ViaSat VMBR-1520 Installation, Operation And Maintenance Manual

Mobile
Broadband
Router

VMBR-1520

Installation,
Operation, and

Maintenance Guide

ViaSat Document Number

1075152

(Rev. 001)

ViaSat, Inc.
6155 El Camino Real
Carlsbad, CA 92009-1699
Tel: [phone]
Fax: [phone]

www.viasat.com

Mobile Broadband Router, VMBR-1520

Installation, Operation, and Maintenance Guide

DRAFT

Mobile
Broadband
Router

VMBR-1520

Installation,
Operation, and

Maintenance Guide

ViaSat Document Number

1075152

(Rev. 001)

ViaSat, Inc.
6155 El Camino Real
Carlsbad, CA 92009-1699
Tel: [phone]
Fax: [phone]

www.viasat.com

Publication Information

ViaSat, Inc.

Corporate
Headquarters

6155 El Camino Real

Carlsbad, CA 92009-1699

Phone: [phone]

Fax: [phone]

Germantown, MD

20511 Seneca Meadows
Parkway Suite 200

Germantown, MD 20876

Phone: [phone]

Fax: [phone]

Duluth, GA

1725 Breckinridge Plaza

Duluth, GA 30096

Phone: [phone]

Fax: [phone]

www.viasat.com

VMBR-1520 Mobile Broadband Router Installation, Operation, and Maintenance Guide

Revision Number Date Released Comments

001 September 25, 2008 Initial draft

© 2008 ViaSat, Incorporated. All rights reserved.
ViaSat® and the ViaSat logo are registered trademarks of ViaSat, Inc.
ArcLightTM is a trademark of ViaSat, Inc.
Other product names included in this document are trademarks of their
respective owners.

ViaSat Proprietary—The information, specifications, and features
contained in this document are subject to change without notice and
should not be construed as a commitment by ViaSat, Inc.

ViaSat, Inc. assumes no responsibility for any errors that may appear in
this document nor does it make expressed or implied warranty of any kind
with regard to this material, including, but not limited to, the implied
warranties of merchantability and fitness for a particular purpose. ViaSat,
Inc. shall not be liable for incidental or consequential damages in
conjunction with, or arising out of the furnishing, performance, or use of
this document and the program material it describes.

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VMBR-1520 Mobile Broadband Router Installation, Operation and Maintenance Guide

ii

REGULATORY COMPLIANCE and NOTICES

FCC Notice

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and

2. This device must accept any interference received, including interference that may cause undesired operation.

NOTE: This equipment has been tested and found to comply with the limits for a Class TBD) digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

-- Reorient or relocate the receiving antenna.

-- Increase the separation between the equipment and receiver.

-- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

-- Consult the dealer or an experienced radio/TV technician for help.

CAUTION: Shielded I/O cables must be used and all covers must be in place when operating this equipment.

Canadian Department of Communications compliance statement:

This equipment does not exceed Class A limits per radio noise emissions for digital apparatus set out in the Radio Interference
Regulation of the Canadian Department of Communications. Operation in a residential area may cause unacceptable interference to radio
and TV reception requiring the owner or operator to take whatever steps are necessary to correct the interference.

Avis de conformite aux normes du ministere des Communications du Canada:

Cet equipment ne dépasse pas les limites de Class A d’émission de bruits radioélectriques pour les appareils numériques tels que
prescrites par le Règlement sur le brouillage radioélectrique etabli par le ministére de Communications du Canada. L’exploitation faite en
milieu résidentiel peut entrainer le brouillage des réceptions radio et télé, ce qui obligerait le propriétaire ou l’operateur à prendre les
dispositions nécessaires pour en éliminer les causes.

Electro-Magnetic Emissions Compliance

The equipment has been tested for compliance with the following emissions and immunity requirements:

Emissions:

FCC 15B, Sec. 107, Class “A” Conducted Emissions
FCC 15B, Sec. 109, Class “A” Radiated Emissions
EN 55022: 2006, Class “A” Conducted Emissions
EN 55022: 2006, Class “A” Radiated Emissions
CISPR 22: 2006, Class “A” Conducted Emissions
CISPR 22: 2006, Class “A” Radiated Emissions

EMC:
EN 55024:1998, Amendment A2: 2003

IEC 61000-4-2: 2001, EN 61000-4-2: 1995; Amendment A2, 2001 ESD Immunity
IEC 61000-4-3: 2006, EN 61000-4-3: 2006 Radio Frequency Immunity
IEC 61000-4-4: 2006, EN 61000-4-4: 2004 Electrical Fast Transient Immunity
IEC 61000-4-5: 2005, EN 61000-4-5: 2006 Surge Immunity
IEC 61000-4-6: 2006, EN 61000-4-6: 1996; Amendment 1, 2001 RF Common Mode Immunity
IEC 61000-4-8: 2006, EN 61000-4-8: 1993; Amendment A1, 2001 Power frequency magnetic field immunity
IEC 61000-4-11: 2004, EN 61000-4-11: 2004 Voltage Dips and Short Interruptions

IEC 61000-3-3: 2005, EN 61000-3-3: 1995, Class “A” Voltage Flucuation and Flicker
IEC 61000-3-2: 2005, EN 61000-3-2: 2006, Class “A” Current Harmonics Emissions

Immunity characteristics — Limits and methods of
measurement, Amendment A2:2003 to EN 55024:1998

1075152 Rev. 001

VMBR-1520 Mobile Broadband Router Installation, Operation, and Maintenance Guide

Safety Compliance

The equipment has been tested and is in compliance with the following safety requirements:

IEC 60950-1 2nd Ed. 2005
EN 60950-1 2nd Ed. 2006
UL 60950-1 2nd Ed. 2007
CAN/CSA-C22.2 No. 60950-1 2nd Ed. 2007

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1075152 Rev. 001

VMBR-1520 Mobile Broadband Router Installation, Operation, and Maintenance Guide

Warnings, Cautions, and Notes

Safety precautions or important information found in this document
will normally be presented just prior to the point where the hazard is
likely to be encountered. Symbols used to identify the information are
defined as follows:

Warning

This symbol indicates a procedure or practice that, if not correctly
followed, could result in injury, death, or long term health hazard.

Caution

This symbol indicates a procedure or practices that, if not correctly

followed, could result in equipment damage, destruction, or make the
equipment not operate properly.

Caution

This symbol indicates that electrostatic discharge (ESD) precautions

must be observed or the equipment may be damaged.

Note

This symbol indicates information that is important to observe.

General Safety Precautions

General safety precautions are as follows:

Warning There are no user-serviceable parts inside any of the

equipment in your system. There are potentially lethal voltages inside the
equipment. It should only be opened by a technician trained and certified to

service ViaSat

products.

®

Warning

Installation of this product should be performed only by a

professional, certified installer.

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Convention

Example

Explanation

screen display

Wed May 6 17:01:03 2000

This font indicates system output.

Conventions

This document uses the following conventions as listed below.

Terminology conventions used in this manual include:
Window – refers to screens that can be minimized and recalled from the

program control bar at the bottom of the monitor display.
Tab screens – refers to displays presented from clicking tabs on a main

screen.
Screens – refers to all other displays presented from clicking on

continuation buttons.
Pop-ups – refers to displays presented automatically based on some

action the user has taken, such as confirmation questions, information
confirmations, or error messages.

Tool-tips – refers to descriptive messages displayed by placing the
cursor on an editable field.

1075152 Rev. 001

About This Manual

VMBR-1520 Mobile Broadband Router Installation, Operation, and Maintenance Guide

This manual contains information about the VMBR-1520 Mobile
Broadband Router including a general description, preparation for use,
installation, initial set up and configuration, configuration menu
reference, maintenance instructions, and preparation for reshipment.

Appendixes provide a site parameter value table (to be completed before
installation) used for initial configuration, an installation checklist,
software upgrade download procedures, and a list of definitions,
acronyms, and terms.

The following subjects are not covered in this manual:

• Network design is beyond the scope of this manual. The end
user is responsible for the design and administration of the

end-user network.

• Site Preparation is not covered. The installer is responsible
for preparing the site for proper installation of the product.

• Antenna Control Unit (ACU) and Antenna Subsystem (AS)
are not covered. Please refer to the ACU & AS

documentation.

Obtaining Additional Publications and Information

Additional publications and information including user guides, white
papers, application notes, release notes, software updates, training
schedules, and other technical information may be found on the
ViaSat® Extranet web site. The Extranet may be accessed through the
ViaSat® web site located at this URL:

http://extranet.viasat.com/
Customers and ViaSat® employees may apply for password access to

the Extranet by clicking on the Customer Login link and following the
link to create a new account.

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1075152 Rev. 001

Table of Contents

VMBR-1520 Mobile Broadband Router Installation, Operation, and Maintenance Guide

1. GENERAL DESCRIPTION.............................................................................................................................................. 1-1

1.1 S

1.2 S

1.3 E

1.4 VMBR-1520 M

2. PREPARATION FOR USE AND INSTALLATION.................................................................................................... 2-9

2.1 I

2.2 T

2.3 H

3. INITIAL SET UP AND CONFIGURATION ................................................................................................................. 3-1

3.1 I

3.2 P

3.3 I

3.4 M

4. OPERATING PROCEDURES ....................................................................................................................................... 4-14

ECTION OVERVIEW

ATELLITE NETWORK

QUIPMENT LIST

1.4.1 VMBR-1520 Mobile Broadband Router Description ........................................................................................ 1-6

1.4.2 VMBR-1520 Front Panel Controls and Indicators ............................................................................................. 1-8

NTRODUCTION

OOLS AND TEST EQUIPMENT

ARDWARE INSTALLATION

2.3.1 Equipment Location ........................................................................................................................................... 2-10

2.3.2 Mounting ............................................................................................................................................................. 2-11

2.3.3 VMBR-1520 Connections and Descriptions..................................................................................................... 2-13

2.3.3.1 Coaxial Connections ...........................................................................................................................................2-14

2.3.3.2 ACU Connections ...............................................................................................................................................2-14

2.3.3.3 Console Connections ..........................................................................................................................................2-15

2.3.3.4 User Data Connections........................................................................................................................................2-15

2.3.3.5 ACU Data Connections .......................................................................................................................................2-16

2.3.3.6 BUC Power Connections ....................................................................................................................................2-16

2.3.3.7 Input Power ........................................................................................................................................................2-16

2.3.4 Additional Equipment ........................................................................................................................................ 2-16

NTRODUCTION

3.1.1 Quick Gui de and Summary .................................................................................................................................. 3-1

REPARATION FOR INITIAL SETUP

3.2.1 Parameters Required Before Configuring the VMBR-1520 .............................................................................. 3-2

3.2.2 Other Requirements Before Configuring the VMBR-1520 ............................................................................... 3-2

NITIAL SETUP AND CHECKOUT

3.3.1 Power On ............................................................................................................................................................... 3-3

3.3.2 Verify Operational Status ..................................................................................................................................... 3-3

3.3.2.1 Ping the Modem .................................................................................................................................................. 3-4

3.3.2.2 Verify Satellite Ac quisition Status ........................................................................................................................ 3-5

3.3.2.3 Ping the Hub Test Server ..................................................................................................................................... 3-6

3.3.2.4 Connect to the Hub Test Web Page ...................................................................................................................... 3-7

3.3.3 Normal Operation ................................................................................................................................................. 3-8

3.3.3.1 Verify Subscription Status.................................................................................................................................... 3-8

3.3.3.2 Verify Connection to the Internet ......................................................................................................................... 3-8

ODEM RECONFIGURATION

3.4.1 Preparation ............................................................................................................................................................ 3-9

3.4.2 Reconfiguration Details........................................................................................................................................ 3-9

3.4.2.1 General Parameters Menu .................................................................................................................................... 3-9

3.4.2.2 Satellite Parameters Menu ...................................................................................................................................3-10

3.4.2.3 ACU Parameters Menu .......................................................................................................................................3-10

3.4.2.4 Forward Link Parameters Menu ..........................................................................................................................3-11

3.4.2.5 Return Link Parameters Menu .............................................................................................................................3-11

3.4.2.6 Network Link Parameters Menu ..........................................................................................................................3-12

3.4.2.7 SCPS Parameters Menu ......................................................................................................................................3-12

3.4.2.8 Miscellaneous Parameters Menu .........................................................................................................................3-12

3.4.2.9 Calibration Paremeters ........................................................................................................................................3-13

3.4.3 Post Reconfiguration Reboot ............................................................................................................................. 3-13

...................................................................................................................................................... 1-1

.................................................................................................................................................... 1-1

............................................................................................................................................................ 1-2

OBILE BROADBAND ROUTER OVERVIEW

............................................................................................................................................................... 2-9

....................................................................................................................................... 2-9

......................................................................................................................................... 2-10

............................................................................................................................................................... 3-1

................................................................................................................................ 3-2

.................................................................................................................................... 3-3

......................................................................................................................................... 3-9

........................................................................................... 1-3

4.1 I

4.2 R

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EBOOTING THE MODEM

............................................................................................................................................................. 4-14

............................................................................................................................................. 4-14

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4.3 A

4.4 C

4.5 C

4.6 C

5. VMBR-1520 CONFIGURATION MENU REFERENCE ............................................................................................ 5-1

5.1 I

5.2 VMBR-1520 .................................................................................................................................................................. 5-1

6. MAINTENANCE INSTRUCTIONS ............................................................................................................................. 6-13

6.1 I

6.2 S

6.3 I

6.4 C

6.5 G

6.6 E

6.7 R

7. RESHIPMENT .................................................................................................................................................................... 7-1

DJUSTING RETURN LINK POWER

HECKING FORWARD LINK STATE AND ACTIVITY

HECKING

HECKING

NTRODUCTION

5.2.1 Main Menu ............................................................................................................................................................ 5-2

5.2.1.1 General Parameters Menu .................................................................................................................................... 5-2

5.2.1.2 Satellite Parameters Menu .................................................................................................................................... 5-3

5.2.1.3 ACU Parameters Menu ........................................................................................................................................ 5-3

5.2.1.4 Forward Link Parameters Menu ........................................................................................................................... 5-4

5.2.1.5 Return Link Parameters Menu .............................................................................................................................. 5-4

5.2.1.6 Network Link Parameters Menu ........................................................................................................................... 5-5

5.2.1.7 SCPS Parameters Menu ....................................................................................................................................... 5-5

5.2.1.8 Miscellaneous Parameters Menu .......................................................................................................................... 5-6

5.2.1.9 Calibration Parameters Menu ............................................................................................................................... 5-6

5.2.1.10

5.2.2 System Status Menu ............................................................................................................................................. 5-7

5.2.3 ACU Status Menu ............................................................................................................................................... 5-10

5.2.4 Upgrade Terminal Software Menu .................................................................................................................... 5-11

5.2.5 Version Information Menu................................................................................................................................. 5-12

5.2.6 Exit Program Menu ............................................................................................................................................ 5-12

NTRODUCTION

PECIAL TOOLS AND TEST EQUIPMENT

NSPECTION

6.3.1 Chassis Inspection .............................................................................................................................................. 6-13

6.3.2 Inspection of Cable Assemblies and Connectors.............................................................................................. 6-14

LEANING

6.4.1 Cleaning the Chassis........................................................................................................................................... 6-14

6.4.2 Cleaning Connectors........................................................................................................................................... 6-14

ENERAL TROUBLESHOO TING

QUIPMENT TROUBLE SHOOTING

6.6.1 Power On Indicator Does Not Light .................................................................................................................. 6-16

6.6.2 Cannot Ping Modem ........................................................................................................................................... 6-17

6.6.3 Modem Cannot Acquire Satellite Link ............................................................................................................. 6-17

6.6.4 Cannot Ping Hub Test Server............................................................................................................................. 6-17

6.6.5 Cannot Connect to Hub Test Web Server ......................................................................................................... 6-17

6.6.6 Cannot Connect to the Internet .......................................................................................................................... 6-17

6.6.7 Front Panel Fault Indicator Lit or Flashing ....................................................................................................... 6-17

EMOVAL AND REPLACEMENT

6.7.1 Removing the Chassis ........................................................................................................................................ 6-18

6.7.2 Replacing the Chassis ......................................................................................................................................... 6-18

6.7.3 Removing and Replacing Cables and Connectors ............................................................................................ 6-18

ACU S

TATE

............................................................................................................................................... 4-17

NMS S

TATE

............................................................................................................................................... 4-18

............................................................................................................................................................... 5-1

Overhead Parameters Menu ............................................................................................................................. 5-6

............................................................................................................................................................. 6-13

.................................................................................................................................................................. 6-13

.................................................................................................................................................................... 6-14

.............................................................................................................................. 4-15

.................................................................................................... 4-16

...................................................................................................................... 6-13

.................................................................................................................................... 6-15

................................................................................................................................ 6-15

................................................................................................................................... 6-18

7.1 R

7.2 P

7.3 S
A
A
A
A

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ETURN TO THE FAC TORY

ACKAGING

HIPPING

PPENDIX

PPENDIX

PPENDIX

PPENDIX

......................................................................................................................................................................... 7-2

A VMBR-1520 I
B
C
D G

............................................................................................................................................. 7-1

.................................................................................................................................................................... 7-2

NITIAL SETUP PREPARATION CHECKLIST

I

NSTALLATION CHECKL IST

D

OWNLOADING SOFTWARE UPGRADES TO THE

LOSSARY

.................................................................................................................................................... D-1

.......................................................................................................................... B-1

........................................................................... A-1

VMBR-1520 .................................................................. C-1

List of Figures

VMBR-1520 Mobil e Broadband Router Installation, Operation, and Maintenance Guide

Figure 1-1. Typical VSAT Network ............................................................................................................................................ 1-1

Figure 1-2. VMBR-1520 Mobile Broadband Router ................................................................................................................. 1-3

Figure 1-3. VMBR-1520 Functional Block Diagram................................................................................................................. 1-6

Figure 1-4. VMBR-1520 Front Panel.......................................................................................................................................... 1-8

Figure 2-1. VMBR-1520 Initial Basic Connections ................................................................................................................. 2-10

Figure 2-2. VMBR-1520 Chassis Dimension and Mounting Features ................................................................................... 2-12

Figure 2-3. VMBR-1520 Rear Panel ......................................................................................................................................... 2-13

Figure 3-1. Ping the VMBR-1520 ............................................................................................................................................... 3-4

Figure 3-2. VMBR-1520 System Status Web Page ................................................................................................................... 3-5

Figure 3-3. Ping the Hub Test Server .......................................................................................................................................... 3-6

Figure 3-4. Sample Hub Test Web Page ..................................................................................................................................... 3-7

Figure 6-1. Troubleshooting Flowchart - Power On Indicator Does Not Light ..................................................................... 6-16

Figure 7-1. Obtain Support PC IP Address for Softw are Update ............................................................................................. C-2

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List of Tables

Table 1-1. Furnished and Installer Supplied Items ..................................................................................................................... 1-2

Table 1-2. VMBR-1520 Mobile Broadband Router Specifications .......................................................................................... 1-4

Table 1-3. VMBR-1520 Front Panel Controls and Indicators ................................................................................................... 1-8

Table 2-1. Recommended Installation Tools and Test Equipment ........................................................................................... 2-9

Table 2-2. Rear Panel Connections and Components .............................................................................................................. 2-13

Table 2-3. ACU Port (J4) Pin Descriptions .............................................................................................................................. 2-14

Table 2-4. Console Port (J5) Pin Descriptions.......................................................................................................................... 2-15

Table 2-5. USER ENET Port (J8) Pin Descriptions ................................................................................................................. 2-15

Table 2-6. ACU ENET Port (J7) Pin Descriptions................................................................................................................... 2-16

Table 3-1. VMBR-1520 Set Up Quick Guide and Summar y .................................................................................................... 3-1

Table 5-1. VMBR-1520 Configuration Menu Cross Reference ................................................................................................ 5-1

Table 5-2. VMBR-1520 System Status Screen Definitions....................................................................................................... 5-8

Table 5-3. VMBR-1520 ACU Status Screen Definitions ........................................................................................................ 5-10

Table 5-4. VMBR-1520 Version Information Screen Definitions .......................................................................................... 5-12

Table 6-1. VMBR-1520 Maintenance Requirements Summary ............................................................................................. 6-13

Table 6-2. Special Tools and Test Equipment .......................................................................................................................... 6-13

Table 6-3. Fault Symptoms and Cross Reference .................................................................................................................... 6-15

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1-1

1. General Description

1.1 Section Overview

This section contains information about the VMBR-1520 (ViaSat)
Mobile Broadband Router, including a description of the Satellite
Network, an equipment list, and a description of the components
contained in the VMBR-1520.

1.2 Satellite Network

The VMBR-1520 is designed for use in the ArcLightTM Internet Protocol
(IP) based STAR topology Very Small Aperture Terminal (VSAT) network

as shown in Figure 1-1.

VMBR-1520 Mobil e Broadband Router Installation, Operation, and Maintenance Guide

General Description

Figure 1-1. Typical VSAT Network

The STAR network consists of a broadband spread spectrum Forward
Link (FL) transmission from a central hub to the Mobile Broadband
Routers, and individual, random access, spread spectrum Return Link
(RL) transmissions from the Mobile Broadband Routers to the central
hub. The Return Link signals can simultaneously overlay in the same
bandwidth as the Forward Link.

To recover the Return Link, the Mobile Broadband Router features two
ViaSat-proprietary technologies: Code Reuse Multiple Access (CRMA)
and Asymmetric Paired Carrier Multiple Access (A-PCMA).

The VMBR-1520 is expected to be installed as part of a Mobile
Terminal, along with the following additional components:

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1-2

Nomenclature

Remarks

General Description

- Satellite Antenna System (SAS): An SAS consists of a steerable
antenna, an Antenna Control Unit (ACU), and a Ku-band
transceiver. The Ku-band transceiver includes a Phase-Lock
Loop (PLL) Low-Noise Block Down-converter (LNB), a Ku-band
Block Up-converter (BUC), and a power amplifier;

- Intra-Facility Link (IFL): An IFL consists of coaxial cables
connecting the Mobile Broadband Router with the SAS. An
additional cable will be provided for power and communications
between the SAS and the Mobile Broadband Router.

1.3 Equipment List

Items furnished with each VMBR-1520 by ViaSat® are listed under
Furnished Items in Table 1-1. Other items required to complete the
installation and initial configuration are listed under Install er Supplied
Items in the table.

Table 1-1. Furnished and Installer Supplied Items

Furnished Items
VMBR-1520 Mobile Broadband Router
AC Power Cord North American Power Cord Included
Installer Supplied Items
VMBR-1520 Mounting Hardware Refer to Paragraph 2.3.2.
Antenna Subsystem Required.
IFL Cables Required to connect the VMBR-1520 to ACU and the

Antenna Subsystem.

CAT5 Shielded Ethernet cables Required to connect the modem to end-user network.

Length of cable determined by installer and/or end
user.

Personal Computer
Hardware:
Laptop recommended
Pentium® processor, 150 MHz min.
32 Mbytes RAM
Ethernet interface (100BASE-TX)
EIA-232 serial interface
Software:
Windows® 95, 98, Me, 2000, XP, or NT
Terminal emulation program

DB 9 EIA-232 null-modem serial cable
Female to Female (3 – 15 meters)

Spectrum Analyzer and RF Splitter Optional. A spectrum analyzer can be used to

Required for initial configuration set up and
maintenance

Required for installation, initial configuration, and
maintenance. Refer to Paragraph 2.3.3.3 for pinout.

monitor RF signal levels for initial configuration
and/or diagnosis.

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1-3

Note

The VMBR

-

1520 is

1.4 VMBR-1520 Mobile Broadband Router Overview

The VMBR-1520 (Figure 1-2) is a rack-mountable Mobile Broadband

completely self-contained,
and contains no user
serviceable parts.

Router which is designed for use in the ArcLightTM Internet Protocol (IP)
based STAR topology VSAT network. VMBR-1520 specifications are

listed in Table 1-2.
The VMBR-1520 contains the following features:

• Forward Link spread spectrum receiver, capable of
operating up to 10 Mbit/s downlink

• Return Link CRMA spread spectrum transmitter, capable
of operating up to 512 kbit/s uplink

• L-Band Intermediate Frequency (IF) interface to BUC and
LNB

• EIA-422 interface for communication with ACU

• Available 10 MHz reference for BUC and LNB

• Internal BUC power supply support

• BUC Voltage Select (0 V, 18 V, and 24 V)

• Universal AC power supply

General Description

Figure 1-2. VMBR-1520 Mobile Broadband Router

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General Description

Table 1-2. VMBR-1520 Mobile Broadband Router Specifications

Item Specification

Forward Link Receiver Return Link Transmitter

Modulator Specifications

Data Rates 500 kbit/s to 1 Mbit/s (100 kbit/s step)

Modulation & Code Rate s Offset Quadrature Phase Shift Keying

Forward Error Correction (FEC) Rate 1/3 Parallel Concate nated Convolutional Code (PCCC) Turbo Code
Link Performance 1.0 x 10-6 BER @ 2.0 dB Eb/N

Frequency 950 MHz to 2150 MHz 950 MHz to 1450 MHz

Frequency step size 250 kHz 250 kHz

Frequency accuracy ±0.1 µHz/Hz ±0.1 µHz/Hz
Transmit power level ----------------------- 0 dBm to –30 dBm in 0.1 dB steps

Receive power le vel -30 dBm to -65 dBm

Return loss >14 dB into 50 ohms >9 dB into 50 ohms

Internal Reference 80 MHz sine wave ±0.15 µHz/Hz
External Reference 10 MHz or 80 MHz, sine wave or clipped sine-wave, 0 dBm to +10 dBm

Reference Output 0 dBm to +5 dBm -5 dBm to +7 dBm

BUC Power ----------------------- 18 x (1 ± 5%) VDC, 1 A max.

Low-Noise Block Down-converter
(LNB) Power

1 Mbit/s to 3.5 Mbit/s (250 kbit/s step)

3.5 Mbit/s to 5 Mbit/s (500 kbit/s step)
5 Mbit/s to 10 Mbit/s (1 Mbit/s step)

Up to 5 Mbit/s in Spread Mode1
Up to 10 Mbit/s in Unspread Mode1

(OQPSK) or QPSK for Spread Mode
QPSK for Unspread Mode

0

Quasi-Error Free @ 2.2 dB Eb/N0

-12 dBm max. composite input

18 x (1 ± 5%) VDC, 700 mA max. -----------------------

IP Address

Modem IP Address Configured by network administrator, the default is 192.168.0.1/24

User Local Area Network (LAN)
IP Address Range

Wide Area Network (WAN) IP Address Configured by network administrator

Configured by network administrator
IP Address can be assigned by Built-in Dynamic Host Configuration Protocol (DHCP)
Server

Monitor & Control (M&C) Functions

Front Panel Interface AC Switch

Rear Panel Interface BUC Voltage Select

Light Emitting Diode (LED) for reporting AC Power, Satellite Link Status, BUC
Voltage, LAN Activity, and Fault

Interface

ACU Serial: EIA-422, 38.4 kbit/s

User Ethernet: IEEE 802.3 10BASE-T/100BASE-TX, 100 Mbit/s
Terminal Console Serial: EIA-232, 19.2 kbit/s, 8 Data Bits, No Parity Bit, 1 Stop Bit

32, 64, 128, 256, and 512 kbit/s1

Gaussian Minimum Shift Keying
(GMSK)

1.0 x 10-3 BER @ 2.25 dB Eb/N0

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

24 x (1 ± 5%) VDC, 4 A max.

1

This is the channel data throughput.

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Specification

Temperature

Humidity

Altitude

Vibration

Certification

/Age ncy Approval

IEC 60950

-

1 2nd

Ed. 2005

Input

100

VAC -

240

VAC,

50

Hz – 60

Hz, 3 A

Max.

Dimensions

1RU, 19

-

inch rack mountable with optional mounting

provisions

Mounting

Conforms to EIA

-

310

Mass 10.0 lbs. (

4.50

kg) Max.

General Description

Item

Environmental

Operating
Non-Operating/Storage

Operating
Non-Operating/Storage

Operating
Non-Operating/Storage

Operating

Shipping

Safety

Electromagnetic Compatibility
(EMC)

Power

Physical

Forward Link Receiver Return Link Transm itter

-5 °C to +55 °C at Sea Level

-35 °C to +70 °C

Up to 95% (non-condensing)
Up to 99% (non-condensing)

From -200 ft to 10 000 ft. at between -5 °C and +25 °C
50 000 ft.

Able to withstand ope rational vibration le vels as specified in MIL-STD-810F,
Method 514.5, Table 514.5C-VII and Figure 514.5C-1.

Able to withstand transportation vibration levels as specified in MIL-STD-810F,
Method 514.5, Table 514.5C-VII and Figure 514.5C-1.

EN 60950-1 2nd Ed. 2006
UL 60950-1 2nd Ed. 2007
CAN/CSA-C22.2 No. 60950-1 2nd Ed. 2007

Height: 1.719 in (4.37 cm)
Width: 16.75 in (42.55 cm)
Depth: 17.0 in (43.80 cm)

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General Description

1.4.1 VMBR-1520 Mobile Broadband Router Description

The VMBR-1520 consists of a FL spread spectrum L-band receiver and
a CRMA RL spread spectrum L-band transmitter. The VMBR-1520
provides interfaces for communications, monitoring, and control of the
FL and RL. All user data is sent and received through the User
Ethernet port. The VMBR-1520 communicates with the Antenna
Control Unit (ACU) via an Electronic Industries Alliance (EIA)/
Telecommunications Industry Association (TIA) RS-422 serial interface
to control the antenna sub-system. Finally, an EIA/TIA RS-232 serial
port (TXD/RXD only) is provided for attaching a console for access to
the VMBR-1520 for configuration and diagnostic purposes.

A block diagram of the VMBR-1520 is shown in Figure 1-3. The basic
components are described in the following paragraphs.

USER ENET (J8)

CPU

FPGA

CONSOLE (J5)

DAC

LO

Bias-T

Bias-T

Tx RF

(J2)

ACU (J4)

AC PWR (J1)

100 V to 240 V AC,

50 Hz to 6 Hz

Fans

80MHz

Power

Supply

Power
Supply

PCI

BUC

Bridge

DSP

Decoder

FPGA

Demod

FPGA

Figure 1-3. VMBR-1520 Functional Block Diagram

ADC

TXR

LFLR

Bias-T

LO

Rx RF

(J3)

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VMBR-1520 Mobil e Broadband Router Installation, Operation, and Maintenance Guide

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General Description

Power Distribution

The Power Supply accepts universal AC input - 100 VAC - 240 VAC,
50 Hz - 60 Hz, at a maximum current of 3 ampere. It is protected by a
250 V, 3 A, time-lag, circuit breaker which is part of the front panel AC
power switch. The AC switch controls the application of AC to the
Power Supplies. The Backplane uses Point-of-Load regulators to
convert the Power Supply output to the necessary DC voltages for
internal components.

Reference Signal

The VMBR-1520 contains a high-precision internal master reference for
all internal components. The reference is self contained and does not
require any configuration, calibration, or maintenance.

The VMBR-1520 provides a 10 MHz sine wave reference signal for the
BUC through the Tx RF port (J2), and for the LNB through the Rx RF
port (J3). The specifications for both reference signals can be found in
Table 1-2.

TXR

The TXR provides the transmit function for the Return Link, and also
serves as the command and control center of the modem. The
incoming user data enters the TXR through the User Ethernet port (J8).
User data comes in the form of TCP/IP packets. The TXR processes the
packets into a baseband data stream. The baseband data goes through
Forward Error Correction (FEC) encoding, filtering, symbol mapping,
and digital-to-analog (D/A) signal conversion. The D/A outputs, which
contains the in-phase (I) and quadrature (Q) analog waveforms, go
through a quadrature modulator to be upconverted to L-Band. The L­Band Tx RF signal is then multiplexed with a 10 MHz reference and DC
power for the BUC before being applied to the Tx RF port (J2).

As the command and control center of the modem, the TXR configures
and controls the Forward and Return Link parameters, such as
frequency, data rate, etc. It also monitors the condition of the modem
and alerts the user in case of a fault condition.

Initial configuration and diagnostics of the modem is provided through
the console port (J5) on the TXR.

LFLR

The LFLR provides the receive function for the Forward Link. The
Forward Link is received from the antenna and passed to the modem as
an L-Band signal through the Rx RF port (J3). The Rx RF signal is
demodulated into baseband in-phase (I) and quadrature (Q) analog
waveforms. The I and Q signals go through analog-to-digital (A/D)
conversion, symbol mapping, filtering, FEC decoding, and re­construction back into TCP/IP packets. The packets are transmitted to
the TXR where they will be sent to the user via the User Ethernet port
(J8). A 10 MHz reference and +18/12 V DC are provided to the antenna
LNB through the Rx RF port (J3).

Receive Signal Strength Indicator (RSSI) is provided by the LFLR to the
ACU through the ACU EIA-422 port (J4).

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Item Function

Power

Preparation for Use and Installation

1.4.2 VMBR-1520 Front Panel Controls and Indicators

The VMBR-1520 front panel contains the controls and indicators shown
in Figure 1-4, and described in Table 1-3.

Figure 1-4. VMBR-1520 Front Panel

Table 1-3. VMBR-1520 Front Panel Controls and Indicators

AC Switch The main AC Power Switch for the modem. Flip the switch up to turn the

modem on, and down to turn the modem and off.

Status LEDs

PWR LED lights blue when power is applied.
BUC LED is off if BUC Switch (SW6) is set to 0 V.

LED lights green if BUC SEL Switch (SW6) is set to 18 V.
LED lights amber if BUC SEL Switch (SW6) is set to 24 V.

SAT LED blinks green when the modem has acquired the Satellite Forward Link.

LED lights green when the modem has logged into the ArcLight network.
LED blinks amber when the modem transmits on the Return Link.

LAN LED lights green when a link is established on the User Ethernet port (J8).

LED blinks amber when there is activity on the User Ethernet port (J8).

FAULT LED lights red when there is an internal failure of the modem or if there is

no forward link lock.

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Preparation for Use and Installation

2. Preparation for Use and Installation

2.1 Introduction

This section contains information for VMBR-1520 installation,
including recommended tools and test equipment, unpacking and
inspection, installation procedures, and connections. Items required for
setup, and operation are supplied by both the customer and ViaSat® as
listed in Table 1-1.

2.2 Tools and Test Equipment

Installation of the VMBR-1520 requires tools, test equipment, and
software as listed in Table 2-1. Items equivalent in function to those
listed may be substituted except for ViaSat® proprietary software.

Table 2-1. Recommended Installation Tools and Test Equipment

Part No Descript ion Manufacturer

Various Screwdriver, Phillips head, 6-in, nos. 1 and 2 Any
Various Screwdriver, flat-tip, 6-in, ¼ and ⅛-in blade Any
Various Personal computer with Ethernet and serial port Refer to Table 1-1.

Fluke 22 or equivalent Digital volt/ohm meter Fluke Corporation

HP8590 or 8560

series or equivalent

----- Various coaxial connectors as required Any

----- Crimp tools as required Any

Spectrum analyzer Hewlett Packard

Rev. 001 1075152