5.3 Time Zone
The parameters in this section allow the equipment to derive local time from
UTC. If a daylight saving time (DST) rule is specified, summertime changes will
be performed automatically.
Time zone parameters are defined in section [TIMEZONE].
[TIMEZONE]
OFFSET is the time value that has to be added to the local time to get UTC
OFFSET
during standard (not daylight saving) time.
OFFSET is positive if the local time zone is west of the Prime Meridian and
negative if it is east.
Time zone abbreviation during standard time. Should not be shorter than 3
STD_NAME
letters. Only the first 4 characters are used, default is “UTC”.
Time zone abbreviation during daylight saving time. Only the first 4 characters
DST_NAME
are used, default is blank.
During daylight saving time, local time is one hour ahead of standard time.
DST_RULE
DST_RULE should be one of NONE, US, EUROPE (or EUROPE_C), EUROPE_W,
EUROPE_E, BRAZIL, or CUSTOM. Default is NONE.
See appendix
on page
for details about each of the daylight saving time
rules above.
Only used if DST_RULE = CUSTOM. See section
on page
for syntax.
DST_BEGIN
Only used if DST_RULE = CUSTOM. See section
on page
for syntax.
DST_END
Configuration for a master clock in Central Europe:
Example:
[TIMEZONE]
OFFSET
= -01:00
; one hour east of Greenwich
STD_NAME = CET
; central european time
DST_NAME = CEST
; central european summer time
DST_RULE = Europe
5.4 Out-of-bounds Limits
The parameters in this section configure the user defined out-of-bounds limits.
All values are in milliseconds. Valid values are from 0.001 (1 microsecond) to
4000 (4 seconds).
See section
on page
for an explanation of how these limits affect equip-
ment operation.
out-of-bounds limits are defined in section [LIMITS].
[LIMITS]
threshold for the LOWQUALITY alarm, default is 0.5 ms (500 µs).
LOWQUALITY
threshold for the BADTIME alarm, default is 1000 ms (1 s).
BADTIME
5.5 NTP Access Restrictions and Strata Specification
Parameters in this section allow fine tuning NTP (the Network Time Protocol).
Section name for NTP fine tunning.
[NTP]
Restricts access to the NTP service to hosts in the specified address range.
RESTRICT
The subnet should be specified using CIDR (classless inter-domanin routing)
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tīma 2P/2R GPS Master Clocks Reference Manual
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