OID Name Value Type Description
3.7110.1 GM Offset <Integer>
Default: 0
Offset to compensate user cable delay for PPS input (in
picoseconds). When Align PPS is enabled the PPS out-
put should be aligned to the PPS input but the user
might want to compensate this delay.
3.7110.2 Priority1 <Integer>
Default: 128
PTP Priority1 announced when the GM is active. It is
mainly used by BMCA to force the best-clock selection
using 1st priority (Lower values take precedence).
3.7110.3 Priority2 <Integer>
Default: 128
PTP Priority2 announced when the GM is active. It is
mainly used by BMCA to force the choice between two
references when their clock qualities are the same
(Lower values take precedence).
3.7110.11 Clock
Accuracy
<Enum> Default:
Unknown
It announces the expected accuracy provided by the
external reference. It shall be conservatively estimated
based on the type of time source (e.g., Atomic Clock <=
1ns, GNSS receiver <= 50ns).
Caution: If GM is used as a timing source, it should always be associated to
the configuration of at least one NTP server to properly recover the time of
day (ToD).
5.5.2 Info/Overview
The GM timing source provides its own overview panel where the user can easily audit the
condition of its external reference (see figure below).
Figure 5-19: Overview tab for GM timing source.
It basically offers a readback of the configuration value (Source Type, Source Rank, Align
PPS and PPS Mandatory) as detailed "Configuration" on the previous page, along with an
user friendly Message that summarize the state of the GM internal state machine and a
Detected value that reports the situation with the external reference inputs signals. Finally,
74
CHAPTER 5 • WR-Z16 User Manual Rev. v3.4
5.5 External Reference (GM)
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