CLKTCD12 User Manual
3
© Masterclock
®
, Inc 2006-2007.
Rev 1.2.0 May ‘07
http://www.masterclock.com
previous software configuration settings will be need to be reconfigured. Only one
configuration method should be used at a time.
Time Zone Offsets
All time code analog clocks maintain time as UTC (sometimes equated with GMT)
internally.
[Note: If the time code being input into the CLKTCD is not UTC/GMT, i.e. it is already
offset for local time zone and/or DST, then do not adjust the time zone and/or DST
offset]
.
A time zone offset (or bias) can be provided to adjust the time for display purposes. A
bias can be set as a positive (+) offset indicating that the unit leads the UTC time, or
negative (-) offset value indicating the unit lags UTC time. An offset with a resolution of
one half hour (via Switches) or 1 second (via software configuration) can be achieved.
Factory default: no offset.
It is highly suggested to utilize a time code source with UTC reference and configuring
the offsetting for your time zone and DST in your local time display clock.
Daylight Saving Time
An automatic daylight saving time (summer time for European Union) adjustment can be
configured separately and in addition to a time zone offset.
[IMPORTANT NOTE: The incoming time code must have a date encoded in a format
recognized by the CLKTCD12 for daylight savings time adjustments to be performed.
For best reliability Masterclock recommends a time code source that encodes full date
information, such as the Masterclock GPS200A time code generator.]
For SMPTE time codes, date must be encoded to the Leitch specification. IRIG-B date
decoding is supported for the IEEE 1344 standard. Masterclock, Inc. master clock
systems also supports these specifications.
[Note: If your time code source is already making adjustments for Daylight Savings
Time, do not enable this feature.]
[Note: to utilize the automatic DST feature, the time code date encoding must be
enabled either by switches (TC control) or via the software configuration utility.]
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