The Videotek VSG-4CSD Clock System Driver from Imagine Communications is a reference sync and timing platform. It is a 1/2 RU wide, 1 RU tall, and 12" deep clock system driver. The unit features redundant power supply inputs and low power consumption. The VSG-4CSD is designed for broadcast television and post-production environments, as well as other venues in which accurate time and date is required for IP networks and clock displays.
An internal timing engine processes the incoming reference information, makes appropriate conversions to different time bases, and maintains a consistent time base which is used to drive the unit's outputs. Using a combination of parameters such as leap second information, DST (Daylight Savings Time) rules, and offset values, the VSG4-CSD can be configured to convert incoming International Atomic Time (TAI) to other time bases. This time is then distributed to the module's outputs as time and date information, one color black video reference signal, and DARS (Digital Audio Reference Signal), or word clock.
The VSG-4CSD has multiple timing inputs that include GPS (Global Positioning System) sourced time and date with 10 MHz, PPS (Pulse Per Second) and serial data time and date inputs, LTC (Linear Timecode), NTP (Network Time Protocol), VITC (Vertical Interval Timecode), D-VITC (Digital Vertical Interval Timecode), ATC (ancillary timecode) support, and support for IEEE-1588 PTP (Precision Time Protocol). The video reference input supports NTSC, PAL, SD, HD, and 3G formats of video source sync signals including color black (black burst) or tri-level sync.
The VSG-4CSD has one output that can be user-selected for color black or tri-level sync with individual offsets and formats. This provides for multiple format timing from a single reference source. The VSG-4CSD also provides outputs that include NTP master, PTP master, VITC, and LTC outputs with individual offsets on all outputs, as well as DARS (Digital Audio Reference Signal) or word clock output. The easy-to-use front panel and web user interface allow for instantaneous status on any source or output including date, time, and lock information.
The VSG-4CSD provides for daylight savings time and time zone offsets, with an auto changeover function for source failures with primary and secondary source selection, for maintaining the uninterruptable status that is required by the most stringent systems. The unit has dual power supply capabilities and includes two external 110/220 universal AC adapters providing the required DC power input.