DirecTV A3-KaKu HD Installationsanleitung

Confidential & Proprietary

A3-KaKu Installation Training, Process

and Set Up

1. Classroom (you will need a Projector, Power point, Television and VCR)

1. Go over Power point presentation with trainers and “Advanced

Product Technicians”

2. Show Training Video and complete assessments

2. “Hands on” (you will need Tools and equipment , New Ka/Ku Satellite Dish,

New Ka/Ku 6x8 Multi-switch (if/when available)., Signal meter such as a

Acutrac PRO 22 or BirDog (with new KaKu files installed www.Birdog.TV ), 2”

NPRM or pole mount, New H20 Receiver and Television

1. Have selected technicians (rotate through groups) mount and peak

the Ka/Ku ODU, in designated area (parking lot) with 6x8 Ka/Ku

multi-switch (if/when available).

Confidential & Proprietary

Objectives

• Train technicians on basic Ka technology

• Train technicians to successfully complete an

A3-KaKu ODU installation and upgrade

• Train technicians to assemble KaKu ODU

• Train technicians on mounting options of

KaKu ODU

Confidential & Proprietary

Objectives (cont)

• Train technicians on ODU peaking methods,

including Dithering (fine tuning)

• Train technicians on how to install H20 HDTV IRD

• Train technicians on the use of the BBC (B band

converter) for use with All H20 IRD's

Confidential & Proprietary

What is Ka?

• What is Ka?

• The Ka band uplink uses frequencies between 27.5Ghz and

31Ghz and the downlink uses frequencies between 18.3 and

18.8Ghz and between 19.7 and 20.2Ghz.

• Ka band dishes are much smaller than C band dishes. Ka

band dishes vary from 2' to 5' in diameter.

• Ka band satellites typically transmit with much more power

than C band satellites.

• The higher frequencies of Ka band are significantly more

vulnerable to signal quality problems caused by rainfall,

known as rainfade.

Confidential & Proprietary

What is A3 and MPEG4?

• What is A3

• A3 stands for Advanced Modulation, Advanced Coding and

Advanced Compression. It is a new technology that will

allow DIRECTV to offer more high-definition (and ultimately

standard) channels.

• What is MPEG4

• MPEG4 is the most recent version of a standard for the

digital representation of video, audio and certain types of 3D

information. It processes detailed 3D representation for

faces, human bodies and general 3D scenes. The 3D scene

representation points to the VRML (Virtual Reality Modeling

Language) standard as it's representation.

Confidential & Proprietary

New mounts

• Why do we need a new precision mount?

• The new Ka orbital slots at 99° and 103° are centered

symmetrically around the existing DIRECTV 101° slot

• Another satellite company will be operating two future Ka

orbital slots that are very close spaced to our new 99° and

103° Ka slots.

• If the DIRECTV Ka/Ku antenna is not precisely aligned, the

other guys Ka orbital slots will interfere with DIRECTV Ka

programming

• The other Ka satellites are not on-line yet and incorrectly

installed DIRECTV Ka/Ku systems may not show up for

some time.

Confidential & Proprietary

New Mount

Azimuth

Fine-Tune

Elevation Fine-Tune

Confidential & Proprietary

Things You Should Know

• The Ku and especially the Ka portion of the antenna

have a narrower beam width than previous DIRECTV

antennas.

• The Ka/Ku antenna requires over 10 times more

alignment accuracy than previous DIRECTV ODUs

• Complete Ka and Ku alignment is performed using

only the 101° and 119° Ku slots.

• A “Dithering” method is used to precisely align the

antenna by symmetrically detuning the antenna and

finding identical signal levels either side of peak.

Confidential & Proprietary

Review Questions

• What is Ka?

• What is MPEG4?

• Why is a new mount needed?

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