Telex 38109-977 manual Matrix Maximum SPL Mho Mic Micro µ Microcontroller

Matrix

Maximum SPL

Mho

Mic

Micro (µ)

Microcontroller

Microphone Microprocessor

milli (m) Mixer

Mix-Minus Bus / feed

Monaural

Monitor

Mu (µ)

Mu Metal Shield Multiplexing

mV mW

“Matrix” is a term inherited from earlier point-to-point intercom systems, where all point-to-point communication was accomplished by closing specific switches in a switching matrix. Examples include the RTS™ CS9500, CS9600, and CS9700 Intercom Systems. In many instances, “Matrix” is used interchangeably with “Intercom System”. RTS™ ADAM™, ADAM™ CS, and Zeus™ Intercom Systems, on the other hand, do not use a switching matrix, but use a method called Time Division Multiplexing (TDM), in which communications are routed as digital packets. However, use of the term “matrix” persists since packet routing basically accomplishes the same thing as a conventional switching matrix: namely, connecting distinct talkers and listeners.

The acoustic level above which operation changes from linear to nonlinear. This is a specification usually for microphones.

The old unit of conductance or transconductance, now a siemen. The more familiar units of transconductance are amperes (output) per volts (input). For electronic devices, the units are usually millisiemens or milliamperes per volt.

Short for Microphone

Micro is a prefix meaning one millionth. For example a one microfarad capacitor has a capacitance of a millionth of a farad.

A Microprocessor that has a built in RAM (Random Access Memory), built in ROM (Read Only Memory), parallel type inputs / outputs, and often a serial input / output.

A transducer that converts sound into an electrical output or voltage.

The heart of a computer on a chip. Has inputs and outputs and can read RAM (Random Access Memory) and ROM (Read Only Memory). Used in the Model 802 to process stimuli such as button pushing and incoming tally signals and produce reactions such as blinking or steady lamp illumination, crosspoint closure, tally generation, relay control, or audible chime signal.

A prefix that means one-thousandth.

An electronic device used to combine several signals inputs to a single output or to stereo outputs. Often other features are added to make it easy to achieve the basic goal.

1.In the studio, a mix-minus feed can be fed to a singer on stage. The mix- minus consists of a prerecorded orchestra. The performers microphone signal and the mix-minus feed are combined in another mixer output for the final air or recorded feed. This method is used for reasons of economy and to simplify production. 2. In ENG operations, a mix-minus feed is used for the IFB. The mix-minus allows the talent to hear the program audio that includes the voices of other talents at other venues, but not the talent’s own voice. The effect is to allow more normal conversations, on air, among the performers. The bus feed refers to the mixer mix-minus feed available to one or more IFB program inputs.

Containing one source of audio although the source may be a summation of two or more original sources.

An audio speaker used to supply program audio to the control room, audio mixer, and to others who need an acoustic audio feed. Some special monitors are used for musicians to hear their own instrument or voice. Usually a monitor is placed in the Green Room.

Greek letter, mu, symbol for permeability (magnetic), amplification factor, prefix for micro (one- millionth).

A highly effective magnetic shielding material.

A method of carrying more than one signal on a single “path.” Multiplexing may be by means of frequency, time division, and / or space. The TW system frequency multiplexes DC power, speech signals, and a 20 kilohertz call signal on a single pair of wires. The Models 848A / DC848 use time multiplexing in a digital RS485 signal to send data for all 24 stations down a single path. Millivolt or one thousandth of a volt.

Milliwatt or one thousandth of a watt.

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