Remote Monitoring (Web Interface); Dry-Contact Relay (Locked); Irig-B Signal; Ptp Protocol - GE Reason RT430 Technical Manual

RT430/434

Remote monitoring (Web Interface)

Dry-contact relay (Locked)

IRIG-B Signal

PTP Protocol

NTP Protocol

SNTP Protocol

2

Firmware Update

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In the monitoring area of the Web Interface it is shown the information Locked and
the number of satellites when there is time reference in the GNSS antenna input, and
Unlocked when reference is disconnected.
The RT430/434 has a dry-contact normally closed for remotely signaling the locked
state of the unit. As the unit is powered up, the dry-contact Locked is normally closed.
The dry-contact relay operates along with the Locked indicator, and while RT430/434
is locked, the dry-contact relay is open. Thus, in case the unit loses satellite reference,
the dry-contact closes signaling the problem.
When the Time Quality bits from IRIG-B signal are all in 0, the unit is in Locked state,
i.e., there is time reference in the GNSS antenna input. In case the reference is
disconnected or the signal is weak, the bits combination will differ from zero.
In PTP protocol, there is a bit called time traceable that, when set, informs the
existence of time reference in the GNSS antenna input. Besides the existence of a
reference signal, it is possible to qualify the signal, according to the bits clock class
and clock accuracy, in which the criterion for assessing the quality of the signal is
configured in the device that receives the PTP messages.
In NTP protocol, information is given in layers, known as Stratum, numbered from 0
to 16. Layer 1 indicates the unit is operating with time reference from the GNSS
antenna input, and it is in L
interrupted, i.e., the unit is not on L
protocol is updated every-2-minutes after the reference is interrupted.
In SNTP protocol, a data set is sent containing time synchronization and the status of
the external time reference.
When the status data is zero, it represents the lack of time reference in the GNSS
antenna input. When it is 1, it represents the existence of reference in the GNSS
antenna input, i.e., it is in L
Eventually, new firmware versions will be released with updates and improvements
to the unit.
The Setup section of the Web Interface allows updating the firmware, manipulating
configurations, changing key, and changing configuration username and password.
state. Layer 16 indicates the reference was
OCKED
state. Also, the synchronization in this
OCKED
state.
OCKED
Chapter 7 – Maintenance
RT430/434