Product ManualManual

The 1200T series Analog Clock Displays take master and slave clock technology to new levels of convenience and excellence. The clocks are microprocessor controlled and employ separate direct drive motors for each hand. This means that, as well as being able to set the time almost instantaneously, the new displays are also silent in operation. The hands of the clocks can be programmed to move in sweep mode or in steps.

Each clock can be programmed for automatic Daylight Saving Time adjustment, as well as for any time zone offset using a laptop computer. It is then only necessary to supply the clock system with Universal Coordinated Time (UTC) from the master clock. Daylight Saving Time changes will be automatic, as will adjustments for different time zones.

Each clock can be used as a master or slave clock. When used as a slave clock, it reads SMPTE linear timecode (LTC) from a master clock. When used as a master, it generates LTC for distribution to other slave clocks. In fact, any clock in the chain can generate timecode as soon as it loses timecode input from the master. The system is therefore extremely robust and reliable.

When the +T option is added, the 1200T series clocks can lock to time distributed as Network Time Prototcol (NTP) over Ethernet.

The problems of power distribution have also been considerably simplified. With other clock products, it is necessary to install power outlets wherever clocks are to be located. The 1200T series system slave clocks are powered from the Ethernet cable that distributes both power and NTP time. The clocks may also be powered locally using the AC to 12V DC adapter provided.

Internal crystal oscillators ensure that the clocks will continue to operate in the absence of input timecode. Internal battery backup ensures that each clock will continue to keep time in the absence of timecode and power. When power resumes, the hands will immediately reset to the correct time.

The 1200T series clock displays are offered in two sizes. Backlighting is available for all models.

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  • Automatic detection of 30 Fps or 25 Fps SMPTE LTC timecode input
  • May act as an NTP client when +T option is ordered
  • Three motors for quiet operation and rapid hand setting - sets to time in 10s
  • Automatic Daylight Saving Time adjustment
  • Addressable slave clocks with programmable time offsets of 0 to 23.5 hours in 0.5 hour increments - set via DIP switches, RS-232 control or VistaLINK®
  • Accepts date information from LTC User Bits using SMPTE ST 309 or Leitch™ protocol
  • Master or Slave operation with battery backed up clock
  • Single cable distribution for both power and NTP using IEEE 802.3at Power over Ethernet
  • Optional back lighting of clock face
  • Two sizes 12" or 16"
  • Time may be set manually via pushbutton switches, or through the RS-232 serial port, or via VistaLINK®
  • Completely self-setting with NTP, (optioal) SMPTE timecode input or battery back-up
  • Built-in quartz time base oscillator with battery back-up
  • May be configured as a timecode generator to drive other clocks
  • Lighting brightness is adjustable
  • Powered by 12V DC (with 50/60Hz, 100↔240V AC adapter), or IEEE 802.3at Power over Ethernet
  • 10/100Mbit Ethernet port for NTP and SNMP control/monitoring with VistaLINK® Pro


LTC Input
StandardSMPTE ST 12-1 linear time code - 25 or 29.97 drop-frame Fps nominal
ConnectorPhoenix 4 pin terminal connector
Signal Level1V p-p nominal
Input impedance> 30KΩ
LTC Output
StandardSMPTE ST 12-1 linear time code - 25 or 29.97 drop-frame Fps nominal
ConnectorPhoenix 4 pin terminal connector
Signal Level2V p-p nominaL
Modeconfigurable as loop thru from input or output of local clock time
Time Keeping
Accuracy< 2s per day with power on, no timecode present
< 10s / day with power removed
Time Zone Offset0 to 23½ hours in ½ hour increments
Set with DIP switches or serial port command or VistaLINK®
Automatic daylight saving time can be enabled.
Serial Port
ConnectorFemale DB-9
Baud Rate57.6 Kbaud
Format8 data bits, no parity, 2 stop bits
Network TypeFast Ethernet 100 Base-TX IEEE 802.3u standard for 100 Mbps baseband CSMA/CD local area network
Ethernet 10 Base-T IEEE 802.3 standard for 10 Mbps baseband CSMA/CD local area network
Supports Type 1 Power over Ethernet
NTP StandardNTP v4 compliant, client mode support when +T option installed
Backup Battery
TypeCR-2032 3 volt lithium cell
Life expectancy> 5 years
AC/DC12V DC nominal
Auto ranging 100↔240V AC 50/60Hz to 12V DC adapter provided.
Power Over EthernetIEEE 802.3at Type 1
Power consumption12 watts
Outside Dimensions
1212T, 1212TL13" W x 13" H x 2.5" D
(330 mm W x 330 mm H x 64 mm D)
1216T, 1216TL17" W x 17" H x 2.5" D
(432 mm W x 432 mm H x 64 mm D)
Clock Face
1212T, 1212TL12" diameter
1216T, 1216TL16" diameter
1212T, 1212TL6.5 lb (2.9 kg)
1216T, 1216TL10.5 lb (4.75 kg)

Ordering Information

1212T12 inch Analog clock
1212TL12 inch Analog clock and back lighting
1216T16 inch Analog clock
1216TL16 inch Analog clock and back lighting
Ordering Options
+TNetwork Time Protocol