37 UC ATT ( FL C ) Output, analog voltag e 0 to 4V, a tte nuator c ontrol 19 UC AGC (CLC) Output, analog voltage 0 to 4V, AG C c ontr ol

Rev. 1 5–7

Theory of Operation KST-12025 Ku-Band Satellite Terminal

5.1.5.4 Synthesizers (DC/UC/LO), J4 DB37-Female

Pin # Name Description

1 UC LO EN Output CMOS level, Enable Strobe

20 UC LO A1 Ouput CMOS level

2 UC LO DATA Output CMOS level, DATA

21 UC LO CLOCK Output CMOS level, CLOCK

3 UC LO GO Output CMOS level

22 UC LO CNTL V1 Output CMOS level

4 UC LO CNTL V2 Ouput CMOS level

23 UC LO CNTL V3 Output CMOS level

5 UC LO GDCO Output CMOS level

24 UC LO GDC1 Output CMOS level

6 UC LO GDC2 Output CMOS level

25 UC LO GDC3 Output CMOS level

7 UC LO N4 Output CMOS level

26 UC LO N5 Output CMOS level

8 DC LO LC K DE T I nput, 0V = locked, 5V = unlocked

27 DC LO Vt-S Input, 0 to 11V, nominal reading = 6V

9 DC LO Vt-V I nput, 0 to 11V, nominal reading = 6V

28 UC LO Vt-V Input, 0 to 11V, nominal reading = 6V

10 IF LCK DET Input, 0V = locked, 5V = unlocked 29 IF T_MON Input, 0 to 11V, nominal reading = 6V

11 SPARE

30 DC LO EN Output CMOS level, Enable Strobe 12 DC LO A1 Output CMOS level 31 DC LO DATA Output CMOS level, Data 13 DC LO CLOCK Output CMOS level, Clock

32 DC LO GO Output CMOS level 14 DC LO CNTL V1 Output CMOS level 33 DC LO CNTL V2 Output CMOS level 15 DC LO CNTL V3 Output CMOS level

34 DC LO GDC1 Output CMOS level 16 DC LO GDC2 Output CMOS level 35 DC LO GDC3 Output CMOS level 17 DC LO GDC4 Output CMOS level 36 DC LO N4 Output CMOS level 18 DC LO N5 Output CMOS level

37 UC LO LCK DET Input, 0V = locked, 5V = unloc k e d 19 UC LO Vt-S Input, 0 to 11V, nominal reading= 6V

5–8 Rev. 1

KST-12025 Ku-Band Satellite Terminal Theory of Operation

5.1.5.5 Keypad Display, 24-Pin (12 x 2) Ribbon Connector (J5)

The front panel display/keypad is an optional feature which allows the user to configure and monitor status of the terminal locally.

All functions are also accessible from the remote port.

When this option has been installed, the 24-pin ribbon connector will be routed from J5 of the M&C PCB to the keypad/display assembly.

The connection pinouts are as follows:

Pin # Name Description

1 /A0 Address data line 0 inv e r te d 3 /A2 Address data line 1 inv e r te d 5 A2 Address data line 2 7 A3 Address data line 3

9 A4 Address data line 4 11 A5 Address data line 5 13 /D0000 Address D000 inv e rt ed 15 /BFR READ Buffe red read inverted 17 /BFR WRITE Buffered write inverted 19 SPARE 21 /KB INTRPT Reserved for KB interrupt 23 GND Ground

2+5V +5V

4SPARE

6 BFRD AD0 Buffered address da ta line 0

8 BFRD AD1 Buffered address da ta line 1 10 BFRD AD2 Buffered addres s da ta line 2 12 BFRD AD3 Buffered addres s da ta line 3 14 BFRD AD4 Buffered addres s da ta line 4 16 BFRD AD5 Buffered addres s da ta line 5 18 BFRD AD6 Buffered addres s da ta line 6 20 BFRD AD7 Buffered addres s da ta line 7 22 SPARE 24 SPARE

Rev. 1 5–9

Theory of Operation KST-12025 Ku-Band Satellite Terminal

5.1.6 Test Points and LEDs

Refer to Section 6.1.

5.2 High Stability Oscillator

The high stability oscillator provides a low-phase noise, frequency stable, 10 MHz source for the up converter, down converter, and IFLO synthesizers.

The oven, which is provided for additional stability, operates directly from the 12V power source. The electronic control circuitry is buffered by an active filter.

The sinewave output is converted to a CMOS square wave before cabling to the synthesizers.

Refer to Figure 5-4 for a block diagram of the high stability oscillator.

5.2.1 Specifications

Frequency 10 MHz Frequency Stability Output Level CMOS voltages (+5V) Output Waveform Square Wave Input Voltage 12.5V Input Current Warm-up Phase Noise (Maximum); 1Hz Measurement bandwidth measured at 10 MHz

10 Hz 100 Hz 1 kHz

10 kHz Vibrational sensitivity 1 x 10-9/g Aging 5 x 10 Frequency Deviation (mechanical ) To compensate for 1 0 years of aging Frequency Deviation (electrical) ± 2 x 10-6 minimum, 0 to 10 VDC

-8

± 1 x 10

550 mA at turn-on, 300 mA after warm-up at +25°C

2.5 minutes to within 1 x 10

-120 dBc

-150 dBc

-160 dBc

-165 dBc

, -40 to +70°C

-10

/day, 1 x 10-7/year

-7

of final frequency at +25°C

5–10 Rev. 1

KST-12025 Ku-Band Satellite Terminal Theory of Operation

HIGH STABIL ITY OSCIL L ATOR

+12.5 VOLTS

TUNING VOLTAGE

FILTER

0 - 10 VOLT ELECTRONIC TUNING

OSC

PWR

OVEN PWR

12 VOLTS

OVENIZED

HIGH STABILITY

OSCILLATOR

10 MHz

REGULATOR

OUTPUT

Figure 5-4. High Stability Oscillator Block Diagram

BUFFERS

5VOLTS

U/C REFERENCE

10 MHz CMOS LEVELS SQUARE W AVE SMA FEMALE

D/C REFERENCE

10 MHz CMOS LEVELS SQUARE WAVE SMA FEMALE

IF LO REF

10 MHz CMOS LE VELS SQUARE WAVE SMA FEMALE

Rev. 1 5–11

Theory of Operation KST-12025 Ku-Band Satellite Terminal

5.3 IF Local Oscillator

The IFLO contains a Voltage Controlled Oscillator (VCO), loop filter, and a divide down chain.

The loop tracking voltage is sent to the M&C board, where it is monitored along with the lock detect fault.

Refer to Figure 5-5 for a block diagram of the IFLO.

5.3.1 Specifications

Input 10 MHz square wave, CMOS levels Output 1150 MHz (2 each), 2300 MHz (2 each) Connectors SMA Output Impedance Output level +7 dBm (-4 dBm, U/C Synth Reference)

Ω

10 M Hz RE FER EN CE

SMA F EM ALE CMOS LEVELS SQU ARE W AVE

IF LOCAL OSCILLATOR

LOOP

FILTER

PHASE

DETECT

Figure 5-5. IF LO Block Diagram

VCO

DIVIDE DOW N

CHAIN

FILTER

CSYNTHREF

2300 M Hz SMA F EM ALE +7 dBm

D/C SYNTH REF

2300 MH z SMA FEMALE +7 dBm

D/C IF LO

11 5 0 M H z SMA FEMALE +7 dBm

U/C IF LO

115 0 M H z SMA FEMALE +7 dBm

5–12 Rev. 1

KST-12025 Ku-Band Satellite Terminal Theory of Operation

5.4 Synthesizer

The RFT-1225 requires two synthesizers:

• One for the down converter to convert the RF input to a 70 MHz IF output.

• One for the up converter to convert the 70 MHz input to the RF output.

The purpose of the synthesizer module is to convert the 10 MHz reference signal to a variable frequency to perform the conversion.

5.4.1 Specifications

RF Inputs:

Connector Ty pe Impedance Input level

RF Outputs:

Connector Ty pe Impedance Level

10 MHz CMOS square wave, 2300 MHz reference (from IFLO) SMA 50

Ω

+7 dBm

U/C Frequencies 12780 to 13280 MHz D/C Frequencies 9730 to 11530 (RCV 10.95 to 12.75 GHz) 9730 to 10480 MHz (RCV 10.95 to 11.7 GHz) 10480 to 10980 MHz (RCV 11.7 to 12.2 GHz) 11030 to 11530 MHz (RCV 12.25 to 12.75 GHz) SMA 50

Ω

+7 dBm

5.4.2 Theory of Operation

The synthesizer module multiplies the 10 MHz reference clock to a variable clock by use of:

• VCOs

• Loop filters

• Phase detectors

• Variable divide-down chains

The divide-down chain is controlled by the M&C board through the use of CMOS signals.

The VCO tuning voltages are sent to the M&C for monitoring, as well as a summary lock detect fault.

Refer to Figure 5-6 for a diagram of the down converter LO synthesizer. Refer to Figure 5-7 for a diagram of the up converter LO synthesizer.

Rev. 1 5–13

Theory of Operation KST-12025 Ku-Band Satellite Terminal

DOWNLINK SYNTH RF OUTPUT

SMA FEMALE +8 dBm 9730 to 11530 MHz

10 MHz REFERENCE SMA FEMALE

CMOS LEVELS SQUARE WAVE

M&C BUS

LO REFERENCE

2300 MHz SMA FEMALE

-7 dBm

+12 VDC FREQUENCY CONTROL VCO TUNING VOLTAGE MONITO RS LOCK DETECT SIGNALS

(10.95 to 12.75 GHz RCV) 9730 to 10480 MHz (10.95 to 11.7 GHz RCV) 10480 to 10980 MHz (11.7 to 12.2 GHz RCV) 11030 to 11530 MHz (12.25 to 12.75 GHz RCV)

Figure 5-6. Down Converter Synthesizer Diagram

10 MHz REFERENCE SMA FEMALE

CMOS LEVELS SQUARE WAVE

M&C BUS

LO REFERENCE

2300 MHz SMA FEMALE

-4 dBm

+12 VDC FREQUENCY CONTROL VCO TUNI NG VOLTAGE MONITO R LOCK DETECT SIGNALS

Figure 5-7. Up Converter Synthesizer Diagram

5.5 Down Converter

The function of the down converter is to convert the Ku-band signal from the LNA to a 70 MHz IF signal for use in the modem.

Refer to Figure 5-8 for a functional block diagram of the down converter.

U/C RF LO

12780 to 13280 MHz SMA FEMALE +8 dBm

5–14 Rev. 1

Comtech EF Data KST-12025 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Errata A

Errata B

About this Manual

Conventions and References Used in this Manual

Cautions and Warnings

Preface

Overview of Changes to Previous Edition

Reporting Comments or Suggestions Concerning this Manual

Customer Support

Table of Contents

1.1.2 Monitor and Control

2.2 Inspecting the Equipment

2.3.2 Vertical Pole Installation

2.4 LNA and Flexible Waveguide Installation

2.5.1 TX/IF Input (J1)

2.5.2 TX/RF Output (J2)

2.5.3 RX/IF Output (J3)

2.5.4 RX/RF Input (J4)

2.5.5 Prime Power (J5)

2.5.6 Serial Remote Control (J6)

3.2 Inspecting the Equipment

3.3.2 Vertical Pole Installation

3.3.4 1:1 Redundant Plate Installation

3.3.5 Waveguide Switch Installation

• System operation

4.3 Front Panel Display/Keypad

4.3.1 Front Panel Controls

5.1 Monitor and Control

Theory of Operation KST-12025 Ku-Band Satellite Terminal

5.1.3 Terminal Default Conditions

5.1.5 M&C Board Connector Pinouts

5.1.6 Test Points and LEDs

5.2 High Stability Oscillator

IF LOCAL OSCILLATOR

KST-12025 Ku-Band Satellite Terminal Theory of Operation