6881094C31-E
November 16, 2006
Glossary-9
time-out timer
A timer that limits the length of a transmission.
TOT
transceiver
Transmitter-receiver. A device that both transmits and receives analog
or digital signals. Also abbreviated as XCVR.
transmitter
Electronic equipment that generates and amplifies an RF carrier signal,
modulates the signal, and then radiates it into space.
TSOP
See thin small-outline package.
TX
Transmit.
UART
See also Universal Asynchronous Receiver Transmitter.
UHF
Ultra-High Frequency.
Universal
Asynchronous
Receiver Transmitter
A microchip with programming that controls a computer's interface to its
attached serial devices.
Universal Serial Bus
An external bus standard that supports data transfer rates of 12 Mbps.
USB
VCO
See voltage-controlled oscillator.
vector sum excited
linear predictive
coding
A voice-encoding technique used in ASTRO digital voice.
VHF
Very-High Frequency.
VIP
Vehicle Interface Port.
VOCON
vocoder
An electronic device for synthesizing speech by implementing a
compression algorithm particular to voice.
vocoder/controller
A PC board that contains an ASTRO radio’s microcontroller, DSP,
memory, audio and power functions, and interface support circuitry.
voice encoder
The DSP-based system for digitally processing analog signals, and
includes the capabilities of performing voice compression algorithms or
voice encoding.
voltage-controlled
oscillator
An oscillator in which the frequency of oscillation can be varied by
changing a control voltage.
VSELP
See vector sum excited linear predictive coding.
Term
Definition
Summary of Contents for ASTRO XTS-5000
Page 7: ...vi Table of Contents November 16 2006 6881094C31 E Notes ...
Page 11: ...x List of Figures November 16 2006 6881094C31 E Notes ...
Page 17: ...November 16 2006 6881094C31 E xvi CommercialWarranty Notes ...
Page 31: ...November 16 2006 6881094C31 E xxx Portable Radio Model Numbering System Notes ...
Page 83: ...November 16 2006 6881094C31 E 3 44 Theory of Operation Encryption Module ...
Page 135: ...November 16 2006 6881094C31 E 5 44 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 175: ...November 16 2006 6881094C31 E 7 32 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 367: ...November 16 2006 6881094C31 E Glossary 10 Notes ...
Page 373: ...Index 6 November 16 2006 6881094C31 E Notes ...