Masterclock CLKTCD12, User Manual

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CLKTCD12 User Manual 5
© Masterclock
®
, Inc 2006-2007.
Rev 1.2.0 May ‘07 http://www.masterclock.com
once the battery is charged. The battery will automatically charge when the unit
is next powered and requires no maintenance.
Non-Volatile Configuration
The user’s configuration settings are maintained in non-volatile memory allowing the
current settings to be retained during power outages and brownouts.
Clock Hand Calibration
The clock hand positions are calibrated at the factory and maintained
continuously in non-volatile memory.
Correction Behavior
Upon a change to either the internal time reference caused by the acquisition time code,
shift of incoming time code, power loss, or from configuration changes to time zone
offset, daylight saving time, or entry into/from daylight savings time will cause the clock
to enter a correction/adjustment cycle.
This correction cycle may take up to 20 minutes to complete, depending upon the
location of the hands and the internal reference time at startup. During this time period
the hands will move rapidly in either a clockwise or counter clockwise motion. This is
normal operation for the clock during the correction/adjustment cycle.
Status LED
The red LED on the CLKTCD12 clock face (located at the 6:00 o’clock position) will
indicate its status:
LED STATE STATUS INDICATION
OFF The clock acquired valid time code and has synchronized its internal
real time clock to the time code reference. The internal clock time
(RTC) is considered accurate. The clock hands may be
adjusting/correcting rapidly either clockwise or counter-clockwise
during a correction.
ON SOLID The clock is not able to decode the time code source or the source is
not present. Time displayed on the face of the clock is based upon
internal time reference [RTC (real time clock) and TCXO
(temperature compensated crystal oscillator), and should not be
considered accurate. Check your time code source.
Operating Environment
The CLKTCD12 is an electronic device designed for indoor use, 0-50°C, and 0-90%
relative humidity. It is not water or moisture proof. Treat it as you would any other
delicate electronic device and do not expose it to water, excessive heat or physical abuse.
The AC version of the CLKTCD12 is designed to operate on 90-240VAC/47-63 Hz.