CLKTCD Series User Manual
– Rev. 2.0.1
Page 15
Hand Position
The hands will set adjust to the time code reference, plus any time zone and/or DST offsets.
If for any reason the clock hands become slightly out of alignment, a calibration setting function has
been provided in CLKTCD‐Set configuration utility or using the buttons located on the back.
The hands of the CLKTCD cannot be set manually. Do not attempt to open the clock to access
the hands. This action will void your warranty. This device has no user serviceable parts
inside.
The CLKTCD series can be configured using one of the following methods:
•
DIP Switches and buttons.
•
CLKTCD‐Set, USB Configuration Utility via the USB port.
Please refer to the “Configuration” section of this document for additional details on
how to adjust the settings.
If the configuration software is used to configure the clock, the DIP switch settings will
be ignored or over‐ridden. In order to restore the configuration mode to the use of the
DIP switches, the unit must be Reset to the factory default mode.
Time Zone Offsets
All time code analog clocks maintain time as UTC.
A time zone offset or bias can be used 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 behind UTC time. An offset with a resolution of one half hour (via DIP switches) or 1 second
(via CLKTCD‐Set configuration utility) can be achieved.
If the time code input to the ADC‐A12C31 is not UTC, do not adjust the time zone and/or
DST offset.
Daylight Saving Time
An automatic DST setting can be configured separately and in addition to a time zone offset.
For SMPTE time codes, date must be encoded to the Leitch specification. IRIG‐B date decoding is
supported for the IEEE 1344 standard.
The incoming time code must have the date encoded in a format recognized by the CLKTCD
for DST adjustments to be performed. For best reliability Masterclock recommends a time
code reference that encodes full date information, such as the Masterclock GPS200A time
code generator.