Shure MX690 Manuel utilisateur

Wireless Boundary Microphone

The Shure MX690 microphone offers cable-free installation for

corporate boardrooms or other applications requiring exible

congurations. The MX690 operates within the 518–865 MHz

bands and is compatible with Shure SLX wireless systems.

27EN3240 (Rev. 3)

Model MX690

Printed in U.S.A.

Features

Sleek, low prole design•

Frequency agile, microprocessor controlled transmitter•

IR link to SLX receiver for automatic frequency •

synchronization

Programmable frequency Group/Channel display•

Programmable mute function•

Operates on two AA batteries•

Compatible with all Shure SLX Wireless systems•

Commshield™ technology for protection from RF interference•

Microphone Placement

Place the MX690 within 1.5 m (5 ft.) of a talker. Aim the

microphone toward the talkers and away from loudspeakers and

noise sources. Use one microphone for every two talkers. Pickup

angle with a cardioid cartridge is 130° at –3 dB.

Note: To minimize RF interference, maintain a distance of at

least 0.3 m (1 ft.) between transmitters. In case of interference,

increase the distance between transmitters or change channels.

Receiver

Make sure the receiver is within sight of the transmitter. Do not

place receiver behind a metal barrier or any reective surface.

Refer to the SLX Wireless System User Guide for more

information, or visit www.shure.com.

130º

30m (100ft)

The low-cut lter attenuates frequencies

below 150 Hz by 6 dB per octave.

Low-Cut Filter

Filter disabled (as supplied)

Low-cut lter

Battery

Installation

Open the battery compartment 1.

as shown.

Insert two1.5V “AA” batteries. 2.

Make sure the +/– terminals

are properly oriented.

Note: Alkaline batteries last up to

8 hours. Rechargeable, carbon-

zinc and zinc-chloride batteries

provide less operating time.

Power Meter

The battery meter on the

LCD shows remaining

battery life.

Low Power Indicator

Steady Red: Power

low. Replace batteries

immediately

Pulsing Red: Batteries

dead. Transmitter cannot be

turned on until batteries are

replaced.

Press and hold the1. ON/OFF PROGRAM button for

approximately 2 seconds. The LCD illuminates.

To turn the transmitter off, press and hold the2. ON/OFF

PROGRAM button again.

Note: Use the button on the bottom of the transmitter to power it

on without opening the battery compartment.

Power On/Off

Mute Button

The mute button can be congured for toggle or momentary

operation.

Toggle (as supplied)

The PUSH button toggles the microphone between active and

muted states.

NOTE: The microphone always powers up in the active state.

Momentary

There are two types of momentary operation:

Push-to-Mute: The microphone is muted only while the button is

pressed and held.

Push-to-Talk: The microphone is active only while the button is

pressed and held.

To change between toggle and momentary:

Hold the PUSH button and

press the SELECT button.

(Test the microphone to

conrm the change.)

To change between push-to-talk and push-to-mute:

Set the button for1.

momentary operation.

Hold the 2. SELECT button

and press the PUSH button.

Hold

Mute Indicator

The bi-color LED on the top of the microphone indicates whether

the microphone is active or muted.

The LED can also be set to ash when muted.

To toggle between off and ashing, press PUSH and ON/OFF

PROGRAM simultaneously.

Display Mode Status Indicator

Steady

(as supplied)

Active = Green

Muted = Red

Flashing Active = Green

Muted = Flashing Green

Locking Settings

Press ON/OFF PROGRAM and

SELECT simultaneously to lock

or unlock transmitter settings.

When locked, the current

settings cannot be manually

changed.

Note: Locking the transmitter

settings does not disable IR

frequency synchronization or

the High Pass/Low Cut lter.

To use with a logic enabled

receiver, you must perform

an automatic sync. The LCD

ashes “log” during sync. Once

in logic mode, the LCD ashes

“log” when powered up.

LOGIC MODE

Power off all transmitters.1.

Power on all receivers.2.

Begin with the rst transmitter. Open the battery cover and 3.

power it on.

Aim the IR sensor at the rst receiver IR port. The transmitter 4.

should be no more than 15 cm (6 in.) from the receiver. Press

and hold the receiver SYNC button to send group and channel

data to the transmitter. The red LED on the transmitter will stop

ashing when programming is complete.

Power off the rst transmitter and repeat the synchronization 5.

with each additional transmitter and receiver pair.

Press and hold the transmitter1. SELECT button until the desired

group number appears.

Press2. SELECT again and release it when the desired channel

number appears.

Automatic Frequency Synchronization

Manual Frequency Synchronization

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