Videotek ADC-A12C31

Model Details

The Videotek® ADC-A12C31 is a precision analog clock containing a stepper motor drive and advanced, microprocessor-controlled electronics to provide an accurate delivery of time. The clock is designed with a powder-coated steel case for wall mount applications (mounting bracket supplied). The ADC-A12C31 supports LTC using SMPTE timecode. Clear labeling and an internal, LED-lit face make this clock readable from long distances. Standard power connection and BNC connection for the LTC are provided.

Features:

Battery backup retains time during loss of power or reference

Self-correcting hands once power and/or timecode reference is established and after loss of power and/or timecode reference and DST changes

Time zone offsets (to one second resolution)

DST (Daylight Savings Time) configuration

TCXO (Temperature Compensated Crystal Oscillator) for ± 1 minute per year accuracy when no reference available (free running)

All configuration settings retained in non-volatile flash memory

Second hand with sweep or step option

Status LED on clock face, located at the 6 o’clock position

Microprocessor-controlled stepper motor for reliable, accurate and quiet operation

Universal AC input voltage and frequency

Fully configurable via USB interface with supplied ADC-SET software

-11.5 to 12 hour time zone offsets in 30-minute increments

Self-correcting to non-drop frame timecode

SMPTE, EBU and IRIG?B (modulated and unmodulated) timecode support

Specifications:

Input (timecode)
Type	Longitudinal/Linear, forward running
Formats	SMPTE 24 (Film), 25 (EBU) or 30 f/s non-drop frame IRIG-B (1) 1 kHz amplitude modulated, 3:1 modulation ratio IRIG-B (0) dc offset/level shifted/unmodulated/pulse width modulated/TTL level
Nominal Level	1.5 V pk-pk (0 dB/600)
Level Range	0.175 to 12 V pk-pk (-15 to 20 dBV)
Impedance	>100 k ohms
Connector	BNC female, single-ended, unbalanced
Center Pin	Timecode In
Outer Conductor	Timecode Return

Communications – I/O
USB	B type connect
Format	v1.1

Power Requirements
AC Input Voltage	90 to 265 VAC
AC Input Frequency	47 to 63 Hz
Power Consumption	<7.5 W
Input Connector	IEC
Power cord	North American Power cord options available for UK, Europe, and Australia

Internal Battery Circuit
Rechargeable 17 mAh Manganese Lithium coin cell (Panasonic ML1220) and recharging circuit require no maintenance and retain TCXO and RTC (real-time clock) for two weeks (minimum holdover) without applied external power. Note: Clock hand alignment/calibration settings and configuration settings are maintained in non-volatile flash and are not affected by either loss of power or internal battery voltage.
Physical	12.5 in. (31.8 cm) round, black metal case with 12 in. face, 4.25 in. (10.8 cm) depth, polycarbonate lens
Weight	7.6 lbs (3.45 kg)

Operating/Storage Temperature and Humidity
Operating Temperature	0 to 60° C
Relative Humidity	Up to 90% (non-condensing @ 25° C)
Storage Temperature	-40 to 85° C
Relative Humidity	Up to 90% (non-condensing @ 25° C)