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Gemini G3 – User Manual
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Spatial Diversity
Composite information from independent diversity branches using antennas
spaced apart is used with “Smart Combining” to minimize fading and other unde-
sirable effects of multipath propagation. (See Parallel Decode)
SRRCnFSK
Square Root Raised Cosine (
n
= level) Frequency Shift Keying. Type of fre-
quency modulation of data signals performed by the GeminiG3 radiomodem.
Static IP Address
A fixed address assigned to a computer or an interface that is connected to a net-
work.
Static Routing
The forwarding of data in a network via a fixed path.
Subnet Mask
A bit mask used to select the bits from an IP address that correspond to the sub-
net. Each mask is 32 bits long, with one bits in the portion that identifies a net-
work and zero bits in the portion that identifies a host.
Switch (Ethernet)
Computer-networking device that allows sharing a limited number of ports to
connect computing devices to host computers. Replace network hubs.
TCP/IP
Transmission Control Protocol/Internet Protocol - A network protocol for trans-
mitting data that requires acknowledgement from the recipient of data sent. Han-
dles retries and flow control.
Telnet
A user command and TCP/IP protocol used for accessing remote PCs.
TFTP
Trivial File Transfer Protocol - A version of the protocol that has no directory or
password capability. Depends on UDP and is used on local network.
Topology
The physical layout of a network.
Transparent
A transparent unit transmits all data without regard to special characters, etc.
Tx/Rx LED
Airlink data activity
UDP
User Datagram Protocol - A network protocol for transmitting data that does not
require acknowledgement from the recipient of the data that is sent.
Upgrade
To replace existing software or firmware with a newer version.
URL
Universal Resource Locator - The address of a file located on the Internet.
VIS
Vehicular Information Solutions. Dataradio’s name for a series of products spe-
cially designed for mobile data.
WINIPCFG
A MS-Windows 98 or MS-ME utility that displays the IP information for a par-
ticular networking device.
WLAN
Wireless Local Area Network - A group of computers and associated devices that
communicate with each other wirelessly.