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Tascam CG-1800 Video Sync/Master Clock Generator for Post-Production
Part # CG-1800
Model # CG-1800

The Tascam CG-1800 master clock generator generates NTSC, PAL and HD Tri-level video clock – as well as word clock through BNC, AES/EBU and S/PDIF outputs – ensuring compatibility with any synchronization system.

Availability: Usually arrives in 5-9 business days.

Please be aware that global supply shortages outside our control may interfere with our normal delivery times and product availability. For more information, email [email protected] or call us at 888-256-4112.

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Description

Details

The CG Series includes three distinct models tailored to different types of studios. The CG-2000 is designed for the needs of broadcasting and post production, the CG-1800 for small to large-scale video/audio synchronization systems, and the CG-1000 for recording studios, live sound applications and professional musicians.

The crystal oscillator is the heart of the clock generator. In each model of the CG Series, an OCXO (oven-controlled crystal oscillator) is used for its high precision, and the fact it is not influenced by the temperature of the environment. Boasting a clock frequency precision of 0.01 ppm, which exceeds that of a TCXO (temperature-compensated crystal oscillator), this unit is key in the creation of high-precision synchronization systems - with word output frequency stability of ±0.005ppm or less per day.

The CG-2000 is equipped with an external input connector that supports a 10MHz signal. This allows it to be connected to a rubidium clock or GPS clock for even higher precision.

External clock jitter is reduced using an original TASCAM circuit design that incorporates a high-performance video clock generator engineered with an FPGA and a PLL (phase-locked loop) circuit with a discrete filter. This enables a stable clock signal to be provided to the video/word outputs - improving system stability. The glitch-free relock circuit prevents noise and skipping sounds caused by master clock dropouts.

In addition to (12) word clock outputs and (4) video outputs, the digital outputs include (2) AES3/AES11 and (2) S/PDIF outputs, making this unit useful for large-scale audio/video synchronization systems, and a wide variety of other applications. Of the (12) word outputs, two also support x2Fs, x4Fs and 256Fs output - enabling them to be used in systems with ProTools and other DAW software.

The CG Series has multiple functions to support maintenance, and the identification of issues if problems occur. The analyzer function measures output device termination, input level measurement (for CG-2000 and CG-1800), and the measurement of input frequencies. These built-in features enable the devices to provide troubleshooting support. Additionally, a logging function enables issues to be listed and saved to a CSV file format on a USB flash drive.

Since crystal oscillators change over time, regular calibration is necessary. In order to avoid possible sync problems, timely inspections – along with regular maintenance is required. The CG Series has a self-correction function, enabling users to conduct maintenance using an external signal input and simple operations.

Amphenol BNC connectors on the chassis use nuts for coupling – making them very durable, Also, a single circuit board is used for each connector - providing excellent resistance to the twisting and pulling of cables, and the suppression of interference between connectors.

The CG Series is the latest in the line of innovative TASCAM professional digital products – engineered with the latest digital clocking technology.

Features

Features

  • High-precision OCXO (Oven-Controlled Crystal Oscillator) with 0.01PPM accuracy
  • Jitter management circuit for stable clock output
  • Glitch-free relocking circuit prevents noise and skipping during clock dropouts and recovery
  • 10MHz input for use with Rubidium or GPS clock generators
  • Twelve word clock outputs, two of which support 1/2Fs, 1/4Fs, 2xFs, 4xFs, and 256xFs the selected rate
  • Two AES/EBU and two S/PDIF outputs
  • Four system presets, saved internally with USB drive backup
  • Sampling Frequencies from 32kHz to 192kHz are supported
  • Panel lock switch to prevent accidental changes
  • Four video clock outputs
  • Video clock input
  • Tri-level sync support for high-definition video
  • Clock Analyzer functions for troubleshooting
  • Video and word clock inputs
  • AES/EBU clock input
  • 1U rack mount size
Specification
Video Input
ConnectorBNC
Input Level0.5Vp-p to 2.0Vp-p
Input Impedance75ohm (ON/OFF selectable by menu)
Input Signal - SD Video Black BurstNTSC (29.97), NTSC B/W(30), PAL(25)
HD Video Tri-Level - 720p50, 59.97, 60
HD Video Tri-Level - 1080p23.976, 24, 25, 29.97, 30, 59.94, 60
HD Video Tri-Level - 1080i/psf23.976, 24, 25, 29.97, 30
Allowable Frequency Deviation+/-10ppm
Word/Ext Input
ConnectorBNC
Input Level0.5Vp-p to 5.0Vp-p
Input Impedance75ohm/50ohm (75/50/OFF selectable by menu)
Supported Frequencies - WORD CLOCK32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
Supported Frequencies - ATOM10.0 MHz
Supported Frequencies - GPS10.0MHz
Allowable Frequency Deviation+/-50ppm
AES3/11 Input
ConnectorXLR-3-31 (1:GND, 2:HOT, 3:COLD)
Input Level0.2Vp-p to 10Vp-p
Input Impedance110ohm
FormatAES11-2003, AES3-2003, IEC60958-4
Supported Frequencies32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
Allowable Frequency Deviation+/-50ppm
Calibration Input
ConnectorBNC
Input Level0.5 to 5.0 Vp-p
Input Impedance50ohm (ON/OFF selectable by menu)
Supported Frequencies - ATOM10.0 MHz
Supported Frequencies - GPS10.0MHz, PPS
Video Output
ConnectorBNCx4 (1-4)
Output Level1.3Vp-p
Output Impedance75ohm
Output Signal - SD Video Black BurstNTSC (29.97), NTSC B/W(30), PAL(25)
HD Video Tri-Level - 720p50, 59.97, 60
HD Video Tri-Level - 1080p23.976, 24, 25, 29.97, 30, 50, 59.94, 60
HD Video Tri-Level - 1080i/psf23.976, 24, 25, 29.97, 30
Word Output
ConnectorBNCx12 (1-12)
Output Level1.0Vp-p to 3.5Vp-p (adjustable in 0.5V steps by menu)
Output Impedance75ohm
Supported Frequencies32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz 1/4xFs, 1/2xFs, 1xFs, 2xFs, 4xFs, 256xFs (Only OUTPUTS 11-12)
AES3/11 Output
ConnectorXLR-3-31 (1:GND, 2:HOT, 3:COLD)x2 (1-2)
Output Level2.5Vp-p
Output Impedance110ohm
FormatAES11-2003, AES3-2003, IEC60958-4
Supported Frequencies32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
S/PDIF Output
ConnectorRCA pin jacksx2 (1-2)
Output Level0.5Vp-p
Output Impedance75ohm
FormatIEC60958-3
USB
USBA data transfer use by a USB flash drive
Connector4-pin type B
ProtocolUSB2.0 High Speed (480Mbps)
Power Supply RatingDC5.0V, 0.2A
Internal Oscillator Performance
TYPEOCXO
Frequency Accuracy+/-0.01ppm (factory default value)
Frequency Stability+/-0.005ppm / day
General
PowerAC100V to 240V, 50/60Hz
Power Consumption11.5W
Operating Temperature Range0˚C to 40˚C
Included AccessoriesPower cords, rack-mounting screw kit, operation manual
Dimensions (H x W x D)1.77" (45 mm) x 19.02" (483 mm) x 12.20" (310 mm)
Weight7.05 lbs (3.2 kg)
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