Sony DNW-A75 Maintenance Manual page 55

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