GE D90 Plus Instruction Manual page 136

REAL TIME CLOCK
128
Figure 98: Real time clock configuration settings
The following settings are available to configure the real time clock.
IRIG-B Signal Type
Range: None, DC Shift, Amplitude Modulated
Default: None
This setting selects the type of IRIG-B signal. Select "None" to disable IRIG-B.
Real Time Clock Events
Range: Enabled, Disabled
Default: Disabled
This setting enables and disables the logging of real time clock events in the sequence of
events recorder.
Time Zone Offset
Range: –24.0 to 24.0 hours in steps of 0.5
Default: 0.0 hours
This setting specifies the local time zone offset from Universal Coordinated Time
(Greenwich Mean Time) in hours. This setting has two uses. When the D90
synchronized with IRIG-B, or has no permanent time synchronization, the offset is used
to calculate UTC time for IEC 61850 features. When the D90
SNTP, the offset is used to determine the local time for the D90
provides UTC time.
DST Function
Range: Enabled, Disabled
Default: Disabled
This setting enables and disables the daylight saving time function.
DST Start Month
Range: January through December (all months of the year)
Default: April
This setting specifies the start month for daylight saving time.
DST Start Day
Range: Sunday through Saturday (all days of the week)
Default: Sunday
This setting specifies the day of the week to start daylight saving time.
PLUS
D90 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 6: COMMUNICATIONS
Plus
is time
Plus
is time synchronized with
Plus
clock, since SNTP