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D1 (4:2:2) FORMAT (IEC 1016)

A component digital video format, with digital audio, recording format using 19 mm tape cassettes. The digital video signals conform to CCIR recommendation 601. The luminance sampling rate is 13.5 MHz and that for the R-Y/B-Y is 6.75 MHz with 8-bit quantising in all cases. The bandwidths are 5.75 MHz and 2.75 MHz respectively. Four channels of digital audio are provided using 16 to 20 bit quantising at 48 kHz. The audio system conforms to EBU Tech. Doc 3250 (to be replaced by a CCIR recommendation).

Signal system
Digital, component.
Scanner
Geometry Helical
No. of rotating heads 12 *  
Scanner diameter (top) 75.0 * mm
Rotation speed 150 * rev/s
Tracks/revolution 4 *  
Head-to-tape speed 35.6 m/s
Track angle 5.40 degree
Track width 40.0 µm
Track pitch 45.0 µm
Azimuth Perpendicular
Tape Properties
Coercivity 850 Oe
Type Cobalt modified oxide
Width 19.01 mm
Thickness (total) 13 or 16 (max) µm
Tape Consumption
Linear 286.9 mm/s
Areal  0.327 m²/min
Shelf volume 1,960 cm³/h
Electrical Characteristics
Shortest wavelength 0.9 µm
Input data rate 216 vid 3.07 aud Mbit/s
Packing density 2,2106 bit/mm

* Value for a typical implementation. The standard specifies the foot-print on tape, not how it is to be achieved.      IEC 1016

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