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To set up the mode, press the F1 / Settings key. The following parameters from the
dropdown menu are available for editing:
1) IP address. IP address of the network node, at which ICMP echo requests are to
be sent;
2) Continuously. Enabling/disabling of the continuous request sending mode until
manual stop: On, Off;
3) Packets quantity. Number of echo requests to be sent: 1...10000. The parameter
is available for editing if the continuous request sending mode is disabled;
4) Packet length. Data field size of ICMP echo request in bytes: 0...65500;
5) Interval. Request sending interval in seconds: 1...60 sec.
In case the IP address of the remote node is not known, it can be determined using
the domain node name by pressing the F2 / Find IP key. Specify the full domain node
name in the popup field. If the IP address is detected, it will be indicated on the screen, as
well as set in the mode settings. To find the IP address, the Analyzer needs access to the
DNS network server (section 4.10.5).
The testing is started by pressing the F6 / Start key. The testing is stopped
automatically after sending of the number of requests specified in the settings, or manually
by pressing the F6 / Stop key.
The testing results are indicated in the table, in which the following data is shown for
each echo response:
1) #. Request number;
2) IP address. The node IP address, at which echo requests are sent;
3) Status. Echo request sending results: Ok – proper echo response received within
the specified time, Response timeout – the response is not received within the
specified time (5 sec), No connection – the Analyzer is not connected to the
TCP/IP network;
4) Bytes. The number of data field bytes of the received ICMP echo response;
5) TTL. IP header TTL field value of echo response;
6) Time. The time between echo request sending and echo response receiving in
ms.
Total testing session statistics containing the following data is indicated in the lower
part of the screen:
1) Sent. The number of echo requests sent;
2) Lost. The number of missing responses to echo requests;
3) Time min. Minimum time of response to echo request during all testing time;
4) Time max. Maximum time of response to echo request during all testing time;
5) Time avg. Average time of response to echo request during all testing time;
Press the Shift key, and additional functions will become available for the functional
panel keys: F1 / Network – switching to the Analyzer network settings mode (section
4.10.5), F2 / IPTV – switching to the quality parameters measurement mode for the IPTV
stream reception (section 4.5.2).
4.6. Transport Stream Analysis Procedure
4.6.1. General information
Transport steam analyzer is designed to learn the structure of MPEG transport steam
(TS), and to check TS compliance to the requirements of ETSI TR 101 290 in the real
time. In addition, this mode allows you to measure a number of indicators of TS and its
components: the TS bitrate, the bitrate of elementary streams, the repetition rate of PSI/SI
tables, the repetition rate of PTS timestamps, PCR accuracy (jitter of the PCR timestamps
source), the PCR timestamps frequency offset, the frequency drift rate of PCR
timestamps, etc.
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