55
XR-VS77, XR-VS55
Playback Adjustment
(1) Head Azimuth Adjustment
•
Do not switch between forward and reverse operation with the screwdriver inserted.
Fig. 5 Head Azimuth Adjustment Screw
REV Azimuth Adjustment Screw
FWD Azimuth Adjustment Screw
250
3dB
10k
12.5k
3dB
4dB
PLAY BACK
250
3dB
10k
12.5k
3dB
5dB
RECORDING
Fig. 6 Frequency Characteristics
(2) Playback Level Adjustment
•
Since this adjustment determines playback Dolby NR level, perform it carefully.
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0 dB: 315 Hz, 250 nwb/m
315Hz
6.3kHz
10kHz
315Hz
14kHz
12.5
kHz
6.3
kHz
500
Hz
250
Hz
125
Hz
10kHz 8kHz
4kHz 2kHz
63Hz 40Hz
1kHz
30s 30s 30s 10s 10s ......................................................................................................... 10s
Fig. 4 STD-331E Test Tape
