Wisycom MTB40SUSX User Manual
MTB40S User Manual
Wideband Plug-on
Transmitter
SN: ________________
Rev.04 (rif. FW 1.30.0A)
Date: 19 March 2015
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INTRODUCTION
MTB40S is an extremely small and light plug-on transmitter designed for professional audio
applications.
Very easy and quick to use thanks to OLED display, MTB40S benefit also of the latest Wisycom RF
technology along with an enhanced robustness against noise and inter-modulation.
FEATURES
Up to 232 MHz bandwidth in 470/798 MHz range
Enhanced robustness against self-interferences and antenna performances thru a
proprietary “intermodulation cancellation” circuit
Miniature design with flexible pcb (no connectors) for extended reliability
User selectable compander systems: - ENR designed for maximum noise reduction
- ENC designed for maximum audio fidelity
Input dynamic extension with an integrated HW limiter (30 dB above peak)
P48 phantom power for condenser microphones
New white OLED display (128 x 32 pixels)
New XLR-3F connector with locking collar to ensuring an extremely tight noiseless fit!
Infrared interface for management and firmware update
Audio input circuitry with high linearity audio transformer
Battery: 2 AA Alkaline, rechargeable NiMH or Lithium
SAFETY INSTRUCTION
Read this safety instruction and the manual first
Follow all instructions and information.
Do not lose this manual.
Do not use this apparatus under the rain or near the water.
Do not install the apparatus near heaters or in hot environments, do not use outside the
operating temperature range.
Do not open the apparatus, only qualified service technician are enabled to operate on it. The
apparatus needs servicing when it is not properly working or is damaged by liquids, moisture or
other objects are fallen in the apparatus.
Use only accessories or replacement parts authorized or specified by the manufacturer.
Clean the apparatus only with dry cloths, do not use liquids.
Report the serial number and the purchasing date in front of the manual. It is needed to have
proper replacement parts or accessories from the manufacturer.
When replacement parts are needed, use only replacement parts authorized from the
manufacturer. Substitution with not authorized parts could result in electric shock, hazards or
fire.
Keep attention on all the labels with warnings or hazards on the apparatus.
Wisycom declines all responsibility for damages to things or people caused by not following the
instructions contained in this document
MTB40S transmitter is intended for use as plug on transmitter. In case of usage near human
body the user shall respect the minimum distance of 50 mm between user and the plug-on with
MTB40S while operating in order to ensure a safe exposure to RF energy.
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❶
Shotgun Microphone input, XLR-3F socket (balanced)
❷
OLED display
❸
OFF button
❹
ON/SEL button
❺
DOWN button
❻
UP button
❼
LED indicator
❽
CH/GAIN button
❾
Battery compartment cover
❷
❶
❸ ❹ ❺
❻
❼ ❽ ❾
LED INDICATION
The front led is a RGB indicator (red, green, blue) which shows the following status of the
transmitter:
- Wireless transmission status: green when RF transmission power is on (on power on the
device, this LED is red and become green when the RF transmission power is on).
- Battery status: green steady, slowly blinking (< 25%), quickly blinking (<12%).
- Modulation peek (if activated): red.
- Limiter in action (if activated): blue.
BATTERIES
MTB40S is working with 2 AA alkaline, NiMH or Lithium batteries (select correct type on setup
controls). Battery status can be checked on internal OLED display or looking to LED status on front.
BATTERY SUBSTITUTION
Open transmitter cover and insert batteries.
Attention: always replace both the batteries
OPERATING CONTROL
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Buttons
Mode
To…
OFF
Status display
- power off the device
- power off the RF transmission
- exit from the operating menu
Operating menu
Cancel the entry and return to the standard
display
Setting mode
ON/SEL
Device off
- power on the device
- power on the RF transmission
Status display
- enter on the operating menu
Setting mode
- store the setting a parameter in the menu
POWER UP/DOWN
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Preset parameters
DISPLAY MENU
Setup menu are accessed in sequence:
MENU
STATUS
PRESET
TUNING
AUDIO
RF/BATTERY
RF On/Lock
LED
MIC
NAME
INFO
IRDA
Lock
Current
Load FACTORY/USER/PRESET1/2/3/4/5/6/7/8
Save USER
CH
GR
Freq
AF Gain
AF Level
Phase 0 ÷ 180
HP Filt. flat/60/80/120/170/250/400Hz
Nois R.
Limiter On/Off
RF Power 10 / 50 mW
Battery
RF Out On/Off
Autolock On/Off
Led Light 00 ÷ 16
Led Mode None / ModePeak
Phantom (48V) On/Off
Data (TSQ) On/Off
00 ÷ 59
00 ÷ 39
1: 470.000 ÷ 640.000
2: 566.000 ÷ 798.000
3: 510.000 ÷ 698.000
-60 ÷ +40 dB (1dB step)
-54 ÷ +46 dBu (1dBu step)
ENR-Wisy / ENC-Wisy
Alkaline/NiMH/Lithium
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This menu gives indication on product:
- product id (MTB40S),
- the firmware release (i.e. 1.30.0A),
- the band in extended format and
- the serial number.
Keep selector pushed to hold this menu!
Major info are displayed:
- Current channel/group or the receiver name if the MTB40S is
already synchronized with a receiver
- Current frequency (i.e. 520.000 MHz)
- Gain (i.e. AF: -12 dB) and high pass filter (i.e. HP: 120 Hz)
- “RF 10”, “RF 50” or “RF off” on top right if RF transmission is
ON (“RF 10” if the RF power is set to 10mW or “RF 50” if the
RF power is set to 50mW) or OFF
- Batteries charger (a bar with 7 level)
MTB40S can recall configuration presets.
“FACTORY” recalls the Wisycom factory configuration.
“USER” recalls the user configuration (the transmitter configuration
is copied into the USER using the “save to” submenu).
All “USER” menus are not locked by default, thus this is quick way
to unlock features!
When the user changes some parameters from the PRESET
configuration (for less than frequency) a star appears on the topright corner until a save command is executed.
The other 8 configuration presets are user programmable thru the infrared and the PC interface
(using the programmer UPK 300/UPK
Mini
or the receiver MRK950/MRK960).
We provide the device with some preset configurations specifically designed for certain types of
microphone or applications (it’s possible to change these presets in any time using the TX
manager).
All parameters can be “left unchanged”, “changed” or “changed and lock”, allowing a very flexible
way to pre-program MTB40S configuration.
Using < > selector all menus can be accessed in sequence, push <ON/SEL> to enter edit mode:
- < > to setup field
- <ON/SEL> again to confirm changes and exit.
Exit without confirmation if:
-no button is pressed after a few seconds (4sec) time out or
-OFF button is pressed
<START UP> menu
These menu are displayed during power up for few seconds.
<STATUS> menu
This is the first menu displayed after power up.
<PRESET> menu
This menu can be entered by pushing .
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In this menu channel/group and frequencies can be setup.
The name of the group is shown on the top right of the display.
SYNC group is a quick self-settable channel synchronized by
receiver (with SYNC group, on the top right of the display is
shown the name of the synchronized receiver).
Use the selector ( ) to change values and <SEL> to confirm.
Using quick channel setup buttons (<CH>), it is possible to enter
quickly in the tuning menu. Note that the menu has a different
layout (see the side image)
The sensitivity of the audio input is settable between “AF Gain”
(measured in dB) or “AF Level” (measured in dBu).
To help proper audio gain setting, an audio bar is supplied (with
maximum peak indicator) indicating the headroom to audio
peak (0 dB , nominal deviation 40KHz). Set the gain, with the
maximum input signal, avoiding the peak on the audio bar.
TRY TO SETUP TO HAVE A MAX PEAK HOLD BAR CLOSE TO -6dB.
Using quick gain setup buttons (<GAIN>), it is possible to enter
quickly in the audio gain menu. Note that the menu has a
different layout (see the side image)
The second <AUDIO> menu allows to set:
- audio phase (0° or 180°)
- High Pass Filter: applies different audio HP filter: Flat/ 60Hz/
80Hz/ 120Hz/ 170Hz/ 250Hz/ 400Hz.
The third <AUDIO> menu allows to set the noise reduction and
setup the limiter:
- MTB40S supports 2 different type of “Companding systems”:
ENR-Wisy: designed for maximum noise reduction;
ENC-Wisy: designed for maximum audio fidelity (use this in
case of special vocal application or to remote
instruments).
- Limiter: if is set “On”, an input audio signal above the peak
threshold (up to 30 dB above peak) is not cut but attenuate,
without lost quality. The limiter acts as a variable attenuator
(thanks to the feedback system), maintaining a distortion
<3%. When the limiter intervenes, the front led turns blue.
If this parameter is set “Off”, the limiter is disable.
<TUNING> menu
This menu can be entered by pushing .
<AUDIO> menu
In the AUDIO menu are shown all the audio parameters (this menu can be entered by pushing ).
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