SMC Networks SMC2670W Instrukcja Użytkownika Pobierz pdf (Strona 41)

FHSS (Frequency-Hopping Spread Spectrum) - Is transmis-

sion technology used in wireless transmissions where the data

signal is modulated with a narrowband carrier signal that

"hops" in a random but predictable sequence from frequency

to frequency as a function of time over a wide band of fre-

quencies.The signal energy is spread in time domain rather

than chopping each bit into small pieces in the frequency

domain. This technique reduces interference because a signal

from a narrowband system will only affect the spread spec-

trum signal if both are transmitting at the same frequency at

the same time. If synchronized properly, a single logical chan-

nel is maintained.

Firmware - Code that is written onto read-only memory (ROM)

or programmable read-only memory (PROM). Once firmware

has been written onto the ROM or PROM, it is still new settings

remain even when the device is turned off.

IEEE - The Institute of Electrical and Electronics Engineers, pro-

nounced I-triple-E, is an organization that develops standards

that often become national and international standards.

IP Address - An identifier for a computer or device on a TCP/IP

network. Networks using the TCP/IP protocol route messages

based on the IP address of the destination. The format of an IP

address is a 32-bit numeric address written as four numbers

separated by periods. Each number can be zero to 255. For

example, 192.168.2.25 is a valid an IP address.

IPCONFIG - A utility that provides for querying, defining and

managing IP addresses within a network.This utility is usually

run from the DOS prompt and is the perfect tool for trou-

bleshooting connection issues.

LAN - A local area network (LAN) is a group of computers and

associated devices that share a common communications line

and typically share the resources of a single processor or server

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SMC Networks SMC2670W Instrukcja Użytkownika Strona 41