User Manual

Table Of Contents
Verizon Base Unit User Guide Rev B PRELIMINARY 3/20/2014 Tech-X Flex
®
(P5)
5-16
Intro
Wi-Fi
10/100
System
IP/Video
Specs
For any given interface, note that testing support may vary according to limitations specific to that
interface. Where appropriate, this documentation notes those variations.
Specific video functions include:
Video QoS (Quality of Service) on page 5-16
Change Channel on page 5-43
Channel Guide Settings on page 5-45
5.9.1 Video QoS (Quality of Service)
NOTE: Video testing is a purchasable option. Please contact Spirent for more information.
This test provides subjective no-reference quality scores and MDI calculations 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 initiate/join the stream, after
which it performs the quality assessment on the traffic sent directly to it. Some interfaces, such as the
10/100/1G interface, provide a bridging/mirroring mechanism where the unit can be placed between two
devices and passively monitor an existing stream. For more information on how the passive bridging
process works with the Ethernet interface, see Unit setup for passive testing on page 3-5.
For more details on how the quality assessment works, see How the analysis works - An overview on
page 5-37.
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 5-31, including About MPEG transport on page 5-33.
Setup - Video QoS
Note the following: