User manual

TCDS Series User Manual – Rev. 2.0.1 Page 18
Freewheeling Accuracy
The TCDS has built-in provisions to allow the clock to freewheel and maintain accuracy for extended
periods in the absence of time code. These features also allow the unit to be set manually and run
without time code with precision.
TCXO and RTC circuit
The TCDS contains a precision TCXO ( Temperature Compensated Crystal Oscillator) and RTC
(Real Time Clock) circuit allowing the clock to maintain an accuracy of +/- 1 minute per year to
the last known time code input (+/- 165 mS per day) when time code is not present or cannot
be decoded (i.e. freewheeling mode).
Maintenance-free Rechargeable Battery
The RTC and TCXO are maintained continuously from a rechargeable battery circuit during
periods of power outage. Minimum holdover period is two weeks once the battery is
charged.
Default Configuration
The TCDS digital clock maintains its configuration data in non-volatile flash memory allowing the unit
to retain configuration settings even when power is off. The clock may be configured by using the
Windows software application, TCD-Set configuration utility and a USB cable.
The TCDS ships from the factory with the following configuration as defined below.
SETTING CONFIGURATION SELECTION
Disabled
Time Zone Offset
Disabled
Daylight Savings Time
Enabled
Date information in time code
Enabled
24 Hour format
The TCDS ships from the factory with “Time Zone / Time Offset” options set to off in
order to display UTC time.
The TCDS interprets the incoming time code as UTC.