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B-FORMAT Bosch/FESE/BTS (IEC 602)

Segmented 25.4 mm helical scan format developed by Bosch/FESE/BTS. An EBU standard format which is widely used in German-speaking countries and south America. In addition to the BCN open-reel versions, there are also some B-format cartridge machines.

 

Signal system
Analogue, composite, segmented.
Scanner
Geometry Helical
No. of rotating heads 2  
Scanner diameter 50.33 mm
Rotation speed 150 rev/s
Tracks/revolution 2  
Head-to-tape speed 24.00 m/s
Video track angle 14.3 degree
Track width 160 µm
Track pitch 200 µm
Azimuth Perpendicular  
Tape Properties  
Coercivity 650 Oe
Type Cobalt modified oxide
or chrome dioxide
Width 25.4 mm
Thickness (total) 30 µm
Tape Consumption  
Linear 243.0 mm/s
Areal 0.37 m²/min
Shelf volume 916 cm³/h
Electrical Characteristics
Sync tip carrier frequ. 6.76 MHz
Blanking 7.40 MHz
Peak white 8.90 MHz
Shortest wavelength 2.70 µm

IEC 602

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