Operating instructions

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mechanical KVM switch
A KVM switch which does not utilize microprocessors to communicate with the attached computers; a
passive switch.
microprocessor
A single-chip computer element that contains the control unit, central processing circuitry and arithmetic and
logic functions and is suitable foruse as the central processing unit of a microcomputer or a dedicated
automatic control system. (Source: Illustrated Dictionary of Electronics, 4
th
Ed., Turner and Gibilisco).
network
A group of two or more computer systems equipped with hardware and software to allow shared access.
OSD
Abbreviation for On Screen Display. A method of controlling a KVM switch that provides an on-screen menu
providing feedback to the user regarding the status of attached computers in response to keyboard or mouse
commands, such as port information, names of assigned computers, computer platform, etc.
ohm
(Symbol: Ω) The basic unit of resistance, reactance or impedance. A resistance of 1 ohm passes a current of 1
ampere in response to an applied emf of 1 volt. (Source: Illustrated Dictionary of Electronics, 4
th
Ed., Turner
and Gibilisco).
passive switch
A KVM switch which does not utilize microprocessors to communicate with attached computers; a
mechanical KVM switch.
platform
The type of computer (i.e., Sun, Macintosh, PS/2, etc.), a standard around which a system can be developed;
often used as a synonym of operating system.
RS232
Abbreviation of recommended standard-232C, a standard interface approved by the Electronic Industries
Association (EIA) for connecting serial devices. This standard is utilized in a method of controlling KVM
switches in which a module is built into the switch console which allows users to utilize on-screen commands
rather than console buttons. This low-power consumption application is helpful when the KVM application
resides at a remote location, and is particularly well-suited to multiple user applications. See the Section on
RS232 Compatibility for additional information.
scan codes
A code which tells the computer which key (or combination of keys) is deparesed and when it is released.
Utilized in KVM technology to initiate tasks.
security features
Authorized access features of the OSD system used on NTI matrix KVM switches which allow the network
administrator to assign user names and passwords. The administrator can then enable or disable all security
features and select which computers each user can access. Once enabled, a user or administrator must “login”
in order to access any of the computers connected to the switch.