2-17
DNW-A75/A75P
Plug is down
Recording impossible
Back side of the cassette
Same surface
Recording possible
REC Inhibit Plugs
Detection Tabs
In cassette for Betacam or Betacam SP
No. Usage With Tab (Close hole) Without Tab (Open hole)
2 Tape thickness detection Thick (Tape thickness is 20 µm) Thin (Tape thickness is 15 µm)
3 Metal tape detection Oxide tape * Metal particle tape
4 Reel hub diameter detection Small hub Large hub
* :For the metal particle tape, digital recording can be performed using a Betacam SX format.
In cassette for Betacam SX
No. Usage With Tab (Close hole) Without Tab (Open hole)
8 Tape thickness detection Tape thickness is 14.5 µm Tape thickness is other than 14.5 µm
!= Reel hub diameter detection Small hub Large hub
9!/!- Cassette classification detection Without tab (open hole) at only 9 for Betacam SX cassette.
Represents the cassette classification by combination of three tabs.
(See below)
Cassette classification detection tabs
: with tab (close hole), : without tab (open hole)
State of Tabs
9
!/
!-
Cassette Class Remark
Betacam or Betacam SP ———
Betacam SX ———
Digital Betacam Unusable
Except the above class Unusable
2-10. System of Cassettes
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