Shure MX690 User manual

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.
©2008 Shure Incorporated
27EN3240 (Rev. 3)
Model MX690
Printed in U.S.A.

2
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•

3
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)

4
The low-cut lter attenuates frequencies
below 150 Hz by 6 dB per octave.
Low-Cut Filter
Filter disabled (as supplied)
Low-cut lter

5
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.

6
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

7
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
Hold

8
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
+

9
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

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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

11
Troubleshooting
If you encounter difculty with the SLX Wireless System:
Make sure both the transmitter and the receiver are turned on.•
Replace the battery if the battery LED is red.•
Make sure the Group/Channel settings for each transmitter-•
receiver pair are identical.
Make sure there is an unobstructed line of sight between the •
transmitter and receiver.
If necessary, reposition the receiver or decrease the distance •
between transmitter and receiver.
Remove local sources of RF interference, such as computers•
or lighting equipment.
Remove metal objects within 0.3 m (1 ft.) of the transmitter•
Note: Refer to the SLX Wireless System User Guide for
complete troubleshooting procedures.
Tips for Optimum Performance
Maintain a direct line of sight between the transmitter and •
receiver antennas.
Avoid placing the transmitter on metal surfaces.•
Avoid placing laptop computers or other obstructions in front •
of the microphone during use.
Only use with a Shure SLX4 wireless receiver.•

12
Frequency Selection
Shure offers wireless systems in a selection of bands that
conform to the different government regulations of specic
nations or geographic regions. These regulations help limit radio
frequency (RF) interference among different wireless devices and
prevent interference with local public communications channels,
such as television and emergency broadcasts.
The system’s band and frequency range are identied on the
receiver and transmitter. For example, “H4 518-578 MHz.”
For information on bands available in your area, consult your
local dealer or phone Shure. More information is also available at
Shure’s website (www.shure.com).
Licensing of Shure wireless microphone equipment is the
user’s responsibility, and licensability depends on the user’s
classication and application, and on the selected frequency.
Shure strongly urges the user to contact the appropriate
telecommunications authority concerning proper licensing, and
before choosing and ordering frequencies.
Changes or modications not expressly approved by Shure
Incorporated could void your authority to operate this equipment.
Licensing

13
Frequency Bands
Band Range Output
H5 518–542 MHz 10 mW
J3 572–596 MHz 28 mW
L4 638–662 MHz 10 mW
P4 702–726 MHz 10 mW
R13 794–806 MHz 10 mW
R5 800–820 MHz 10 mW
S6 838–865 MHz 10 mW
JB 806–810 MHz 10 mW
Q4 740–752 MHz 10 mW
G4 470–494 MHz 10 mW
G5 494–518 MHz 10 mW
Note: This radio apparatus may be capable of operating on some
frequencies not authorized in your region. Please contact your
national authority to obtain information on authorized frequencies
for wireless microphone products in your region.

14
The Master List is an index of all frequencies in a band, including
those not assigned to a Group or Channel. The Master List can
only be accessed through the receiver, so the transmitter must
be synchronized via the IR port. When a Master List frequency is
in use, “MASTER LIST” appears on the display. Refer to the SLX
Wireless System User Guide for more information.
Note: Wireless devices such as cellular phones and two-way
radios may interfere with wireless microphones. Keep these and
other potential sources of interference away from the transmitters
and receivers.
Master List Frequencies

15
Transmitter Specications
Operating Range
30 m (100 ft.)
Note: Actual range depends on RF signal absorption,
reection, and interference
Frequency Stability
±10 ppm
Maximum Frequency Deviation
45 kHz
Oscillator Type
Phase-locked loop (PLL) controlled synthesizer
Power Requirements
3V (2 AA alkaline or rechargeable batteries)
Battery Life
≥8 hours (alkaline)
Power Consumption
130 mA, ±15 mA
Operating Temperature Range
-18–57 °C (0–135 °F)
Note: Battery may limit this range
Dimensions
43 mmH x 87 mmW x 148 mmD (1 11/16 x 3 3/8 x 5 13/16 in.)
Weight
Net: 318 g (11.2 oz)
Packaged: 516 g (18.2 oz)

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Microphone Specications
Type
Condenser (electret bias)
Frequency Response
50–17000 Hz
Polar Pattern (at 1 kHz)
Cardioid
Sensitivity (at 1 kHz , open circuit voltage)
–33 dBV/Pa (22 mV)
1 Pascal=94 dB SPL
Dynamic Range (1 kΩ load at 1 kHz)
96 dB
Common Mode Rejection (10 Hz to 100 kHz)
45 dB minimum
Preamplier Output Clipping Level (1% THD)
–6 dBV (0.5 V)
Polarity
Positive sound pressure on diaphragm produces positive
voltage on pin 2 relative to pin 3 of output XLR connector or tip
of 1/4” phone plug.

17

18
Certied to FCC Part 74 (FCC ID: DD4MX690).
Certied by IC in Canada under RSS-123 and RSS-102 (IC:
616A-MX690).
Meets essential requirements of the European R&TTE Directive
99/5/EC (ETSI EN 300-422 Parts 1 & 2, EN 301 489 Parts 1 & 9)
and eligible to carry the CE marking.
Changes or modications not expressly approved by Shure
Incorporated could void your authority to operate this equipment.
Certication

19
EU Declaration of Conformity
EU DECLARATION OF CONFORMITY
We, Shure Incorporated
of 5800 Touhy Avenue
Niles, Illinois, 60714-4608 U.S.A.
Phone: [phone]
Web: www.Shure.com
Declare under our sole responsibility that the following product
Model: MX690 Description: Wireless Microphone Transmitter
conforms to the essential requirements and other relevant previsions of the R&TTE
Directive (1999/5/EC).
The product complies with the following product family, harmonized or national
standards:
EN 301 489-1 V1.4.1 (2002-08)
EN 301 489-9 V1.2.1 (2002-08)
EN 300 422-1 V1.2.2 (2000-08)
EN 300 422-2 V1.1.1 (2000-08)
The technical documentation is kept at:
Shure Incorporated, Corporate Quality Engineering Division
SHURE Europe GmbH, EMEA Approval
Manufacturer: Shure Incorporated
Signed: __________________________________ Date: 20 December 2006
Name and Title: Craig Kozokar, EMC Project Engineer, Corporate Quality Engineering
Division
European Representative: SHURE Europe GmbH
Signed: __________________________________ Date: 20 December 2006
Name and Title: Wolfgang Bilz, Dipl. Ing. (FH), EMEA Approval
SHURE Europe GmbH
Headquarters Europe, Middle East & Africa
Wannenäcker Str. 28
D-74078 Heilbronn, Germany
Phone: +49 - (0)7131 - 7214 - 0
Fax: +49 - (0)7131 - 7214 - 14

SHURE Incorporated http://www.shure.com
United States, Canada, Latin America, Caribbean:
5800 W. Touhy Avenue, Niles, IL 60714-4608, U.S.A.
Phone: [phone] U.S. Fax: [phone] Int’l Fax: [phone]
Europe, Middle East, Africa:
Shure Europe GmbH, Phone: [phone] Fax: [phone]
Asia, Pacific:
Shure Asia Limited, Phone: [phone] Fax: [phone]