Glossary, Glossary glossary of terms – Nikon RADIUS CM200 User Manual
Glossary of Terms
Automatic Level Control: a circuit in the transmit RF path that controls RF
power amplifier output, provides leveling over frequency and voltage, and pro-
tects against high VSWR (Voltage Standing Wave Ratio).
Audio Signalling Filter Integrated Circuit with voice compander.
Customer Programming Software.
Electronically Erasable/Programmable Read-Only Memory: used by the radio
to store its personality.
Software, or a software/hardware combination of computer programs and data,
with a fixed logic configuration stored in a read-only memory. Information can-
not be altered or reprogrammed.
Frequency Generation Unit.
Gallium Arsenide: a type of crystalline material used in some semiconductors.
Inbound Signalling Word: data transmitted on the control channel from a sub-
scriber unit to the central control unit.
Liquid Crystal Display: a module used to display the radio’s current operating
channel or system and scan status.
Lateral Diffusion MOS.
Longhorn Data: a bidirectional 0-5V, RS-232 line that uses the microcontroller’s
integrated RS-232 asynchronous serial communications interface (SCI) periph-
Low Level Expander: slight amount of volume expansion; used to improve the
signal to noise ratio.
Low-Speed Handshake: 150 baud digital data sent to the radio during trunked
operation while receiving audio.
Motorola Data Communication.
Motorola Radio-Telephone Interconnect: a system that provides a repeater
connection to the Public Switched Telephone Network (PSTN). The MRTI
allows the radio to access the telephone network when the proper access code