6871620L01-C
May 28, 2008
Glossary
Glossary-5
liquid-crystal display
An LCD uses two sheets of polarizing material with a liquid-crystal
solution between them. An electric current passed through the liquid
causes the crystals to align so that light cannot pass through them.
LO
Local oscillator.
low-speed
handshake
150-baud digital data sent to the radio during trunked operation while
receiving audio.
LSH
Master In Slave Out
SPI data line from a peripheral to the MCU.
Master Out Slave In
SPI data line from the MCU to a peripheral.
MCU
MDC
Motorola Digital Communications.
MDI
MCU/DSP Interface internal to the Patriot IC.
MHz
Megahertz
One million cycles per second. Used especially as a radio-frequency
unit.
microcontroller unit
Also written as µC. A microprocessor that contains RAM and ROM
components, as well as communications and programming components
and peripherals.
MISO
MOSI
multiplexer
An electronic device that combines several signals for transmission on
some shared medium (e.g., a telephone wire).
MUX
NiCd
Nickel-cadmium.
NiMH
Nickel-metal-hydride.
OMPAC
See over-molded pad-array carrier.
open architecture
A controller configuration that utilizes a microprocessor with extended
ROM, RAM, and EEPROM.
oscillator
An electronic device that produces alternating electric current and
commonly employs tuned circuits and amplifying components.
OSW
OTAR
Term
Definition
Summary of Contents for ASTRO XTSTM 4000
Page 1: ...COLOR CHORDS 7 ASTRO XTSTM 4000 Portable Radio Detailed Service Manual ...
Page 2: ......
Page 16: ...May 28 2008 6871620L01 C xiv Commercial Warranty Notes ...
Page 22: ...May 28 2008 6871620L01 C 1 6 Introduction Notes ...
Page 26: ...May 28 2008 6871620L01 C 2 4 Radio Power Notes ...
Page 56: ...May 28 2008 6871620L01 C 3 30 Theory of Operation Notes ...
Page 100: ...May 28 2008 6871620L01 C 6 8 Troubleshooting Waveforms Notes ...
Page 194: ...May 28 2008 6871620L01 C B 2 Motorola Service Centers Notes ...
Page 204: ...May 28 2008 6871620L01 C Glossary 10 Glossary Notes ...
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