Description
The reference signal tone provides the Dolby B reference level during playback and is used to set the gain of the playback amplifier. The tape has the following parameters:
Tape speed:
4.76 cm/s
Signal:
400 Hz
Reference value magnetic flux:
200 nWb/m (ANSI)
Flux level (relative to the reference value):
0 dB (± 0.2 dB)
Duration:
approx. 10 min.