User's Manual
Table Of Contents
- 1: Introduction
- 1.1 Documentation notes
- 1.2 Product introduction
- 1.3 General product handling and operation
- 1.3.1 Powering on/off and sleep mode
- 1.3.2 Attaching, detaching, and handling modules
- 1.3.3 Attaching the Wi-Fi antenna
- 1.3.4 Attaching the strap
- 1.3.5 About the touchscreen display
- 1.3.6 Selecting the active interface
- 1.3.7 Starting a function or test
- 1.3.8 Stopping a test
- 1.3.9 Saving results
- 1.3.10 Interpreting results
- 1.4 Maintenance
- 1.5 Technical support
- 2: Wi-Fi Testing Menu
- 3: 10/100 Testing Menu
- 4: System Menu
- 5: IP and Video Testing
- 5.1 IP Network Setup
- 5.2 Connection Information
- 5.3 Ping
- 5.4 Traceroute
- 5.5 Web Browser
- 5.6 IP Video testing
- 6: Specifications
Base Unit User Guide Issue 1 Tech-X Flex™
5-8 5: IP and Video Testing
Intro
Wi-Fi
10/100
System
IP/Video
Specs
• Channel Guide/Network Setup on page 4-5 (System menu)
• Video Quality of Service (QoS) on page 5-8
• Channel Change Time on page 5-30
5.6.1 Video Quality of Service (QoS)
NOTE: Video testing is a purchasable option. Please contact Spirent for more information.
This test provides subjective no-reference quality scores on a specific IPTV channel stream, along with a
set of network parameters, picture frame statistics, and other transport stream information.
For a single-ended, active test, the unit must emulate a video endpoint and join a multicast stream, after
which it performs the quality assessment on the traffic sent directly to it. Some interfaces, such as the
10/100 interface, provide a bridging/mirroring mechanism where the unit can be placed between two
devices and passively monitor an existing stream. In this case, the unit does not join the stream itself and
therefore supports the measurement of unicast streams as well. For more information on how the
passive bridging process works with the Ethernet interface, see Unit setup for passive testing on
page 3-4.
For more details on how the quality assessment works, see How the analysis works - An overview on
page 5-27.
NOTE: The analysis focuses primarily on the data captured from the MPEG transport stream. For more
information about MPEG transport, see the information under Digital video concepts overview
on page 5-20, including About MPEG transport on page 5-23.
Setup - Video Quality of Service
NOTE: If the unit has an active channel guide, the display will first present a channel selection screen
when the test setup is initiated. After channel selection, the normal setup screen will appear,
with the certain parameters prepopulated, such as the IP Address and Port. The use of a
channel guide, if available, is generally recommended. For more information, see Channel
Guide/Network Setup on page 4-5.