User`s guide

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Default Standard radio settings. Also refers to standard settings that the RSS
uses for input/output (I/O) port locations, file locations, display
settings and other field values.The value a field will automatically
contain if a user does not change it
Default Drive The disk or diskette drive that the RSS will use to get or save data or
files. You can change the default drive from the SERVICE SOFTWARE
CONFIGURATION MENU ( F9 ).
De-key Turning the radio transmitter to the off position.
Deviation The measure of the amount of modulation applied to a transmitter
signal.
Digital Private-Line See “DPL”.
Digital Voice Protection (DVP) One of several encryption algorithms used to protect the security of
confidential radio communications.
Disk Drives Magnetic media that the computer uses to store files.
Display The CRT terminal that the computer displays information on. Also,
the LED or LCD indicators on the radio. (See LED or LCD.)
Dual Mode Operation The ability of a radio to operate in both conventional and Trunked
modes.
Dual-Tone Multiple Frequency See “DTMF”.
Dynamic Regrouping A feature which allows a dispatcher to reassign talkgroup units
without any action on the part of the radio users. The dispatcher may
move selected units into other talkgroups, create new or special
talkgroups consisting of selected units, and merge separate talkgroups
into a single talkgroup.
EEPROM Electronically-Erasable Read-Only Memory. Used by the radio
microcomputer system to store the radio’s codeplug data (personality).
EXTAL Crystal oscillator clock line. Provides the 3.888MHz input to the
microcomputer.
Emergency Alarm This feature allows the user to notify the dispatcher of a crisis situation
by simply pressing a button on the radio or flipping a hidden switch
inside his or her vehicle. An alarm is immediately sent to the
dispatcher along with the Unit ID so that assistance can be provided.
This transmission will continue until the dispatcher acknowledges the
emergency.
Encoder Features Features relating to the transmit (or encode) portion of a signalling
system(s).
External Alarm A feature designed to let the dispatcher of emergency situations. When
External Alarm is activated and a Call Alert is received, a pin on the
accessory connector will have voltage on it for 7 seconds. This voltage
can be used to activate a relay which can turn on the horn or lights.