S-VHS FORMAT (IEC60B(Sec)199)
Super VHS uses higher coercivity tape in standard VHS outline cassettes together with a higher luminance carrier frequency and bandwidth. The result is improved picture definition (>400 horizontal lines), which challenges the performance of many domestic TV receivers and better signal to noise. The longitudinal and FM audio features are as normal VHS. S-VHS cassettes have an ident hole to enable S-VHS recorders to switch automatically between VHS and S-VHS standard according to the tape inserted.
| Signal system |
| Analogue, composite, 'Colour under'. |
| Scanner |
| Geometry |
Helical |
| No. of rotating heads |
2 * |
| Scanner diameter |
62.0 |
mm |
| Rotation speed |
25 |
rev/s |
| Tracks/revolution |
2 |
| Head-to-tape speed |
4.85 |
m/s |
| Video track angle |
57.83 |
degree |
| Track width |
49.0 |
µm |
| Track pitch |
49.0 |
µm |
| Azimuth |
±6.0 |
degree |
| Tape Properties |
| Coercivity |
850 |
Oe |
| Type |
Cobalt modified oxide |
| Width |
12.65 |
mm |
| Thickness (total) |
21.0 (max) |
µm |
| Tape Consumption |
| Linear |
23.39 |
mm/s |
| Areal |
0.017 |
m²/min |
| Shelf volume |
120 (E-240) |
cm³/h |
| Electrical Characteristics |
| Sync tip carrier frequ. |
5.4 |
MHz |
| Peak white |
7.0 |
MHz |
| Chroma s/c |
0.627 ** |
MHz |
| Shortest wavelength |
0.63 |
µm |
* More heads are sometimes provided for improved slow motion etc.
** Strictly fsc + (44 fh + 1,953) Hz.
IEC60B(Sec)199
