LECTROSONICS M2R-X Instruction Manual
M2R-X*
Digital IEM Receiver with Encryption
* M2R-X is a firmware option for the
M2R allowing encryption and removing
the flexlist feature and analog IFB capability.
INSTRUCTION MANUAL
Quick Start Summary
1) Install receiver batteries (pg. 6).
2) Power unit on with On/Off and Volume knob (pg. 4).
3) Scan for an available frequency (pg.9).
4) Sync the receiver with a transmitter (pg. 10).
5) Enable RF in transmitter (see transmitter manual).
6) Send audio (pg. 9).
Fill in for your records:
Serial Number:
Purchase Date:
Rio Rancho, NM, USA
www.lectrosonics.com
M2R-X
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LECTROSONICS, INC.
Table of Contents
Quick Start Summary ......................................................... 1
M2R Digital IEM Receiver ..................................................4
Encryption ..........................................................................4
Smart Tuning (SmartTune
RF Front-End with Tracking Filter .......................................4
Panels and Features ............................................................5
Battery Status LED ............................................................6
RF Link LED .......................................................................6
On/Off and Volume Knob ...................................................6
IR (infrared) Port ................................................................6
USB Port ............................................................................6
Battery Compartment.........................................................6
Keypad and LCD Interface .................................................6
Installing Batteries ..............................................................7
LCD Main Window .............................................................7
Navigating the Menus .........................................................8
M2R-X LCD Menu Map ........................................................9
System Setup Procedure ....................................................10
Menu Item Descriptions ......................................................11
SmartTune .........................................................................11
Scan ...................................................................................11
Frequency ..........................................................................12
Vol/Bal ................................................................................12
Mixer .................................................................................12
Limiter ................................................................................12
HF Boost ............................................................................12
Meter Mode ........................................................................12
Clear Scan Data .................................................................13
Backlight ............................................................................13
LEDs Off ............................................................................13
Battery Type .......................................................................13
Earphone Type ...................................................................13
Vol. Taper ...........................................................................13
Lock/Unlock .....................................................................13
Locale ...............................................................................13
About M2R-X .....................................................................13
Default ................................................................................14
Encryption Key Management .............................................14
Key Type .............................................................................14
Wipe Key ............................................................................14
Share Key ..........................................................................14
Accessories .........................................................................15
Specifications ......................................................................15
Wireless Designer Software ..............................................16
Firmware Update Instructions ............................................16
Service and Repair ..............................................................18
Returning Units for Repair .................................................18
™
) ...............................................4
Digital IEM Receiver with Encryption
WARNING: If connecting this receiver to
microphone inputs, such as in a camera hop
arrangement, 48 V phantom power MUST be
turned off. Otherwise, damage to the receiver
will occur.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference
in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, my cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does
cause harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Rio Rancho, NM
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M2R-X
M2R Digital IEM Receiver
The M2R Digital IEM Receiver is a compact, rugged
body-worn unit providing studio-grade sound quality
for performers or any professionals needing to monitor
detailed audio wirelessly. The M2R employs advanced
antenna diversity switching during digital packet
headers for seamless audio. The receiver uses digital
modulation and covers UHF frequencies from 470.100
to 614.375 MHz.
NOTE: Some regions have certain frequency restrictions.
Depending on LOCALE selection, the SmartTune and Scan
frequency ranges are:
NA: 470.100 - 614.375 MHz
EU: 470.100 - 614.375 MHz
AU: 520.000 - 614.375 MHz
The headphone jack is fed from a high-quality stereo
amplifier with 250 mW available to drive even inefficient headphones or earphones to sufficient levels for
stage performance or other noisy environments. The
receiver can select from stereo, mono from left or right
channels only, or mono from both channels, giving
the unit flexibility in terms of application as an IEM or
IFB receiver. An intuitive interface and high resolution,
color LCD on the unit provide performing artists and
audio professionals alike with a comfortable and confident user experience.
The M2R also employs 2-way IR sync, so can data
from the receiver can be sent to a transmitter and
thus onto Wireless Designer™ Software, via USB or
Ethernet. This way, frequency planning and coordination can be done quickly and confidently with on-site
RF information.
Encryption
The special firmware version M2R-X provides AES
256 bit encryption. When transmitting audio, there are
situations where privacy is essential, such as during
professional sporting events, in court rooms or private
meetings. Truly entropic encryption keys are first created by the M2T-X Transmitter. The key is then synced
with the M2R-X via the IR port. The audio will be encrypted and can only be decoded and heard if both the
transmitter and the receiver have a the matching key.
RF Front-End with Tracking Filter
A wide tuning range is helpful in finding clear frequencies for operation, however, it also allows a greater
range of interfering frequencies to enter the receiver.
The UHF frequency band, where almost all wireless
microphone systems operate, is heavily populated by
high power TV transmissions. The TV signals are immensely more powerful than a wireless microphone or
IEM transmitter signal and will enter the receiver even
when they are on significantly different frequencies
than the wireless system. This powerful energy appears as noise to the receiver, and has the same effect
as the noise that occurs with extreme operating range
of the wireless system (noise bursts and dropouts). To
alleviate this interference, front-end filters are needed
in the receiver to suppress RF energy below and
above the operating frequency.
The M2R receiver employs a selective frequency,
tracking filter in the front-end section (the first circuit
stage following the antenna). As the operating frequency is changed, the filters re-tune into six different
“zones” depending on the selected carrier frequency.
BLOCK
470 MHz
BLOCK
BLOCK
In the front-end circuitry, a tuned filter is followed by
an amplifier and then another filter to provide the selectivity needed to suppress interference, yet provide a
wide tuning range and retain the sensitivity needed for
extended operating range.
BLOCK
BLOCK
BLOCK
614 MHz
NOTE: Unencrypted firmware versions of the
Duet system will not interact with encrypted
sysem components. Components in a system
must either have all 2.x (unencrypted) firmware
installed, or have all 3.x (encrypted) firmware
installed in order to interoperate.
Smart Tuning (SmartTune™)
A major problem facing wireless users is finding clear
operating frequencies, especially in RF saturated environments. SmartTune™ overcomes this problem by
automatically scanning all the frequencies available in
the receiver’s frequency block and tuning the receiver
to the frequency with the lowest RF interference, significantly reducing setup time.
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LECTROSONICS, INC.
Panels and Features
On/Off and
volume knob
Digital IEM Receiver with Encryption
RF Link LED
IR (infrared)
port
Headphone
output
Battery status
LED
When on Main Screen, UP Button will turn LEDs on
and DOWN Button will turn LEDs off.
Belt clip
mounting
sockets
USB
port
Battery compartment
door
Rio Rancho, NM
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M2R-X
Battery Status LED
When the battery status LED on the keypad glows
green the batteries are good. The color changes to red
at a midpoint during the runtime. When the LED begins
to blink red, only a few minutes remain.
The exact point at which the LED turns red will vary
with battery brand and condition, temperature and
power consumption. The LED is intended to simply
catch your attention, not to be an exact indicator of
remaining time.
A weak battery will sometimes cause the LED to glow
green immediately after the transmitter is turned on,
but it will soon discharge to the point where the LED
will turn red or the unit will turn off completely.
RF Link LED
When a valid RF signal from a transmitter is received,
this LED will light up blue.
On/Off and Volume Knob
Turns unit on or off and controls headphone audio
level.
IR (infrared) Port
Settings, including frequency, encryption keys, name,
limiter, mix mode, etc. can be transferred between
transmitter and receiver. Frequency scan information
can be sent from the receiver to the transmitter and on
to Wireless Designer software for coordination purposes.
Keypad and LCD Interface
MENU/SEL Button
Pressing this button enters the menu and selects
menu items to enter the setup screens.
BACK Button
Pressing this button returns to the previous menu or
screen.
Arrow Buttons
Used to navigate the menus. When on Main Screen,
UP Button will turn LEDs on and DOWN Button will
turn LEDs off.
Headphone Output
A recessed, high duty cycle 3.5 mm stereo jack is provided for standard headphones and earphones.
WARNING: If connecting this receiver to
microphone inputs, such as in a camera hop
arrangement, 48 V phantom power MUST be
turned off. Otherwise, damage to the receiver
will occur.
If using a mono earphone with this unit, you
must select “Mono” under “Earphone Type”
in the menu. Otherwise, the unit will use
batteries very quickly and get hot.
USB Port
Firmware updates via Wireless Designer are made
easy with the USB port on the side panel.
Battery Compartment
Two AA batteries are installed as marked on the rear
panel of the receiver. The battery door is hinged and
remains attached to the housing.
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LECTROSONICS, INC.
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