Pacific Research Solutions RI-1 - Manual (Page 75)

Pacific Research Solutions RI-1 and PE-1 User Manual
Page 69
SECTION 17 GLOSSARY
BOM: Beginning Of Message. This is a character that is entered at the beginning of a message data sequence.
CARRIER DELAY: The time a repeater transmitter remains on after a valid receiver signal input.
CLOCK: The system clock utilized to meet the needs of the time operated scheduler.
CONTROL CODES: The sequence of DTMF digits sent to perform a command or function.
CONTROL OPERATOR: Any repeater operator, designated to control or modifies the repeater’s operation.
COR: Carrier Operated Relay. An old term referring to the detection of a signal present on a repeater input.
COS: Carrier Operated Switch. This is used interchangeably with COR
COURTESY MESSAGE: A message or tone or set of tones that are transmitted on the repeater output after a user finishes a
transmission to let other user know it is ok to begin a new transmission.
CPU: Central Processing Unit. This is the microprocessor or the brain of your controller.
CTCSS: Continuous Tone Controlled Squelch System. A sub-audio tone in the range between 67 Hz and 250 Hz use for
access to the repeater, auxiliary, and DTMF command entry. Also known as, Private Line or PL (Trademark of Motorola),
Channel Guard or CG (Trademark of GE) and Quiet Channel (Trademark of RCA).
DCS: Digital Coded Squelch. Sub-audio encoded data that can be used to control access to the repeater.
DECREMENT: To reduce a value by one or more counts.
DEFAULTS: Pre-set values that define the system characteristics. A default is the value that the unit is set to when supplied
from the factory.
DIGITAL INPUTS: 0-5 VDC (TTL level) CMOS input. An input can be used to trigger or initiate a Macro.
DIGITAL OUTPUTS: TTL levels, CMOS digital output. Each output can be individually changed in state by either an
S-Command or from within a Macro.
DISABLED: Turned off or not active.
DISCRIMINATOR: This is a circuit in the radio’s receiver that converts the RF information to audio information,
sometimes called a detector.
DTMF: Dual Tone Multi Frequency. Used by telephone systems for dialing, also referred to as touch-tone.
EEPROM: A special type of non-volatile memory that retains its programming information without power.
ENABLED: Turned on or active.
EOC: End Of Command. This is a character is entered at the end of a command sequence.
EOM: End Of Macro or Message. This is a character is entered at the end of the macro or message sequence.
EVENT TRIGGER: When an event occurs in the controller, the controller will trigger a macro. Events can be messages,
timers, clock, digital inputs, etc.