CLKTCD Series User Manual
– Rev. 2.0.1
Page 8
Introduction
The CLKTCD is a precision analog clock containing a stepper motor drive and advanced
microprocessor controlled electronics.
IRIG‐B
Defined by the Range Commanders Council, U.S. Army White Sands Missile Range. IRIG (Inter‐
range Instrumentation Group) is used by military, government, power industry and many other
commercial and industrial applications. The CLKTCD decodes IRIG‐B in both a 1 kHz modulated
(IRIG‐B1) and un‐modulated/pulse width coded/DC level shifted (IRIG‐B0) format. All formats of
IRIG‐B time code decoded by the CLKTCD use the time of year information BCD (Binary Coded
Decimal). All formats of IRIG‐B time code decoded by the CLKTCD also use the extended
year/date and time zone information in the control functions as defined by the IEEE 1344
specification. SBS (Straight Binary Seconds) information is not decoded. Manchester
format/encoding is not supported.
The CLKTCD can be configured for world‐wide time zone offset and automatic DST (Daylight Saving
Time) adjustment and allows for reliable, accurate and maintenance free operation. Use of the
automatic DST feature requires that the clock be enabled to accept the time code date encoding,
using the USB port and CLKTCD‐Set (Clock Time Code Display) USB Configuration Utility (i.e. Windows
software application). The time code reference must provide date encoding in the control bits/fields
to the Masterclock/Leitch date encoding standard for SMPTE or the IEEE‐1344 year encoding for
IRIG‐B.
SMPTE
Society of Motion Picture and Television Engineers format is available in frame rates of 24, 25, and 30
frames second. The CLKTCD time code clock supports all three formats.
All formats of SMPTE time
code decoded by the CLKTCD use the full date information in the user bits as defined by Leitch, Inc.
The CLKTCD does not support decoding of SMPTE drop‐frame, reverse running, VITC, NTSC,
color frame, blackburst or other video time code formats and synchronization options.
Please refer to the “Specifications” section of this document for additional details on
each model. For available options, visit Masterclock’s website:
www.masterclock.com
Features
•
RTC (Real Time Clock) backup retains time during loss of power or reference.
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Self‐correcting hands once power and/or Time Code reference is established.
•
Time zone offsets (to one second resolution) supports any biasing requirements.
•
DST configuration.
•
TCXO (Temperature Compensated Crystal Oscillator) for +/‐ 1 min year accuracy with no
reference in (freewheeling).
•
All configuration settings retained in non‐volatile flash memory.
•
Second Hand with sweep or step option.
•
Self‐correcting hands after loss of power and/or time code reference and DST changes.
•
Status LED (Light Emitting Diode) on clock face, located at the 6 o’clock position.