GRASS VALLEY Kudos Pro LC4000, Руководство пользователя

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Kudos Pro IP
User Manual
Histogram
The Histogram provides a graphical representation of the distribution of differences between
the card's clock and the PTP grandmaster clock. Every time the clock difference is recalculated,
the relevant bar is incremented. A correctly functioning system will show a distinct peak
around the 0ns level.
Request Interval Return actual minimum interval between delay request
messages. This is as set in the
PTP Delay Request Frequency
control. See Configuration on page 28.
Values are, {256/s, 128/s, 64/s, 32/s, 16/s, 8/s, 4/s, 2/s, 1s, 2s, 4s,
8s, 16s}.
Clock Loaded Increments if the interface was live and the PTP was forced to
update (crash lock).
Synchronizations Increments every time a PTP lock is achieved.
Time Taken to Lock Length of time it has taken to lock the interface.
Message Timeouts Increments if none of the following are received within any 2-
second period:
• follow_up
• delay_resp
• sync
• announce
Clock Steps Back If the IQUCP25/50 receives a time earlier than the last, this
counter is incremented. This could be because of a fault with
the grandmaster, or because there are multiple grandmasters
in the system.
Clock Blips This increments if the local clock offset is >300ns, <-300ns.
Delay Blips This increments if the network delay is >120%, or <80% of the
previous value.
Correction Blips Uses the
correctionField
in the header of
delay_resp
message from the grandmaster.
From IEEE1588 13.3.2.7: "The
correctionField
is the value of
the correction measured in nanoseconds and multiplied by
65536. For example, 2.5 ns is represented as 0x28000.
Increments if the
correctionField
is > 40000 (0.61ns).
FollowUp OoS Errs Increments for every
follow_up
message that is out of
sequence.
FollowUp ID Errs Increments for every
follow_up
message that is not from the
expected clock.
Response OoS Errs Increments for every
delay_response
message that is out of
sequence.
Response ID Errs See Histogram , below.
Item Description