User's Manual

Chapter 12 IP Video Testing
Specifying test settings
SmartClass TPS User’s Guide
98 22035456, Rev 001 May 2014
b Specify the settings.
The following table describes the settings.
3 On the Video Setup menu, select QoS Thresholds, and then specify the settings.
The quality of service (QoS) measurement uses two thresholds – good and poor – to produce
three quality ratings: good, poor, and fair. If the value is less than the good threshold, it is
considered good and is indicated with a check mark. A value between good and poor is
considered fair and is indicated by an exclamation mark. If the value is greater than the poor
threshold, it is considered poor and is indicated by an X.
Additionally, RFC 2680 and RFC 3357 define enhanced analysis methods that are used to
measure the quality of a media stream. There are two main statistics for this: Loss Period and
Loss Distance.
The following table describes the settings.
Setting Description
Stream Type Select the video stream type:
– Broadcast Auto
– Broadcast MPEG2-TS/UDP
– Broadcast MPEG2-TS/RTP/UDP
– Broadcast RTP/UDP
– Broadcast Rolling Stream
– RTSP MPEG2-TS/(RTP)/UDP
– RTSP RTP/UDP
– RTSP RTP/TCP
IP Enter the IP address of the stream. (Not available for RTSP screams.)
Port Number Enter the port number of the stream. (Not available for stream type “Broadcast
Auto” or RTSP streams)
URL Enter the URL for the stream. (Only available with RTSP streams)
Setting Description
Latency Good Enter the Pass threshold, in milliseconds.
Latency is the amount of time between sending the “join” message
and receiving the first video packet on the STB.
Latency Poor Enter the Fail threshold, in milliseconds.
Leave Latency Good Enter the Pass threshold, in milliseconds.
Leave Latency is the amount of time between sending the “leave”
message and receiving the last video packet on the STB.
Leave Latency Poor Enter the Fail threshold, in milliseconds.
Jitter Good Enter the Pass threshold, in milliseconds.
Jitter Poor Enter the Fail threshold, in milliseconds.
Loss Good Enter the Pass threshold, in milliseconds.
Loss Poor Enter the Fail threshold, in milliseconds.
MPEG2-TS Error Ind. Good Enter the Pass threshold.
MPEG2-TS Error Ind. Poor Enter the Fail threshold.