Description
The reference level tone is used for the adjustment of the playback chain of the recorder according to the required operating level in playback mode.
Parameters:
Tape speed:
19.05 cm/s (7.5 ips)
Track width:
Full track
Azimuth position:
(90° ± 1′)
Signals:
1000 Hz, 700 Hz
Reference value magnetic flux (track no. 1):
250 nWb/m (ANSI) = 0 dB
Track no.:
1. 1000 Hz, 250 nWb/m (ANSI), CCIR = 0 dB
2. 1000 Hz, 320 nWb/m (ANSI), CCIR = 2.14 dB
3. 700 Hz, 185 nWb/m (ANSI), NAB = -2.53 dB
4. 1000 Hz, 250 nWb/m (DIN), CCIR = -0.79 dB
5. 1000 Hz, 320 nWb/m (DIN), CCIR = 1.35 dB
6. 1000 Hz, 257 nWb/m (DIN), CCIR = -0.55 dB
Duration:
approx. 10 min.
