User's Manual Part 4

RBS 2308 and RBS 2309 User’s Guide
TT Total Time
TU Timing Unit
TX Transmitter
TXA Transmitter Ant
enna A
TXB Transmitter An
tenna B
TXBP Transmitter Ba
ndpass Filter
TXD Transmitted D
ata
TXU Radio Transmi
tter Unit
UAS Unavailable
Seconds
UAST Unavailabl
e State supervision
UL Underwrite
r Laboratories
uplink
MS-to-system signalling direction.
UPS Uninterrupted Power Supply
UTC Coordinated Universal Time
VCO Voltage-Controlled Oscillator
VSWR Voltage Standing Wave Ratio
RF signal measurement representing the quotient
between transmitted and reflected voltage.
X bus
Carries transmit air data frames between transceivers.
Y link
Interface between a DXU and each DSP system in a
core-based TRU.
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EN/LZT 720 0027 Uen R8A 2006-06-27