Dry-Contact Relay (Locked); Event Input - GE Reason RT430 Technical Manual

GPS Grandmaster Clock
2.15 Dry-contact relay (L
RT430 has 1 dry-contact used for remotely signaling the synchronism state of the unity, shown in
Length of cables connected to these terminals should not exceed 5m (16ft). See
switching capacity limitations.
As the unit is powered up, the dry-contact L
4 GPS satellites is required for the unit to enter the locked state. In case the unit loses GPS satellite
reference, the dry-contact closes signaling synchronism loss.
2.16

Event input

RT430 has 1 input to signal TTL-Level external events, shown in
This input can be used to verify the PTP signal quality when RT430 is used as slave (PTP signal receiver
from external source via network). To use the event input to verify the signal quality, a synchronism output of
an external source connected to the event input should be used, as shown in
of the synchronism source should be configured to send pulses in a time frequency and an event will be
registered in a log file containing the pulse timestamp for each received pulse. The input accuracy is in the
magnitude of ns.
40
)
OCKED
Figure 20: Dry-contact relay locked
is normally closed. Synchronism information from at least
OCKED
Figure 21: Event input
Chapter 1
.
Figure 21
. The electrical output
Figure 21
Figure 20 .
for information on
RT430-TM-EN-5