Siemens SWT 3000 Equipment Manual page 155

[scclocsy-111011-01.tif, 1, en_US]
Figure 3-47
Table 3-52
Adjustment Local sync.
off
USYNC signal (minute or hour)
IRIG-B00x (sync. only)
IRIG-B000 (RTC time adj.)
IRIG-B004 (RTC time&date adj.)
NTP-Sync
If there is a USYNC failure, you can activate an additional Non-Urgent alarm (NUALR or NU-alarm) in the
configuration dialog for the clock synchronization.
Smart Communication, SWT 3000 Teleprotection, Equipment Manual
C53000-G6040-C605-1, Edition 03.2020
Options for the SWT 3000 Clock Synchronization
Setting Options for the Local Clock Synchronization of the iSWT
Comment
No local clock synchronization
An external impulse is received via the USYNC input every
minute or hour. The active signal slope rising or falling is
synchronizing the Real-Time Clock (RTC) seconds.
The IRIG-B message is received via the USYNC input and is
decoded. With each change of the IRIG-B minutes, the RTC
seconds are synchronized.
The IRIG-B message is received via the USYNC input and is
decoded. With each change of the IRIG-B minutes, the RTC
seconds are synchronized. Additionally, the IRIG-B time (hour,
minutes, and seconds) is compared with the RTC time of the
iSWT. If there is a difference, the IRIG-B values are taken over
into the RTC.
The IRIG-B message is received via the USYNC input and is
decoded. With each change of the IRIG-B minutes, the RTC
seconds are synchronized. Additionally, the IRIG-B-time and date
are compared with the RTC time and date of the iSWT. If there is
a difference, the IRIG-B values are taken over into the RTC.
Synchronization of the RTC with the network time protocol. For
the NTP settings.
Refer to chapter SNMP and Remote
section Web Login 6.4.3 NTP
Installation and Commissioning
3.5 Device Configuration
Access6.1.1 Overview
Settings.
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