SMPTE 15M – Television Analog Recording – 1-in Type B Helical Scan – Basic System Parameters
This standard specifies the basic system parameters; i.e., the positions of recording head gaps, the scanning configuration, the axis of rotation of the video head wheel, and the appropriate tape tension for 1-in type B helical-scan television tape recorders for 525/60 monochrome or NTSC color systems.
