Motorola Sse 5000 6881094c12 A Manual

6881094C12-ANovember 11, 2004
Glossary-3
DTMFSee dual tone multi-frequency.
dual tone multi-
frequencyThe system used by touch-tone telephones. DTMF assigns a specific 
frequency, or tone, to each key so that it can easily be identified by a 
microprocessor.
EEPROMSee Electrically Erasable Programmable Read-Only Memory.
effective radiated 
powerThe power supplied to an antenna multiplied by the antenna gain in a 
given direction. ERP is usually calculated by multiplying the measured 
transmitter output...

November 11, 20046881094C12-A
Glossary-4
frequencyNumber of times a complete electromagnetic-wave cycle occurs in a 
fixed unit of time (usually one second).
frequency 
generation unitThis unit generates ultra-stable, low-phase noise master clock and other 
derived synchronization clocks that are distributed throughout the 
communication network.
General-Purpose 
Input/OutputPins whose function is programmable.
GPIOSee General-Purpose Input/Output.
groundIn an electrical circuit, a common return path...

6881094C12-ANovember 11, 2004
Glossary-5
liquid-crystal displayAn 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.
LOSee local oscillator.
local oscillatorA device used to generate a signal that is combined with another signal 
in order to mix the second signal to a different frequency.
low-speed 
handshake150-baud digital data sent to the radio...

November 11, 20046881094C12-A
Glossary-6
OSWSee outbound signaling word.
OTARSee over-the-air rekeying.
outbound signaling 
wordData transmitted on the control channel from the central controller to the 
subscriber unit.
over-molded pad-
array carrierA Motorola custom IC package, distinguished by the presence of solder 
balls on the bottom pads.
over-the-air rekeyingAllows the dispatcher to remotely reprogram the encryption keys in the 
radio.
PAPower amplifier.
pagingOne-way communication that alerts...

6881094C12-ANovember 11, 2004
Glossary-7
Radio Service 
SoftwareDOS-based software containing the feature set of a radio. See also 
CPS.
random access 
memoryA type of computer memory that can be accessed randomly; that is, any 
byte of memory can be accessed without touching the preceding bytes.
RAMSee random access memory.
read-only memoryA type of computer memory on which data has been prerecorded. Once 
data has been written onto a ROM chip, it cannot be removed and can 
only be read....

November 11, 20046881094C12-A
Glossary-8
Serial Audio CODEC 
PortSSI to and from the GCAP II IC CODEC used to transfer transmit and 
receive audio data.
Serial Peripheral 
InterfaceHow the microcontroller communicates to modules and ICs through the 
CLOCK and DATA lines.
serial portA hardware interface on a radio that transmits data one bit at a time.
sidebandThe band of frequencies on either side of the carrier frequency, 
produced by modulation of a carrier wave.
signalAn electrically transmitted...

6881094C12-ANovember 11, 2004
Glossary-9
terminationAn impedance, often resistive, that is connected to a radio as a dummy 
load, for test purposes.
thin small-outline 
packageA type of dynamic random-access memory (DRAM) package that is 
commonly used in memory applications.
time-out timerA timer that limits the length of a transmission.
TOTSee time-out timer.
transceiverTransmitter-receiver. A device that both transmits and receives analog 
or digital signals. Also abbreviated as XCVR....

November 11, 20046881094C12-A
Glossary-10
Notes 

Index-1
6881094C12-ANovember 11, 2004
IndexIndex
A
accessories
antennas A-1
batteries A-1
carry A-1
chargers A-1
dust cover A-1
keyload A-2
microphone accessories A-2
microphones A-2
programming cables A-2
surveillance A-2
alignment, tuner
introduction 5-1
main menu 5-2
radio information screen 5-2
reference oscillator 5-3
softpot use 5-3
test setup 5-1
transmit deviation balance 5-7
transmit deviation limit 5-8
transmit power 5-4
transmitter test pattern 5-9
analog mode
receiving 2-2
transmitting 2-3...

Index-2
November 11, 20046881094C12-A
error codes
operational 8-3
power-up 8-2
exploded view 7-3
F
field programming equipment 3-6
FLASHport 1-1
frequency generation unit theory of operation 2-16
G
GCAP II IC U501
power routing 2-5
global control audio and power II IC 501 See GCAP II IC 
U501
H
handling precautions 7-2
K
key, encryption
loading 6-1
knob
channel select
installing 7-11
removing 7-11
volume
installing 7-12
removing 7-11
L
loading an encryption key 6-1
M
maintenance
cleaning 7-1
inspection...