Comtech EF Data KPA-020IN, KPA-040, KPA-100, KPA-080 Installation And Operation Manual

KPA

IMPORTANT NOTE: The information contained in this document supercedes all previously published information regarding this product. Product specifications are subject to change without prior notice.

Ku-Band Solid-State Power Amplifier

KPA-020IN, KPA-040, KPA-080, KPA-100

Installation and Operation Manual

Part Number MN/KPA.IOM Revision 0

Comtech EF Data is an ISO 9001 Registered Company.

KPA

Ku-Band Solid-State Power Amplifier

KPA-020IN, KPA-040, KPA-080, KPA-100

Installation and Operation Manual

Part Number MN/KPA.IOM

Revision 0

September 30, 2005

Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, 480.333.2200, FAX: 480.333.2161.

Customer Support

Contact the Comtech EF Data Customer Support Department for:

• Product support or training

• Information on upgrading or returning a product

• Reporting comments or suggestions concerning manuals

A Customer Support representative may be reached at:

Comtech EF Data Attention: Customer Support Department 2114 West 7th Street Tempe, Arizona 85281 USA

480.333.2200 (Main Comtech EF Data Number)

480.333.4357 (Customer Support Desk)

480.333.2161 FAX

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

service@comtechefdata.com

1. To return a Comtech EF Data product (in-warranty and out-of-warranty) for repair or replacement:

2. Request a Return Material Authorization (RMA) number from the Comtech EF Data Customer Support Department.

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

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

5. Ship the product back to Comtech EF Data. (Shipping charges should be prepaid.)

For more information regarding the warranty policies, see Warranty Policy, p. x.

Table of Contents

CHAPTER 1. INTRODUCTION............................................................................................................1-1

1.1 Overview .................................................................................................................................................... 1-1

1.2 Functional Description.............................................................................................................................. 1-3

CHAPTER 2. INSTALLATION.............................................................................................................2-1

2.1 Unpacking .................................................................................................................................................. 2-1

2.2 Installation ................................................................................................................................................. 2-2

2.2.1 Prime Power Connection............................................................................................................................. 2-2

2.2.2 Cable Connections....................................................................................................................................... 2-3

2.2.3 Optional: Redundancy Kit Installation........................................................................................................ 2-3

CHAPTER 3. CONNECTOR PINS.......................................................................................................3-1

3.1 External Connections................................................................................................................................ 3-1

3.1.1 Redundant Loop Interface, Connector J4.................................................................................................... 3-2

3.1.2 Customer Discrete Control, Connector J5................................................................................................... 3-2

3.1.3 RS-232/RS-485 Interface, Connector J6 ..................................................................................................... 3-4

3.1.4

Waveguide Switch Interface, Connector J7 ................................................................................................ 3-4

3.2 Prime Power Switch .................................................................................................................................. 3-5

3.3

Dimensional and Outline Diagrams......................................................................................................... 3-5

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CHAPTER 4. OPERATION .................................................................................................................. 4-1

4.1 General....................................................................................................................................................... 4-1

4.1.1

Front Panel .................................................................................................................................................. 4-1

4.1.2 Front Panel Indicators ................................................................................................................................. 4-3

4.1.3 Switching On............................................................................................................................................... 4-4

Operation ................................................................................................................................................... 4-5

4.2

4.2.1 KPA Commands.......................................................................................................................................... 4-7

4.2.1.1 SELECT: CONFIGURATION MENU ........................................................................................................ 4-8

4.2.1.2 SELECT: MONITOR STATUS MENU .................................................................................................... 4-10

4.2.1.3 Current Faults Menu................................................................................................................................... 4-13

4.2.1.4 SELECT: STORED FAULTS MENU ....................................................................................................... 4-15

4.2.1.5 SELECT: UTILITY FUNCTIONS MENU................................................................................................ 4-16

4.2.1.6 Current Faults Menu................................................................................................................................... 4-13

CHAPTER 5.

5.1 General....................................................................................................................................................... 2-1

5.2 Redundant Operation ............................................................................................................................... 5-1

5.2.1 Control Cabling for a 1:1 System................................................................................................................ 5-2

5.2.2

Control Cabling for a 1:2 System................................................................................................................ 5-3

5.2.3 Gain Equalization of Redundant Units........................................................................................................ 5-4

CHAPTER 6.

6.1 General....................................................................................................................................................... 6-1

6.2 Electrical Interface.................................................................................................................................... 6-2

6.3 Interface Connector .................................................................................................................................. 6-2

6.4 Cables ......................................................................................................................................................... 6-3

6.5 Protocol ...................................................................................................................................................... 6-4

6.6 Access Methods.......................................................................................................................................... 6-5

6.6.1 Direct Access............................................................................................................................................... 6-5

6.6.2 Indirect Access ............................................................................................................................................ 6-5

REDUNDANT CONFIGURATION .................................................................................5-1

REMOTE CONTROL SPECIFICATION ........................................................................6-1

6.7 Addressess.................................................................................................................................................. 6-6

6.7.1 Physical Address ......................................................................................................................................... 6-6

6.7.2 Virtual Address ........................................................................................................................................... 6-6

6.7.3 Message Structure ....................................................................................................................................... 6-6

6.7.4 Start Character............................................................................................................................................. 6-6

6.7.5 Device Address ........................................................................................................................................... 6-7

6.7.6 Command .................................................................................................................................................... 6-7

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6.8 Confirmation Response............................................................................................................................. 6-7

6.8.1 Error Response ............................................................................................................................................ 6-7

6.8.2 End of Message ........................................................................................................................................... 6-8

6.8.2.1 Command Ending......................................................................................................................................... 6-8

6.8.2.2 Response Ending .......................................................................................................................................... 6-8

6.9 Command/Response Pairs........................................................................................................................ 6-9

6.9.1 Utility Commands ....................................................................................................................................... 6-9

6.9.2 Configuration Commands ......................................................................................................................... 6-10

6.9.3 Mode Commands ...................................................................................................................................... 6-11

6.9.4 Status Commands...................................................................................................................................... 6-12

6.9.5 Stored Alarms............................................................................................................................................ 6-16

6.9.6 Error Processing ........................................................................................................................................ 6-17

6.9.7 Configuration Errors ................................................................................................................................. 6-17

6.9.8 Time-Outs ................................................................................................................................................. 6-17

CHAPTER 7. MAINTENANCE AND TROUBLESHOOTING ..............................................................7-1

7.1 General....................................................................................................................................................... 7-1

7.2 Maintenance Testing ................................................................................................................................. 7-2

7.3 Troubleshooting......................................................................................................................................... 7-2

APPENDIX A . SPECIFICATIONS ........................................................................................................ A-1

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Figures

Figure 1-1. Family of Ku-Band Solid-State High Power Amplifiers ....................................................................... 1-1

Figure 1-2. Block Diagram of KPA-020IN .............................................................................................................. 1-2

Figure 1-2. Block Diagram of KPA-040 .................................................................................................................. 1-3

Figure 1-2. Block Diagram of KPA-080/100 ........................................................................................................... 1-4

Figure 2-1. Redundancy Installation......................................................................................................................... 2-4

Figure 3-1. Rear Panel (KPA-040, 080, or 100, KPA-020IN Not Shown)............................................................... 3-1

Figure 3-2. KPA-080/100 Dimensional Diagram inches) ........................................................................................ 3-7

Figure 3-3. KPA-080/100 Redundant Outline Diagram ........................................................................................... 3-9

Figure 4-1. Menu Tree.............................................................................................................................................. 4-6

Figure 5-1. Control Cabling of a 1:1 System............................................................................................................ 5-2

Figure 5-2. Control Cabling of a 1:2 System............................................................................................................ 5-3

Tables

Table 2-1. Cable Connections................................................................................................................................... 2-3

Table 2-2. Redundancy Kit (AS/0435) ..................................................................................................................... 2-5

Table 2-3. Redundancy Kit (KPA-040).................................................................................................................... 2-5

Table 3-1. Rear Panel Connectors ............................................................................................................................ 3-1

Table 3-2. Redundant Loop Interface, Connector J4 ................................................................................................ 3-2

Table 3-3. Customer Discrete Control, Connector J5............................................................................................... 3-2

Table 3-3a. Customer Discrete Control, Connector J5............................................................................................. 3-3

Table 3-4. RS-232/RS-485 Interface, Connector J6 ................................................................................................. 3-4

Table 3-5. Waveguide Switch Interface, Connector J7 ............................................................................................ 3-4

Table 4-1. Operating Functions ................................................................................................................................ 4-2

Table 4-2. Front Panel Indicators ............................................................................................................................. 4-3

Table 6-1. Protocol Description................................................................................................................................ 6-4

Table 6-2. Possible Time-Out Sources ................................................................................................................... 6-17

Table 7-1. Troubleshooting ...................................................................................................................................... 7-3

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About this Manual

This manual provides installation and operation information for the Comtech EF Data Ku-Band Solid-State Power Amplifier, KPA-020IN, KPS-040, KPA080, and KPA100. This is a technical document intended for earth station engineers, technicians, and operators responsible for the operation and maintenance of the KPA.

Conventions and References

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

WARN ING

unsafe practices or risks of property damage.

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

Safety Notices

This equipment has been designed to minimize exposure of personnel to hazards. The operators and technicians must:

CAUTION

WARN ING

IMPORTANT

• Know how to work around, with, and on high voltage and high RF power level equipment.

• Exercise every precaution to ensure personnel safety.

• Exercise extreme care when working near high voltages/high RF power

level equipment.

• Be familiar with the warning presented in this manual.

• Disconnect the power supply cord before servicing the SSPA.

Lithium Battery Replacement: There is a damage that the Lithium battery on the M&C assembly will explode if the battery is incorrectly replaced. Replace only with the same or equivalent type battery recommended by the manufacturer. Dispose of used batteries according to the Lithium battery manufacturer’s instructions.

Indicates information critical for proper equipment function.

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Metric Conversion

Metric conversion information is located on the inside back cover of this manual. This information is provided to assist the operator in cross-referencing Non-Metric to Metric conversions.

Military Standards

References to “MIL-STD-188” apply to the 114A series (i.e., MIL-STD-188-114A), which provides electrical and functional characteristics of the unbalanced and balanced voltage digital interface circuits applicable to both long haul and tactical communications. Specifically, these references apply to the MIL-STD-188-114A electrical characteristics for a balanced voltage digital interface circuit, Type 1 generator, for the full range of data rates. For more information, refer to the Department of Defense (DOD) MIL-STD-188-114A, “Electrical Characteristics of Digital Interface Circuits.”

Recommended Standard Designations

Recommended Standard (RS) Designations is equivalent to the new designation of the Electronic Industries Association (EIA). All references in the manual will be shown either has the EIA designations (EIA-232, EIA-485, etc.) or the RS designations..

Trademarks

Windows is a trademark of the Microsoft Corporation.

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

Reporting Comments or Suggestions Concerning this Manual

Comments and suggestions regarding the content and design of this manual will be appreciated. To submit comments, please contact the Comtech EF Data Customer Support Department: tpubs@comtechefdata.com

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European EMC Directive

In order to meet the European Electro-Magnetic Compatibility (EMC) Directive (EN55022, EN50082-1), properly shielded cables for DATA I/O are required. More specifically, these cables must be shielded from end-to-end, ensuring a continuous ground shield.

The following information is applicable for the European Low Voltage Directive (EN60950):

<HAR> Type of power cord required for use in the European Community.

CAUTION: Double-pole/Neutral Fusing

International Symbols:

ACHTUNG: Zweipolige bzw. Neutralleiter-Sicherung

Alternating Current.

Fuse. Safety Ground.

Chassis Ground.

Note: For additional symbols, refer to “Cautions and Warnings” listed earlier in this preface.

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Warranty Policy

This Comtech EF Data product is warranted against defects in material and workmanship for a period of 2 years from the date of shipment. During the warranty period, Comtech EF Data will, at its option, repair or replace products that prove to be defective.

For equipment under warranty, the customer is responsible for freight to Comtech EF Data and all related custom, taxes, tariffs, insurance, etc. Comtech EF Data is responsible for the freight charges only for return of the equipment from the factory to the customer. Comtech EF Data will return the equipment by the same method (i.e., Air, Express, Surface) as the equipment was sent to Comtech EF Data.

Limitations of Warranty

The foregoing warranty shall not apply to defects resulting from improper installation or maintenance, abuse, unauthorized modification, or operation outside of environmental specifications for the product, or, for damages that occur due to improper repackaging of equipment for return to Comtech EF Data.

No other warranty is expressed or implied. Comtech EF Data specifically disclaims the implied warranties of merchantability and fitness for particular purpose.

Exclusive Remedies

The remedies provided herein are the buyer's sole and exclusive remedies. Comtech EF Data shall not be liable for any direct, indirect, special, incidental, or consequential damages, whether based on contract, tort, or any other legal theory.

Disclaimer

Comtech EF Data has reviewed this manual thoroughly in order that it will be an easy-to-use guide to your equipment. All statements, technical information, and recommendations in this manual and in any guides or related documents are believed reliable, but the accuracy and completeness thereof are not guaranteed or warranted, and they are not intended to be, nor should they be understood to be, representations or warranties concerning the products described. Further, Comtech EF Data reserves the right to make changes in the specifications of the products described in this manual at any time without notice and without obligation to notify any person of such changes.

If you have any questions regarding your equipment or the information in this manual, please contact the Comtech EF Data Customer Support Department.

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NOTES:

Chapter 1. Introduction

1.1 Overview

The Ku-Band Solid-State High Power Amplifier (KPA) is designed for use in communication systems, or in satellite up-link data systems. The KPA (Figure 1-1) operates over the RF input frequency range of 14.0 to 14.5 GHZ.

1.2 Functional Description

The KPA is designed to be hard mounted in a standard 19-inch (48 cm) rack or cabinet, or to be rack mounted using Comtech EF Data slide mechanisms provided with the SSPA to allow it to be serviced without its removal from the rack. Two internally mounted exhaust fans are mounted on the chassis for cooling. An AC power connector, with an On/Off switch, is located on the rear on the chassis. A six-foot AC power cord is supplied with the unit.

All operator controls, indicators, and displays for local and remote operation as well as the RF Input and Output sample test ports are located on the front panel of the unit. Connectors for the external interface connections are located on the rear of the unit chassis.

The KPA (Figures 1-2, 1-3, or 1-4) consists of a chassis, power supply, fan assembly, front panel assembly, monitor/control processor (MCP) and a Comtech EF Data solidstate power amplifier (SSPA) module. The KPA is designed using a Comtech EF Data low loss combining technique and an MCP based temperature versus gain compensation.

The front panel contains a user-friendly LCD menu display and cursor control key in order to display status or change parameters. The front panel also has LEDs for quick reference to binary status points and both input and output sample ports at –20 dBc and –40 dBc for easy test point access.

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Each unit has the ability to function as a 1+1 or 1+2 redundancy controller in the backup mode. The optional redundancy configuration is implemented by attaching a ganged Waveguide/coax transfer switch (es) to input and output connectors of the amplifiers with a combination coaxial cable and Waveguide kit.

When the backup KPA is commanded into the controller mode, it monitors the online KPA’s for faults. A faulted online unit may be disconnected and replaced without affecting the online power amplifier.

KPA-020IN

KPA-040

KPA-080 KPA-100

Figure 1-1. Family of KU-Band Solid-State Power Amplifiers

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Figure 1-2. Block Diagram of KPA-020IN

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Figure 1-3. Block Diagram of KPA-040

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OUTPUT SAMPLE

INPUT SAMPLE

RF INPUT

AC POWER INPUT

CUST. GAIN CTRL

9V #1

9V #2

-5Vdc Interloc k

Keypad & Display

J6COM1

-5Vdc

9V #1 9V #2

PS #1 9Vdc

Interloc k

-5V -12V 12V

PS #2 9Vdc

-5V -5V9V 9V

POWER CONDITIONING & CONTROL

MONITOR & CONTROL

BLOCK DIAGRAM

TEMP. COMP.

CONTROL & MONITOR

FAN1

FAN2

28Vdc PS

+12V

-12V

AUX. P S & SWITCH CONTROL

OUTPUT POWER DETECTOR

REFLECTED POWER DETECTOR

OUTPUT (W/G)

REDUND.

LOOP

DISCRETE

CONTROL

REDUND. SWITCH

CONTROL

Figure 1-4. Block Diagram of KPA-080 /-100

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Notes:

________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________

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Chapter 2. Installation

2.1 Unpacking

Perform a receiving inspection as follows:

• Inspect the shipping container for damage. The shipping container and packing materials should be retained for possible reshipment.

• Check to determine that all parts, materials and documentation have been shipped with the KPA. The KPA should be inspected for possible damage, and then tested for proper operation.

• If the shipment exhibits any of the following, contact Comtech EF Data Customer Support:

♦ Incomplete ♦ Mechanical damage ♦ Inoperable

If there is damage to the shipping container, notify the carrier. Retain all shipping materials for inspection by the carrier.

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2.2 Installation

The KPA is designed for installation to mount in a standard 19-inch (48 cm) rack cabinet or enclosure. The KPA chassis requires 8.75 inches (22 cm) of panel height space.

Adequate air ventilation should be provided to the rack mounted equipment. Cool air is taken in through the front panel and exhausted out the rear panel.

Locate the KPA so the input and output airflow paths are not obstructed or restricted. This will minimize the amplifier operating temperature.

• If the KPA is to be mounted on slides, the slides must be the Comtech EF Data rack slides provided with the KPA. Proceed as follows:

 Mount the slides on the sides of the KPA chassis with the provided

mounting hardware.

 Install the slide rails on the rack cabinet enclosure.  Secure the KPA to the cabinet with four screws inserted through the

KPA front panel slotted holes.

2.2.1 Prime Power Connection

The On/Off prime power switch is located on the rear of the chassis adjacent to the prime power input connector. The circuit breaker is rated for 30 Amps.

The detachable power cord mates with the AC Prime power receptacle on the rear of the KPA chassis.

Power Cord

For KPA-020IN only:

For KPA-040 only:

For KPA-080/100 only:

A power cord for connection to 90 to 135 VAC, 47 to 63 Hz, power sources is provided with the KPA. A power cord for connection to 90 to 270 VAC, 47 to 63 Hz, power sources is provided with the KPA. A power cord for connection to 180 to 270 VAC, 47 to 63 Hz, power sources is provided with the KPA.

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2.2.2 Cable Connections

The cable signal functions are shown in Table 2-1.

Table 2-1. Cable Connections

Connector Function

J1 KPA RF Input (RF). Mating connector: Type SMA Female J2 KPA RF Output (RF). Mating connector: WR75G J3 AC Prime Power (Cord provided with KPA) J4 Redundant Loop Interface (for use in redundant configurations) J5 Customer Discrete Control J6 COM 1: Serial Communications Interface, RS-232 or RS-485

communications links Mating connector: Type DB9M

J7 Waveguide Switch Interface (for use in redundant configurations)

2.2.3 Optional: Redundancy Kit Installation

Comtech EF Data KPAs are easily configured for redundant systems by using one of the optional Redundant Cable Kits. These kits include all the necessary controls, semi-rigid, and waveguide cabling, and appropriate waveguide/coax switches and terminations.

Figure 2-1 shows the typical 1:1 installation and Table 2-2 shows the associated parts list. The primary and backup KPAs shall be installed next to each other in a standard 19-inch (48 cm) equipment rack. Because of the configuration of the dual WG-Coax Switch, the upper KPA will always act as the backup.

Install a gasket between each waveguide interface. If both waveguide surfaces are grooved, use a “thick” gasket. If only one surface is grooved,

IMPORTANT

use a “thin” gasket.

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Figure 2-1. Redundancy Installation

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Table 2-2. Redundancy Kit (AS/0435)

Item No. Part No. QTY Nomenclature

10 CA/RF0075 1 Cable, SW P3 to Upper J1, Red Kit, 1:1 20 CA/RF0076 1 Cable, SW P2 to Lower J1, Red Kit, 1:1 30 CA/RF0065 1 Cable, SW P4 to Isolator, Red Kit. 1:1 40 CA/WR0006 1 Cable, Redundant Loop 50 CA/WR0007 1 Cable, Waveguide Switch to B-UP J7 60 CN/CX2001-6501-00 1 Connector, OSM, SMS, Plug Termination 70 FP/BR0042 1 Bracket, Mounting, Isolator, Red Kit 1:1 80 FP/WG0045 1 Waveguide, WR75, Upper, 90, Red Kit 1:1

90 FP/WG0046 1 Waveguide, WR75, Lower, 90, Red Kit 1:1 100 FP/WG0024 1 Waveguide, WR75, Elbow, 90, Red Kit 1:1 110 FP/WG0025 1 Waveguide, WR75, Termination, 150W, Red Kit, 1:1 120 GA/GSKT,WR75,FULL 7 Gasket, WR75, Full THK 130 HW/080/3/16PHMS 2 0-80 x 3/16 PHM Screw, SS 140 HW/632X3/8SHCS-B 32 Screw, 6-32 x 3/8 SHCS, Black 150 HW/06LOCK 32 #6 Lock Washer, SS 160 RF/ISHF037306-001 1 RF-ISO, 13-16G, SMS-FF 170 SW/WG-754A0 1 SW-WR75, O-Ring, Dual WGSMA 180 XX/P-SUPER O-LUBE AR Parker Super, O-Lube, 2 oz

Table 2-3. Redundancy Kit (KPS-040)

Item No. Part No. QTY Nomenclature

10 CA/RF0063 1 Cable, SW P3 to Upper J1, Red Kit, 1:1

20 CA/RF0064 1 Cable, SW P2 to Lower J1, Red Kit, 1:1

30 CA/RF0065 1 Cable, SW P4 to Isolator, Red Kit. 1:1

40 CA/WR0006 1 Cable, Redundant Loop

50 CA/WR0007 1 Cable, Waveguide Switch to B-UP J7

60 CN/CX2001-6501-00 1 Connector, OSM, SMS, Plug Termination

70 FP/BR0042 1 Bracket, Mounting, Isolator, Red Kit 1:1

80 FP/WG0022 1 Waveguide, WR75, Upper, 90, Red Kit 1:1

90 FP/WG0023 1 Waveguide, WR75, Lower, 90, Red Kit 1:1 100 FP/WG0024 1 Waveguide, WR75, Elbow, 90, Red Kit 1:1 110 FP/WG0025 1 Waveguide, WR75, Termination, 100W, Red Kit, 1:1 120 GA/GSKT,WR75,FULL 7 Gasket, WR75, Full THK 130 HW/1.6 MM 2 1.6MM Screw 140 HW/632X3/8SHCS-B 32 Screw, 6-32 x 3/8 SHCS, Black 150 HW/06LOCK 32 #6 Lock Washer, SS 160 RF/ISQC140145-1FF 1 RF-ISO, 13-16G, SMS-FF 170 SW/WG-3SAG 1 SW-WR75, O-Ring, Dual WGSMA 180 XX/P-SUPER O-LUBE AR Parker Super, O-Lube, 2 oz

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Perform the installation as follows:

Step Procedure

1 Assemble the waveguide load and bend to the proper port of the switch. 2 Attach the rigid lower waveguide arm, using the supplied screws. The switch should be

installed with “Port 1” facing outward.

3 The upper Waveguide (flexible arm) along with the isolator bracket should be installed

next.

4 Complete the installation by attaching the coaxial cables, coaxial load, and control

cables.

5 Note that the installation of the control cables determines which unit will function as the

backup KPA. Due to the nature of the dual WG-coax switch, this will always be the upper unit. Therefore, the end of the redundant loop cable (40, Figure 2-1) labeled “BU SSPA,” should be connected to J4 of the upper (back-up) unit.

6 The appropriate end of the control cable attaching to the Waveguide switch (50) should

also be attached to the backup unit (J7).

Note: Redundancy kits with all the cabling and switches for a 1:2 configuration also are available, and are usually designed to a particular customer’s specifications. Contact Comtech EF Data for 1:2 redundancy kits and installation diagrams.

2-6

Chapter 3. CONNECTOR PINOUTS

3.1 External Connections

Figure 3-1. Rear Panel (KPA-040, 080, or 100, KPA-020IN Not Shown)

Connector Description Mating Connecting

J1 RF Input (RF IN) Type SMA (f) J2 RF Output (RF OUTPUT) WR75G J3 AC Prime Power Input (AC IN) J4 Redundant Loop Interface

J5 Customer Discrete Control

J6 COM1 Port (RS-232/RS-485) (COM1) DB9M J7 Waveguide Switch Interface

AC Power On/Off Switch

3-1

Table 3-1. Rear Panel Connectors

MS3116F14-19P

(REDUND LOOP)

MS 3116F14-19P

(DISCRETE CONTROL)

MS3116F12-10P

(RF SWITCH)

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3.1.1 Redundant Loop Interface, Connector J4

The Redundant Loop Interface connector J4 is a 19-pin circular connector, type MS3112E14-19S. The pin-out specification is contained in Table 3-2. This connector is used only in redundant configurations.

Table 3-2. Redundant Loop Interface, Connector J4

Pin # Description Pin # Description

A Loop In 1 L Sumflt 2 NO B ADDR 2 M SumFlt 2 Common C Loop In 2 N Local Loop Out D Loop Out 2 P Sumflt 1 NO

E ADDR Common R Sumflt 1 Common

F ADDR 1 S Local Sumflt Common G Loop Out 1 T Local Sumflt NO H HSB +RX/TX U No Connect

J HSB – RX/TX V No Connect

K Local Loop In

3.1.2 Customer Discrete Control, Connector J5

The Customer Discrete Control connector J5 is a 19-pin circular connector, type MS3112E14-19S. The pin-out specification is contained in Table 3-3 or Table 3-3a..

Table 3-3. Customer Discrete Control, Connector J5

(Stand-alone or 1:1 System)

Pin # Signal Name Description

A Auto Select Momentary short to pin F to force entire subsystem to

Auto Mode. B BU-1 Command Momentary short to pin F to force backup of KPA #1. C Priority 2 Sel Not applicable for 1:1 system D BU-2 Command Not applicable for 1:1 system E 2 Online NO Not applicable for 1:1 system F Remote Common Control – Remote Common. G Online Common Online Status Common. H BU Online NO Open when Online, all other conditions tied to Pin G.

J Manual Select Momentary short to pin F to force entire subsystem to

Manual Mode. K 1 Online NO Open when Online, all other conditions tied to Pin G. L 2 Fault NO Not applicable for 1:1 system

M Priority 1 SEL Momentary short to pin F to set KPA #1 as High priority. N Fault Common Fault Status Common.

P BU Fault NO Open when faulted, else tied to Pin N.

R BU Offline CMD Momentary short to pin F to force backup KPA Offline.

S 1 Fault NO Open when faulted, else tied to Pin N.

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Table 3-3a. Customer Discrete Control, Connector J5

(Redundant System 1:N )

Pin # Signal Name Description

A Auto Select Momentary short to pin F to force entire subsystem to

Auto Mode. B BU-1 Command Momentary short to pin F to force backup of KPA #1.

C Priority 2 Sel Momentary short to pin F to set KPA #2 as HIGH priority. D BU-2 Command Momentary short to pin F to force backup of KPA #2.

priority. E 2 Online NO Open when Omnline, all other conditions tied to pin G.

see Note 1. F Remote Common Control – Remote Common.

G Online Common Online Status Common. H BU Online NO Tied to pin G when Redundancy functioning correctly, all

other conditions OPEN. See Note 2.

J Manual Select Momentary short to pin F to force entire subsystem to

Manual Mode. K 1 Online NO Open when Online, all other conditions tied to Pin G. see

Note 1. L 2 Fault NO Open when faulted, else tied to Pin N.

M Priority 1 SEL Momentary short to pin F to set KPA #1 as HIGH priority. N Fault Common Fault Status Common.

P BU Fault NO Open when faulted, else tied to Pin N.

R BU Offline CMD Momentary short to pin F to force backup KPA Offline.

S 1 Fault NO Open when faulted, else tied to Pin N.

Notes:

1. Online status subject to state of Pin H.

2. When Open, can indicate loss of power or cabling problem. Online State of unit not determinable when open.

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3.1.3 RS-232/RS-485 Interface, Connector J6

The RS-232/RS-485 Interface connector J6 is a 9-pin D type DB9F connector socket. The pin-out specifications are contained in Table 3-4. The mating connector is a DB9M.

Table 3-4. RS-232/RS-485 Interface, Connector J6

Pin # RS-232 RS-485 4-Wire RS-485 2-Wire

1 No Connect Ground (GND) Ground (GND) 2 Transmit Data (TD) No Connect No Connect 3 Receive Data (RD) No Connect No Connect 4 No Connect +TX Signal +RX/TX Signal 5 Ground (GND) -TX Signal -RX/TX Signal 6 Unit Ready – always high

(DSR)

7 Request to Send. Looped

to CTS (RTS) 8 Clear to Send (CTS) +RX Signal +RX/TX Signal 9 No Connect -RX Signal -RX/TX Signal

No Connect No Connect

3.1.4 Waveguide Switch Interface, Connector J7

The waveguide switch interface connector J7 is a 10-pin circular connector, type MS3112E12-10S. The pin-out specification is contained in Table 3-5. This connector is used only in redundant configurations.

Table 3-5. Waveguide Switch Interface, Connector J7

Pin # Description

A Command BU-1 B Command Common C Command 1 Online D IND 1 Online E IND Common F IND BU Online G Command BU-2 H Command BU-2

J IND 2 Online

K No Connect

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3.2 Prime Power Switch

The On/Off Prime Power Switch is located on the rear of the chassis adjacent to the Prime Power input connector. The circuit breaker is rated for 30 amps.

3.3 Dimensional and Outline Diagrams

KPA-020IN: Refer to Figure 3-2 for the Dimensional Diagram (all measurements shown in inches)

KPA-080/100 only. Refer to Figure 3-3for the Dimensional Diagram (all measurements shown in inches) and to Figure 3-4 for the Redundancy Outline Diagram.

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NOTES:

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Figure 3-2. KPA-020IN Dimensional Diagram (inches)

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NOTES:

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Figure 3-3. KPA080/100 Dimensional Diagram (inches)

Comtech EF Data reserves the right to make changes to specifications of products described in this document at any time without notice and without obligation to notify any person of such changes.

1.50

24.00 14-19S

.92

SMA (F)

SWITCH

1.66

7.28

2.50

C ENTRY

AC IN

RF IN

REDUNDANT LOOP

6.65

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Figure 3-4. KPA080/100 Redundancy Outline Diagram

Comtech EF Data reserves the right to make changes to specifications of products described in this document at any time without notice and without obligation to notify any person of such changes.

BLOCK DIAGRAM

RF IN

COAX

RF OUT

SSPA

SWITCH

SSPA

DISCRETE C ONT RO L

COM1

RF SWITCH

COM1

DISCRETE C ONT RO L

RF SWITCH

RF OUT

REDUNDANT LOOP

RF OUT

AC IN

RF IN

AC IN

RF IN

PORT 1

19.0

7.8

RF OUT

17.5

6.1

C IN

REDUNDANT LOOP

RF IN

C IN

REDUNDANT LOOP

RF IN

PORT 1

RF SWITCH

DISCRETE C ONTROL

COM1

RF SWITCH

DISCRETE C ONTROL

COM1

(CONTROL CABLES N OT SHOWN IN THIS VIEW)

4.1 General

The front panel of the KPA has a keypad for the operator input commands, an LCD Display, LED status indicators, and connector test sample ports to monitor the RF input and output signals.

4.1.1 Front Panel

The front panel contains a User Interface keypad which is used by a local operator to input commands to the KPA. The keypad is used to select the configuration for operating and monitoring the status of the KPA.

In conjunction with the front panel two line, 24-character, LCD display, the keypad allows the operator to select one of five configurations. The configuration functions are:

• Configuration Menu

• Monitor Status Menu

• Currents Faults Menu

• Stored Faults Menu

• Utility Functions Menu

Chapter 4. Operation

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Refer to Table 4-1 for logical function of each keypad entry:

Table 4-1. Operating Functions

Item Function Description Reference

[ENTER] Enters commands into the converter. ENT CLR Clears commands and data selected and not entered. CLR Arrow Key Selects functions and the menu operating data. Arrow key Selects functions and the menu operating data. Arrow Key Selects functions and the menu operating data. Arrow Key Selects functions and the menu operating data. LCD Display Displays commands and data entered into the keypad. GREEN Indicator Prime Power is applied when the light is On. POWER ON YELLOW Indicator Transmit function operating when the light is On. TRANSMIT ON YELLOW Indicator In REMOTE CONTROL Mode, when the light is ON. REMOTE YELLOW Indicator Operating On-Line to RX data when the light is On. ON-LINE RED Indicator Fault condition exists when the light is On. FAULT RED Indicator Faults stored and logged when the light is On. STORED FAULT Input Sample Type N connector test point to sample RF input. SAMPLE INPUT Output Sample Type N connector test point to sample RF output. SAMPLE OUTPUT

→ ←

↑ ↓

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4.1.2 Front Panel Indicators

There are six LED indicator lights on the front panel which indicate the status of the KPA and provide summary fault information. Refer to Table 4-2 for description of the LED lamps:

Table 4-2. Front Panel Indicators

LED Lamp Condition

Fault Red Indicates that a fault condition exists when the LED light is

On.

Stored Fault Red Indicates that the fault has been logged and stored When

the LED light is On. The fault may, or may not, be active.

Power Status Green Indicates that power is applied to the KPA when the LED

light is On.

TX ON Yellow Indicates that the transmit function of the KPA is on when

the LED light is On. The indicator light reflects the actual condition of the transmit function.

Online Yellow Indicates that the KPA is operating on-line to transmit data.

Remote Yellow Indicates that the KPA is being operated in the remote

control mode where commands and data are transferred via an RS-485 (RS-232 is optional) serial communications link.

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4.1.3 Switching On

Prior to positioning the Prime Power Switch to On, perform the following:

1. Check to ensure that the installation is complete.

2. Verify that the KPA is connected to the proper prime power source, RF input, and RF output.

3. Switch the On/Off Prime Power Switch on the rear panel to On.

4. Verify that the cooling fans are operating, and that the POWER ON LED STATUS indicator light is On.

5. After the PRIME POWER is switched on, the STATUS indicators should be as follows:

POWER ON ON TRANSMIT OFF REMOTE ON ON LINE ON FAULT OFF STORED FAULT OFF

After the AC power is switched on and prior to pressing the buttons on the keypad, the LCD display message should read as follows:

KPAXXX-4045-I

SW VER X.XX SN4045 XXXX

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4.2 Operation

Local control of the unit is controlled by operator input commands initiated through the six button keypad on the front panel. The keypad is the local operator’s interface to control, configure and monitor the status of the KPA. Operator inputs and commands entered into the keypad are displayed by the front panel, 24-character, 2-line LCD display.

There are five operating functions:

• Configuration

• Monitor Status

• Current Faults

• Stored Faults

• Utility Functions

Flow charts for selecting the commands, operating menus, and data inputs are shown in Figure 4-1 through Figure 4-6.

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Select

CONFIG MONITOR CURRENT STORED UTILITY

CONFIG

ATTENUATION ENTRY FAULT REDUNDANCY PRIORITY OPERATING MODE SSPA #1

MONITOR

+12V 28V AMPLIFIER FORWARD RF FET

CURRENT

POWER FAULTS 28VOLTS AMPLIFIER M&C PROCESSOR

STORED FAULTS

TOTAL FAULTS STORED CLEAR ALL STORED FAULTS STORED FAULTS

ATTENUATION

AMPLIER ON/ MUTE OFF

REDUNDANCY

SSPA #/ BU

OPERATING MODE

MANUAL

SSPA # 1

OFFSET/ACTIVATE

UTILITY

TIME/DATE SERIAL MODE SERIAL PORT DATA DISPLAY CONTRAST FORWARD REVERSE LAMP TEST

SERIAL MODE

ADDR=XXX-BAUD=YYY-P=ZZZ

SERIAL PORT DATA

7-DATA, -2-STOP, -PARITY-

FORWARD

OFFSET +0.0 dBm

REVERSE

OFFSET +0.0 dBm

PRINCIPLE MENU TREE

Figure 4-1. Menu Tree

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4.2.1 KPA Commands

When the prime power is turned On, the LCD display will contain a message indicating the KPA model number and the version number of the firmware installed in the KPA.

To select a Command Function press the <ENT> button on the keypad. The LCD display will indicate:

SELECT

CONFIGURATION MENU

This will provide the local operator access to the Command Function Menus, which is the top level structure to start the selection of Command Function Menus to input into the KPA.

To sequence to the next Command Function Menu press a ↓ or ↑ arrow button on the keypad. The KPA will step to the next Command Function Menu each time a ↓ or ↑ arrow button is pressed. The current Command Function Menu will be displayed on the LCD display. The Command Function Menus are shown in Figure 4-1.

To select a specific Command Function Menu press the <ENT> keypad button. If a function is selected in error, press the clear <CLR> button which will return the KPA to the main command menus to allow the selection of another function. Any one of the five Command Function Menus can be selected using this procedure.

Once a Command Function has been selected, use the → or ← arrow key-pad buttons to sequence through the Operating Mode Commands. Each of the modes will be displayed on the LCD display. A specific operating mode is selected by pressing the <ENT> button. If a mode is selected in error, press the clear <CLR> button which will return the KPA to the operating menus to allow the selection of another mode.

When an operating mode is selected, a parameter or a digit within the parameter will be flashing on the LCD display. Use the → and ← arrows buttons to sequence through the parameters or digits to select the next parameter or digit. A specific parameter or value is selected by pressing the <ENT> button. If a parameter or value is selected in error, press the <CLR> button which will return the KPA to the original parameter or value to allow another selection.

After selecting a parameter or digit, use the ↓ or ↑ arrow buttons to select the next parameter, or to increment or decrement the value of a digit. A specific new parameter or new value is selected by pressing the <ENT> button. If a parameter or value is selected in error, press the <CLR> button which will return the KPA to the original parameter or value to allow another selection.

Each time the clear ("CLR") button is pressed, the KPA will return to the menu level prior to the last "ENT" command.

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4.2.1.1 SELECT: CONFIGURATION MENU

SELECT: CONFIGURATION MENU: ATTENUATION

ATTENUATION-=-10.00-Db-AMPLIFIER=-ON--MUTE=-OFF

The default setting is 10.00 dB.

Attenuation (ATTN): Amplifier Control supply voltage to RF FETS. The default mode is On

Mute Provide KPA mute control. The default is OFF.

Input and displays the KPA attenuation setting which is selected between

0.00 to 20.00 in 0.25 dB steps.

For KPA-020IN Only: SELECT: CONFIGURATION MENU: AMPLIFIER

AMPLIFIER

Amplifier Control supply voltage to RF FETS. The Amplifier display is either ON, MUTE, or

OFF. The default mode is ON.

Mute Provide KPA MUTE control. The default is OFF.

SELECT: CONFIGURATION MENU: ENTRY MODE

---ENTRY—MODE-=-REMOTE

------------------------

The Entry Mode is Local or Remote. The default is Local.

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SELECT: CONFIGURATION MENU: FAULT RECOVERY

-FAULT-RECOVERY:-MANUAL-

------------------------

Fault Recovery is MANUAL or AUTO. The default is AUTO.

SELECT: CONFIGURATION MENU: REDUNDANCY CONFIGURATION

-REDUNDANCY-CONFIG?-ON—

--SSP-#-BU—1:02—P=1--

This menu window provides indication of the operating mode (i.e. standalone or redundancy).

• Priority SSPA

• Operating Mode

• Gain OFFSET/Forced Backup

• Active Backup

SELECT: CONFIGURATION MENU: REDUNDANCY CONFIGURATION: PRIORITY

-----PRIORITY-SSPA:-----

----------#1------------

Provides selection of priority KPA in 1:2 redundancy systems. Always 1 in 1:1 redundancy systems.

SELECT: CONFIGURATION MENU: REDUNDANCY CONFIGURATION: OPERATING MODE

----OPERATING-MODE:-----

---------MANUAL---------

Provides selection of either AUTO or MANUAL operating Mode in redundancy systems.

Note: Window not displayed when Redundancy is Off.

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SELECT: CONFIGURATION MENU: REDUNDANCY CONFIGURATION: SSPA #1

SSPA-#1-OFFSET=+-0.00-dB

-ACTIVATE-BACKUP:-NO----

Note: Window will not display when redundancy is Off.

Gain OFFSET/Forced Backup - Gain offset: Provides for ± 7.0 dB offset to be entered for individual KPA’s in redundancy systems for Gain Equalization.

Activate – Provides ONLINE/OFFLINE control when manual mode is

selected.

4.2.1.2 SELECT: MONITOR STATUS MENU

---------SELECT---------

--MONITOR-STATUS-MENU---

Monitors and displays the status of:

• All SSPA Power Supplies

• SSPA Internal Temperature

• RF Output Power Level

• For KPA-040 Only: RF FET (Q1 through Q14)

• For KPA-020IN/080/100: RF FET (Q1 through Q27)

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For KPA-080/100:

SELECT: MONITOR STATUS MENU

---------SELECT---------

--MONITOR-STATUS-MENU---

SELECT: MONITOR STATUS MENU: +12

+12=+12.2-----12V=-12.0

--VCC=4.9------5V=-4.9--

SELECT: MONITOR STATUS MENU: +12V

----28-VDC-PS-=-27.9 9VPS1=9.1 9VPS2=9.0

SELECT: MONITOR STATUS MENU: 28VDC

----28-VDC-PS-=-27.9 9VPS1=9.1 9VPS2=9.0

SELECT: MONITOR STATUS MENU: AMPLIFIER

--AMPLIFIER-TEMP=+44C---

------------------------

SELECT: MONITOR STATUS MENU: FORWARD

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FORWARD-RF-PWR:- 53.0-DBM REVERSE-RF-PWR:-<26.2-DBM

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SELECT: MONITOR STATUS MENU: RF FET

--RF-FET----Q1-=-XXXmA

--RF-FET----Q2-=-XXXmA

--RF-FET----Q3-=-X.X-AMPS

--RF-FET----Q4-=-X.X-AMPS

--RF-FET----Q5-=-X.X-AMPS

--RF-FET----Q6-=-X.X-AMPS

--RF-FET----QX-=-X.X-AMPS

--RF-FET----Q26-=-X.X-AMPS

--RF-FET----Q27-=-X.X-AMPS

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4.2.1.3 Current Faults Menu

---------SELECT---------

--CURRENT-FAULTS-MENU---

Displays the status of the current fault conditions. The LCD display will indicate “FT” when a fault condition exists. The display will indicate “OK” when a fault has not occurred.

KPA-020IN Only:

SELECT: CURRENT FAULTS: POWER FAULTS

Power–Faults:----+12V=OK

-12V=OK-VCC=OK---5V=OK-

-----28-VDC-PS-=-OK-----

------9-VDC-PS-=-OK-----

Displays the DC voltage power supply faults. The DC voltage displayed are:

• +12 VDC

• -12 VDC

• VCC

• -5 VDC

• +28 VDC

• +9 VDC

SELECT: CURRENT FAULTS: SSPA TEMPERATURE FAULT

Displays status of both FAN #1 and FAN #2.

Fan Faults

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KPA-040/-080/-100 ONLY:

SELECT: CURRENT FAULTS: POWER FAULTS

Power–Faults:----+12V=OK

-12V=OK-VCC=OK---5V=OK-

-----28-VDC-PS-=-OK-----

------9-VDC-PS-=-OK-----

Displays the DC voltage power supply faults. The DC voltage displayed are:

• +12 VDC

• -12 VDC

• VCC

• -5 VDC

• +28 VDC

• +9 VDC

SELECT: CURRENT FAULTS: AMPLIFIER

---AMPLIFIER-TEMP-=-OK=-

-FAN-1-=-OK-FAN-2-=-OK-

A temperature fault is indicated if the unit is ≤ -20°C (≤ -4°F) or ≥ 85°C (≥ 185°F). This creates a summary fault and will cause the unit to mute itself and switchover to the backup unit. However, the 9V supply to the FET transistors will remain on until the unit reaches the termal shutdown temperature of ≥ 90°C (194°F). For protection reasons, the unit will shutdown the 9V supply to the power transistors at temperatures ≥ 90°C (194°F).

Displays an KPA temperature fault condition.

Displays status of Fan #1 and Fan #2.

--M&C-PROCESSORS-=-OK---

------------------------

Status only.

SSPA Over Temperature Fault Fan Faults M&C Processors

Displays a SSPA temperature fault condition. Displays status of both FAN #1 and FAN #2. Displays M&C fault condition.

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4.2.1.4 SELECT: STORED FAULTS MENU

The KPA displays a total of 100 faults with a date/time stamped and stored in memory as they occur. The stored faults remain in memory until a Clear commanad is entered.

SELECT: STORED FAULTS MENU: TOTAL STORED FAULTS

TOTAL-FAULTS-STORED: 100 LAST-19:20:05---02/15/95

Displays the total number of faults stored. The most recent fault stored is displayed on the LCD display.

SELECT: STORED FAULTS MENU: CLEAR ALL STORED FAULTS

----CLEAR-ALL-STORED----

------FAULTS?-NO--------

Displays the total number of faults stored. The most recent fault stored is displayed on the LCD display.

SELECT: STORED FAULTS MENU: DISPLAY STORED FAULTS

ST-FAULT-XX-----19:20:05 OK-FINE-LOCK----02/15/95

The local operator can sequence through the stored faults starting with the most recent fault. The Fault number, time, description, and date are displayed on the LCD display.

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4.2.1.5 SELECT: UTILITY FUNCTIONS MENU

---------SELECT---------

--UTILITY-FUNCTION-MENU--

The local operator can input commands to the following Utility Functions Menu which are displayed on the LCD display.

SELECT: UTILITY FUNCTIONS MENU: TIME/DATE

----TIME:-10:20:05Am----

-----date—09/15/94------

Military time is displayed in Hours, Minutes, and Seconds. The date is displayed in Month, Day, and Year.

SELECT: UTILITY FUNCTIONS MENU: SERIAL MODE

---SERIAL-MODE=RS232C--ADDR=XXX-BAUD=YYYY-p=ZZ

Communications Link.

Serial Interface RS-232, RS-485(2-Wire), RS-485(4-Wire) Physical Address The default address starts from 001. Baud (Rate) The default baud rate is 9600. Parity Even (EV) is the default.

Odd (OD) can be selected. NA appears when the 8, N, 1 Stop Bit, with No Parity.

Note: This can only be changed via the front panel menu system.

SELECT: UTILITY FUNCTIONS MENU: SERIAL PORT DATA

SERIAL-PORT-DATA-FORMAT=

-7-DATA,-2-STOP,-PARITY-

The default is 7 Data, 2 Stop Bits, with Parity. An optional format is 8 Data, 1 Stop Bit, with Parity.

Note: This can only be changed via the fron panel menu system.

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SELECT: UTILITY FUNCTIONS MENU: DISPLAY CONTRAST

-DISPLAY-CONTRAST-=XX—

DISPLAY-BRIGHTNESS-=-XX-

The default is 15, with values range of 0 to 30.

Brightness default is 15 with values ranging from 0 to 30.

SELECT: UTILITY FUNCTIONS MENU: FORWARD

FORWARD –RF-POWER-MONITOR

----OFFSET-=-+0.OdBm

This function allows the operator to calibrate (fine tune) the RF Power Monitor for a specific carrier frequency. The RF Power Monitor is calbrated in the factory at the KPA center frequency. The operator can adjust (offset) the display level using this function.

SELECT: UTILITY FUNCTIONS MENU: REVERSE

REVERSE-RF-POWER-MONITOR

----OFFSET-=-+0.0dBm----

The range is within: -6.0 to +6.0 dBm, in 0.1 dBm steps.

KPA-0202IN only: SELECT: UTILITY FUNCTIONS MENU: LAMP TEST

---------LAMP TEST-------

----------OFF-----------

The default is Off.

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Notes:

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Chapter 5. Redundant

5.1 General

All Comtech EF Data KPAs are designed to operate in both stand-alone and redundant configurations. Every KPA contains the circuitry and logic necessary to perform all the functions of a backup controller in both a 1:1 and 1:2 configuration. This includes the ability to monitor and control up to two RF waveguide switch assemblies. In addition, the KPA has been designed to automatically detect whether it is in a stand-alone or redundancy system. These features greatly simplify redundancy configurations from both the cost and operational complexity standpoint.

5.2 Redundancy Operation

Configuration

Refer to Figure 2-1 for a full installation diagram of a typical redundant system.

Normal Operation

Controller Mode

Fault

Waveguide

Two control cable assemblies are required to setup either the 1:1 or a 1:2 system. Other RF coaxial cables and waveguides are required .

Incoming RF signals are routed through the primary online SSPA (1:1), or SSPA (1:2) to the system output(s) by the combination waveguide/coax switch(es).

With the backup SSPA in the controller mode, it monitors the online unit(s) for faults.

When a fault occurs in an online unit, the backup SSPA automatically configures itself with the settings of the faulted online unit. (These now active settings also incorporated any user defined offsets that may have been programmed into the backup unit.)

The position of the waveguide/coax switch also is automatically changes to oute the signal through the backup unit, thereby minimizing the loss of traffic.

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5.2.1 Control Cabling for a 1:1 System

Figure 5-1. Control Cabling of a 1:1 System

The position of the waveguide/coax switch also is automatically changed to route the signal through the backup unit, thereby minimizing the loss of traffic.

Control cable assemblies are required to set up either a 1:1 or a 1:2 system (other RF coaxial cables and waveguides are required as shown in Figure 5-1).

Figure 5-1 shows the control cabling for a 1:1 system. The redundant loop cable connecting the two KPAs together provides a number of functions.

• This cable assembly is not a straight through cable.

• The cable assembly is labeled “backup” on one end, and KPA #1 on the other end.

• The cable assembly is wired so that when connected to two KPAs, one KPA will

automatically configure itself as the Backup Controller and the other KPA will automatically configure itself as the ‘Primary KPA’.

The backup KPA communicates to the primary KPA via a serial interface also provided by this redundant loop cable assembly. This interface is used by the Backup KPA to acquire configuration information from KPA #1. In addition, this interface provides the link for virtual addressing as described in this manual.

Summary fault relay contacts also are included in this cable assembly and are used by the backup KPA as an input to its switching logic. The second cable assembly is a six-wire assembly between the backup KPA and the Waveguide Switch Assembly. Figure 5-2 shows the cabling for a 1:2 system. Note that the functionality describes for the 1:1 cable assembly is directly applicable for the 1:2 cable assembly. The only difference is that there is now a third connector daisy-chained onto the cable assembly.

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This connector is labeled KPA #2. When connected to a Comtech EF Data KPA, the KPA will automatically configure itself as Primary KPA #2.

The second control cable attaches from the Backup Unit J7 to the Waveguide switch.

5.2.2 Cabling for a 1:2 System

Figure 5-2. Control Cabling of a 1:2 System

See Figure 5-2.

Note: The functionality described for the 1:1 Redundant System applies to the 1:2 System.

The difference is that there is a third connector dasily-chained onto the cable. This connector is labled, “SSPA#2.” When connected to a Comtech EF Data SSPA, the SSPA will automatically configure itself as “Primary SSPA#2.”

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5.2.3 Gain Equalization of Redundant Units

Typical procedures to equalize the gain between the Backup Unit and the Online Unit(s) via the Gain Offset adjustment in the backup unit’s CONFIGURATION Menu are as follows:

Note: Make sure all connections are made as outlined previously in Sections 2 and 4.)

Determine the relative gain of the Backup Unit vs the Online unit(s).

Make sure the Online Unit is “online” and transmitting. This can be verified through the CONFIGURATION Menu, and the front panel LEDs.

Step Procedures

1 Apply an RF signal to the RF redundancy input isolator. Monitor the output

power level at the waveguide switch output. (Make sure not to apply too large of an input signal which will saturate the amplifiers. Also be sure to have a properly rated load to measure the output power.)

2 Adjust the input signal power level and attenuation of the Online Unit to

arrive at the desired output power level.

3 Record the output level of the Online Unit in dBm.

4 Force the backup unit to be the active path as outlined in the

CONFIGURATION Menu. Ensure the Offset Value at this point is 0.0 dBm. Record the output level in dBm of the back-up unit.

5 If the output levels are equal, no more adjustment is necessary. Otherwise

proceed as follows.

Case 1. Backup < Online unit(s).

1. Ensure the online to the difference in levels measured above.

2. With the backup unit forced to be the active unit, adjust the Offset Value in the CONFIGURATION Menu to approximately the difference measured above. This will be a (-) negative

3. Toggle between the online and backup units as being the active path by forcing and un-forcing a back-up through the back-up unit CONFIGURATION Menu settings. Ensure the output levels measured are equal. If necessary, re-adjust the Offset Value until equal levels are measured. (Note that the back-up unit total attenuation level as now indicated in the CONFIGURATION Menu will be equal to the setting of the online unit less

unit attenuation is set to a value in dB greater than or equal (≥ )

number.

the Offset Value.)

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For Example:

Online Unit Output Level Backup Unit Output Level Backup Unit Offset Value Online Attenuation Setting

AFTER TOGGLING AND ADJUSTING: Backup Offset Value New Equalized Output Level Backup Attenuation Setting

47.0 dBm

45.25 dBm

0.00 dBm

3.00 dB (must be > 1.75 dB)

-1.75 dB

47.0 dBm

1.25 dB (3+(-1.75)=1.25)

Case 2. Backup > Online unit(s).

1. With the backup unit forced to be the active unit, adjust the Offset Value in the CONFIGURATION Menu to roughly the difference measured above. This will be a (+) positive

number.

2. Toggle between the online and backup units as being the active path by forcing and un-forcing a back-up through the back-up unit CONFIGURATION Menu settings. Make sure the output levels measured are equal. If necessary, re-adjust the Offset Value until equal levels are measured. (Note that the back-up unit total attenuation level as now indicated in the CONFIGURATION Menu will be equal to the setting of the online unit plus

the Offset Value.)

For Example:

Online Unit Output Level Backup Unit Output Level Backup Unit Offset Value Online attenuation setting AFTER TOGGLING AND ADJUSTING: Backup Offset Value New Equalized Output Level Backup Attenuation Setting

= 47.00 dBm = 48.75 dBm = 0.00 dBm = 3.0 dBm

= +1.75 dB = 47.00 dBm = 4.75 dB (3+(+1.75)=4.75)

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NOTES:

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Chapter 6. Remote Control

6.1 General

The backup KPA in the redundancy subsystem automatically monitors the configuration and status for each of the primary (chained) KPAs. This information is communicated via the dedicated serial interface between the KPAs.

• If a primary KPA fails, the backup detects this event and automatically

reconfigures itself to the proper attenuation setting and positions the waveguide switch to provide minimal loss of traffic.

A result of this design is to greatly lessen the throughput requirements (i.e. polling rate) of earth station monitor and control systems. The backup KPA handles all of the time critical tasks allowing the earth station monitor and control system to focus on less intelligent subsystems.

Specification

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6.2 Electrical Interface

The remote control interface supports either RS-485 (2-wire), RS-485 (4-wire ) or RS-232. The default port is RS-485 (2-wire). Selection of the interface type is made via front panel menu selection. The three interface types are impletemented alternately through the same 9-pin connector.

RS-232

RS-485

Levels, pulse shapes and impedances conform to EIA standards for asynchronous operation.

Levels, pulse shapes and impedances conform to EIA standards.

6.3 Interface Connector

All three interface types (2-wire RS-485, 4-wire RS-485 and RS-232) are implemented alternately through the same 9-pin connector. The remote control port is a female DB-9 connector located on the rear of the KPA.

RS-232

Pin Name Function

2 TD KPA Transmit Data 3 RD KPA Receive Data 5 GND Ground 6 DSR Unit Ready. Always high. 7 RTS Request to Send (Looped to CTS) 8 CTS Clear to Send

RS-485 (2-Wire)

Pin Name Function

1 GND Ground 4 +RX/TX Signal Loop In 5 -RX/TX Signal Complement Loop In 8 +RX/TX Signal Loop Out 9 -RX/TX Signal Complement Loop Out

RS-485 (4-Wire)

Pin Name Function

1 GND Ground 4 +TX Transmit Signal 5 -TX Transmit Signal Complement 8 +RX Receive Signal 9 -RX Receive Signal Complement

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6.4 Cables

RS-232

The remote control port is configured with pin 2 as the TX data signal (TD) and pin 3 as the RX data signal. This arrangement allows straight connection (pin 2 to pin 2 and pin 3 to pin 3) between the KPA and most standard serial ports using any standard RS-232 cable (i.e. no need to swap pins 2 and 3).

RS-485

RS-485 cabling can be implemented with a single ribbon cable using IDC Mass Terminated style connectors or with discrete wires using solder-cup style connectors. A sufficient length of ribbon cable must be allowed to reach the system monitor and control computer.

RS-232

RS-485

2-wire

4-wire

The Comtech EF Data KPA does not require the hardware handshaking provided by the DSR, RTS, and CTS signals. These signals are provided for customers that are using interface terminals that require this handshaking. Most of today’s PC’s are provided with RS-232 serial ports that do not require the hardware handshaking. In these instances, the interface can be reduced to three signals; TD, RD, and GND.

Both 2-wire and 4-wire applications are supported. The 4-wire interface provides independent signal wires for each of the RX (+RX) signal and its complement (-RX) as well as the TX (+TX) signal and its complement (-TX). In the 2-wire interface, the RX signal and the TX signal (+RX/TX) share one wire and likewise the complement signals (-RX/TX) share one wire. Choice of 2-wire vs 4-wire is based on the customer’s interface equipment and the cabling between this equipment and the KPA(s).

Each signal pair (+RX/TX and –RX/TX) is provided on two pins. This is done to provide customers who are using solder-cup type DB-9 connector the ability to more easily daisy chain the signals to multiple devices while maintaining one wire per solder-cup. Customers who use IDC Mass Terminated style DB-9 connectors (Ribbon cable types) need only use three signals.

All five signals are required.

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6.5 Protocol

Refer to Table 6-1 for protocol description. Protocol is divided into six subjects:

• Transmission Mode

• Baud Rate

• Format

• Character Set

• Response Timeout

• Bus Inactivity Requirements

Table 6-1. Protocol Description

Transmission Mode

Baud Rate

Character Set

Response Timeout

Bus Inactivity Requirement

The transmission mode is half-duplex implemented in Command/Response convention. This method requires the external system monitor and control unit to initiate all communications by command and the KPA to respond with either confirmation or an error message. The confirmation may contain status information.

The default serial port Baud Rate is 9600. Baud rates of 4800, 2400, 1200, and 300 also are supported.

The character set implemented is ASCII.

A minimum of 500 milliseconds should be provided before declaring a No Reponse instance, at which time the command should be re-transmitted.

Comtech EF Data recommends that a minimum of 50 milliseconds bus inactivity be provided by the user between the receipt of a response from an addressed KPA and issuing the next command on the serial bus.

6.5.1 Format

The following parameters are the default character format:

Start Bit Parity Bit Stop Bits Data Bits

An optional character format that can be selected is:

Note: This can only be selected from the Front Panel Menu.

Parity Bit Start Bit Stop Bit Data Bits

1 1 (Selectable, Even or Odd, via the front panel menu or remote interface 2 7

0 1 1 8

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6.6 Access Methods

The KPA may be accessed directly by using a physical address or indirectly through a backup KPA in a redundant configuration using a virtual address.

6.6.1 Direct Access

KPAs may be directly accessed by the RS-232 interface or by the RS-485 interface in a buss configuration.

RS-485

RS-232

In this control network, the KPA is paralleled on a common RS-485 cable, and has a unique physical address. Only one RS-485 port is required on the system's monitor and control computer.

For RS-232 control, a direct RS-232 cable connection is made to each KPA to be accessed. If an external Monitor and Control Computer is used, one RS-232 port per KPA is required.

6.6.2 Indirect Access

KPAs in Redundancy Mode may be addressed indirectly by adding a virtual address to the backup KPA’s physical address. The virtual address corresponds to the KPA’s position in the redundant subsystem. The backup KPA recognizes the virtual address and executes the command via the dedicated serial link between itself and the targeted KPA. This addressing mode is provided to reduce cabinet wiring complexity by allowing remote access to either both KPAs (in a 1:1 redundant subsystem) or all three KPAs (in a 1:2 redundant subsystem) using a single RS-232 or RS-485 connection to the backup KPA.

Note: Due to memory limitations, virtual addressing is not

fully functional in a KPA 1:2 system. Contact the factory for specific information. Virtual addressing is fully functional in a KPA 1:1 system.

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6.7 Addressess

All KPAs are addressed in a command by the Device Address. The Device Address consists of a physical address or a physical address plus a virtual address.

6.7.1 Physical Address

Each KPA in the system must have a unique physical address regardless of the access method used. The physical address consists of a string of 1, 2 or 3 numbers from 1 to

256. The physical address is entered into a KPA via the front panel. For Direct Access, the physical address is the only address required to command a KPA. A backup KPA or a stand-alone KPA can only be accessed with a physical address.

For Example: 10 Addresses KPA whose physical address is 10.

6.7.2 Virtual Address

In order to access an KPA controlled by a backup KPA indirectly, a virtual address is required. A virtual address is appended to the physical address of the backup KPA with a “V”. The virtual address is either the number “1" or “2" corresponding to the KPA’s designation in a redundant subsystem.

For Example: 10V2 Addresses second KPA in a 1:2

redundant subsystem controlled by the backup KPA whose physical address is 10.

6.7.3 Message Structure

The structure of either a Command, Response, or Error Message is as follows:

• Start Character

• Device Address

• Command or Response

• End of Message String

6.7.4 Start Character

The Start Character begins each message:

For Example: < Start of a user Command. > Start of a KPA response.

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6.7.5 Device Address

The Device Address consists of a Physical Address. For this document DEV is used for the generic case examples.

For Example; <10 direct addressing <10V2 indirect addressing

6.7.6 Command

A Command is a variable length character string beginning with a / and containing either an instruction or an instruction and data for an KPA to act upon.

• If data is passed by command, it is appended to the instruction by an underscore( _ ).

• If data is retrieved by command, underscore follows the instruction flagging the KPA to supply data in a response.

• In this document /COM is used for the generic case examples.

For Example: <DEV/COM_xxx'cr' Sends data to an KPA.

For Example: <DEV/COM_'cr' Requests information from an

KPA.

6.8 Confirmation Response

A confirmation will change the start character, and echo the Device Address and Command. Any requested data will be appended to the Command.

For Example: >DEV/COM_xxx'cr''lf']

6.8.1 Error Response

If an KPA cannot execute a Command or detects a protocol violation, an error response is generated. An error is flagged by changing the "/" command designator in the response to a "?". Following the "?" error symbol are two characters which are unique error symbols useful for computer analysis. The two error symbols are followed by a text string explaining the error for the convenience of a human operator. For this document ER is used for the generic case examples response.

For Example: >DEV?COM ER Error Message 'cr''lf']

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6.8.2 End Of Message

End of message strings were devised in such a way that an orderly screen presentation would result when KPAs are controlled by simple ASCII terminals.

6.8.2.1 Command Ending

The end of message for a command is a carriage return. For this document 'cr' is used for the carriage return.

For Example: <DEV/COM'cr'

6.8.2.2 Response Ending

End of message for a response is a carriage return, line feed and a bracket: 'cr''lf'].

For Example: >DEV/COM'cr''lf']

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6.9 Command/Response Pairs

6.9.1 Utility Commands

Time Set Time:

Confirmation:

Retrieve Time: Confirmation:

Date Set Date:

Confirmation:

Physical Address Set Physical Address :

Confirmation:

Retrieve Physican Address: Confirmation:

Baud Rate Set Baud Rate:

Confirmation:

Retrieve Baud Rate: Confirmation:

Parity Bit Set Parity Bit:

Confirmation:

Retrieve Parity Bit: Confirmation:

LCD Contrast Set Contrast:

Confirmation:

Retrieve Contrast: Confirmation:

LCD Brightness Set Brightness:

Confirmation:

Retrieve Brightness: Confirmation:

<DEV/TIM_hh:mm:ss'cr' >DEV/TIM_hh:mm:ss 'cr'' lf']

<DEV/TIM_'cr' >DEV/TIM_hh:mm:ss 'cr'' lf']

<DEV/DAT_mm/dd/yy'cr' >DEV/DAT_mm/dd/yy/'cr'' lf']

<DEV/SPA_xxx'cr' >DEV/SPA_xxx'cr'' lf']

<DEV/SPA_'cr'

>DEV/SPA_xxx'cr'' lf'] <DEV/SBR_xxxx'cr' >DEV/SBR_xxxx'cr'' lf']

<DEV/SBR_xxxx'cr' >DEV/SBR_xxxx'cr'' lf'] <DEV/SPB_xxxx'cr' >DEV/SPB_xxxx'cr'' lf']

DEV/SPB_'cr' DEV/SPB_xxxx'cr'' lf']

<DEV/CON_xx'cr' >DEV/CON_xx'cr'' lf']

<DEV/CON_'cr' >DEV/CON_xx'cr'' lf'] <DEV/LCD_xx'cr' >DEV/LCD_xx'cr'' lf']

<DEV/LCD_'cr' >DEV/LCD_xx'cr'' lf']

Where: hh = Hour mm = Minutes ss = Seconds

Note: 24-hour military is used.

Where: mm = Month dd = Day yy = Year

Where: xxx = 1 to 255

The default physical address is 1.

Where: xxxx = 300, 1200, 2400, 4800, or 9600

The default baud rate is 9600. Where: xxxx = Odd or Even

The default parity is Even.

Where: xx = 0 to 30

The default is contrast 15. Where xx = 0 to 30

The default is contrast 15.

Lamp Test

KPA-020IN

Equipment Type Retrieve Equipment Type:

Test Lamps: Confirmation:

Lamp Test Status: Confirmation:

Confirmation:

<DEV/LAM_xxx'cr' >DEV/LAM_xxx'cr'' lf']

<DEV/LAM_'cr' >DEV/LAM_xxx'cr'' lf']

<DEV/RET_'cr' >DEV/RET_xxxxxxx yyyyy'cr'' lf']

6-9

Where: xxx = On or Off

Where: xxxxxxx = Model No. yyyyy = Software Version

Example: >DEV/RET_K080-4045-I SW_1.02

Equipment Type is a command that retrieves the model number and software version of the equipment. The information cannot be changeds by command.

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Application Identification

Local/Remote Entry mode Status

KPA-040

Application ID: Confirmation:

Retrieve ID: Confirmation:

Local/Remote Control : Confirmation:

Retrieve Local/Remote Status: Confirmation:

<DEV/AID_xxxxxxx…xxxxx'cr' >DEV/AID_'cr'xxxxxxxxxxxxxxxxxxxxxxxx'cr' xxxxxxxxxxxxxxxxxxxxxxxx'cr'' lf']

<DEV/AID_'cr' >DEV/AID_'cr'xxxxxxxxxxxxxxxxxxxxxxxx'cr' xxxxxxxxxxxxxxxxxxxxxxxx'cr'' lf'

<DEV/LRS_x'cr' >DEV/LRS_x'cr'’lf’]

<DEV/LRS_'cr' >DEV/LRS_x'cr'’lf’]

Where: XXXXXXX …XXXXX = Message, maximum 48 characters

The Application Identification (AID) command allows a free form message to be created. It is intended to identify either the satellite transponder, beam, destination or other aspects of the application that may be significant to operations. The message length corresponds to capability of the LCD and is 48 characters in total. The second line begins at character 25, therefore, blanks must be used after line 1 information in order to space to line 2. A carriage return ends the command. Trailing blanks will be generated to fill the LCD field. The AID display will alternate with the Equipment type display by use of the clear function key on the front panel. The default is “AID MESSAGE.”

Where: x= 0 for Local or 1 for Remote

6.9.2 Configuration Commands

Amplifier On/OFF Amplifier Control:

Confirmation:

Retrieve AMP Status: Confirmation:

Mute Mute Output:

Confirmation:

Retrieve Mute Status: Confirmation:

Attenuator Set Attenuator:

Confirmation:

Retrieve Attenuator: Confirmation:

<DEV/AMP_xxx'cr' >DEV/AMP_xxx'cr'' lf']

<DEV/AMP_'cr' >DEV/AMP_xxx'cr'' lf']

<DEV/MUT_xxx'cr' >DEV/MUT_xxx'cr'' lf']

<DEV/MUT_'cr' >DEV/MUT_xxx'cr'' lf']

<DEV/ATT_yy.yy'cr' >DEV/ATT_yy.yy'cr'' lf']

<DEV/ATT_'cr' >DEV/ATT_yy.yy'cr'' lf']

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Where: xxx = On or Off

The default is On.

The Comtech EF Data KPA provides the user direct control of the 9VDC supply voltage to the solid-state RF power FETs. This feature provides the ability to put the KPA into a low power consumption mode when the unit is offline.

Where: xxx = On or Off

The default is On.

The user is provider output mute control via the remote interface using this command.

Where: yy.yy = 0.0 to 20.0 dB in 0.25 steps.

The default is 10 dB.

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Auto Fault Recovery

Set Fault Recovery: Confirmation:

Retrieve Status: Confirmation:

<DEV/AFR_xxx'cr' >DEV/AFR_xxx'cr'' lf']

Where xxx = On or Off

The default is Off.

The KPA output automatically muted in the event of a detected fault. Auto Fault Recovery, if enabled, will cause the output signal to go active (unmuted) if all faults clear. If disabled, the output will remain muted even after all faults clear until a MUT_OFF command is received.

6.9.3 Mode Commands

Note : There are two modes of operation that may intersect: Redundancy Mode and Automatic Mode.

Redundancy Mode Comtech EF Data’s KPA family is designed to automatically sense and configure into redundancy mode when the

Automatic/Manual Mode

Backup Mode Initiate a Backup:

Priority Select Set Prority:

redundant loop cable is connected. Polling on the dedicated redundancy buss will not begin until the redundancy loop cable is connected. Each KPA’s designation in a redundant subsystem is determined automatically via the redundancy interface cable connected between the two (1:1 subsystem) or three (1:2 subsystem) KPAs in the redundant subsystem. Select Automatic Mode: Confirmation:

Automatic Status: Confirmation:

Confirmation:

Retrieve Backup Status: Confirmation:

Confirmation:

Retrieve Prority Status: Confirmation:

<DEV/SAM_y'cr' xxx >DEV/SAM_y'cr'' lf']

<DEV/SAM_'cr' >DEV/SAM_y'cr'' lf']

<DEV/FBU_x_y'cr' >DEV/FBU_x_y'cr'' lf']

<DEV/FBU_'cr' >DEV/FBU_zzzzz'cr'' lf']

<DEV/PRI_x'cr' >DEV/PRI_x'cr'' lf']

<DEV/PRI_'cr' >DEV/PRI_x'cr'' lf']

Where: y = A for Auto M for Manual

The default is Off.

This command provides for automatic switching by the backup KPA if both units are in the Redundancy Mode. This command is only accepted by the backup KPA. If a primary KPA is set in Manual Mode and a fault occurs, the backup KPA will log the occurrence and not act upon further information from the KPA until put into Automatic Mode.

Where: x = 1 or 2 KPA number. Y = F to force a backup N = to remove a backup zzzzz = NONE, if no backup active. ACTIVE, if an automatic backup has occurred. FORCED, if a forced backup is active.

This command allows the user to force a backup condition for mainternace and test purposes. This command must be sent to the KPA designated as the backup KPA to configure the Waveguide switch to a position such that the backup KPA is Online and the primary KPA is Offline.

Where x = 1 or 2

This command allows the user to assign prority when operating in a 1:2 redundant subsystem. This command provides arbitration in the event that both primary KPAs are faulted simulataneously.

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6.9.4 Status Commands

Configuration Status

Maintenance Status

Configuration Status: Confirmation:

Maintenance Status: Confirmation:

<DEV/RCS_'cr' >DEV/RCS_'cr' ATT_yy.yy'cr' AMP_nnn'cr' TX_nnn'cr' ONL_nnn'cr' RED_xx_y'cr' AFR_nnn'cr'

<DEV/RMS_'cr' >DEV/RMS_'cr'' lf'] V+28_xx.x'cr' V+12xx.x'cr' V-12_xx.x'cr' V+5_x.x'cr' V–5_x.x'cr' V+9_1_xx.x'cr' V+9_2_xx.x'cr' TEMP_xx'cr' FPWR_xx.x'cr' RPWR_xx.x'cr'' lf']

Where:

Attenuator Amplifier – On/Off Transmit – On/Off Online – On/Off See Note. Auto Flt Recoverty – On/Off

Notes:

1. If Redundancy is Off, xx_y = Off, else if Redundancy is On the xx field indicates the KPA designation, either BU (Backup) 01 or 02.

2. If xx is either 01 or 02 then the y field indicates the Auto/Manual status, either A if Auto or M if manual.

3. If xx field is BU, the y field indicates the pripority KPA, either 1 if KPA #1 is high priority or 2 if KPA #2 is high priority.

4. For 1:1 systems prority is always #1.

Where:

+28 VDC Supply +12 VDC Supply –12 VDC Supply +5 VDC Supply –5 VDC Supply 9 VDC Supply #1 9 VDC Supply #2 Temperature RF Forward Power (dBm) RF Reflected Power (dBm)

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FET Status

KPA-020IN

FET Status

KPA-040

FET Status

KPA-080 KPA-100

FET Status: Confirmation:

<DEV/RFS_’cr’ >DEV/RFS_’cr’ FET1_xxx’cr’ FET2_xxx’cr’ FET3_xxx’cr’ FET4_xxx’cr’ FET5_xxx’cr’ FET6_xxx’cr’ FET7_xxx’cr’ FET8_xxx’cr’ FET9_xxx’cr’’lf’]

<DEV/RFS_’cr’ >DEV/RFS_’cr’ FET1_xxx’cr’ FET2_x.x’cr’ FET3_x.x’cr’ FET4_x.x’cr’ FET5_x.x’cr’ FET6_xxx’cr’ FET7_x.x’cr’ FET8_x.x’cr’ FET9_x.x’cr’ FET10_x.x’cr’ FET11_x.x’cr’ FET12_x.x’cr’ FET13_x.x’cr’ FET14_x.x’cr’’lf’]

<DEV/RFS_’cr’ >DEV/RFS_’cr’ FET1_xxx’cr’ FET2_x.x’cr’ FET3_x.x’cr’ FET4_x.x’cr’ FET5_x.x’cr’ FET6_x.x’cr’ FET7_x.x’cr’ FET8_x.x’cr’ FET9_x.x’cr’ FET10_x.x’cr’ FET11_x.x’cr’ FET12_x.x’cr’ FET13_x.x’cr’ FET14_x.x’cr’ FET15_x.x’cr’ FET16_x.x’cr’ FET17_x.x’cr’ FET18_xxx’cr’ FET19_x.x’cr’ FET20_x.x’cr’ FET21_x.x’cr’ FET22_x.x’cr’ FET23_x.x’cr’ FET24_x.x’cr’ FET25_x.x’cr’ FET26_x.x’cr’ FET27_x..x’cr’’lf’]

Where:

FET1 current in milliamps FET2 current in milliamps FET3 current in amps FET4 current in amps FET5 current in amps FET6 current in amps FET7 current in amps FET8 current in amps FET9 current in amps

Where :

FET1 current in milliamps FET2 current in amps FET3 current in amps FET4 current in amps FET5 current in amps FET6 current in milliamps FET7 current in amps FET8 current in amps FET9 current in amps FET10 current in amps FET11 current in amps FET12 current in amps FET13 current in amps FET14 current in amps

Where :

FET1 current in milliamps FET2 current in milliamps FET3 current in amps FET4 current in amps FET5 current in amps FET6 current in amps FET7 current in amps FET8 current in amps FET9 current in amps FET10 current in amps FET11 current in amps FET12 current in amps FET13 current in amps FET14 current in amps FET15 current in amps FET16 current in amps FET17 current in amps FET18 current in amps FET19 current in amps FET20 current in amps FET21 current in amps FET22 current in amps FET23 current in amps FET24 current in amps FET25 current in amps FET26 current in amps FET27 current in amps

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Utility Status Utility Status:

Alarm Status

KPA-020IN

Alarm Status

KPA-040

Confirmation:

Alarm Status: Confitmation:

<DEV/RUS_’cr’ >DEV/RUS_’cr’ COMM_aaaaaa'cr' ADD_xxx'cr' BR_nnnn'cr' PAR_nn'cr' CON_xx'cr' LCD_xx'cr'' lf']

<DEV/RAS_'cr' >DEV/RAS_'cr' +28_xx'cr' +12_xx'cr' –12_xx'cr' +5_xx'cr' –5_xx'cr' +9_xx'cr' TEMP_xx'cr' FAN1_xx'cr' FAN2_xx'cr'' lf']

<DEV/RAS_'cr' >DEV/RAS_'cr' +28_xx'cr' +12_xx'cr' –12_xx'cr' +5_xx'cr' –5_xx'cr' +9_xx'cr' TEMP_xx'cr' SHTD_xx'cr' FAN1_xx'cr' FAN2_xx'cr' PROC_xx’cr’' lf']

Where:

RS-232 or RS-485 Address (001 to 255) Baud Rate (300 to 9600) Parity (OD or EV) LCD Contrast (0 to 30) LCD Brightness (0 to 30)

Where:

+28 VDC Fault +12 VDC Fault

-12 VDC Fault

+ 5 VDC Fault – 5 VDC Fault + 9_xx'cr' TEMP_xx'cr' FAN1_xx'cr' FAN2_xx'cr'' lf']

Where: xx = OK or FT

+28 VDC Fault

+12 VDC Fault

-12 VDC Fault

+ 5 VDC Fault – 5 VDC Fault +9 VDC Fault TEMP_xx'cr' Over Temperature Shutdown FAN1 Fault FAN2 Fault Processor Fault

Note: A temperature fault is indicated if the unit is ≤ -12°C or ≥ +80°C. This creates a summary fault and will cause the unit to mute itself and switchover to the back-up unit. However, the 9V supply to the FET transistors will remain on until the unit reaches the thermal shutdown temperature of ≥ 89°C. For protection reasons, the unit will shutdown the 9V supply to the power transistors at temperatures ≥ +89°C.

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Alarm Status

KPA-080 KPA-100

Summary Alarm Status

Terminal Status Change

Alarm Status: Confitmation:

Summary Alarm: Confirmation:

Configuration Status: Confirmation:

<DEV/RAS_'cr' >DEV/RAS_'cr' +28_xx'cr' +12_xx'cr' –12_xx'cr' +5_xx'cr' –5_xx'cr' +9_1_xx'cr' +9_2_xx'cr' TEMP_xx'cr' SHTD_xx'cr' FAN1_xx'cr' FAN2_xx'cr'' lf']

<DEV/SAS_'cr' >DEV/SAS_xx'cr'' lf']

<DEV/TSC_'cr' >DEV/TSC_nnn'cr'' lf']

Where: xx = OK or FT

+28 VDC Fault

+12 VDC Fault

-12 VDC Fault

+ 5 VDC Fault – 5 VDC Fault + 9_1_xx'cr' + 9_2_xx'cr' TEMP_xx'cr' Over Temperature Shutdown FAN1_xx'cr' FAN2_xx'cr'' lf']

Note: A temperature fault is indicated if the unit is ≤ -20°C or ≥ 85°C. This creates a summary fault and will cause the unit to mute itself and switchover to the back-up unit. However, the 9V supply to the FET transistors will remain on until the unit reaches the thermal shutdown temperature of ≥ 90°C. For protection reasons, the unit will shutdown the 9V supply to the power transistors at temperatures at ≥ 90°C.

Where: xx = Ok or FT

Summary Alarm is set to Fault (FT), if any

of items in Alarm Status are faulted.

Where: nnn = Yes or No

The TSC_ command can be used to

determine if the status of the terminal has

changed since it was last polled. If any of

the parameters listed in the RCS or RUS

commands have changed as a result of

user oprerations or if any new fault

conditions occur the TSC_ command will

return YES. The TSC_ command will then

continue to return YES until any of the

following commands are received: RCS_,

RUS_, RAS_, PACRCS_, PACRUS_, or

PACRAS_.

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Ku-Band Solid-State Power Amplifier Revision 0 Remote Control MN/KPA.IOM

Packed Configuration Status

Packed Maintenance Status

Packed FET Status

KPA-020IN

Configuration Status: Confirmation:

Packed Maint Status: Confirmation:

Packed FET Status: Confirmation:

<DEV/PACRCS_'cr' >DEV/PACRCS_aabcdeffgh'cr'' lf']

<DEV/PACRMS_'cr' >DEV/PACRMS_aabbccddeeffgghhhiiijjj'cr'' lf']

<DEV/PACRFS_'cr' >DEV/PACRFS_aabbccddeeffgghhii’cr'' lf']

Where:

aa = # of 0.25 dB steps in Hex above 0dB

(0 to 120)

b = 1 = Amplifier is On; 0 = Off

c = 1 = TX On; 0 = Off

d = 1 = unit ONLINE; 0 = OFFLINE

e = 1 = Redundancy On; 0 = Redundancy

Off

ff = KPA No. = BU = 01 or 02 ( e = 0, ff =

00)

g = A = Auto Mode; M = Manual Mode

h = 1 = Auto Recovery enabled; 0 if

disabled

Where:

aa = + 28 VDC supply, 100mV per count

above 10.0V in Hex

bb = + 12 VDC supply scaled 100 mV per

count in Hex

cc = - 12 VDC supply scaled 100mV per

count in Hex

dd = + 5 VDC supply scaled –100mV per

countin Hex

ee = - 5 VDC supply scaled –100mV per

count in Hex

ff = + 9 VDC supply #1 scaled 100 mV per

count in Hex

gg = + 9 VDC supply #2 scaled 100mV per

count in Hex

hhh = Signed temperature in degrees C

(-10 to +95)

iii = RF forward power, 0.1 dBm steps

above 20.0 dBm in Hex

jjj = RF reverse power, 0.1 dBm steps

above 15.0 dBm in Hex

Where:

aa = FET1 current in Hex, formular:

FET1 = (aa) mamps

bb = FET2 current in Hex, formular:

FET2 = (aa) mamps

cc = FET3 current in Hex, scaled 100mV

per count

dd = FET4 current in Hex, scaled

100mV per count

ee = FET5 current in Hex, scaled 100mV

per count

ff = FET6 current in Hex, scaled 100mV

per count

gg = FET7 current in Hex, scaled

100mV per count

hh = FET8 current in Hex, scaled

100mV per count

ii = FET9 current in Hex, scaled 100mV

per count

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Ku-Band Solid-State Power Amplifier Revision 0 Remote Control MN/KPA.IOM

Packed FET Status

KPA-040

Packed FET Status: Confirmation:

<DEV/PACRFS_'cr' >DEV/PACRFS_aabbccddeeffgghhiijjkk llmmnn'cr'' lf']

Where: aa = FET1 current in Hex, formular: FET1 = (aa * 3) mamps bb = FET2 current in Hex, scaled 100mV per count cc = FET3 current in Hex, scaled 100mV per count dd = FET4 current in Hex, scaled 100mV per count ee = FET5 current in Hex, scaled 100mV per count ff = FET6 current in Hex, scaled 100mV per count gg = FET7 current in Hex, scaled 100mV per count hh = FET8 current in Hex, scaled 100mV per count ii = FET9 current in Hex, scaled 100mV per count jj = FET10 current in Hex, scaled 100mV per count kk = FET11 current in Hex, scaled 100mV per count ll = FET12 current in Hex, scaled 100mV per count mm = FET13 current in Hex, scaled 100mV per count nn = FET14 current in Hex, scaled 100mV per count

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Ku-Band Solid-State Power Amplifier Revision 0 Remote Control MN/KPA.IOM

Packed FET Status

KPA-080 KPA-100

Packed FET Status: Confirmation:

<DEV/PACRFS_'cr' >DEV/PACRFS_aabbccddeeffgghhiijjkkllmm nnooppqqrrssttuuvvwwxxyyzzal'cr'' lf']

Where: aa = FET1 current in Hex, formular: FET1 = (aa * 3) mamps bb = FET2 current in Hex, formular: FET2 = (aa * 3) mamps cc = FET3 current in Hex, scaled 100mV per count dd = FET4 current in Hex, scaled 100mV per count ee = FET5 current in Hex, scaled 100mV per count ff = FET6 current in Hex, scaled 100mV per count gg = FET7 current in Hex, scaled 100mV per count hh = FET8 current in Hex, scaled 100mV per count ii = FET9 current in Hex, scaled 100mV per count jj = FET10 current in Hex, scaled 100mV per count kk = FET11 current in Hex, scaled 100mV per count ll = FET12 current in Hex, scaled 100mV per count mm = FET13 current in Hex, scaled 100mV per count nn = FET14 current in Hex, scaled 100mV per count oo = FET15 current in Hex, scaled 100mV per count pp = FET16 current in Hex, scaled 100mV per count qq = FET17 current in Hex, scaled 100mV per count rr = FET18 current in Hex, scaled 100mV per count ss = FET19 current in Hex, scaled 100mV per count tt = FET20 current in Hex, scaled 100mV per count uu = FET21 current in Hex, scaled 100mV per count vv = FET22 current in Hex, scaled 100mV per count ww = FET23 current in Hex, scaled 100mV per count xx = FET24 current in Hex, scaled 100mV per count yy = FET25 current in Hex, scaled 100mV per count zz = FET26 current in Hex, scaled 100mV per count a1 = FET27 current in Hex, scaled 100mV per count

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Ku-Band Solid-State Power Amplifier Revision 0 Remote Control MN/KPA.IOM

Packed Utility Status

Packed Alarm Status

Packed Utility Status: Confirmation:

Packed Alarm Status: Confirmation:

<DEV/PACRUS_'cr' >DEV/PACRUS_abbcdeeff'cr'' lf']

<DEV/PACRAS_'cr' >DEV/PACRAS_abcdefghijkl'cr'' lf']

Where: a = COM1 Mode; 0 =RS-232, 1 = RS-485-2; 2 = RS-485-4 bb = Address in Hex (01 to FF) c = 0 if Baud Rate = 9600 1 if Baud Rate = 4800 2 if Baud Rate = 2400 3 if Baud Rate = 1200 4 if Baud Rate = 300 d = 0 if Parity Even, 1 if Parity Odd ee = LCD Contrast (0 to 30) ff = LCD Brightness (0 to 30)

Where: a = 1 if +28 Fault, else 0 b = 1 if +12 Fault, else 0 c = 1 if –12 Fault, else 0 d = 1 if + 5 Fault, else 0 e = 1 if – 5 Fault, else 0 f = 1 if + 9 PS#1 Fault, else 0 g = 1 if + 9 PS#2 Fault, else 0 h = 1 if TEMP Fault, else 0 I = 1 if SHTD Fault, else 0 j = 1 if FAN1 Fault, else 0 k = 1 if FAN2 Fault , else 0 l = 1 if PROC Fault, else 0

6.9.5 Stored Alarms

The 100 alarms are date/time stamped and stored in memory as they occur. The alarm entry also is updated with its date/time of clearance. The entry remains in memory until it is removed by command.

Total Stored Alarms

Clear All Stored Alarms

List All Alarms List All Alarms:

Retrieve Total Alarms: Confirmation:

Clear Alarms: Confirmation:

Confirmation:

<DEV/TSA_'cr' >DEV /TSATOTAL :nnn'cr' LAST:hh:mm:ss mm/dd/yy'cr'' lf']

<DEV/CAA_YES'cr' >DEV/CAA_CLEARED'cr'' lf']

<DEV/LAA_'cr' >DEV/LAA'cr' xxx yyyyyyyyyyy hh:mm:ss mm /dd/yy'cr' xxx yyyyyyyyyyy hh:mm:ss mm/dd/yy'cr' xxx yyyyyyyyyyy hh:mm:ss mm /dd/yy'cr' xxx yyyyyyyyyyy hh:mm:ss mm/dd/yy'cr' xxx yyyyyyyyyyy hh:mm:ss mm /dd/yy'cr' xxx yyyyyyyyyyy hh:mm:ss mm/dd/yy'cr'' lf']

This command retrieves the total number

of stored alarms and the time and date of

the most recent alarm.

Where :

xxx = stored fault number

yyyyyyyyyyy = fault description

hh:mm:ss = fault time

mm/dd/yy = fault date

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Ku-Band Solid-State Power Amplifier Revision 0 Remote Control MN/KPA.IOM

6.9.6 Error Processing

The following Error Responses may be generated by any command instead of a confirmation.

General Error Message:

>DEV?COM CU COMMAND UNRECOGNIZED'cr'' lf'] >DEV?COM IP INVALID PARAMETER'cr'' lf'] >DEV?COM PE PARITY ERROR'cr'' lf']

6.9.7 Configuration Errors

The following Error Responses may be generated by configuration commands.

Configuration Error Message:

>DEV?COM LO DEVICE IN LOCAL MODE'cr'' lf']

6.9.8 Time-Outs

A time-out should be assumed if there is no response in 1.0 seconds. The station monitor and control computer should try at least three times. Possible sources of time-outs are listed in Table 6-2:

Table 6-2. Possible Time-Out Sources

Incorrect Device Address Faulty Cable Faulty Connector I/O fault on remote interface I/O fault on monitor and control computer

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Ku-Band Solid-State Power Amplifier Revision 0 Remote Control MN/KPA.IOM

6.10 Command Summaries

Table 6-3 and Table 6-4 summarize the remote control commands and commands supported by virtual addressing mode.

Table 6-3. Remote Control Summary

Commands Display Reference

Utility

Set Time <DEV/TIM_hh:mm:ss'cr' 6.9.1 Set Date <DEV/DAT_mm/dd/yy'cr' 6.9.1 Set Physical Address <DEV/SPA_xxx'cr' 6.9.1 Set Baud Rate <DEV/SBR_xxxx'cr' 6.9.1 Set Parity Rate <DEV/SPB_xxxx'cr' 6.9.1 Set LCD Contrast <DEV/CON_xx'cr' 6.9.1 Set LCD Brightness <DEV/LCD_xx'cr' 6.9.1 Lamp Test (KPA-020IN) <DEV/LAM_xxx’cr’ 6.9.1 Retrieve Equipment type <DEV/RET_'cr' 6.9.1 Set Application ID Message <DEV/AID_xxx…xxx'cr' 6.9.1 Set Local/Remote Mode (KPA-040)

Set Amplifier On/OFF <DEV/AMP_xxx'cr' 6.9.2 Mute/Unmute <DEV/MUT_xxx'cr' 6.9.2 Set Attenuation <DEV/ATT_xx.xx'cr' 6.9.2 Select Auto Fault Recovery <MDEV/AFR_xxx'cr' 6.9.2

Select Auto/Manual Mode <DEV/SAM_y'cr' 6.9.3 Forced Backup Mode <DEV/FBU_x_y'cr' 6.9.3 Select Priority <DEV/PRI_x'cr' 6.9.3

Retrieve Configuration Status <DEV/RCS_'cr' 6.9.4 Retrieve Maintenance <DEV/RMS_'cr' 6.9.4 Retrieve FET Status <DEV/RFS_'cr' 6.9.4 Retrieve Utility Status <DEV/RUS_'cr' 6.9.4 Retrieve Alarm Status <DEV/RAS_'cr' 6.9.4 Summary Alarm Status <DEV/SAS_'cr' 6.9.4 Terminal Status Change <DEV/TSC_'cr' 6.9.4 Packed Configuration Status <DEV/PACRCS_'cr' 6.9.4 Packed Maintenance Status <DEV/PACRMS_'cr' 6.9.4 Packed FET Status <DEV/PACRFS_'cr' 6.9.4 Packed Utility Status <DEV/PACRUS_'cr' 6.9.4 Packed Alarm Status <DEV/PACRAS_'cr' 6.9.4

Retrieve Total Stored Alarms <DEV/TSA_'cr' 6.9.5 Clear All Stored Alarms <DEV/CAA_YES'cr' 6.9.5 List All Stored Alarms <DEV/LAA_'cr' 6.9.5

<DEV/LRS_x'cr' 6.9.1

Configuration Commands

Redundancy Mode Commands

Status Commands

Stored Alarm Commands

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Ku-Band Solid-State Power Amplifier Revision 0 Remote Control MN/KPA.IOM

Table 6-4. Commands Supported by Virtual Addressing Mode

Commands Display Reference

Utility Commands

Retrieve Equipment Type <DEV/RET_'cr' 6.9.1

Configuration Commands

Set Amplifier On/Off <DEV/AMP_xxx'cr' 6.9.2 Mute/Unmute <DEV/MUT_xxx'cr' 6.9.2 Set Attenuation <DEV/ATT_xx.xx'cr' 6.9.2 Select Auto Fault Recovery <DEV/AFR_xxx'cr' 6.9.2

Status Commands

Retrieve Configuration Status <DEV/RCS_'cr' 6.9.4 Retrieve Maintenance Status <DEV/RMS_'cr' 6.9.4 Retrieve FET Status <DEV/RFS_'cr' 6.9.4 Retrieve Utility Status <DEV/RUS_'cr' 6.9.4 Retrieve Alarm Status <DEV/RAS_'cr' 6.9.4 Summary Alarm Status <DEV/SAS_'cr' 6.9.4 Terminal Status Change <DEV/TSC_'cr' 6.9.4 Packed Configuration Status <DEV/PACRCS_'cr' 6.9.4 Packed Maintenance Status <DEV/PACRMS_'cr' 6.9.4 Packed FET Status <DEV/PACRFS_'cr' 6.9.4 Packed Utility Status <DEV/PACRUS_'cr' 6.9.4 Packed Alarm Status <DEV/PACRAS_'cr' 6.9.4

6-22

Chapter 7. Maintenance and

7.1 General

Refer to the block diagram in Section 1 for interconnecting cables and general troubleshooting help.

Troubleshooting

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Ku-Band Solid-State Power Amplifier Revision 0 Maintenance and Troubleshooting MN/KPA.IOM

7.2 Maintenance Testing

For KPA080: The KPA is a Ku-Band KPA with an RF output level of +48.5 dBm at 1 dB compression.

For KPA100: The 1 dB compression.

KPA is a Ku-Band KPA with an RF output level of +49.5 dBm at

7.2.1 Test Point Samples

The RF input and output can be monitored at the RF Sample Test Points on the front panel. Type N connectors are provided. The sample RF input level is -20 dBc nominal, and the RF output level is -40 dBc nominal. Actual measured data for these sample ports is located on the front panel.

7.3 Troubleshooting

Refer to Table 7-1.

KPA operating problems can be identified by first observing the status indicators on the

front panel. When a fault condition is indicated, the specific fault, or faults, can be identified in the Current Faults Function Menu (Chapter 4) which is accessed through the local operation keypad and displayed on the LCD display located on the front panel. The status of

KPA functions is displayed in the Monitor Status Functions Menu.

Refer to Section 4, Operation, for a description of the KPA command functions; also, check the status of the mute condition in the configuration menu (i.e.: Mute = “On” means that the amplifier will be muted.)

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Ku-Band Solid-State Power Amplifier Revision 0 Maintenance and Troubleshooting MN/KPA.IOM

Table 7-1. Troubleshooting

Symptom Possible Cause Solution

Unit does not turn On (No display, No front panel lights, No fans)

Fan(s) do not turn On. Faulty wiring or bad

Firmware not properly

Faulty 28V power supply. Check the output voltage of the 28V power

Failed fan or faulty control

Display not turning On, Missing text, or Incorrect backlighting.

1. Check power cord connections.

2. Faulty wiring to 28V power supply.

3. 28V power supply fault.

connections.

seated.

circuitry.

1. Firmware not properly seated.

2. Faulty wiring or bad connections.

3. Failed display or display control card.

4. circuitry on AS/0200 or AS/0206 PCB.

1. Ensure power cord is connected.

2. With input power cord disconnected, check wiring and connections to 28V power supply. Reconnect power cord.

3. Check output of 28 VDC power supply. Remove and replace 28V power supply.

At power-up, the fans are sequenced on. In Normal operation, the second fan does not turn on until 3 seconds (approximately) after the first fan.

1. Check AS/0206 PCB to ensure the connections at P4 and P5 are not loose.

2. Check cable connection at the fans. There should be 24 VDC (approximately) between the two pins at the fan.

3. Check cable wiring if fautly or return to factory for repair.

Fans are microprocessor controlled and monitored.

1. Ensure U11 and U12 on AS/0200 are properly seated.

2. Remove and replace AS/0200 PCB if damaged.

supply.

1. Either via the front panel Monitort menu or using a voltmeter.

2. Ensure that 28V is present.

Fan defective.

1. Replace fan.

2. Return to factory for repair re replacement.

1. Ensure U11 and U12 on AS/0200 are properly seated.

2. Ensure good cable connections from M&C cards AS/0200 and AS/0206 to display card located behind front panel. Check cable wiring and if required return cables to factory.

3. Return to factory for repair.

4. Return to factory for repair.

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Ku-Band Solid-State Power Amplifier Revision 0 Maintenance and Troubleshooting MN/KPA.IOM

Table 7-1. Troubleshooting (Continued)

Symptom Possible Cause Solution

No RF output or ≤ output level.

Failed KPA amplifier module.

No remote control communication

1. Mute fuction activated.

2. Amplification = Off feature activated.

3. Large customer attenuation values selected.

4. Input power level not correct.

5. Faulty input connections from 9V supplies.

6. Fault KPA control cable or connection.

This can usually be determined by using the Monitor menu to check the DC current levels being drawn by each transistor inside the amplifier module. Any transitor (QX) current that is 50% more or less than normal would probably indicate a failure.

1. Incorrect cable connections.

2. Improper communication settings between KPA and controlling terminal.

3. Entry mode of unit set to LOCAL.

1. Check the configuration menu to determine if mute functions has been activated. Mute = On Means that the unit is muted. Turn Mute feature to Off to allow RF amplification of the input signal.

2. The amplification = Off feature allows for lower currect draw from the prome power source under standby conditions. To obtain RF output, ensure that this feature is set to amplification = On.

3. Check the Attenuation = XX setting in the configuration menu. Lower value to get more gain.

4. Use the input sample port on the front panel to determine that the input power level is as specified. Remove and replace the input cable.

5. Use the Monitor menu to check the internal level of the PS1 and PS2. The levels should be near 9V. If not correct, use a voltmeter to measure the voltage where the #8 wires enter the amplifier unit. With Unit Off, tighten connections if necessary.

6. Check the 25-pin ribbon cable connection at the amplifier module and at AS/0200 PCB. Tighten as necessary.

Nominal Values:

Q1 = 20mA Q2 = 100 mA Q3, Q4 = 1.0 A Q5, Q6, Q7 = 2.0 A Q8 to Q19 = 2.25 A Q20 to Q27 = 5.5 A

There are no user serviceable parts inside the amplifier module. Return to factory for repair.

1. Ensure cable is connected properly.

2. Check settings of KPA along with remote control terminal software.

3. Change entry mode setting in Configuration menu to Remote.

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Ku-Band Solid-State Power Amplifier Revision 0 Maintenance and Troubleshooting MN/KPA.IOM

Table 7-1. Troubleshooting (Continued)

Symptom Possible Cause Solution

Amplifier Temperature Fault

1. Operating temperature

9V power supply fault (PS1 and/or PS2)

Faulty/Improper Redundancy Switch Operation

Note: KPA module contains as internal temperature monitor that wilkl shut off the unit (i.e. turn off the 9V supplies) if the Heatsink temperature becomes excessive. This prevents the transistors from overheating and destruction. After cooling down below the tripo point, the unit will automatically restart.

limits exceeded.

2. Air intake or air exhaust paths obstructed.

3. Fan failed.

4. Defective transistors in amplifier module.

1. Faulty wire or connection.

2. Excessive current draw from transistor inside amplifier module.

3. Faulty power supply.

1. Faulty wiring or connections.

2. Improper settings.

1. Do not exceed 50°C (122°F) ambient input air temperature.

2. Remove obvstructions to ensure adequate air flow and proper amplifier cooling.

3. Check fan operation. Remove and replace fan(s) as required.

4. Use Monitor menu to check transistor currents. Compare readings with the specified nominal values. Report excessive readings to the manufacturer for repair. There are no user serviceable parts inside the KPA amplifier module.

1. Check cable and connections from PS1 and PS2 to amplifier module. On outside of module, measure voltage. Reading should be = 9.0 ± 0.5 VDC.

2. Use Monitor menus to check transistor currents. Record excessive values and return entire unit to manufacturer for repair.

3. Return failed power supply for repair. Replace with the new power supply.

1. Ensure that the RF and control cables are connected. Poor RF performances would tend to indicate a faulty KPA cable/connector. a. Improper switch control would indicate

a problem with the control cables.

b. Ensure the ends of the cables labeled

backup are connected to the backup unit.

2. Check redundancy setup in Configuration menu.

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Ku-Band Solid-State Power Amplifier Revision 0 Maintenance and Troubleshooting MN/KPA.IOM

NOTES:

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Ku-Band Solid-State Power Amplifier Revision 0 Specifications MN/KPA.IOM

Appendix A. Specifications

A.1 General

The following tables are individual specifications for:

• KPA-020IN

• KPA-040

• KPA-080

• KPA-100

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Ku-Band Solid-State Power Amplifier Revision 0 Specifications MN/KPA.IOM

Table A-1. KPS-020IN Specifications

Parameters Specifications Input

Level -10dBm Typical Impedance

50Ω Noise Figure 10 dB Typical, 15 dB max at max gain VSWR 1.25: 1 maximum Connector SMA Female

Output

Frequency 14.0 to 14.5 GHz Power 42.5 dBm minimum at 1 dB Compression Mute 60 dB VSWR 1.25:1 maximum Connector WR75G Waveguide

Gain

Linear 50 dB minimum, 53 dB Typical Adjust 20 dB in 0.25 dB steps Fill Band Per 40 MHz

± 0.75 dB

± -0.25 dB 0 to +50°C (32 to 122°F) ± 0.75dB

Third Order Intermodulation

Intercept +56.5 dBm minimum, 59.0 Typical Products -25 dBc max, -30 dBc typical

at 3 dB total backoff from rated P1dB

(two tones, ∆f+MHz)

AM to PM Conversion

Output 2.0 degrees typical

3.0 max at 42.5 dBm

Group Delay (per 40 MHz)

Linear Parabolic

± 0.03 ns/MHz

± 0.0025 ns/MHz

Ripple 1.0 ns Peak-to-Peak

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Ku-Band Solid-State Power Amplifier Revision 0 Specifications MN/KPA.IOM

Table A-1. KPS-020IN Specifications (Continued)

Parameters Specifications

Front Panel

Display 24 x 2 LCD Data Entry Cursor Control Keypad Output Sample Input Sample

Remote Control

COM Port EIA-232 or EIA-485 Protocol ASCII

Alarms

Summary Fault Form C

LED

Power On Green Fault Red Stored Fault Red TX On Yellow Online Yellow Remote Yellow

Mechanical

Envelop 3.5H x 19W x 24D inches

Weight TBD

Environmental

Temperature

Operating Storage

Humidity

Operating Storage

Altitude

Operating Storage

Shock Normal Commercial

Power Requirements

VAC 90 to 135 or 180 to 270 VAC, 47 to 63 Hz

Type N, 50Ω, –40 dBc

Type N, 50Ω, –20 dBc

(8.89H x 48.26W x 60.96D cm)

0 to 50°C (32 to 122°F)

–40 to 70°C (–40 to 158°F)

10 to 95% Noncondensing

0 to 100% Noncondensing

15, 000 ft MSL

50, 000 ft

Shipping and Handling

400W (Auto Select)

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Ku-Band Solid-State Power Amplifier Revision 0 Specifications MN/KPA.IOM

Table A-2. KPA-040 Specification

Parameter Specifications Output:

Frequency 14.0 to 14.5 GHz Power 45.5 dBm min at 1 dB Compression Mute -60 dB Impedance

50 Ω VSWR 1.25:1 Maximum Connector WR75G Waveguide

Gain:

Linear 60.0 dB minimum, 63 dB typical Adjust 20 dB in 0.25 dB steps Full Band Per 40 MHz

± 0.75 dB

± 0.25 dB 0 to +50°C (0 to 122°F) ± 0.50 dB at center frequency

± 1.00 dB full band

Third Order Intermodulation:

Intercept +53.5 dBm minimum, 56.0 dBm typical Products -30 dBc typical at –25 dBc maximum

3 dB total backoff

(2 tones, ∆f = 1 MHz) AM to PM Conversion 2.0 degrees typical, 3.0 maximum at rated output

Group Delay (per 40 MHz):

Linear Parabolic Ripple

Input:

Level Impedance Noise Figure VSWR Connector

± 0.03 ns/MHz

1.0 ns Peak-to-Peak

-10 dBm Typical

50Ω

10 dB typical, 15 dB maximum at max gain

1.25:1 Maximum

SMA Female Front Panel:

Display Data Entry Output Sample Input Sample

Remote Control:

Com Port Protocol

20 x 2 LCD

Cursor Control Keypad

SMA, 50Ω, -40 dBc

SMA, 50Ω, -20 dBc

RS-485, RS-232

ASCII

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Ku-Band Solid-State Power Amplifier Revision 0 Specifications MN/KPA.IOM

Table A-2. KPA-040 Specification (Continued)

Parameters Specification

Alarms:

Summary Fault

LED:

Power On Fault Stored Fault TX ON Online Remote

Mechanical:

Height Width Depth

Environmental:

Altitude Temperature

Humidity

Shock

Power Requirements 90 to 135 VAC, or 180 to 270 VAC, 47 to 63 Hz, 600W (Auto-Select)

Form C

Green Red Red Yellow Yellow Yellow

7 inches (18 cm) 19 inches (48 cm) 24 inches (61 cm)

15,000 feet MSL operating 0 to 50°C (32 to 122°F) Operating

-40 to 70°C (-40 to 158°F) Storage 10 to 95% Non-condensing Operating 0 to 100% Non-condensing Storage Normal Commercial Shipping and Handling

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Table A-3. KPA-080 Specification

Parameters Specifications Parameters Specifications

Input Front Panel

Impedance

50Ω Noise Figure 10dB Typical, 15 dB max at max gain Data Entry Cursor Control Keypad VSWR 1.25: 1 maximum Output Sample Connector SMA Female Input Sample

Output Remote Control Frequency 14.0 to 14.5 GHz COM Port RS-232 or RS-485 Power 48.5 dBm minimum at 1 dB Compression Protocol ASCII Mute 60 dB Alarms Impedance

50Ω VSWR 1.25: 1 maximum LED Connector WR75G Waveguide Power On Green

Gain Fault Red Linear 61 dB minimum, 64 db Typical Stored Fault Red Adjust 20 dB in 0.25 dB steps TX On Yellow Full Band Per 40 MHz

0 to +50°C (32 to 122°F)

± 0.75 dB ± -0.25 dB ± 0.50 dB at center frequency ± 1.00 dB full band

Third Order Intermodulation Envelop 8.75H x 19W x 24D inches

Products -30 dBc Typical, -25 dBc maximum

@ 3 dB total backoff (2 tones, ∆F = 1 MHz)

AM to PM Conversion Enviromental

Output 2.0 degrees typical, 3.0 max @ rated output Temperature:

Group Delay (per 40 MHz) Humidity:

Linear

Parabolic

± 0.03 ns/MHz

± 0.003 ns/MHz

Ripple 1.0 ns Peak-to-Peak VAC 180 to 270 VAC, 47 to 63 Hz

Display 20 x 2 LCD

Type N (f), 50Ω, -40 dBc nominal Type N (f), 50Ω, -20 dBc nominal

Summary Fault Form C

Online Yellow Remote Yellow

Mechanical

(22.22H x 48.26W x 60.96D cm)

Weight 75 lbs (34 kg)

Operating Storage

0 to 50°C (32 to 122°F)

-40 to 70°C (-40 to 158°F)

Operating Storage

10 to 95% Noncondensing 0 to 100% Noncondensing

Shock Normal Commercial

Shipping and Handling

Power Requirements

1100W nominal

A-6

Ku-Band Solid-State Power Amplifier Revision 0

Specifications MN/KPA.IOM

Table A-4. KPA-100 Specification

Parameters Specifications Parameters Specifications

Input Front Panel

Impedance

50Ω

Display 20 x 2 LCD Noise Figure 10dB Typical, 15 dB max at max gain Data Entry Cursor Control Keypad VSWR 1.25: 1 maximum Output Sample Connector SMA Female Input Sample

Type N (f), 50Ω, -40 dBc nominal Type N (f), 50Ω, -20 dBc nominal

Level -10 dBm Typical

Output Remote Control Frequency 14.0 to 14.5 GHz COM Port RS-232 or RS-485 Power 49.5 dBm minimum at 1 dB Compression Protocol ASCII Mute -60 dB Alarms Impedance

50Ω

Summary Fault Form C VSWR 1.25: 1 maximum LED Connector WR75G Waveguide Power On Green

Gain Fault Red Linear 65 dB minimum, 70 db Typical Stored Fault Red Adjust 20 dB in 0.25 dB steps TX On Yellow Full Band Per 40 MHz

0 to +50°C (32 to 122°F)

± 0.75 dB ± 0.25 dB ± 0.50 dB at center frequency ± 1.00 dB full band

Online Yellow Remote Yellow

Mechanical

Third Order Intermodulation Envelop 8.75H x 19W x 24D inches

(22.22H x 48.26W x 60.96D cm)

Products -30 dBc Typical, -25 dBc maximum

Weight 75 lbs (34 kg) @ 3 dB total backoff (2 tones, ∆F = 1 MHz)

AM to PM Conversion Enviromental

Output 2.0 degrees typical, 3.0 max @ rated output Temperature:

Operating Storage

Group Delay (per 40 MHz) Humidity:

Operating Storage

Linear

± 0.03 ns/MHz

Shock Normal Commercial

0 to 50°C (32 to 122°F)

-40 to 70°C (-40 to 158°F)

10 to 95% Noncondensing 0 to 100% Noncondensing

Shipping and Handling

Parabolic

± 0.003 ns/MHz

Power Requirements

Ripple 1.0 ns Peak-to-Peak VAC 180 to 270 VAC, 47 to 63 Hz

1100W nominal

-7

Ku-Band Solid-State Power Amplifier Revision 0

Specifications MN/KPA.IOM

Notes:

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-8

Access Methods, 6-5 Addresses, 6-6

Block Diagram of KPA-020IN, 1-2 Block Diagram of KPA-040, 1-3 Block Diagram of KPA-080/100, 1-4

INDEX

Gain Eequalization of Redundant Units, 5-4 General, 4-1, 5-1, 6-1, 7-1

Indirect Access, 6-5 Installation, 2-1, 2-2 Interface Connector, 6-2 Introduction, 1-1

Cable Connection, 2-2, 2-3 Cables, 6-3 Command, 6-7 Command Ending, 6-8 Configuration Errors, 6-17 Command/Response Pairs, 6-9 Configuration Commands, 6-10 Confirmation Response, 6-7 Connector Pins, 3-1 Control Cabling for a 1:1 System, 5-2 Control Cabling for a 1:2 System, 5-3 Current Faults Menu, 4--13 Customer Discrete Control, Connector J5, 3-2

Device Address, 6-7 Dimensional and Outline Diagram, 3-5 Dimensional Diagram KPA-080/100, 3-7 Direct Access, 6-5

Electrical Interface, 6-2

End of Message, 6-8

Error Processing, 6-17 Error Response, 6-7 External Connections, 3-1

Family of Ku-Band SSPA, 1-1 Front Panel, 4-1 Front Panel Indicators, 4-3 Functional Description, 1-3

KPA Commands, 4-7

Maintenance and Troubleshooting, 7-1 Maintenance Testing, 7-2 Menu Tree, 4-6 Message Structure, 6-6 Mode Commands, 6-11

Operation, 4-1, 4-5 Operating Functions, 4-2 Optional: Redundancy Kit Installation, 2-3 Overview, 1-1

Physical Address, 6-6 Possible Time-Out Sources, 6-17 Prime Power Connection, 2-2 Prime Power Switch, 3-5 Protocol, 6-4

Rear Panel, 3-1 Rear Panel Connector, 3-1 Redundancy Installation, 2-4 Redundancy Kit (AS/0435), 2-5 Redundancy Kit (KPA-040), 2-5 Redundant Configuration, 5-1 Redundant Loop Interface Connector J4, 3-2 Redundant Operation, 5-1 Redundant Outline Diagram KPA-080/100, 3-9 Remote Control Specification, 6-1

i-1

Ku-Band Solid-State Power Amplifier Revision 0 Index MN/KPA.IOM

Response Ending, 6-8 RS-232/RS-485 Onterface, Connector J6, 3-4

Select: Configuration Menu, 4-8 Select: Monitor Status Menu, 4-10 Select: Stored Faults Menu, 4-15 Select: Utility Functions Menu, 4-16 Specifications, A-1 Start Character, 6-6 Status Commands, 6-12 Stored Alarms, 6-16 Switching On, 4-4

Time-Outs, 6-17 Troubleshooting, 7-2

Unpacking, 2-1 Utility Commands, 6-9

Virtural Address, 6-6

Waveguide Switch Interface, Connector J7, 3-4

This page is intentially left blank

i–2

METRIC CONVERSIONS

Units of Length

Unit

1 centimeter — 0.3937 0.03281 0.01094

1 inch 2.540 — 0.08333 0.2778

1 foot 30.480 12.0 — 0.3333

1 yard 91.44 36.0 3.0 —

Centimeter

Inch

Foot

Yard

Mile

6.214 x 10

1.578 x 10

1.893 x 10

5.679 x 10

Meter

-6

-5

-4

0.01 — —

0.254 — 25.4

0.3048 — —

0.9144 — —

Kilometer Millimeter

1 meter 100.0 39.37 3.281 1.094

1 mile

1 mm — 0.03937 — — — — — —

1 kilometer — — — — 0.621 — — —

1.609 x 10

6.336 x 104 5.280 x 103 1.760 x 103

6.214 x 10

-4

—

— — —

1.609 x 103

1.609 —

Temperature Conversions

Unit

32° Fahrenheit

212° Fahrenheit

-459.6° Fahrenheit

° Fahrenheit

—

° Centigrade

(water freezes)

100

(water boils)

273.1

(absolute 0)

Formulas

C = (F - 32) * 0.555

F = (C * 1.8) + 32

Units of Weight

Unit

1 gram — 0.03527 0.03215 0.002205 0.002679 0.001

Gram

Ounce

Avoirdupois

Ounce

Troy

Pound

Avoir.

Pound

Troy

Kilogram

1 oz. avoir. 28.35 — 0.9115 0.0625 0.07595 0.02835

1 oz. troy 31.10 1.097 — 0.06857 0.08333 0.03110

1 lb. avoir. 453.6 16.0 14.58 — 1.215 0.4536

1 lb. Troy 373.2 13.17 12.0 0.8229 — 0.3732

1 kilogram

1.0 x 10

35.27 32.15 2.205 2.679 —

2114 WEST 7TH STREET TEMPE ARIZONA 85281 USA

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Comtech EF Data KPA-020IN, KPA-040, KPA-100, KPA-080 Installation And Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual