EXFO VDSL2 - Manual (Page 207)

IPTV Analysis
Copper, VDSL2, ADSL2+, and IP Triple-Play Test Set 199
Reading Results
Stream Parameters
The Stream Param tab allows you to view the detected video Stream
Rates and the PASS/FAIL status of the multicast IP address assigned to the
specific video channel or Analyzed Stream.
The available test results are the
following:
³
IP Packet is the IP data rate for the
IPTV service, for the selected
channel.
³
Transport Rate is the bit rate
calculated based on the program
clock reference (PCR).
³
Null Packet Rate is the rate calculated for MPEG2-TS null packets. Null
packets are defined as having no data.
³
MDI is the media delivery index (MDI) or IP cumulative jitter and
packet loss rate for the video stream.
³
DF(Ave) is the average delay factor (DF) or the average amount of time
the video must be delayed in the virtual buffer due to cumulative IP
packet jitter and IP packetization.
³
DF(Min) is the minimum delay factor (DF) or the minimum amount of
time the video must be delayed in the virtual buffer due to cumulative
IP packet jitter and IP packetization.
³
DF(Max) is the maximum delay factor (DF) or the maximum amount
of time the video must be delayed in the virtual buffer due to
cumulative IP packet jitter and IP packetization.
³
VB(Min) is the minimum virtual buffer (VB).
³
VB(Max) is the maximum virtual buffer (VB).