FUJITSU fi-4120C - Manual (Page 172)

GL-7
Read operation
Refers to the reading operation including Simplex reading and
Duplex reading.
RS-232C interface
A type of serial interface. See Serial interface.
SCSI ID
Used to specify a particular SCSI device when the initiator selects
a target or the target reconnects to the initiator.
Simplex reading mode
Only the front side of the document is read in this mode. Place the
documents face up at the center of the ADF paper chute.
Smoothing
A process that eliminates “jaggies” from slanted lines and curves.
Irregular convexities are deleted and irregular concavities filled in.
This is useful in OCR applications, for example.
Temporary Error
An error correctable by the operator.
Time-out limit
This is the time the scanner waits for next document insertion after
the last document feeding. The scanner returns Paper Empty when
no document is set after time-out limit.