User Manual
Table Of Contents
- 1: Introduction/Overview
- 1.1 Documentation notes
- 1.2 Important safety note
- 1.3 Product introduction
- 1.4 General product handling and operation
- 1.4.1 Protection from water and dust ingress
- 1.4.2 Powering on/off and sleep mode
- 1.4.3 Attaching, detaching, and handling modules
- 1.4.4 Attaching the strap
- 1.4.5 About the touchscreen display
- 1.4.6 Selecting the active interface
- 1.4.7 Running a function or test
- 1.4.8 Repeating a function or test
- 1.4.9 Screen title bar buttons/icons
- 1.4.10 Capturing a screen image (screenshot)
- 1.4.11 Stopping a test
- 1.4.12 Saving results
- 1.4.13 Maximum test duration for continuous tests
- 1.4.14 Interpreting results
- 1.4.15 Important MoCA module compatibility note
- 1.5 Remote control of the unit
- 1.6 Licensed feature details
- 1.7 Maintenance
- 1.8 FTP information
- 1.9 Technical support
- 2: Wi-Fi Testing Menu
- 3: 10/100/1G Testing Menu
- 4: System Menu
- 4.1 Record Manager
- 4.2 Admin Port
- 4.3 Set Date and Time
- 4.4 Sync with PC
- 4.5 Version Info
- 4.6 Battery Status
- 4.7 Download IPTV Channel Guide
- 4.8 Cal Touchscreen
- 4.9 Licensed Options
- 4.10 Update Firmware
- 4.11 System/Module Settings
- 4.11.1 System/Module Settings > Base Unit
- 4.11.2 System/Module Settings > RF Video Module
- 4.11.3 System/Module Settings > ADSL/VDSL2 Module
- 4.11.4 System/Module Settings > Combined Module Default
- 4.11.5 System/Module Settings > MoCA Module
- 4.11.6 System/Module Settings > DOCSIS Module
- 4.11.7 System/Module Settings > CSM Module
- 4.11.8 System/Module Settings > MoCA-RF Module
- 4.11.9 System/Module Settings > Wi-Fi
- 4.12 Taskforce
- 4.13 Signature Capture
- 4.14 Language Selection
- 4.15 Help and Support
- 5: IP and Video Testing
- 5.1 IP Network Setup
- 5.2 Connection Info
- 5.3 Ping
- 5.4 Traceroute
- 5.5 Web Browser
- 5.6 Packet Loss Test
- 5.7 Throughput
- 5.8 Speedtest
- 5.9 IP Video testing
- 5.9.1 Video QoS (Quality of Service)
- 5.9.2 Change Channel
- 5.9.3 Channel Guide Settings
- 6: Specifications
Tech-X Flex
®
(P5) Verizon Base Unit User Guide Rev B PRELIMINARY 3/20/2014
5-33
Intro
Wi-Fi
10/100
System
IP/Video
Specs
Figure 5-14 Compressed video stream frames
Audio compression
Audio compression has some similarity to video compression, in that techniques may be used to
eliminate redundant data. Furthermore, audio exhibits the concept of “masking,” where one frequency
may mask another and the human ear is unable to perceive it. Because it is unnecessary to transmit any
data for sounds that will never be heard, the removal of this data from the original audio stream provides
further possibilities for data reduction.
Additional details of encoding, decoding, and compression algorithms are complex and beyond the
scope of this document.
About MPEG transport
The MPEG standards refer broadly to a set of protocols for transporting compressed audio/video
programs over a communications network, such that a decoder can properly reconstruct the audio/video
programs at the destination. It is overseen by the Moving Picture Experts Group
(http://www.chiariglione.org/mpeg/).
A fundamental concept of MPEG transport is the “program,” the higher-level entity that end users receive
when they select a “channel.” Fully-decoded, an MPEG program is the entire dataset required to present
a single multimedia experience to the user, such as the complete and synchronized audio/video streams
required to watch a single IPTV channel.
The preparation of the audio/video programs has two fundamental stages:
I frames P frames B frames