Pioneer tuning fork Service Manual page 53

/. Accurate search with
P C M tracks can be used for the functions of program
search, address search, time display and auto edition. P C M
data area appears sixty times a second. 6 bytes or 48 bits
of Identification (ID) information can be recorded in each
of the area. One byte is used for determining format.
Another one byte is used for identifying the information
stored by the remaining 4 bytes.
g. PCM audio recording
Pioneer has developed a compatible 8mm VCR-ACR
VE-D70 which can also be used as a P C M audio tape deck.
It records for 9 hours with a 90-min tape and 24 hours with
a 120-min tape (1/2 speed) in PCM-multi mode. One vid­
eo track is divided into six P C M audio tracks as shown
in Fig. 44, and whole the tape surface is used for audio
recording.
PCM-ID
180°
Extended
PCM 3
tracks
2
33°
1 (Normal PCM track)
Fig. 4 4 8mm Tape Pattern in PCM-multi mode
6
5
4
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