Clear-Com AB-120 - Manual (Page 26)

Clear-Com Communication Systems
AB-120 Announcer Console Instruction Manual
4 - 2
station at a time can talk while others listen. A walkie-talkie is a good
example of half-duplex communication.
IFB: The term means “Interrupt Fold Back.” A fold-back is a monitor
system that allows, for example, talent to hear their voices or
musicians to hear their voices and instruments on stage. IFB (program
interrupt) disconnects the audio source while the talk button on the
main station is pushed.
ISO: A private conversation path. An ISO channel allows one to
simply push a button and transfer themselves and the person they
wish to speak with to an isolated channel.
Linking: Linking ties separate channels into one single party line.
Main Station: This is a product that includes both the ability to
communicate with multiple channels without connecting them together,
and to power all the stations connected to these channels.
Master Station: A remote station which needs AC power to operate.
Multi-Channel: More than one channel.
Party Line (P.L.): Intercom system in which all people talking on the
system can talk or listen to each other simultaneously. Also called
conferencing.
Point to Point: One path to one person.
Program: Audio source that is fed into the intercom channels.
Program Interrupt: Disconnects the audio source while the talk
button on the main station is pushed (IFB).
Remote Mic Kill (RMK): The ability for certain main stations to shut
off all microphones on beltpacks in a system.
Remote Station: Like the beltpack, this would be any of the products
connected to the intercom line that allow duplex or half-duplex
conversation, but do not contain a power supply.
Sidetone: This is your own voice heard in your earphone as you are
speaking.
Stage Announce (SA): Redirects output of the main station's
microphone to an external destination (such as a PA system).
Station: A station is connected to one or more channels. For example,
if you have six people who need to hear one director, you have a
seven-station single-channel need. If the same director needs to speak
privately to any one of the six, add a second channel. You now have a
seven-station, two-channel system.
Termination: Passive network that is connected in each channel,
usually on the power supply or main station.