TEK-NTS03-G+-Manual-v3.-012022
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information in this document is provided for informational use only and is subject to change. For further information or support,
synchronization is achieved. The contact then closes, deactivating the alarm. If a loss of
synchronization later occurs, then the NTS 03-G+ will operate in “Sync Hold” mode for a period
defined by the “Sync Hold time”.
At the expiry of the “Sync Hold time”, the alarm condition is again activated (contact open).
Note that the “Sync Hold Time” is configurable up to a maximum of 970 days. The default
setting is 2 minutes. A configurable option is also provided to disable the “Sync Hold Time”,
allowing the unit to remain in “Sync Hold” mode indefinitely.
P5: Power Alarm Relays (4-pin 3.81 mm Connector)
The pluggable connector provides two alarm output channels. Wiring size is up
to 1.00 mm². The alarm outputs are type A (normally open) dry contact types.
Note:
The “Normally-Open” (NO) descriptor refers to the de-energized state of
the solid-state relay. The convention used in the NTS 03-G+ is to have the alarm
relays energized during normal operation, and de-energized in the alarm state.
In the case that all power to the time server is lost, all the alarm relays then default to the
“alarm” state (open contact). The “+” and “-” symbols are included for reference purposes only,
as the alarm contacts are not polarized.
P5 A
is a Power A fail alarm and
P5 B
is a Power B fail alarm. The power alarms will only be
triggered if it is enabled in the Tekron configuration Tool. Alarm signaling is delayed by 10
seconds. That is, if power supply A fails, the Power A alarm contact will open 10 seconds
later.
ADMIN/ETH 1: Ethernet Administration Port (RJ-45)
The Ethernet administration port (ETH1) features an RJ-45 connector and
supports 10/100 Mbps, Auto MDI-X and Auto Negotiate. The port indicator
LEDs conveys the Link (LNK) and Activity (ACT) status for the port. This port is
used to configure clock settings and all network ports via the Tekron
Configuration Tool, which is available for download from the Tekron website at
