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QUBE
G LOSSARY
Sysgen
Spacelabs Healthcare’s method to enable
purchased options.
Tap block plug
Dummy plug used to seal up an unused hole
tapped into a coaxial cable on an Ethernet system.
Tap block
Device used to “tap” into an active or inactive
Ethernet coax cable.
TCP/IP
Transmission Control Protocol/Internet Protocol
used as an underlying mechanism for moving
packets of information between different machines
on a local or wide-area network.
TFT
Thin-film transistor; a technology used in liquid
crystal displays
TLB
Translation Lookaside Buffer
TLS
A protocol tht allows secure internet
communications. TLS involves three basic phases:
1) peers negotiate the encryption algorithm;
2) encryption keys are exchanges; 3) symmetric
cipher encryption and message authentication.
Terminator
A resistive load attached to each end of a coaxial
cable segment, or at a single end of an SDLC line.
The function of a terminator is to match the
characteristic impedance of the cable.
Transceiver (Ethernet)
Device located on coax cable or line powered
attaching monitors to the network. These devices
are bi-directional.
TTL
Time to live. The allowed number of hops the IP
packet can take across network devices.
TXD (Transmit Data)
Transmit Data. Used in communications protocols.
UART
Universal Asynchronous Receiver/Transmitter; a
microchip that controls the computer's interface to
its attached serial devices
UPS
Uninterruptible Power Supply. Used to hold power
up until AC mains are restored.
USB
Universal Serial Bus
UUT
Unit Under Test
VBA
Video Bus Array
VBB
Lithium Voltage Battery Backup
VPP
Voltage used for programming devices
VRAM
Video RAM
WEP
Wired Equivalent Privacy. A security protocol used
to secure wireless networks.
WLAN
Wireless Local Area Network.
WDT
Watch Dog Timer
WPA
WiFi Protected Access. An 802.11i IEEE standard
protocol that provides a means to establish secure
communications on WiFi networks.
XON/XOFF
Used in communication definitions
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