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
|
|
