PRISM MPI2-25 and MPX2-25 Media Analysis Platform User Manual
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NOTE.
For 2022-6 signals, the status indicator turns red if the Time Stamp
field does not change at the rate of 27 MHz on every packet. For 2110
signals, the status indicator turns red if the Time Stamp field does not
change at the start of every field or frame at the rate of 90 kHz on every
packet.
•
SSRC
: Identifies the Synchronization Source ID and is set in compliance with
RFC3550. This identifier is chosen randomly and should be unique so no two
SSRC have the same value with an RTP session.
PTP tab display
Select the PTP tab to view the status of the PTP elements in the stream. (See
Figure 143
.) PTP is currently only supported on 10/25 GbE SFP Port 1, for
instructions on locking to PTP
see Configure the reference settings.
Figure 143: IP Session application – PTP tab display
Elements of the PTP tab display.
•
Lock Status
: Indicates whether the instrument PTP slave is locked to the
master PTP signal for the selected domain. These values may appear:
o
No master present
: Indicates that the master PTP clock has not been
detected on the selected domain.
o
Locked
: Indicates that the master PTP clock is detected and there is
less than 1000 ns of phase lag between the master clock and the
instrument.
o
Unlocked
: Indicates that the master PTP clock is detected and
there is greater than 1000 ns of phase lag between the master
clock and the instrument.
•
PTP time
: Shows the time derived from the PTP Master as UTC (Coordinated
Universal Time).
•
Master/Slave Phase Lag
: Shows the detected offset between the master
and slave clocks.
