Imagine Communications Videotek VSG-4CSD Clock System Driver

Imagine Communications Videotek VSG-4CSD Clock System Driver

Imagine Communications Videotek VSG-4CSD Clock System Driver

B&H # IMHARVSG4CSD MFR # HAR-VSG-4CSD
Imagine Communications Videotek VSG-4CSD Clock System Driver

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  • 1Description

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.

Genlocks to color black (black burst) meeting NTSC SMPTE ST 170M and PAL ITU R BT. 4705 specifications
Genlocks to tri-level sync meeting SMPTE ST 240M/274M/296M standards
Support for various timecode formats and timecode user bit formats, including SMPTE/EBU drop frame or non-drop frame timecode formats
GPS support via 10 MHz, PPS, and RS-232 interfaces
NTP support and IEEE-1588 PTP via a network connection
VITC support from color black input
LTC support
GPI inputs and outputs
Redundant external power supply
Two LTC outputs
Support for DARS or word clock
One color black reference output
Processing Features
  • Configurable DST (daylight savings time) and leap second change
  • Auto-detection for input sources
  • User-defined scheduled call-outs to time reference sources, such as GPS receivers
  • User-programmable delays for input and output, offsets, timecode offsets, output phasing, and input/output jam syncs
  • Display of current local time and date
In the Box
Imagine Communications Videotek VSG-4CSD Clock System Driver
  • AC Adapter
  • Limited 27-Month Warranty
  • Table of Contents
    • 1Description
    System Drive Stability Over Time: 4 PPM (0.34 sec/day); time will vary at about two minutes per year
    Genlock Input Input Type: 1 x BNC input, passive looping
    Input Impedance: Hi-Z

    Blackburst Input Amplitude
    External Reference:
    NTSC: Sync and burst 286 MV, nominal
    PAL: Sync and burst 300 MV, nominal
    Tolerance: @ ± 6 dB
    Subcarrier Jitter: <1 ns (pp) over one horizontal line

    Tri-Level Sync Amplitude: 600 MV pp nominal
    Tri-Level Sync Amplitude Tolerance: @ ± 3 dB
    Return Loss: < -40 dB
    10 MHz Output Input Connector Type: BNC
    Input Impedance: 75 Ohms
    Level: 2 Vpp ±3 dB
    PPS Input Input Connector Type: BNC
    Input Impedance: 75 Ohms
    Level: TTL; Vih = 2 V min. Vil = 0.8 V max
    Edge Transition: 20 ns max
    Return Loss: < 45 dB to 20 MHz
    LTC Input Input Connector Type: 3-pin Weidmuller or BNC (differential balanced or unbalanced)
    Input Amplitude:
    Nominal: 2 Vpp
    Minimum: 0.5 Vpp
    Maximum: 4.5 Vpp
    Differential Balanced:
    Format: SMPTE/EBU LTC 24/25/30 drop/non-drop, auto-sensing
    Impedance: Hi-Z (>30 kOhms) or 600 Ohms, selectable with switches
    Input Sensitivity: 500 MV pp
    Unbalanced Input Format: SMPTE/EBU LTC 24/25/30 drop/non-drop, auto-sensing
    Impedance: Hi-Z (> 30 kOhms)
    Input Sensitivity: 500 MV pp
    Sync Output 5 x BNC
    Blackburst Signal Level:
    NTSC: Sync and burst 286 MV, nominal
    PAL: Sync and burst 300 MV, nominal

    Blackburst Subcarrier Jitter: <1 ns (pp) Over one horizontal line
    SC/H Phase: 0° ±10°
    Tri-Level Signal Level: 600 MV pp
    DC Offset: 0 V ±0.5 V
    Reference to Output Timing: ±100 ns
    Word Clock DAR/Word Clock Output (Shared DARS/Word Clock)
    Audio Formats: AES/EBU
    Output Connector Type: BNC
    Output Impedance: 75 Ohms nominal
    DARS Output Level: 1 Vpp
    Jitter: ≤0.25 UI
    Output Sample Rate: 48 kHz
    Work clock Output Level: 5 V TTL level
    LTC Outputs Electrical: Differential balanced
    Format: SMPTE/EBU LTC 24/25/30 (frames per second) drop/non-drop support
    Impedance: Low-Z (<25 Ohms per side)
    Level: 3.9 Vpp nominal into 1 kOhm (Low-Z output)
    Level: 2.5 Vpp nominal into 1 kOhm (600 Ohms output)
    Transition Time: 40 µs + 4 µs Measured at 10% and 90% amplitude

    Electrical: Unbalanced
    Format: SMPTE/EBU LTC 24/25/30 (frames per second) drop/non-drop support
    Impedance: Low-Z (<25 Ohms per side) or 600 Ohms
    Level: 2 Vpp nominal into 1 kOhm
    Transition Time: 40 µs ±4 µs measured at 10% and 90% amplitude
    Display: 256 x 64 OLED display for device configuration

    Communication Interfaces:
    Ethernet port RJ-45 10/100 Base-T (web browser control, PTP, and NTP interfaces)
    GPIO connector 26-pin Sub-D, female
    Nominal Input Amplitude: 2 Vpp
    Minimum Input Amplitude: 0.5 Vpp
    Maximum Input Amplitude: 4.5 Vpp
    Environmental Operating Temperature: 32 to 122°F (0 to 50°C)
    Storage Temperature: -22 to 149°F (-30 to 65°C)
    Humidity (non-condensing):
    Operating: 20 to 80%
    Non-Operating: 5 to 90%
    Altitude Operating: 6562' (2000 m)
    Power Connector: DC Barrel with screw lock
    Power Input: 12 VDC ±1.2 VDC
    Power Consumption: < 20 W Nominal
    Non-Resetting Fuse: 2.5 A, 16 VDC
    Dimensions 1.7 x 8.5 x 13.2" (4.4 x 21.5 x 33.3 cm)
    Weight 2.7 lb (1.2 kg)
    Packaging Info
    Package Weight 2.65 lb

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