Comtech EF Data LCS-4 User Manual

-

4

LCS

L-Band Combiner Switch

Installation and Operation Manual

Part Number MN/LCS4.IOM Revision 1

Comtech EF Data is an ISO

9001 Registered Company.

LCS-4

L-Band Combiner Switch

Installation and Operation Manual

Part Number MN/LCS4.IOM

Revision 1

February 2, 2006

Comtech EF Data, 2114 West 7th Street, Tempe, Arizona 85281 USA, [phone], FAX: [phone].

Copyright © Comtech EF Data, 2006. All rights reserved. Printed in the USA.

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:

[e-mail]

Contact us via the web at www.comtechefdata.com

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

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

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

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

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

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

.

ii

Table of Contents

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

1.1 Introduction....................................................................................................................................... 1–1

1.2 Functional Description .....................................................................................................................1–2

1.3 Features.............................................................................................................................................. 1–4

1.4 Optional Items...................................................................................................................................1–4

1.5 External BUC/LNB Fault Input ................................................................................................1–5

CHAPTER 2. INSTALLATION ..............................................................................................2–1

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

Unpack the LCS-4 as follows: .................................................................................................................. 2–1

2.2 Mounting............................................................................................................................................ 2–2

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CHAPTER 3. SYSTEM OPERATION....................................................................................3–1

3.1 Coaxial Connectors........................................................................................................................... 3–1

3.2 Multi-Pin Connector Pinout............................................................................................................. 3–2

3.3 Remote Port Connector.................................................................................................................... 3–2

3.4 Fault and Online Status Connector................................................................................................. 3–3

3.5 (Future Option) Modulator Faults and TX On/Off Connector .................................................... 3–4

CHAPTER 4. LOW NOISE BLOCK ASSEMBLY .................................................................4–1

4.1 General............................................................................................................................................... 4–1

4.2 Options............................................................................................................................................... 4–2

4.3 Redundant C-Band LNB Installation .............................................................................................4–2

4.3.1 Tools Required.............................................................................................................................4–2

4.3.2 C-Band LNB Mounting Kits........................................................................................................ 4–2

4.3.3 Assemble Redundant C-Band LNB .............................................................................................4–3

4.3.4 C-Band LNB Installation .............................................................................................................4–6

4.4 Ku-Band LNB Installation ............................................................................................................... 4–7

4.4.1 Tools Required.............................................................................................................................4–7

4.4.2 Ku-Band LNB Mounting Kits...................................................................................................... 4–7

4.4.3 Assemble Redundant Ku-Band LNB........................................................................................... 4–8

4.4.4 Ku-Band LNB Installation ......................................................................................................... 4–10

4.5 Settings (LNB) Lo, Mix and Spectrum.......................................................................................... 4–11

4.5.1 C-Band ....................................................................................................................................... 4–11

4.5.2 Ku-Band..................................................................................................................................... 4–11

CHAPTER 5. BLOCK UP CONVERTER .............................................................................5–1

5.1 General............................................................................................................................................... 5–1

5.2 C-Band Redundant BUC Assembly Procedure.............................................................................. 5–1

5.2.1 Assemble Waveguide Switch Kit, AS/9528-1............................................................................. 5–2

5.2.2 Assemble BUC Mounting Kit (KT/9826-1) ................................................................................5–3

5.3 Ku-Band Redundant BUC Assembly Procedures.......................................................................... 5–4

5.3.1 Assemble Waveguide Switch Kit, PL/9527-1 .............................................................................5–4

5.3.2 Assemble Ku-Band Redundant BUCs .........................................................................................5–5

5.4 LO, MIX and Spectrum Settings ..................................................................................................... 5–7

5.4.1 C-Band ......................................................................................................................................... 5–7

5.4.2 Ku-Band....................................................................................................................................... 5–8

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5.5 Single-Thread BUC Installation....................................................................................................... 5–9

5.5.1 Tools Required.............................................................................................................................5–9

5.5.2 Mounting Kits ..............................................................................................................................5–9

5.6 Installation....................................................................................................................................... 5–11

CHAPTER 6. CABLE INSTALLATION ................................................................................. 6–1

6.1 Introduction....................................................................................................................................... 6–1

6.2 Single Configuration Cable Installation .........................................................................................6–2

6.3 Redundant Configuration Cable Installation.................................................................................6–3

CHAPTER 7. FRONT PANEL CONTROL ............................................................................7–1

7.1 Introduction....................................................................................................................................... 7–1

7.2 Description.........................................................................................................................................7–1

7.2.1 BUC Control ................................................................................................................................7–2

7.2.2 LNB Control ................................................................................................................................7–3

7.2.3 Current Calibration ......................................................................................................................7–4

7.2.4 Redundancy Mode ....................................................................................................................... 7–4

7.2.5 LED Conditions ...........................................................................................................................7–5

7.3 Operation........................................................................................................................................... 7–6

7.3.1 AUTO / MAN Operation .............................................................................................................7–6

7.3.2 CAL Switch and LED Operation ................................................................................................. 7–6

7.3.3 LNB Voltage/Current Turn ON ...................................................................................................7–7

7.3.4 ODU/BUC or LNB Online Switch ..............................................................................................7–7

7.4 Fault Definitions for Switchover for LNB or ODU/BUC .............................................................. 7–7

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

A.1 description............................................................................................................................................. 1

A.1.1 EIA-485........................................................................................................................................... 1

A.1.2 EIA-232........................................................................................................................................... 2

A.2 Basic Protocol ....................................................................................................................................... 2

A.2.1 Packet Structure ..............................................................................................................................3

A.3 Commands or Responses..................................................................................................................... 6

APPENDIX B. SPECIFICATIONS ............................................................................................. 1

B.1 General Specification ...........................................................................................................................1

B.2 Environmental and Physical Specifications ....................................................................................... 3

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Figures

Figure 1-1. LCS-4 L-Band Combiner Switch.....................................................................................1–2

Figure 1-2. L-Band Multi-Modem Module Block Diagram (Redundancy) ......................................... 1–3

Figure 2-1. Typical Installation of the Optional Mounting Bracket, KT/6228-1 .................................2–3

Figure 3-1. Rear Panel......................................................................................................................3–1

Figure 4-1. C-Band Redundant LNB (KT/9526-1). ...........................................................................4–3

Figure 4-2. Switch Port Locations. ....................................................................................................4–4

Figure 4-3. C-Band LNB Switch........................................................................................................4–5

Figure 4-4. Ku-Band Redundant LNB (KT/10176-1)......................................................................... 4–8

Figure 4-5 Switch Port Locations .....................................................................................................4–9

Figure 4-6. Ku-Band LNB Switch ...................................................................................................... 4–9

Figure 5-1. Mounting Kit, KT/9928-1...............................................................................................5–10

Figure 6-1. Single Configuration Cable Installation ..........................................................................6–3

Figure 6-2. Redundant Configuration Cable Installation...................................................................6–5

Figure 7-1. LCS-4 Front Panel..........................................................................................................7–1

Tables

Table 3-1. Coaxial Connectors..........................................................................................................3–1

Table 3-2. Multi-Pin Connector Pinout .............................................................................................. 3–2

Table 3-3. Multi-Pin Connector Pinout .............................................................................................. 3–2

Table 4-1. For C-Band: LO and MIX Information for Demodulator and LNB..................................4–11

Table 4-2. For Ku-Band: LO and MIX Information for Demodulator and LNB ................................4–11

Table 5-1. LO, MIX, and MOD Spectrum Settings for Modulator and BUC...................................... 5–7

Table 5-2. LO, MIX, and MOD Spectrum Settings for Modulator and BUC...................................... 5–8

Table 5-3. Optional: C-Band Mounting Kit, KT/5738-1 (BUC to OMT) ............................................. 5–9

Table 5-4. Optional: Ku-Band Mounting Kit, KT/8924-1 (BUC to OMT) ...........................................5–9

Table 7-1. Fault Definitions for Switchover for LNB or ODU / BUC ..................................................7–7

Table B-1. General Specifications ................................................................................................... B–1

Table B-2. Environmental and Physical Specification ..................................................................... B–3

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About this Manual

This manual provides installation and operation information for the Comtech EF Data
LCS-4 L-Band Combiner Switch. This is a technical document intended for earth station
engineers, technicians, and operators responsible for the operation and maintenance of
the LCS-4.

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.

IMPORTANT indicates a statement that is associated with the task

IMPORTANT

being performed.

Metric Conversion

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

Trademarks

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:

Comtech EF Data Technical Publications Department: [e-mail]

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ELECTRICAL SAFETY

The LCS-4 has been shown to comply with the following safety standard:

• EN 60950: Safety of Information Technology Equipment, including electrical business
machines.

The equipment is rated for operation over the range 100 - 240 volts AC. It has a maximum
power consumption of 2.9 amps.

FUSES

The LCS-4 is fitted with two fuses, one each for line and neutral connections. These are contained
within the body of the IEC power connector, behind a small plastic flap. For 115 and 130 volt AC
operation, use T3, 15A, TO.75A, 20mm fuses.

IMPORTANT

Environmental

The LCS-4 shall not be operated in an environment where the unit is exposed to extremes
of temperature outside the ambient range 0 to 50°C (32 to 122°F), precipitation,
condensation, or humid atmospheres above 95% RH, altitudes (un-pressurized) greater
than 2000 meters, excessive dust or vibration, flammable gases, corrosive or explosive
atmospheres.

Operation in vehicles or other transportable installations that are equipped to provide a
stable environment is permitted. If such vehicles do not provide a stable environment,
safety of the equipment to EN60950 may not be guaranteed.

For continued operator safety, always replace the fuses with the
correct type and rating.

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Installation

The installation and connection to the line supply must be made in compliance to local or
national wiring codes and regulations.

The LCS-4 is designed for connection to a power system that has separate ground, line
and neutral conductors. The equipment is not designed for connection to power system
that has no direct connection to ground.

The LC-4 is shipped with a line inlet cable suitable for use in the country of operation. If
it is necessary to replace this cable, ensure the replacement has an equivalent
specification. Examples of acceptable ratings for the cable include HAR, BASEC and
HOXXX-X. Examples of acceptable connector ratings include VDE, NF-USE, UL, CSA,
OVE, CEBEC, NEMKO, DEMKO, BS1636A, BSI, SETI, IMQ, KEMA-KEUR and
SEV.

International Symbols:

Symbol Definition Symbol Definition

~

Alternating Current

Fuse

Telecommunications Terminal Equipment Directive

In accordance with the Telecommunications Terminal Equipment Directive 91/263/EEC,
this equipment should not be directly connected to the Public Telecommunications
Network.

Protective Earth

Chassis Ground

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EMC (Electromagnetic Compatibility)

In accordance with European Directive 89/336/EEC, the LCS-4 has been shown, by
independent testing, to comply with the following standards:

Emissions: EN 55022 Class B - Limits and methods of measurement of radio interference
characteristics of Information Technology Equipment.

(Also tested to FCC Part 15 Class B)

Immunity: EN 50082 Part 1 - Generic immunity standard, Part 1: Domestic, commercial
and light industrial environment.

Additionally, the LCS-4 has been shown to comply with the following standards:

EN 61000-3-2 Harmonic Currents Emission

EN 61000-3-3 Voltage Fluctuations and Flicker

EN 61000-4-2 ESD Immunity

EN 61000-4-4 EFT Burst Immunity

EN 61000-4-5 Surge Immunity

EN 61000-4-6 RF Conducted Immunity

EN 61000-4-8 Power frequency Magnetic Field Immunity

EN 61000-4-9 Pulse Magnetic Field Immunity

EN 61000-4-11 Voltage Dips, Interruptions, and Variations Immunity

EN 61000-4-13 Immunity to Harmonics

In order that the Modem continues to comply with these standards,
observe the following instructions:

IMPORTANT

• Connections to the transmit and receive IF ports (Type N and Type F, female,
connectors) should be made using a good quality coaxial cable - for example
RG58/U (50Ω or RG59/U (75Ω).

• All 'D' type connectors attached to the rear panel must have back-shells that
provide continuous metallic shielding. Cable with a continuous outer shield
(either foil or braid, or both) must be used, and the shield must be bonded to the
back shell.

• The equipment must be operated with its cover on at all times. If it becomes
necessary to remove the cover, the user should ensure that the cover is correctly
re-fitted before normal operation commences.

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Warranty Policy

This Comtech EF Data product is warranted against defects in material and workmanship
for a period of 24 months 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 to provide 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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xii

1.1 INTRODUCTION

The LCS-4 L-Band Combiner Switch (Figure 1-1) is available in the following configurations:

• Single Configuration (C-Band, Ku-Band, or L-Band)

• Redundant Configuration (C-Band, Ku-Band, or L-Band)

Procedures provided in this manual are based on utilizing Comtech EF Data
equipment. If other user equipment is utilized, the customer shall obtain the

IMPORTANT

The LCS-4 L-Band Combiner Switch has a 4-way transmit (TX) and Receive (RX) path
combiner/splitter.

• Combines four TX L-Band signals from L-Band modulators for delivery to an Outdoor

• The unit receives an L-Band signal from an LNB and splits it into four outputs for

• The unit provides current monitoring and switch drive capability for a 1:1 BUC/LNB

• The unit provides a 10 MHz reference for two ODU/BUCs and two LNBs. This

• The 10 MHz reference can be provided to four modems.

• FSK signals from one of the four modulators are passed through to the ODU/BUC.

• The unit supports hot swap redundant power supplies for itself and the ODU/BUC.

• Redundant, but not swappable, LNB power is developed internally.

• Redundant, but not swappable, power is internally generated for the ODU/BUC and LNB

documentation required to operate with the LCS-4 L-Band Combiner Switch.

Unit (ODU) or Block Up Converter (BUC).

delivery to four L-Band demodulators.

system

eliminates the need for a high stability reference in the L-Band modem.

switch drivers.

Chapter 1. INTRODUCTION

1–1

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Introduction MN/LCS4.IOM

Figure 1-1. LCS-4 L-Band Combiner Switch

1.2 FUNCTIONAL DESCRIPTION

On the TX-side, the TX signals of up to four modems are combined. The combined output is
transmitted to one of the two outputs that feed an antenna system. Each TX output provides a
10 MHz BUC reference signal, a BUC power supply, and FSK communications. Each 10 MHz
BUC reference and power supply has an independent On/Off control. Figure 1-2 shows a block
diagram of the unit.

On the RX-side, one of the two antenna systems feed a splitter. The splitter outputs provide the
RX signal for up to four modem receivers. Each RX input provides a 10 MHz LNB reference
signal, a LNB power supply, and DESQ communications. Each 10 MHz LNB reference and
power supply has an independent On/Off control. The L-Band Multi-Modem has redundant
internal power supplies, BUC power supplies, and LNB power supplies. L-Band Multi-Modem
Module also provides a driver for an RF (baseball) switch.

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Introduction MN/LCS4.IOM

UPC Interface

L-Band
Modulators
4 x Type N

10 MHz

10 MHz

To

Modems

L-Band

Demodulators

4 x Type F

Remote

Port

Prime

Power A

Prime

Power B

Ext

FSK

FSK

Select

Select

Monitors

Monitors

485 / 232

485 / 232

p

BUC PS A

a

BUC PS A

w
S
t
o

Unit PS A

H

Unit PS A

p

BUC PS B

a

BUC PS B

w
S
t
o

Unit PS B

H

Unit PS B

Internal FSK

Int / Ext

Int / Ext

10 MHz

10 MHz

VCXO

VCXO

PLL

PLL

L-Band

L-Band

÷

DC Blk

DC Blk

Fan

Fan

Host

Host

L-Band

L-Band

Σ

&

DC Blk

DC Blk

FSK

÷

&

&

Σ

&

SPDT

SPDT

Attenuator

10 MHz A

10 MHz B

Diode

Diode

Or

Or

Tx

BUC PS A

FSK

10 MHz A

BUC PS B

FSK

10 MHz B

LNB PS A

10 MHz A

LNB PS B

10 MHz B

Logic &

Logic &

Control

Control

Front

Panel

LCS-4

DC, FSK, 10 MHz

DC, FSK, 10 MHz

Insertion

Insertion

DC, FSK, 10 MHz

DC, FSK, 10 MHz

Insertion

Insertion

DC, 10 MHz

DC, 10 MHz

Insertion

Insertion

DC, 10 MHz

DC, 10 MHz

Insertion

Insertion

LNB PS A

LNB PS A

LNB PS B

LNB PS B

RF Switch

RF Switch

PS & Driver

PS & Driver

Mod I/O

Mod I/O

Fault Relay

Fault Relay

Status

Status

BUC / LNB

BUC / LNB

Fault Input

Fault Input

BUC A

BUC A

BUC B

BUC B

LNB A

LNB A

LNB B

LNB B

LNB Control

BUC Control

Outdoor

Equipment

& Sense

& Sense

Figure 1-2. L-Band Multi-Modem Module Block Diagram (Redundancy)

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1.3 FEATURES

Standard FAST, or Hardware Phase Description

Combiner, Splitter

Hardware 1 Single or dual AC PS for unit or BUC (options)
Standard 1 L-Band Splitting/Combining
Standard 1 Flash of all programmable items via Remote RS-232 port
Standard 1 10 MHz External Reference input
Standard 1 Multiple fans and monitoring
Standard 1 BUC FSK control via modem (pass-though)
Standard 1 FSK driver/receiver hardware on RF card.
Standard 1 High temperature Alarm/Internal temperature report.
Standard 1 Front panel LED/Switch Control and Monitoring.

1:1 Switching Capability 1 Hardware support developed in Phase 1.

Standard 1 BUC/LNB switching
Standard 1 10 MHz sourcing to modems

Note: Separate definition of the ODU/BUC and LNB switches and interconnecting cables are
required for this unit to operate.

1.4 OPTIONAL ITEMS

Option Unit Power Supply ODU/BUC Power Supply Description

0 1 each, Non-redundant AC N/A Standard
1 2 each, Redundant AC N/A Optional
2 2 each, Redundant AC 2 each, 24 VDC 100W Redundant AC Optional
3 2 each, Redundant AC 2 each, 48 VDC 150W Redundant AC Optional

The following optional items are needed for this unit to function as a system.

Connector/Cable Assemblies L-Band IF Cable (Optional)

Outdoor LNB and BUC switch control (Optional)
Modem/Modulator Interconnect

Host (Optional)
ODU/BUC RF Switch Assembly and
Mounting Kits

LNB RF Switch Assembly and
Mounting Kits

PC to FSK BUC Cable For charging address of BUC.

Ku-Band (Optional)
C-Band (Optional)
Ka-Band (Future) (Optional)
Ku-Band (Optional)
C-Band (Optional)
Ka-Band (Optional)

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1.5 EXTERNAL BUC/LNB FAULT INPUT

Use of this connector is optional. This connector permits fault inputs from ODU/BUC or
LNB that have fault contacts for fault indication. Normally, this connector is used in
applications where the ODU/BUC power supply or LNB power supply is external to the
LCS-4 to permit a means of indicating a fault to the LCS-4 so that ODU/BUC or LNB
switchover still occurs.

The external fault inputs are enabled in one of two ways:

1. By grounding the BUC Input Enable and /or the LNB Input Enable.

2. Activating the DIP-switches that control the BUC Input Enabled and/or LNB
Input Enable.

J21, 9-pin D Female

Pin # Signal Name

BUCA_FLT

1

BUCB_FLT_BUF

2

BUC_FLT_EN

8

LNBB_FLT

6

LNBB_FLT_BUF

7

LNB_FLT_EN

3

4,5,9 GND GND Ground

Signal

Direction

I
I
I

I
I
I

Description

External BUC A Fault. (Grounded is OK)
External BUC B Fault. (Grounded is OK)
External BUC Fault Input Enable – with

GND
External LNB A Fault (Grounded is OK)
External LNB B Fault (Grounded is OK)
External LNB Fault Input Enable – with

GND

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1–6

Chapter 2. INSTALLATION

2.1 UNPACKING

Inspect shipping containers for damage. If shipping containers are damaged, keep them until the
contents of the shipment have been carefully inspected and checked for normal operation.

The LCS-4 and manual are packaged in pre-formed, reusable, cardboard cartons containing foam
spacing for maximum shipping protection.

Do not use any cutting tool that will extend more than 1 inch into the
container. This can cause damage to the equipment within.

CAUTION

Unpack

the LCS-4 as follows:

1. Cut the tape at the top of the carton indicated by OPEN THIS END.

2. Remove the cardboard/foam space covering the LCS-4.

3. Remove the LCS-4, manual, and power cord from the carton.

4. Save the packing material for storage or reshipment purposes.

5. Inspect the equipment for any possible damage incurred during shipment.

6. Check the equipment against the packing list to ensure the shipment is correct.

7. Refer to the following sections for further installation instructions.

2–1

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Q

Installation MN/LCS4.IOM

2.2 MOUNTING

If the LCS-4 is to be mounted in a rack, ensure that there is adequate clearance for
ventilation, particularly at the sides. In rack systems where there is high heat dissipation,
forced air-cooling must be provided by top and bottom mounted fans or blowers.
UNDER NO CIRCUMSTANCE should the highest internal rack temperature be
allowed to exceed 50°C (122° F).

Install optional installation bracket (Figure 2-1) using mounting kit, KT/6228-1.

Optional: Mounting Kit, KT/6228-1

uantity Part Number Description

2 FP/6138-1 Bracket, Rear Support
4 HW/10-32x1/2RK Bolt, #10 Rack
2 HW/10-32HEXNUT Nut, #10 Hex
2 HW/10-32FLT Washer, #10 Flat
2 HW/10-32x1/4SHC Screw, Socket 10-32 x 1/4inch

The tools required for this installation are a medium Phillips screwdriver and a 5/32­inch SAE Allen Wrench.

Refer to the Figure 2-1, and then install the LCS-4 rear support brackets as follows:

1. Install the rear support brackets onto the mounting rail of the rack. Fasten with
the bracket bolts.

2. Mount the LCS-4 into the equipment rack ensuring that the socket heads
engage into the LCS-4 slots of the rear support brackets,

3. Fasten the provided #10 socket head screws to the rear-side mounting slots on
either side of the chassis and secure with #10 flat washers and #10 hex nuts.

2–2

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Figure 2-1. Typical Installation of the Optional Mounting Bracket, KT/6228-1

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2–4

Chapter 3. SYSTEM OPERATION

3.1 COAXIAL CONNECTORS

Figure 3-1. Rear Panel

Table 3-1. Coaxial Connectors

Coaxial

Connector

J1
J2
J3
J4
J5
J6
J7
J8

J9
J10
J11
J12

J13 BNC, Female I External 10 MHz Reference Input
J14
J15
J16
J18
J24
J25

Connector Type I/O Description

Type N, Female
Type N, Female
Type N, Female
Type N, Female
Type N, Female
Type N, Female
Type N, Female
Type N, Female
Type F, Female
Type F, Female
Type F, Female
Type F, Female

BNC, Female
BNC, Female
BNC, Female
BNC, Female
SMA, Female
SMA, Female

O

O
I/O
I/O
I/O
I/O
I/O
I/O

O

O

O

O

O

O

O

O

O

I

BUC B L-Band Output
BUC A L-Band Output
Modulator 1 L-Band Input, FSK I/O
Modulator 2 L-Band Input
Modulator 3 L-Band Input
Modulator 4 L-Band Input, FSK I/O
LNB B L-Band Inputs
LNB A L-Band Inputs
Demodulator 1 L-Band Output
Demodulator 2 L-Band Output
Demodulator 3 L-Band Output
Demodulator 4 L-Band Output

10 MHz Output
10 MHz Output
10 MHz Output
10 MHz Output
TX IF to Uplink Power Control (UPC) (Optional)
TX IF from UPC

3–1

LCS-4 L-Band Combiner Switch Revision 1
Connector and Pinouts MN/LCS4.IOM

3.2 MULTI-PIN CONNECTOR PINOUT

Table 3-2. Multi-Pin Connector Pinout

Ref Des Description

J18 RS-232/485 Remote Port
J19 Online and Fault Status:

Status: Form C contacts ODC/BUC A/B Online and LNB A/B Online
BUC Faults: Form C contacts BUC A and B fault status
LNB Faults: Form C contacts LNB A and B faults status.

Combiner Switch Faults: Form C contacts failed/OK status.
J20 Modulator Fault/TX OFF: Inputs and Mute
J21 BUC/LNB Fault Input: BUC A and B, LNB A and B, Enable BUC Faults, Enable LNB Faults.
J22 LNB RF Switch Driver
J23 BUC RF Baseball Switch Driver

3.3 REMOTE PORT CONNECTOR

J18, 9-pin D Male, Remote Port

Table 3-3. Multi-Pin Connector Pinout

RS-232 RS-485
Pin # Signal Name I/O Signal Name I/O Description

1 GND GND GND GND GND
2 RS-232 TD Output TX Line
3 RS-232 RD Input RX Line
4
5 GND GND GND GND GND
6 RS-485 RX+B Input RX Line
7 RS-485 RX-A Input RX Line Complement
8 RS-485 TX+B Output TX Line
9 RS-485 TX-A Output TX Line Complement

Note: For RS-485, 2-Wire, half-duplex operation, Pin 7 (RX-A) and Pin 9 (TX-A) are tied
together to form TX/RX -. Similarly, Pin 6 (RX+B) and Pin 8 (TX+B) are tied together to
form TX/RX+.

3–2

LCS-4 L-Band Combiner Switch Revision 1
Connector and Pinouts MN/LCS4.IOM

3.4 FAULT AND ONLINE STATUS CONNECTOR

J19, 25-pin D Female, Fault and Online Status.

Pins Connected
Pins # Signal Name Signal

Direction

2

BUC1_FLT_NO (BUC A)

1

BUC1_FLT_COM (BUC A)

14

BUC1_FLT_NC (BUC A)

16

BUC2_FLT_NO (BUC B)

15

BUC2_FLT_COM (BUC B)

3

BUC2_FLT_NC (BUC B)

5

LNB1_FLT_NO (LNB B)

4

LNB1_FLT_COM (LNB B)

17

LNB1_FLT_NC (LNB B)

19

LNB2_FLT_NO (LNB B)

18

LNB2_FLT_COM (LNB B)

6

LNB2_FLT_NC (LNB B)

8

SYS_FLT_NO

7

SYS_FLT_COM

20

SYS_FLT_NC

22

BUC2_ONLINE (BUC B)

21

BUC_ONLINE_COM BUC A/B)

9

BUC1_ONLINE (BUC A)

11

LNB2_ONLINE (LNB B)

10

LNB_ONLINE_COM (LNB

23

A/B)
LNB1_ONLINE (LNB A)

12

GND

13

GND

24

GND

25

GND

I/O Form C

I/O Form C

I/O Form C

I/O Form C

I/O Form C

I/O Form C

I/O Form C

GND
GND
GND
GND

The Fault/Alarm column shows the pins that are connected when a
fault condition exists. The OK column shows the pins connected in
the un-faulted/un-alarm condition. The conditions made when prime

IMPORTANT

power is disconnected from the unit are shown in the Power Off
column.

Type Fault

Alarm

Form C
Form C

Form C
Form C

Form C
Form C

Form C
Form C

Form C
Form C

Form C
Form C

Form C
Form C

GND
GND
GND
GND

1 - 14

15 - 3

4 -17

18 - 6

7 - 20

_

_

_

OK (No
Fault)

1 - 2

15 - 16

4 - 5

18 - 19

7 - 8

_

_

_

Power
Off

1 - 4

15 - 3

4 - 17

18 - 6

7 – 20

9 -21

10 - 23

_

3–3