VTI Instruments Metek EX1202 - Page 130

VTI Instruments Corp.
130 EX1200 Triggering
FIGURE 7-18: LXI SYNCHRONIZATION WEB PAGE
 IEEE 1588 Parameters
PTP Grandmaster Clock MAC: indicates the MAC address of the device on the network to
which all other IEEE 1588 compliant devices are synchronized.
PTP Parent Clock MAC: indicates the MAC address of the device to which the EX1200 is
synchronized. On a LAN that consists of multiple subnets, this indicates the MAC
address of the parent clock on that particular subnet.
PTP Version: indicates the version of the IEEE 1588. A “1” indicates compliance to Version
1, or IEEE 1588:2002.
PTP State: indicates whether the EX1200 is a master, slave, faulty, disabled, passive, or
unlocked.
Current PTP Time: indicates the number of seconds since midnight January 1, 1970 UTC
(coordinated universal time).
Current Local Time: indicates the date and time (in 24-hour format).
Grandmaster Traceability to UTC: indicates how the grandmaster is synchronized to the
UTC. The values provide an indicator of how closely synchronized the grandmaster is to
UTC time.
Value
Clock Source
UTC Synchronization
ATOM
UTC Atomic Clock
Less than 100 ns
GPS
GPS Receiver
Less than 100 ns
NTP
Network Time Protocol
Less than 50 ms
HAND
Manually/Automatically Set
Less than 10 s
INIT
User Defined
Not specified
DFLT
None
None
TABLE 7-2: UTC GRANDMASTER CLOCK IDENTIFIERS
Current Variance of Parent: this function not currently supported by the EX1200.
IEEE 1588 Domain: indicates the instrument’s PTP subdomain. Typically, this indicator is
_DFLT.