Shure MX692 Manual de usuario

Model MX692

User Guide

Printed in U.S.A.

27A8828 (Rev. 2)

SHURE MX692 WIRELESS BOUNDARY MICROPHONE TRANSMITTER

• Integrated functionality of Microflex

boundary microphone and UC Series

wireless transmitter

• Frequency agile transmitter offers

over 100 user selectable channels for

UA and UB frequency bands; run up

to 32 systems simultaneously

• User programmable touch-sensitive

switch and status LED

• 9V battery-powered with 3-stage

battery life LED indicator

• Thread mount cartridge connection

for easy field replacement

• Internal antenna

• Requires Shure UC4 receiver (sold

separately)

English – 1

TABLE OF CONTENTS: ENGLISH

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

MX692 Features and Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

MX692 Features and Controls Continued . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Checking and Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Adjusting the Transmitter Gain Level. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Changing the Transmitter Group/Channel Settings. . . . . . . . . . . . . . . . . . . . 6

Positioning the Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Positioning Multiple Microphones . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Positioning the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Removing the Grille . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Additional or Replacement Cartridges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

The Internal DIP Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Customizing Microphone Switch Functionality . . . . . . . . . . . . . . . . . . . . . . 13

Tips for Optimum Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Using the MX692 in Large Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

English – 2

INTRODUCTION

The MX692 wireless boundary microphone is for use in a variety of boardroom, education,

government, and house of worship applications that require a clean, cable-free installation. Ad-

ditionally, the MX692 is useful in retrofit installations where the modification of existing architec-

ture and furnishings is unwelcome, and in facilities where a flexible, mobile audio system is

required.

The user-programmable mute switch and interchangeable microphone cartridges allow cus-

tomization of microphone behavior and audio response to suit many applications. The transmit-

ter antenna is mounted internally, giving the microphone a sleek appearance.

The MX692 integrates a boundary microphone and a wireless transmitter. The transmitter

broadcasts on the UA (782.125–805.750 MHz) and UB (692.500–715.625 MHz) frequency

bands. These frequencies are legal for broadcast in the U.S., Canada, Central and South Amer-

ica, and Australia.

The Shure UC Wireless system divides frequency bands into “groups” and “channels.” Up to

sixteen individual MX692 transmitter/UC4 receiver pairs, each with its own channel, may be as-

signed to a single group. With two frequency bands to choose from, it is possible to run up to 32

microphones simultaneously in a single sound system.

English – 3

MX692 FEATURES AND CONTROLS

Microphone Status LED

Microphone is active when lit.

Programmable Touch-sensitive Switch

Touch to mute or activate microphone,

depending on logic settings.

Power/Battery Life Gauge

LED color indicates battery power status.

Power On/Off Switch

Protective Grille

Grille can be removed to access microphone

cartridge and DIP switches.

MICROFLEX

•

English – 4

MX692 FEATURES AND CONTROLS CONTINUED

To access gain and channel settings, open the battery compartment door.

Input Attenuation Control

This two position switch lets you select either 0 dB or

20 dB attenuation, depending on the volume of the

talker’s voice.

Transmitter Output Gain Control

Changes the audio level to accommodate various

input volumes. Use the supplied screwdriver to make

adjustments.

Channel Setting Control (green dial)

Rotating the Channel dial changes the Channel

setting. Use the supplied screwdriver to make

adjustments.

Group Setting Control (red dial)

Rotating the Group dial changes the Group setting.

Use the supplied screwdriver to make adjustments.

Battery Compartment

Holds one 9V battery

English – 5

CHECKING AND REPLACING THE BATTERY

To check the battery charge:

1. Turn the transmitter switch to on

2. Verify that one of the battery power LEDs is glowing (see page 3).

3. The amount of battery life remaining is indicated by which LED is lit, as shown in

the following table:

Replacing the battery:

For extended performance, use a 9V lithium battery. Rechargeable, carbon-zinc, and zinc-

chloride batteries are not recommended.

Transmitter LED Color Remaining Operating Time

Green 2 to 8 hours

Amber 45 minutes to 2 hours

Red 45 minutes or less

English – 6

ADJUSTING THE TRANSMITTER GAIN LEVEL

If transmitter gain

is set correctly, the

audio LED meter on

the UC4 receiver

should reach amber

during normal speech

and momentarily flash red during the loudest

speech. If transmitter output needs to be in-

creased or decreased, adjust the output gain

control.

Set the input attenuation control switch to 9

dB for normal use (default) or -20 dB for loud

voices (this is rare).

CHANGING THE TRANSMITTER GROUP/CHANNEL SETTINGS

For a wireless transmitter such as the MX692

to communicate with a receiver, the transmitter

and receiver must be communicating on the

same frequency. The frequency is set by chang-

ing the transmitter and receiver “group” and

“channel” settings. For a MX692 transmitter to

communicate with a UC4 receiver, the two must

have matching group and channel settings.

See the Shure website for recommended

group and channel settings for your area.

To change MX692 group and channel set-

tings:

1. Turn the transmitter off.

2. Using the supplied

screwdriver, rotate the

GROUP dial (see

page 4) until the desired

setting is reached. Then

rotate the CHANNEL dial until the desired

setting is reached.

-20 dB

English – 7

POSITIONING THE MICROPHONE

With the standard cardioid cartridge installed, the

MX692 will pick up audio at conversational volume levels

within 1.5 M (5 ft.) in a 130 degree range.

As a general rule, a single microphone should be

used for every two people speaking.

If a tighter pickup range is required, a supercardioid

cartridge may be used.

< 1.5M (5 FT.)

130°

English – 8

POSITIONING MULTIPLE MICROPHONES

In any installation, good vocal pickup can be

achieved by following the positioning rules on page

7. Maintain at least .3 m (1 ft.) separation between

transmitters. If you experience transmitter interfer-

ence, increase the distance between transmitters, or

change the channel of one transmitter/receiver pair.

For information on receiver setup and positioning,

see the UC4 Wireless System user guide.

English – 9

POSITIONING THE RECEIVER

The UC4 receiver may be rack mounted. See page 14 for information on systems with

multiple transmitters and receivers.

¹ Maximum distance depends on signal absorption, reflection, and interference.

MX692

>2 m (5 ft.)

<75 m (250 ft.) typical¹

UC4

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