C 130 0hm Hatch Mount Terminal Datasheet 012

User Manual: C-130

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VMT-1220HM C-130 Hatch-Mount Terminal
Broadband IP In-Flight Satellite Access

The ViaSat® VMT-1220HM Hatch-Mount Terminal provides
affordable, 2-way, “always-on” broadband IP access via satellite
to C-130 aircraft while stationary, taxiing or in flight.
The ViaSat VMT-1220 Hatch-Mount Terminal, (VMT1220HM), provides roll-on/off Ku-band broadband satcom
for C-130 aircraft while on the tarmac or in flight. The
VMT-1220HM series supports channel speeds of up to 10
Mbps from the hub gateway to the aircraft and up to 1024
kbps from the aircraft to the hub.
The VMT-1220HM features a roll-on/off design for simple
installation and dismantling. A single crew member can
quickly install the terminal in the aircraft hatch. It can be
easily removed in flight or during an emergency by one
crew member to allow smoke exhaust or personnel egress.
The VMT-1200HM is provided in ready-to-ship packaging
for easy transporting.
Based on field-proven and certified ArcLight® technology,
this small aperture terminal operates within FCC and ITU
regulatory guidelines for adjacent satellite interference. The
waveform is robust against intermittent blockage, allowing
applications to run without interruption.
Part of the family of ViaSat ArcLight-based Mobile Satcom
Systems, VMT-1220HM-equipped aircraft can seamlessly
coexist with ground vehicle, maritime, and helicopter
terminals on the ArcLight COTM network. This satellite
networking technology and equipment are at the heart
of a Command and Control On-the-Move (C2OTM)
satellite communication system that has been granted
interoperability certification by the U.S. Department of
Defense (DoD) Joint Interoperability Test Command
(JITC). The system is in operational use on multiple C-130
aircraft.
This broadband IP access satisfies many customer needs—
including command and control, emergency response,
streaming video, situational awareness, Intelligence Surveillance, and Reconnaissance (ISR), web access, client-server
applications, and voice, video and data communications —
all while in flight.

SYSTEM AT A GLANCE
FCC/ITU-compliant On All Satellites
• Reliable Ku-band communication, without harmful adjacent satellite
interference issues, enabled by spread spectrum waveform
• Increased network efficiency through mobile terminal burst transmission
• Optimized capacity enabled by closed loop power control and
advanced network management
Secure Broadband IP Network Access
• Up to 10 Mbps shared forward channel rate (into the aircraft)
• Up to 1024 kbps individual return channel burst rate (from the aircraft)
• Protected IP traffic with HAIPE® Type 1 encryption
Flexible Design for Aircraft Requirements
• Airworthiness certified by USAF
• Roll-on/off capability for use on different C-130 aircraft
• Center hatch standard; forward hatch optional
• Mount/dismountable in minutes by single crew member
while on the ground or in flight
• Integrated Inertial Reference Unit (IRU) provides accurate satellite
tracking in all mission phases
• Operates from aircraft and ground power
• Integrated UPS allows seamless transition from aircraft to GPU
Service Options
• Dedicated or shared hub service through ViaSat or ViaSat's partners
• Organic capability can be provided with purchased hub and
user-supplied transponder bandwidth

VMT-1220HM C-130 Hatch-Mount Terminal
The VMT-1220HM is a complete terminal — just bring your user equipment: laptop computers, telephones, VoIP phones, or any
IP-based equipment. The terminal includes all necessary equipment for powering the unit from the aircraft’s 400Hz electrical source.
The VMT-1200HM can also be operated from ground power. A high-precision inertial reference unit is included to provide navigation data to the antenna control unit for tracking. The inertial reference unit has quick-release mounts underneath the hatch.
The terminal provides black and red routers, HAIPE Type 1 encryption, and TCP/IP acceleration to ensure that applications using
TCP/IP achieve maximum speed over the satellite link.
Other hatch-mount and permanent-mount configurations are available.

SPECIFICATIONS
OPERATING FREQUENCIES
Transmit:

14.0 – 14.5 GHz

BASEBAND INTERFACES

Receive:

11.55 - 12.75 GHz, (optional 11.45 - 12.65 GHz)

Data:

10/100BaseT Ethernet

Console:

RS-232 and Ethernet (via telnet)

MODULATION AND FEC
Forward Link Rx:

(O)/QPSK spreading, BPSK data

OTHER FEATURES

Return Link Tx:

GMSK spreading, BPSK data

Encryption:

Spread Factors:

Return Link: 4 to 150; Forward Link: 1 to 23

Type 1 HAIPE (KG-250);
FIPS 140-2 (128, 192 or 256 bit AES) optional

FEC:

R=1/3 Turbo

Acceleration:

TCP/IP Performance Enhancing Proxy

Min. Req. Eb/No:

1.7 dB (FW Rx); 2.25 (Ret Tx) to achieve
Quasi-Error Free (QEF)

Router:

Cisco Systems 2811 router

Multiple Access:

TDM (FW Rx); CRMA spread ALOHA (Ret Tx)

Freq. Reuse:

Paired Carrier Multiple Access (PCMA)

POWER
Input:

ENVIRONMENTAL AND PHYSICAL

TRANSMISSION RATES
Return Link Tx:

32, 64, 128, 256, 512, 1024 Kbps burst rates

Forward Link Rx:

500 Kbps to 10 Mbps

Operating Temp:

-55° to 65° C (hatch with antenna);
0° to 40° C (IRU and in-aircraft equipment)

Weight:

44 lbs (hatch with antenna);
12 lbs (IRU with quick-release mount);
206 lbs (in-aircraft equipment)

Size:

24"H x 30" base diameter (hatch with antenna);
20"H x 23"W x 36"D (in-aircraft equipment)

RF/TRACKING PERFORMANCE
EIRP:

39.5 dBW minimum

G/T:

9 dB/K minimum

Polarization:

Selectable horizontal/vertical linear polarization

Coverage:

360° azimuth; 5° – 85° elevation

Tracking:		
Azimuth
Rates
30°/s
Acceleration 30°/s2

ViaSat, Inc.
6155 El Camino Real
Carlsbad, CA 92009

120 Volts Single Phase AC 47-450Hz, max 950 W

Elevation
20°/s
30°/s2

Polarization
20°/s
30°/s2

Tel:
+1.760.476.2432
Email: gov.satcom@viasat.com
www.viasat.com

Boston 5 Mount Royal Avenue, Marlborough, MA 01752, Tel: +1.508.624.6000, Fax: +1.508.624.9000
Canberra Mailbox 10, 18 Brindabella Circuit, Canberra Airport ACT 2609, Australia, Tel: +61 2 6163 9210, Fax: +61 2 6162 2950
San Diego 6155 El Camino Real, Carlsbad, CA 92009, Tel: +1.760.476.2200, Fax: +1.760.929.3941
Washington, D.C. 1101 Wilson Blvd., Suite 1201, Arlington, VA 22209, Tel: +1.703.248.9662, Fax: +1.703.243.8073
Copyright © 2007-2008 ViaSat, Inc. All rights reserved. Printed in the USA. ViaSat, the ViaSat logo, and ArcLight are registered trademarks of ViaSat, Inc. HAIPE is a registered trademark of the National Security Agency. All other trademarks
mentioned are the sole property of their respective companies. Specifications and product availability are subject to change without notice.



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