Scientific Atlanta Explorer 3250HD User manual

Description
Scientific-Atlanta’s Explorer3250HD™High-Definition
Interactive Set-Top merges high-definition video capability
and broadband digital video services to deliver a broad
range of entertainment, information, and communications
services.
The 3250HD decodes all 18 ATSC digital video formats,
including the 6 high-definition (HD) digital formats for
HDTV. All standard-definition digital formats and all analog video services
are decoded as well. This comprehensive level of decoding capability
in one set-top box enables cable service providers to quickly scale
HDTV video services for both analog and digital consumers.
The 3250HD can output video to the HDTV display in four resolutions:
480i, 480p, 720p, or 1080i. These resolutions, or scan rates, allow consumers
to select the scan rate best suited for their HDTV set. Consumers can
stretch and zoom the video picture to maximize its viewable area on the HDTV display.
For added connectivity, the 3250HD offers optional loop-through that provides
a set of component HDTV inputs, a composite video input, and both analog audio
and optical digital audio inputs. A consumer with limited inputs on their HDTV
can use the loop-through connectivity feature on the 3250HD to connect additional
electronic devices.
(continued on page 2)
Features
166 MIPS Processor
Integrated DAVIC Cable Modem
8 MB Flash Memory, or 16 MB available as an option
16 MB Applications DRAM, or 32 MB available as an option
16 MB Media DRAM
4 KB NVM
Analog Component HDTV Outputs
Composite Audio/Video Outputs
S-Video Output
Digital Audio Outputs (RCA and Optical)
Front Panel USB Port
Ability to Process All Analog and Digital Services
IR Port for VCR Commander™ Service
Subscriber Networks
Explorer3250HD™
High-Definition Interactive Set-Top

Explorer 3250HD High-Definition Interactive Set-Top
2
Description, continued
The 3250HD makes it easy to maximize
the screen image for non-HD channels.
For a widescreen HDTV set, simply
click “stretch” and then “zoom” from
the Quick Settings menu on the
3250HD set-top.
To meet the demands of existing and future network configurations, the
3250HD offers power, capacity, and compatibility. The integrated internal
DAVIC cable modem allows the 3250HD to communicate instantly with the
cable headend to promote a broad range of interactive entertainment,
information, and communications services. Over 40 MB of application and
program memory, along with the 166 MHz RISC microprocessor, manage
multiple program tasks and applications with speed and power. The USB port
offers fast interconnectivity to consumer peripherals.
Optional Features
16 MB Flash Memory
32 MB Applications DRAM
DVI 1.0 Digital HDTV Output
IEEE 1394 Digital Outputs
Loop-Through Connections for Component HDTV, Composite Video, and
Analog and Digital Audio
IR Blaster Cable
IR Extender Cable
RF Bypass
Universal AllTouch®Remote Control: AT8400, AT8450, *AT8550, AT2400,
or AT2300
To maximize the screen image for a
standard 4:3 HDTV set, simply change
the scan rate to 480i using the Quick
Settings menu on the 3250HD set-top.
Taping an HD broadcast to an analog VCR is seamless with the 3250HD.
The set-top simultaneously displays the HD image and downconverts it to SD
(standard definition) through the NTSC outputs.
The optional VCR Commander Service integrates the interactive TV program
guide with the VCR so that consumers simply point-and-click to setup and
record programs.
3250HD rear
p
anel showin
g
o
p
tional IEEE 1394 di
g
ital out
p
uts
3250HD rear panel showing optional loop-through connections

Explorer 3250HD High-Definition Interactive Set-Top
3
Specifications
Feature Benefits
Analog Component HDTV Outputs Provides YPbPr outputs for quick and easy connection to most HDTV sets
Dual Audio Outputs with Composite
Video Output Allows simultaneous connection to the audio inputs on the HDTV as well as the audio and video inputs on a VCR
DAVIC Reverse Path Data
Transmitter Allows IP-based, real-time two-way communication between the 3250HD and the headend
Enables cable service provider to offer two-way services such as Internet
browsing, video-on-demand (VOD), subscription VOD (SVOD), e-mail, and
real-time chat
MPEG-2 MP@HL Digital Video Allows decompression and presentation of audio and video
Decompression Delivers video resolutions up to 1920 x 1080
DolbyDigital Audio and MPEG-1
Audio Support Supports leading digital audio standards
PowerKEY®Conditional Access
System Provides digital security using an RSA encryption algorithm that
mathematically matches pairs of keys
PowerTV®Operating System with
HTML Client Engine Offers stable operating system and open Application Programming
Interfaces (APIs) to support native applications and third-party middleware
applications
Allows upgrades using a network download
Enhanced Graphics Engine Displays up to 65,000 colors simultaneously
Enables high-resolution 640 x 480 IPG graphics while simultaneously
scaling MPEG-2 video
Automatic Scaling of MPEG-2 Video
for IPG Window
Powerful 32-bit RISC Processors Features a 166 MHz (166 MIPs) processor to perform tasks and applications
quickly
Over 40 MB Memory 8 MB Flash, or 16 MB available as an option
16 MB Applications DRAM, or 32 MB available as an option
16 MB Media DRAM
4 KB NVM
64 and 256 ITU J.83 Annex B QAM
Support Supports open standards for QAM delivery and demodulation
Analog and Digital Service Tuner Allows both analog and MPEG-2 digital channels to be tuned and displayed
DAVIC Compliant Integrated Cable
Modem Provides a high-speed data forward path to the 3250HD
Both Internal Security
Microprocessor and Smart Card Slot Provide hardware-assisted conditional access options with capability to upgrade the security, if ever needed
MacrovisionCopy Protection
Support Activation allows cable operators to add another layer of copy protection
software, called Macrovision, that restricts subscribers from copying
protected transmissions such as VOD and SVOD to the analog composite
outputs (continued on page 4)
Scales MPEG-2 video for optimal viewing in
the IPG window regardless of whether the
subscriber is watching an HD or SD channel
on either a widescreen or standard 4:3 TV

Explorer 3250HD High-Definition Interactive Set-Top
4
Specifications, continued
Feature Benefits
Universal Serial Bus (USB) Interface Front panel USB port allows easy interconnection with home consumer
devices such as USB keyboards
BTSC/SAP Decoder Provides stereo sound on analog channels through the baseband left and
right outputs
S/PDIF Digital Audio Interface Supports interconnection with surround sound receivers using coaxial and
optical type connectors
Integrated VCR Commander Service Automates the recording of selected video programs; requires IR Blaster
Cable
Provision for Name Branding Allows you to brand the 3250HD with your company name and logo
Optional DVI 1.0 port with HDCP (High-Bandwidth Digital Content
Protection) supports digital connection to an HDTV set supporting the DVI
interface
Optional DVI 1.0 Digital HDTV
Output with Support for HDCP
HDCP provides a copy protection interface between the 3250HD and HDTV
set
Optional dual IEEE 1394 outputs with DTCP (Digital Transmission Content
Protection) provide a 400-Mbps digital interconnection to a 1394-equipped
HDTV
Optional Dual IEEE 1394 Digital
Outputs with DTCP Copy Protection
The 1394 ports provide a copy protection interface between the 3250HD
and the connected consumer device
Optional Analog Component HDTV
Inputs Provides YPbPr inputs, composite video input, and digital and analog audio loop-through for quick and easy connection to a DVD player
Optional RF Bypass Allows the video signal to internally bypass the 3250HD to an SD input on
the HDTV set
Optional RGB Adapter Converts the video from the YPbPr output into an RGB format with
horizontal and vertical sync for HDTVs requiring the RGB input signal
Ordering Information
Contact your Sales Representative for product availability in your area.
Part Number Description
4000768 Explorer 3250HD High-Definition Set-Top (8 MB Flash / 16 MB DRAM Memory)
with Optional DVI 1.0 Digital HDTV Output
4001332 Explorer 3250HD High-Definition Set-Top (8 MB Flash / 16 MB DRAM Memory)
with Optional DVI 1.0 Digital HDTV and Optional IEEE 1394 Digital Outputs
4004367 Explorer 3250HD High-Definition Set-Top (16 MB Flash / 32 MB DRAM
Memory) with DVI 1.0 Digital HDTV Output
4005726 Explorer 3250HD High-Definition Set-Top (16 MB Flash / 32 MB DRAM
Memory) with DVI 1.0 Digital HDTV and Optional IEEE 1394 Digital Outputs
4006584 Explorer 3250HD High-Definition Set-Top (16 MB Flash / 32 MB DRAM
Memory) with DVI 1.0 Digital HDTV Output and Analog Component Video and
Audio Loop-Through Inputs (continued on page 5)

Explorer 3250HD High-Definition Interactive Set-Top
5
Ordering Information, continued
Description Product Photo Part Number
Optional IR Blaster Cable (8 ft)
735994
Optional IR Extender Cable
1001807 (12 ft)
4006725 (25 ft)
Optional RF Bypass 544345
Optional RGB Adapter, sold in
packages of five (cables sold
separately) 749790
RGB Adapter Cable with RCA-to-
RCA Connectors (8 ft)
749976
RGB Adapter Cable with RCA-to-
VGA Connectors (8 ft)
749978
RGB Adapter Cable with RCA-to-
BNC Connectors (8 ft)
749977
Spare YPbPr and Audio Left/Right
Cable Kit (10 ft) 1000944
AllTouch, Explorer, PowerKEY, PowerTV, Scientific-Atlanta, and the Scientific-Atlanta logo are registered trademarks of
Scientific-Atlanta, Inc.
3250HD and VCR Commander are trademarks of Scientific-Atlanta Inc.
Dolby is a registered trademark of Dolby Laboratories.
Macrovision is a registered trademark of Macrovision Corp.
All other trademarks shown are trademarks of their respective owners.
Specifications and product availability are subject to change without notice.
2004 Scientific-Atlanta, Inc. All rights reserved.
Scientific-Atlanta, Inc.
1-800-722-2009 or 770-236-6900 Part Number 4005304 Rev B
www.scientificatlanta.com August 2004