Canon PC1000s Service Manual page 336

CHAPTER 7 TROUBLESHOOTING
space). As log as the other party complies with the International Standards of ITU-T, the ma-
chinecan communicate with it by means of subaddresses.
At times, an ID number (referred to as a "password") is used to restrict access to a loca-
tion indicated by a subaddress.
With some models, polling based on subaddresses is called "selective polling", and a
subaddress used at time of polling is called a "selective polling address".
4 . 5 . 3 . 1 1 Password
A password used by a Canon facsimile machine may be any of the following:
Password for Subaddress Communications:
This is an ID number used for a subaddress communication and, as in the case of a
subaddress, it consists of 20 or fewer characters (numerals,
*,
#,
space).
Communication Password:
This is an ID number used for a password communication. Some models use
4
decimal
characters (0000 through 9999). while some use 3 decimal characters (000 through 255).
Password Used When Making Settings:
A
password may also be used for memory lock
Rx,
call restriction, and other
-
Memo functions. Such a password consists of 4 decimal characters (0000 through
9999), and it is important to remember that these passwords
are
used inside
the machine and are not intended for communication ~rocedures.
4.5.3.12
Signals
Tonal Signal:
A tonal signal consists of sinusoidal waves of a specific frequency, and may be thought of
as a sound carrying a meaning. CNG, CED, and ANSam are tonal signals.
Binaty Signal:
A binary signal is used to indicate the meaning of a procedure. It is either '1' or 'O', modu-
lated according to frequency, and is used as G3 procedure signals.
Procedure Signal:
It is a generic term for a tonal signal and a binary signal.
Preamble:
It is a signal attached to the beginning of a binary signal, and is used to synchronize mo-
dem signals for a procedure signal.
Image Signal:
Of procedure signals, it is used for actual transmission of image data.
Significant Signal:
It is a signal whose significance can be understood by a facsimile machine that receives it.
and it is free of a transmission error.
COPYRIGHT 02002 CANON INC.
CANON PClOOOslimageCLASS D800s REV
1 WG. 2002