VeriFone VX 520 Specifications Page 183

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GLOSSARY
VX 520 REFERENCE GUIDE 183
Remote host computer A host computer
connected to a VX 520 terminal over a dial-up
telephone line to download files or data, or to
process transactions. The opposite of remote is
local.
RS-232 A widely used standard interface that
covers the electrical connection between data
communication equipment, such as a modem, and
data terminal equipment, such as a microcomputer
or computer terminal. The RS-232 interface
standard was developed by the EIA (Electronic
Industries Association) and is essentially equivalent
to the CCITT’s V.24 interface.
Scroll To move all or part of the information
displayed on a screen up or down, left or right, to
allow new information to appear. For the VX 520,
text that does not fit entirely within the display area
can be scrolled to the left or right using the pound (#)
and asterisk (*) keys.
Search key Also called key. In the VX 520, a short
character string used by an application to identify a
keyed file record stored in CONFIG.SYS file(s). For
example, *ZA or *OT. A keyed file record consist of
two parts: a search key to identify the record, and the
variable data stored in the record. See also Keyed
file record and CONFIG.SYS file.
Serial port A connection point through which
digital information is transferred one digital bit at a
time. Same as serial interface. The VX 520 terminal
has one serial port, labeled RS-232. The main serial
port on a download computer is usually assigned the
device ID, COM1.
Signature file A digital file with the filename
extension *.p7s generated in an industry-standard
format by the VeriShield File Signing Tool. The
output of the file signing tool is a signature file in an
industry-standard format.
SRAM See RAM.
Subroutine A software routine that can be part of
another routine. When a main routine calls a
subroutine, program control is transferred to the
subroutine. When the subroutine is completed,
control reverts to the instruction in the main routine
immediately following the subroutine call.
Swipe The action of sliding a magnetic stripe card
through a terminal card reader. The VX 520 card
reader has a bi-directional swipe direction. The user
must hold the card so that the magnetic stripe is
faces in and towards the keyboard.
Verix Terminal Manager For the VX 520,
terminal manager temporarily disables normal mode
operations, allowing you to perform local functions
such as downloads, diagnostics, and other
operations that cannot be performed while the
application program is running.
At startup, the terminal displays a copyright notice
screen that shows the version of VX 520 system
firmware stored in terminal flash memory, the date it
was loaded into the terminal, and the copyright
notice. This screen appears for three seconds. To
enter terminal manager, simultaneously press the F2
and F4 keys during this three-second period.
Pressing any other key(s) during that period resets
the copyright notice screen to display an additional
three seconds.
See also Local functions and Normal Mode.
Verix Terminal Manager password A unique
set of characters entered by the user to access the
terminal manager local functions of the terminal. A
default password is supplied with each terminal. For
the VX 520 terminal, the default system password
is: “1, Alpha, Alpha, 66831”.
To prevent unauthorized access, change the default
password to a confidential password on terminal
deployment. Store the new password in a safe place,
as it is impossible to restore the terminal default
password without sending the unit to VeriFone for
service.
Telephone download The process of transferring
an application program and/or data from a remote
host or download computer to a terminal over a
telephone line.
Telephone jack Also, telephone line wall jack.
Insert a modular connector into a telephone jack or
receptacle. Also, modular-type sockets for
connecting telephone line cords. The VX 520
terminal has a TELCO RJ-45-type telephone jack on
the back panel used for a direct connection to a
telephone line wall jack.
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