Telex 38109-977 manual NAB Nabet NEC Nema

N

NAB

NABET

NEC

NEMA

Nibble

Noise

National Association of Broadcasters.

National Association of Broadcast Employees and Technicians. National Electrical Code

National Electrical Manufacturers Association A nibble is half a byte or four bits.

Usually an unwanted sound or signal that interferes with a sound or signal normally present in a system, device, or circuit. Sometimes a special noise source such as a pink noise source or a white noise source is used to test a system or acoustically test a room.

O

Ohm

Ohm’s Law

Omega (Ω)

Omnidirectional Microphone

Option

Output

The electrical unit of resistance. One volt will maintain one ampere of current through one ohm. This law relates the electrical parameters of voltage, current, and resistance. The symbol for voltage is V*, current is I, and resistance is R. Voltage, V=I*R. Current, I=V/R. Resistance, R=V/I. *An older symbol or term for voltage is E. E is also the symbol for the Electric field, which has units of volts per meter.

Symbol for ohm.

A microphone that picks up sound from all directions with the same amplitude.

Options are extra features available (for a price) on intercom and pro-audio equipment. The useful signal (voltage, current, power) produced by a system, device, or circuit.

P

Paging

Parallel Circuit or Connection

Party-Line (PL)

Patch Bay / Patchboard

Making a voice announcement over a sound system. The sound system is “P.A.” in the sound contractor world, and “SA”, Stage Announce, in the television / theater world.

In a circuit, the paralleled elements would be across the same voltage and the currents would divide amongst the elements. This kind of connection can apply to circuits, devices, or systems. For example: two RTS™ Systems TW Intercom Systems can be paralleled, by coupling with the appropriate capacitors, and switching each system power supply(ies) from 200 ohms to 400 ohms on the channels to be paralleled.

A Party-Line (also called a conference line) is a group of intercom ports which can always talk and/or listen to each other. Party-Lines have default names PL01, PL02 etc. These names can be changed to more meaningful names using Other Alpha setup in AZ™EDIT. Members are assigned to a Party-Line using Party-Line setup in AZ™EDIT. Once a Party-Line has been set up, it can also be assigned to a keypanel key either from the configuration software or at a programmable keypanel. This allows the keypanel operator to talk and/or listen to the Party-Line without being a member. IMPORTANT: Do not confuse special lists and Party-Lines. A special list is used when a keypanel operator needs to occasionally talk or listen to a group of intercom ports that are otherwise unrelated. A Party-Line is typically used when several users of non- keypanel devices (such as belt packs or camera intercoms) are engaged in a specific common activity and they need to talk and/or listen to each other all the time. Keypanels are almost never members of Party-Lines (although they can be). However, a keypanel key can be assigned to occasionally talk or listen to a Party-Line if desired. Just remember: Party-Lines are primarily set up for Party-Line members, with occasional access by keypanel operators, while special lists are set up exclusively for keypanel operators to talk or listen to several unrelated intercom poRTS™.For specific information about Party-Line setup, search for “PL” or “Party-Line” in AZ™EDIT help.

A system of interconnecting audio signals. Consists of fixed connectors interconnected with flexible “patch” cords that are cords usually with a male connector on each end.

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