Masterclock
www.masterclock
.com
21
Operating Environment
The CLDTCD12 contains microprocessor control electronics designed to operate indoors
between 32˚ to 140°F (0˚ to 60˚C) with 0-90% relative humidity, non-condensing.
The
CLDTCD12
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.
Operation
After applying power, the clock will go through an internal check. Time from the RTC backup will
be applied until a Time Code reference is acquired.
Connect a valid time code signal to the unbalanced BNC connector located on the back of the
clock.
The time code input circuit of the
CLDTCD12
can automatically detect and
synchronize to either a single-ended unbalanced or a differential balanced time
code signal.
Once a source of VITC, IRIG-B or SMPTE time code is “Locked”, the time should appear on the
display. If the time code signal is lost or disconnected, the CLDTCD12 will continue to display time
based on its internal reference until the time code signal is returned.
The colons of the clock display will flash when the time displayed is not locked to time code.
When time code is present and decoding properly the colons will remain steady-on.
If the CLDTCD12 is configured for a 12-hour time display mode an AM/PM indicator will appear in
the bottom right corner of the display during the PM hours.
To change the display to/from local time, the user must select the time zone offset for the region
of interest and if desired, the optional DST feature which automatically adjusts according to the
currently entered DST rules.
In the event that a time code source is not present, the unit is designed to operate as a standard
(stand-alone) clock using the built in RTC (Real Time Clock). The RTC is battery backed with a
maintenance free rechargeable battery. When operating in time/date display mode the operator
may program time and date information into the clock.
When time and/or date information is available from the time code source it will
always override any operator-programmed information.
