Avsl CSM660 설치 및 운영 지침 - 페이지 3

{카테고리_이름} Avsl CSM660에 대한 설치 및 운영 지침을 온라인으로 검색하거나 PDF를 다운로드하세요. Avsl CSM660 3 페이지. Desktop paging microphone

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As you can see from the circuit diagram, the microphones' capsule is short-circuited by one half of the push-

to-talk switch. This means that the output wires (White & Red) are a short-circuit when the PTT switch is not

pressed, thus preventing any signal at all reaching the amplifier.

When the PTT switch is pressed, this short-circuit is removed, and the audio from the microphone capsule is

fed into the amplifiers' input. At the same time, the second half of the PTT switch places a short-circuit

across the Blue & Black wires and these may be used to trigger an external action e.g. the "Chime" in a local

device, such as the AVU2002 pre-amplifier/line driver.

IMPORTANT SAFETY NOTICE :-

For safety reasons, the shield (or screen) of the microphone cable must be earthed at the equipment end.

Most equipment with microphone inputs has its' chassis at earth potential, but some (typically low-voltage

supplied devices) may not. It is the installers' responsibility to ensure that the microphone is

adequately earthed!

MODEL

TYPE

Polar Pattern

Impedance

Sensitivity

Frequency Response

Connection Cable

Cable Length

Terminal Connector

Weight *

Dimensions

Talk Switch

Remote Switch

Finish

* Weight given in the above table does not include the connection cable or plug.

DOCUMENT NUMBER AVS/CSM660/OEM/01

TECHNICAL SPECIFICATIONS

CSM660B

Moving Coil Microphone

Unidirectional

600 Ohms, Balanced

-58db @1 KHz (0db = 1V Pa)

100Hz-10KHz

2 core shielded + 2 core cable

2.5m (8 ft 2 ins)

5 Pin DIN Plug

440 g (0.97 lb)

100 (W) X 215 (H) X 150 (D) mm (3.9 X 8.5 X 5.9 Ins)

Push-to-Talk (Short off circuit, with locking lever)

Leaf Spring Contact (Interlocked with Talk Switch)

HEAD : Zinc Plated Steel Wire, Baked Paint (Grey)

BODY : ABS Resin (Grey)

REV 2.0

November 2005

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