Williams Sound MOD 112 Installationsanleitung PDF herunterladen (Seite 13)

Williams Sound

Helping People Hear



MOD 112 Rear Panel

Input 1 and Input 2

The two main inputs to the modulator accept any

low impedance microphone or line level signal. The

input circuit is constructed with a “studio grade” dif-

ferential amplifier, providing better performance

than that which is available with a transformer while

still being fully protected from RFI/EMI.

Microphone

Any dynamic, ribbon or condenser microphone

equipped with a balanced output and a 3 pin XLR

connector can be used. Power is supplied for con-

denser microphones according to DIN 45596. It

need not be turned off for dynamic or ribbon mics.

Microphones with two conductor 1/4 inch plugs are

not usable.

The minimum acceptable level is approximately 100

µV, and the maximum level before clipping is

approximately 90 mV.

Line

Both balanced and unbalanced line level signals can

be accommodated.

The minimum acceptable level is

approximately 100 mV

, and the maximum level

before clipping is approximately 10

25 V, 70 V, and 100 V speaker distribution lines can

be connected to the Line input using attenuators

made with resistors or with speaker matching trans

formers. Resistor attenuators yield better results. The

minimum acceptable level is approximately 100 mV,

and the maximum level before clipping is approxi-

mately 10 V.

Accessory Connector

Outputs are available directly from several points in

the internal circuitry of the modulator

They are

from the output of the differential amplifiers for the

main inputs and from the output of the audio pro-

cessing circuits.

The outputs are isolated from inter

nal circuits and may be used as the installer requires.

Model WIR MOD112 Two-Channel Infrared System Modulator

Accessory

Power: 24 VAC, 

50-60 Hz, 10VA

Williams Sound Corp., Minneapolis, MN USA

Balanced 

Mic (XLR)

al or Unbal 

ine (1/4")

Ch 1 Audio Input Ch 2 Audio Input

Baseband 

utput

Baseband 

nput

50 Ohms 50 Ohms

Figure 9: MOD 112 Modulator Rear Panel

Input 1 and Input 2

These main inputs to the modulator accept any low

impedance microphone or line level signal.

Accessory Connector

Outputs are available directly from several points

in the internal circuitry of the modulator.

aseband Output

Carriers tones of 95 kHz and 250 kHz are provided at this

BNC connector. One 50 Ω device may be connected here using

RG-58 cable. Additional devices may also be connected in series.

Baseband Input

An additional modulator may be connected here to

allow combining carriers for more channels.

The input impedance is 50 Ω.

Power In

21 VAC to 26 VAC only, 50 or 60 Hz.

(TFP 016 Power Supply)

Current consumption is approximately 130 mA.

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