THOMSON Amethyst III User Manual

Chapter 3 ’Web Browser Interface’ — Interface Description
154 Amethyst III DTV Smart Switch
User Manual
T2-MI Tests
T2-MI is a basic set of parameters that are considered necessary to
ensure that the T2-MI switches are seamless and does not cause
modulator reset.
Available in AMETH3-LIC-SWITCH-STD.
Table 3-15. T2-MI tests
Format Persistence
Test Description
ASI 310M GigE Optional/Mandatory Duration Upper threshold Lower threshold
Presence This test checks that the T2-MI PID is present in the input
transport stream.
A T2-MI stream is considered not present if:
- No T2-MI PID is detected.
- No payload is detected on the T2-MI PID.
- Bad T2-MI structure detected (invalid packet type or
superframe id).
- No new T2-MI packet detected (data but not a new
pac
ket).
This test is mandatory for T2-MI inputs. The
error level
is fixed to “critic”.
Note: a PID is not considered a T2-MI PID if no data (or
no
T2-MI data) is received during a period equal to the
maximum time possible before the switch to the second
stream.
 — — M  — —
Packet count This test checks if there is no discontinuity of T2-MI
packets (based on the packet_count field in the T2-MI
pac
kets header).
 — — M  — —
PID continuity counter This test checks if there is no discontinuity of the
Continuity counter on the T2-MI PID.
 — — M  — —

THOMSON Amethyst III Specifications

General

Brand	THOMSON
Model	Amethyst III
Category	Switch
Language	English