7-1
7 Recording and Playback AUX Digital Data
The SIR-1000W can record and play back AUX digital data signals and analog data
signals simultaneously.
The rotating pulse and trigger pulse can be recorded and played back as the AUX digital
data signal.
•
Internal sampling frequencies for the AUX digital channels are as follows.
Tape Speed
1 (normal speed)
1/2
1/4
1/8
1/16
Table 7-1
When make a recording on the AUX digital channel, the signal should conform to the
following conditions:
Sampling frequency
384 kHz
192 kHz
96 kHz
48 kHz
24 kHz
Ts (approx)
6
µ
s
12
µ
s
25
µ
s
50
µ
s
100
µ
s
•
Attention should be paid to selecting the sampling rate in order to avoid the jitter inherent
in discrete sampling.
Tr
Ts
Tf
Ts
Ts
: Minimum hold time
(See Table 7-1.)
Tr/Tf : Level transition time
(100
µ
s regardless of tape
speed)
d1
d2
d3
d4
Input
fi
Int Clock
fs
Output
fo
fi
: Input Waveform
fs
: Sampling Waveform (Internal Clock)
fo
: Output Waveform
d1 to d4 : Phase-shift
Example of phase shift caused by sampling