6 Functional description of receiver
UTC offset of the incoming time code. The derived local time can be transmitted via the outgoing time code, the
serial time strings, or can be read via the PCI interface.
The time zone is entered as offset of seconds from UTC, e.g. for Germany:
MEZ = UTC + 3600 sec, MESZ = UTC + 7200 sec
The specific date of beginning and end of daylight saving can be generated automatically for several years.
The receiver calculates the switching times using a simple scheme, e.g. for Germany:
Beginning of daylight saving is the first sunday after March, 25th at two o’clock => MESZ
End of daylight saving is the first sunday after October, 25th at three o’clock => MEZ
The parameters for time zone and switching to/from daylight saving can be set by using the included mon-
itor program. If the same values for beginning and end of daylight saving are entered then no switching to DST
is made.
The associated settings can be changed using the configuration software shipped with the driver packages.
Most IRIG codes don’t include an announcement flag
for the DST change, or for the of a leap second, so the
TCR180PEX-EL will switch into free running mode on
such event, and resynchronize a few seconds later.
TCR180PEX-EL
Date: 6th May 2021
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