Latency / JitterLatency / Jitter
timestamptimestamp
When Disruption Type is set to PacketPacket and the received signal includes a link alarm, etc.,
the Service disruption may not be accurately measured.
This screen allows you to configure the timestamp of JitterJitter, LatencyLatency and
Service disruptionService disruption.
Version 9.05 or olderVersion 9.05 or older
When selecting the check box, the measurement is performed with a resolution
of 0.1 μs which is same as the software version of Version 9.05 or older.
It is not available to perform measurement by using Network Masters which
have different resolution setup. If the software version of the Network Master
on the opposite side at the facing test is 9.05 or older, select this.
At Ethernet + OTN or WAN measurement, this is automatically selected.
When not selecting the check box, the measurement can be performed with a
resolution of 0.005 μs depending on "Timestamp source" selection and using
a GPS. When QSFP-DD and OSFP are used for the interface, this resolution is
automatically performed.
SourceSource
Select a timestamp source for measurement. The indicator on the right notifies you
whether latency and/or jitter can be measured.
Green: Latency and/or jitter can be measured.
Red: There is a possibility that the timestamp source signal could not be
detected. For the detection status of the timestamp source signal, refer to
Timestamp source availabilities.
Only when Version 9.05 or olderVersion 9.05 or older is NOT selected, GPS (Ext ref. 10MHz)GPS (Ext ref. 10MHz), and
1PPS(Ext ref. 10MHz)1PPS(Ext ref. 10MHz) can be selected.
When GPSGPS, 1PPS(Ext ref. 10MHz)1PPS(Ext ref. 10MHz), or GPS(Ext ref. 10MHz)GPS(Ext ref. 10MHz) is set, the
measurement can be performed by using two Network Masters which have
made synchronized.
In this case, set the same option to Source(Ext ref. 10MHz)Source(Ext ref. 10MHz) of both Network
Master.
Round Trip time and One Way Latency can be measured by setting Source in
combination show in the table below.
Module ModelModule Model
Round Trip timeRound Trip time One Way LatencyOne Way Latency
SourceSource SourceSource GPS receiver to be usedGPS receiver to be used
MU100010A Internal GPS
G0325A or
MU100090A
MU100011A,
MU104011A,
MU104014A,
MU104015A
Internal
GPS G0325A
1PPS(Ext ref. 10MHz)
GPS receiver provided
by other than Anritsu
MU100090A
*1
GPS(Ext ref. 10MHz)
MU100090A
*2
*1: When the MU100090A is feeding 1PPS and 10 MHz clock to two Network
Masters.
*2: When the MU100090A is feeding 1PPS and 10 MHz clock to one Network
Master.
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