Hirschmann RS20 Reference Manual page 92

Time
Parameters Meaning
Parent Port Port UUID of the direct master
identity
Grandmaster Device UUID of the reference clock
identity
Table 47: PTP Clock Identities
Note: PTPv2 uses as the device UUID 64 bits, consisting of the device's
MAC address, between whose No. 3 and No. 4 bytes the values ff and fe
are added.
A port UUID consists of the device UUID followed by a 16-bit port ID.
The device displays UUIDs as a byte sequence in hexadecimal notation.
Parameters Meaning
Priority 1 Display priority 1 of the current
reference clock.
Priority 2 Display priority 2 of the current
reference clock.
Class Class of the reference clock
Precision Estimated accuracy with regard to
the UTC, indicated by the reference
clock (the Grandmaster).
Variance Variance as described in the IEEE
1588-2008 standard
Table 48: Grandmaster (reference clock)
Parameters Meaning
Time source Source selected for own clock.
UTC Offset [s] Current difference between the PTP
time scale (see below) and the UTC.
UTC Offset valid Specifies whether value of UTC
offset is valid or not.
Time Traceable The device gets the time from a
primary UTC reference, e.g. from an
NTP server.
Table 49: Properties of the local time
92
3.3 PTP (IEEE 1588)
Possible values
Possible values
Possible values
atomicClock
gps
terrestrialRadio
ptp
ntp
handset
other
internalOscillat
or
-2147483648 to
2147483647
Yes
No
Yes
No
Default setting
Default setting
Default setting
internalOsci
llator
35
No
RM GUI L2E
Release 8.0 05/2013