Product ManualManual

The 1200DD & 1201DD are LED digital clocks with 7-segment-digits display. They may operate as a timecode-reading clock or as a SMPTE ST 12-1 linear timecode reader, simply displaying the input timecode. In addition to SMPTE ST 12-1 timecode, the clocks can operate on the internal quartz time base from IRIG-B, a GPS antenna or NTP. This multi-way reference capability allows easy integration into new or existing clock systems.

The model 1200DD clock face has 2.25" tall digits that may display HH:MM:SS AM/PM or HH:MM:SS FF, depending on the control settings. The model 1201DD clock face has 1.00" tall digits that may display HH:MM:SS AM/PM or HH:MM:SS FF depending on the control settings. The brightness of the digital LEDs is adjustable.

Clock installation is simple when one of the time sources is available. Apply power, connect time, select the input source and the clock takes care of the rest, instantly setting to the correct time. If time source fails, the colons flash twice per second to signal it's absence. Any time discrepancy on return of timecode is instantly corrected. This also applies to timecode changes such as Standard Time to Daylight Savings Time.

The 1200DD series displays may be preset to display an offset from local time. This local offset allows the display of any or all time zones at one location. This offset is user-programmable from -12 hours to +12 hours. When no source of timecode is available, the 1200DD & 1201DD may be configured as timecode generators, using their internal quartz crystal. When used as a generator, the 1200DD series displays can drive multiple high impedance, timecode-reading devices.

If AC power is lost, the 1200DD series displays maintain time internally via a crystal oscillator powered by a lithium battery. The display will show this time if no input time source is available on power up.

The rear panel input and output connections for timecode are XLR connectors. The IRIG-B input is a BNC and the NTP is a RJ-45 Ethernet connector. The GPS input is a DB9 connector. The GPS feature requires the +GP option to be purchased. When operating with no time source, the clock time can be easily set by means of three miniature pushbuttons on the front panel, which are also used to control the setup menu.

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  • Competely self-setting with SMPTE ST 12-1 LTC timecode input or battery back-up
  • Built-in quartz time base oscillator with battery back-up
  • May be operated as a timecode reader for use with countdowns
  • Digital display is user-selectable between HH:MM:SS, 12/24 hour, HH:MM:SS FF and date
  • IRIG reader reads 1kHz IRIG-B format sine wave amplitude modulated code (format B122)
  • Optional GPS receiver
  • May be configured as a timecode generator to drive other clocks
  • LED brightness is adjustable
  • Runs on 50/60Hz, 115/230V AC power line
  • User-programmable time offsets
  • Rack mountable
  • VistaLINK® control for device configuration and status monitoring
  • Programmable daylight savings time start & end times
  • NTP client
  • Standard red LEDs (Green Optional -G)
  • Compatible with Evertz UDT protocol


Linear Time Code Input
StandardSMPTE ST 12-1 linear time code - 24, 25 or 30 Fps
Impedance> 30Ω, balanced
Connector3 pin female XLR
Level1V to 4.5V p-p
IRIG Reader Input
StandardIRIG 200-95 FORMAT B122
ConnectorBNC per IEC 61169-8 Annex A
Level0.2V to 4V p-p
Linear Time Code Output
StandardSMPTE ST 12-1
ImpedanceLo-Z, balanced
Connector3 pin male XLR
Level2V p-p nominal unloaded
Serial Port
Baud Rate57.6kbaud
ConnectorFemale DB-9
Format8 data bits, no parity, 2 stop bits
Time Keeping
Accuracy< 2 seconds per day with power on, no timecode preset
< 10 seconds / day with power removed
Time Zone Offset0 to 23.5 hours in 0.5 hour increments
Set with menu
GPS Receiver+GP option only
Temperature-30°C to +70°C
Humidity95%R.H. Condensing at 60°C
Dimensions5.8" D x 3.9" H (147mm x 100mm)
Max. Cable length400 feet
Network TypeEthernet 100 Base-TX IEEE 802.3u standard for 100Mb/s baseband,
CSMA/CD local area network
Ethernet 10 Base-T IEEE 802.3 standard for 10Mb/s baseband,
CSMA/CD local area network
NTP StandardFRC-1305 compliant, client mode support
Backup Battery
TypeCR-2032 3 volt lithium cell
Life expectancy> 5 years
Power12V DC, 15 Watts auto ranging 100/240V AC, 50/60Hz adapter included
Power SupplyUL listed
SafetyETL listed, Complies with EU Low Voltage Directive
EMI/RFIComplies with FCC Part 15 Class A EU EMC Directive
1200DD17.25"W x 3.5"H x 2.75"D
(438mm W x 89mm H x 70mm D)
1201DD17.25"W x 1.75"H x 2.70"D
(438mm W x 45mm H x 69mm D)
1200DD3lbs (1.5kg)
1201DD2lbs (1kg)
Front3 pushbuttons
RearSerial port com.
Local OffsetAny amount, user selectable

Ordering Information

1200DD2RU Rack-mount Digital Display
1201DD1RU Rack-mount Digital Display
1200DD-G2RU Rack-mount Digital Display - Green LEDs
1201DD-G1RU Rack-mount Digital Display - Green LEDs
Ordering Options
+GPGPS option (includes GPS receiver and 50' weatherproof cable)
WA-T76100' weatherproof cable for GPS receiver
WA-T10200' weatherproof cable for GPS receiver
WA-T11400' weatherproof cable for GPS receiver