Brother MFX-1200 ч.4 - Инструкция по эксплуатации - Страница 23

Ju s t   i n   c a s e  

Default

 The setting your machine will always refer to if no other action has been pro-

grammed. For example, you can set the default for this machine to send a fax by using its
memory. If you set this action as the default, that s how your machine will always send a fax,
until you tell it to do differently.

Delayed command

 Transmission or polling operation set by the user to occur later, auto-

matically, at a predetermined time. Great for reducing costs by making fax calls during times
when telephone costs are lowest, such as late at night or on weekends.

Digital  Using the binary system (which uses a combination of 0s or 1s) to describe every-
thing, so that 0 means off and 1 means on; digital fax machines convert the graphic image of
your document into a series of zeros and ones by using the binary system of transmission to
encode black and white occurrences. This increases transmission speed by passing over white
spaces. See also White-line skip.

Digital fax  Unlike analog systems that scan every portion of a document, digital fax
machines survey a document s overall picture content. Digital fax machines scan a line and
convert the information into a binary code of zeros and ones. The fax machine takes this
information and compresses it, providing high transmission speeds. Many Muratec units
offer proprietary methods for faster transmissions between Muratec-manufactured units (see
also 

MSE

,

SMSE

).

DIP

switches   Dual in-line package switch; a two-position on/off switch. Many Muratec fax

machines include 

DIP

switches to control optional settings or features.

Document feeder   The adjustable slot into which users place documents for faxing or
copying.

Effective printing width

 The widest image that can be printed on a fax.

Effective scan width

 The maximum width the scanner in a fax can scan during trans-

mission.

F-Code

 A fax-industry standard created by the 

ITU

-

T

for sub-addressing/password-based

communications. Because F-Code is an industry standard, Muratec fax machines as well as
all 

ITU

-

T

equipped fax machines from other manufacturers can communicate with each other

using sub-addressing.

Facsimile (or fax)    A form of communication involving the scanning and decoding of a docu-
ment into electrical signals and transmitting of the document, over telephone lines to another
device. This device then reconstructs the signals to produce an exact duplicate of the document.
Also, a machine that performs such communication.

Fallback  Group 3 fax machines operate at the highest transmission speed possible on a
given telephone line. Muratec systems offer automatic fallback; if line quality drops during
transmission, the fax machine will reduce speed to the fastest possible level.

File number   A number the machine gives to each document it stores for a batch, F-Code
or polling operation.

Fine resolution   2 0 3

H

×

196

V

lpi. Also shown as 

G

3

F

( Group 3 fine ) on some fax units.

Grayscale  Not a level of resolution, but a method of scanning and transmitting halftone
images. Fax machines with grayscale abilities interpret photographs in 
levels of gray between white and black. The transmitting fax machine must have grayscale
ability to send a photographic image accurately, but the receiving machine does not need it to
print the image.

Group 3  Refers to fax machines that use digital encoding. These units transmit one page
in less than one minute and produce resolution of 203 

×

98, 203 

×

196, or 406 

×

392 lpi.

Halftone   S e e  Grayscale.

Handshaking

 An exchange of data between telecommunications and/or 

computer equipment that  introduces two systems to each other. For example, faxes use a
handshaking protocol to identify the 

ITU

-

T

group of each unit and to begin fax communication.

Hub   S e e  Relay broadcasting.

Hz (or Hertz)    A measure of frequency equal to one cycle per second. Used in the specifica-
tions for a fax machine, it identifies the 

AC

power the unit requires.

ITU

-

T

 International Telecommunications Union   Telecommunications Sector. (Formerly

known as 

CCITT

, for Consultative Committee for International Telegraph and Telephone.) A

telecommunications forum for member countries of the United Nations whose Study Group

XIV

established the primary groups for fax equipment, covering communication protocol and

transmission. Muratec Group 3 fax machines offer the fastest transmissions allowed by the

ITU

-

T

when communicating with other Group 3 units.

ITU

-

T

Test Document 1

 Also called the Slerexe ( slehr-rehks ) letter; An 

ITU

-

T

standard

document with a known black density which fax makers often use to test transmission
speeds of their fax machines. Published transmission speeds are also based on this document.

ITU

-

T V

.29 and 

V

.27 ter.

 A standard set of communication procedures allowing fax

machines to talk to all other units adhering to those standards.

JBIG

  Joint Bi-level Image experts Group, the new 

ITU

-

T

standard image data compression

method. As 

JBIG

compresses the data more efficiently than 

MMR

, it is especially effective when

transmitting halftone (grayscale) image document.
(Of course, the compression ratio may vary with the image data.)

Laser printing

 A plain-paper printing system. Toner is attached to a charged drum and

an image is transferred onto plain paper through electrical currents, then fused with heat
and pressure to produce a dry, permanent printout.

LCD

 Liquid crystal display. Used on some Muratec units for status displays.

Leased line   S e e  Private line.

Load number

 A number assigned to telecommunications equipment used in Canada;

designed to help prevent overloading on a telephone circuit. See also Ringer equivalence num-
ber.

Location 

ID

  S e e  Station 

ID

.

lpi  Lines per inch. The way fax image resolution is measured. (For example, see Normal
resolution.)

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