Shure VR230B Bedienungsanleitung

UNIDIRECTIONAL DYNAMIC HEAD-WORN MICROPHONE

222 HARTREY AVE EVANSTON, IL, 60202-3696

TELEX 72-4381

SOUND

PROFESSIONALS~

WORLDWIDE

PHONE 312/866-2200 CABLE SHUREMlCRO

MICROPHONES AND ELECTRONIC COMPONENTS

GENERAL

The VR230B combines an efficient "open-air" head-

phone with a wide-frequency-range, close-talking

dynamic microphone. The headset-microphone com-

bination is very lightweight and durable, and extremely

comfortable.

The VR230B microphone is particularly useful for

voice processing and computer voice recognition. Its

close-talking characteristics and unidirectional pickup

pattern reduce unwanted background noise, permitting

its use in noisy environments. The microphone

characteristics are tightly controlled resulting in con-

sistent response and output, while the receiver

response is especially tailored to enhance voice in-

telligibility.

The headband easily adjusts to fit any head size or

hairstyle, and the microphone boom length and car-

tridge position are fully adaptable to any facial

conformation. The VR230B's light weight reduces user

fatigue even when worn for long sessions.

DATA

SHEET

MODEL

VR230B

SPECIFICATIONS

MICROPHONE

Type

Dynamic, Close-Talking

TYPICAL MICROPHONE FREQUENCY RESPONSE

FIGURE

Frequency Response

(at 8 mm (5116 in.])

50 to 15,000

(see Figure 1)

Polar Pattern

Cardioid (unidirectional) response- uniformwith fre-

quency, symmetrical about axis (see Figure 2)

TYPICAL POLAR PATTERN

FIGURE

Impedance

Microphonerating impedance is 150ohms(200ohms

actual) for connection to microphone inputs rated at

19 to 300 ohms

Output Level

(close-talkedat 1,000 Hz)

...........

Open Circuit Voltage -47.0 dB(4.5 mV)

0 dB

1volt per 100 microbars

Power Level

..........................

66.0 dB

0 dB

1 milliwatt per 10 microbars

Hum Sensitivity

(typical)

38.4 dB equivalent SPL in millioersted field

Phasing

Positive pressure on diaphragm produces positive

voltage on red cable lead

RECEIVER

Type

Dynamic, open air, left side only

Frequency Response

100 to 10,000 Hz, tailored for voice intelligibility (see

Figure 3)

TYPICAL RECEIVER FREQUENCY RESPONSE

FIGURE

Inc.

27A2177

(EJ)

Printed in

U.S.A.

Impedance

ohms at 1,000

Phasing

Positive voltage on cable conductor produces

positive pressure

Output Level

(at 1,000 Hz)

94 dB SPL at ear with 1 mW input

RED SHIELD

CODED

_'-

TERMINAL

SHIELD

------

BLACK

CODED

TERMINAL

RECEIVER

INTERNAL CONNECTIONS

FIGURE

GENERAL

Cable

2.4m

ft) attached, two single-conductor shielded

cables

Headset

Stainless steel and thermoplastic with foam earpads

Dimensions

See Figure

12.7mmJ

(112

IN.)

OVERALL DIMENSIONS

FIGURE

Net Weight

90 grams (3.17 oz)

USING THE MICROPHONE

Snap the microphone boom into the rotating holder

below the left earpiece. Put on the headset and adjust

the earpads to the most comfortable position.

(Remember that this headset is designed only for use

with the microphoneonthe left side.) Slideand twist the

microphone boom, and rotate its holder, until the

microphone is located as close as possible to the left

corner of the mouth (not directly in front). See Figure 6

for optimum microphone position.

L:i:~

mare

-4

t13mm

(112

in.)''

less

LOCATE MICROPHONE AT CORNER OF MOUTH

FIGURE

GUARANTEE

This Shure product isguaranteed in normal use to be

free from electricaland mechanical defects for a period

of one year from date of purchase. Please retain proof

of purchase date. This guarantee includes all parts and

labor. This guarantee is in lieu of any and all other

guarantees or warranties, express or implied, and there

shall be no recovery for any consequential or incidental

damages.

SHIPPING INSTRUCTIONS

Carefully repackthe unit, have it insured, and returnit

prepaid to: Shure Brothers Incorporated

Attention: Service Department

222 Hartrey Avenue

Evanston, Illinois 60202-3696

If outside the United States, return the unit to your

dealer or Authorized Shure Service Center for repair.

The unit will be returned to you prepaid.

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