WisyCom MTP51-JP User manual

MTP51-JP User Manual
Wireless
Professional Pocket
Transmitter
Rev.02 (ref. FW 1.4.0.J)
Date: 20 November 2020

MTP51-JP User Manual
2
INTRODUCTION
“MTP51-JP is an extremely small and light pocket transmitter especially designed for professional
wireless microphone applications”
Very easy and quick to use thanks to OLED display, dedicated buttons and a joggle selector.
MTP51-JP benefits also of the latest Wisycom RF technology along with an enhanced robustness
against noise and inter-modulation.
Fig. 1
1.
Fig. 2
❶
Switch to enable wireless transmission it
also indicates the battery status and
peak/mute operation (with PTT)
❷
LED to show information on RF
transmission/battery status/modulation
peek/PTT status
❸
Oled display for transmitter setup
❹
<ch>, <gain> and 3 positions <selector>
❺
Battery holder
❻
Cover (to open push side buttons)
Turn on wireless:
Move the Wireless power switch in
“I” position:
A green blinking gives you
indications on battery status.
1
Open MIC Body:
Push the side buttons and flip down the cover, to access
internal setup controls and batteries.
Turn on display:
Push <select switch> and hold it.
❻
❸
❺
❷
❶
❹

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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.
LED INDICATIONS
Led indication with LED RGB (red, green, blue) in front led (❷):
- 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 and the limiter is disabled): red.
- Ptt status: red if active (push to talk “pushed”).
- Limiter in action (if activated): blue.
BATTERIES
MTP51-JP is working with 1 AA alkaline or NiMH or Lithium batteries (select correct type on setup
controls). Battery status can be checked on internal OLED display or looking the LED status on front
❷.
BATTERY SUBSTITUTION
Open transmitter cover and insert the battery following polarity indicated.

MTP51-JP User Manual
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POWERING UP
Move the wireless power switch (see Fig. 1) in “I” position to activate wireless transmission: the
front LED ❷lights up red and then green when the RF transmission power is on (blinking when
battery is low!)
SETUP CONTROL
Open transmitter Body to access the “display and controls” area (Fig. 3):
❶Graphics Display (OLED)
❷Channel selection buttons (ch)
❸MIC gain setup buttons (gain)
❹3 position selector (up / down / click)
Fig. 3
OLED Power UP (OLED IS IN OFF CONDITION)
Pushing down selector (click), oled turns on. A first menu with Serial Number and brand logo is
displayed, then <status> menu enters automatically.
Turn on the transmitter pushing and holding selector (click) > 2 sec, Serial Number menu is displayed
till (-/+) is selected.
OLED Power DOWN (OLED IS IN ON CONDITION)
Pushing and holding selector (click) > 2 sec, display is turned off.
Display turns off automatically after 15 sec, unless in <AUDIO> menu (with audio level < 5% from
nominal).
+
-
CLICK
❶
❹
❸
❷

MTP51-JP User Manual
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DISPLAY MENU
STATUS
PRESET
Current/Load
FACTORY/USER/PRESET1..8
Save
USER
TUNING
CH
00÷59
GR
00÷39 + SYNC GROUP
Freq
According to the frequency range of the transmitter
AUDIO
AF gain
AFlevel
-60÷+40 dB (1dB step)
-54÷+46 dBu (1dBu step)
Phase
0/180
HP filter
Flat/60/80/120/170/250/400 Hz
Noise R..
ENR-Wisy/ENC-Wisy
Limiter
On/Off
MOD
Modulation
Narrow/Wide
LP Filter
17 kHz / 20 Khz
RF/Battery
RF Power
10/L20/L50 mW
Battery
Alkaline/Ene-PRO/Lithium
LED
Led Light
0÷16
Led Mode
None/ModPeak/PTT
MIC
Mode
2 wire/2wire+biad/3 wires
PTT
Disable/Normal/Muting/No Data
Disable: when the PTT button is pushed, nothing happen. (the transmitter
sends AF+Tone squelch).
Normal: when the PTT button is pushed, the transmitter send a different RF
signal. According to the receiver configuration the audio can be
enabled/disable on LINE (and/or COM).
Muting: the transmitter doesn’t send the audio. The voice is cut, it doesn’t
enter to the microphone.
No Data: the transmitter sends neither tone squelch nor battery data.
Name
“transmitter
name”
Max 8 characters
INFO
FW(Firmware)/HW(Hardware)/SN(Serial
Number)/BW(Bandwidth)/BL(Bootloader)/OPT(Options)
IRDA
Irda enable for SYNC with Wisycom receivers or
for management with Wisycom Manager with UPKmini
Lock
To lock the trasmitter

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+
-
CLICK
Using <+/-> selector all menus can be accessed in sequence, push <click> to enter edit mode:
<+/-> to setup field
<click> again to confirm changes and exit.
exit without confirmation if no button is pressed after a few seconds time out.
<START UP>
These menus are displayed during power up for few seconds
First one gives information of antenna to be used. The number displayed is code of the antenna to
be used..
The second menu gives indication on product:
- product id (MTP51-JP),
- the firmware release (ex. 1.30.0Y),
- the band in extended format
- the serial number.
Keep selector pushed to hold this menu!
<STATUS>
This is the first menu displayed after power up.
Major info are displayed:
Current channel/group (i.e. CH:00 GR:39)
Current frequency (i.e. 566.000 MHz)
Mic gain (i.e. AF: +00dB) and high pass filter (i.e. HP:60 Hz)
If in the top right there is “RF 50” or “RF 10”, the transmission is active respectively at 50mW or
10mW
On left side, the battery bar is displayed
<PRESET>
This menu can be entered by scrolling selector
MTP51-JP 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) an
asterisk appears on the top-right 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 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 Wisycom Manager).
All parameters can be “left unchanged”, “changed” or “changed and lock”, allowing a very flexible way
to pre-program MTP51-JP configuration.

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<TUNING>
This menu can be entered by scrolling selector or
using quick channel setup buttons (<ch>).
In this menu current 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).
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)
<AUDIO>
In the AUDIO menu are shown all the audio parameters.
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)
Audio phase: 0° or 180°
Note: Since common "2-wires + bias" microphones invert the phase, when the MIC mode of the
transmitter is set to “2wires+ bias”, the phase is automatically inverted and so the complete system
(MTPxx+MIC) has 0° phase (an asterisk appear on the display near the phase to indicate that the
phase was inverted).
High Pass Filter: applies different audio HP filter: Flat/ 60Hz/ 80Hz/ 120Hz/ 170Hz/ 250Hz/ 400Hz.
Noise reduction:
JNR-Wisy: designed for maximum noise reduction
JNC-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

MTP51-JP User Manual
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(thanks to the feedback system), maintaining a distortion <3%. When the limiter intervene,
the front led turns blue.
If this parameter is set “Off”, the limiter is disable.
<MOD>
Modulation: WB (Wideband) or NB(Narrowband)
LP filter: 20kHz or 17kHz (only for NB modulation)
<RF/BATTERY>
RF power can be setup to L50mW, L20mW and 10mW.
Battery menu to select the type of battery used. MTP51-JP support Alkaline/NiMH/Eneloop Pro.
battery type.
<LED>
Led Light allows to change the brightness of the front led (0÷16) .
Led Mode:
- None: allows to disable modulation peak LED on front led (the red light)
- ModPeak: allows to enable modulation peak LED on front led (become RED when audio get close
to saturation when the limiter is not enable)
- PTT: allows to enable RED color on front led when PTT button is pushed.
<MIC>
Mode: Following Mic mode can be setup (for LEMO option)
2 wires: (PTT is possible) for external audio input
2 wires + bias: (PTT is possible) for most 2 wires MIC
3 wires: (no PTT) for most 3 wires MIC
PTT setting defines how and what information the transmitter has to send in normal use or when
the PTT button is pushed:
Disable: when the PTT button is pushed, nothing happen. (the transmitter sends AF+Tone
squelch)
Normal: when the PTT button is pushed, the transmitter send a different RF signal.
According to the receiver configuration the audio can be enabled/disable on LINE (and/or
COM).
Muting: the transmitter doesn’t send the audio. The voice is cut, it doesn’t enter to the
microphone
No Data: the transmitter sends neither tone squelch nor battery data.
<NAME>
In this menu it’s possible to see the frequency set on the device and
the name of the transmitter.
It’s possible to enter on this menu also pressing at the same time the CH/GAIN buttons ( ❷+❸)

MTP51-JP User Manual
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<INFO> menu
This menu can be entered by scrolling selector.
In this menu it’s possible to see FW version/HW version/Serial
Number/Bandwidth/Bootloader version/Option
<IRDA>
While there is this menu, the device can be connected to IRDA for
setup or firmware upgrades.
Note: if the IRDA interface is enabled and there’s no communication for around 10 seconds, the IRDA
interface is automatically turned off.
During power on the device, the IRDA interface is enabled for 14 seconds. Thanks to this feature it
is possible to connect the transmitter to the Manager for upgrade/configuration or do a SYNC with
Wisycom receiver without enter manually on the menu.
<LOCK>
Long pressing (2 sec.) selector button (click) it locks MTP51-JP in
transmission mode.
To unlock, long pressing (2 sec.) selector button again.
<BOOTLOAD>
This menu can be entered by turning on the transmitter while pushing at the same time both quick
channel setup buttons (<ch> & <gain>) or connecting the device via
IRDA using the IR Programmer for FW update
Device is forced in bootloader mode to allow FIRMWARE UPDATE.
MIC Mode setting:
MIC Mode:
Pin out
Gain
PTT
Led Mode
’2 wires’:
1=GND
3=AF
-60/40 dB
Disable
Normal
Muting
No data
None
Mod. Peak
PTT
‘2 wires + bias’:
1=GND
3=AF+5.5V
-60/40 dB
Disable
Normal
Muting
No data
None
Mod. peak
PTT
‘3 wires’:
1=GND
2=5.5V
3=AF
-60/40 dB
Disable
No data
None
Mod. peak
3 PIN LEMO CONNECTOR
(use FVB.00.003.NLN on Mic)

MTP51-JP User Manual
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TECHNICAL SPECIFICATIONS
Switchable
channels
2400 allocated by 40 groups of 60 channels (in specific frequency range), quickly
selectable with dedicated buttons
Switching window
1240-1260 MHz
Frequencies
Quartz PLL frequency synthesizer circuit (25 kHz step)
Frequency stability
± 2,5 ppm (in the rated temperature range)
Temp.range
-10 ÷ +55 °C
Max RF power
10 mW / L20 mW / L50 mW
Spurious emissions
< 2 nW
Modulation
Wideband/Narrowband FM with pre-emphasis
Nominal deviation
±40 kHz Wideband, ±25 kHz Narrowband
Peak deviation
±56 kHz Wideband, ±35 kHz Narrowband
Telemetry feature
MTP51-JP transmits also a digitally modulated sub-carrier, suitable for:
▪tone-squelch operating
▪remote battery monitoring
▪optional PTT (push to talk) operation
AF input connector
LEMO option
Configurable on ‘mic’ display menu in 3 options:
▪’2 wires’:
▪‘2 wires + bias’:
▪‘3 wires:
gain selectable -60 ÷ +40 dB (-54 dBu ÷ +46 dBu peak), no bias voltage
gain selectable -60 ÷ +40 dB (-54 dBu ÷ +46 dBu peak), 5.5 V on 4k7 bias supply
gain selectable -60 ÷ +40 dB (-54 dBu ÷ +46 dBu peak)
AF input level
100 dB adjustable range from -54 dBu (775 uV) to 46 dBu (15.5 V) at peak deviation
(1 kHz), adjustable in 1 dB steps
Max. input level
+46 dBu (15.5 V) at clipping, +20 dBu (7.75 V) at nominal level
Noise-Reduction
ENR (Wisycom Extended-NR), with independent Attack- and Recovery-time, noise
optimized
ENC (Wisycom Extended-NC), with independent Attack- and Recovery-time, voice
optimized & with reduced pre-emphasis
AF bandwidth
45 Hz ÷ 21 KHz (3dB), 55 Hz ÷ 20 KHz (1dB) Wideband with LPF at 20kHz
45 Hz ÷ 17 KHz (3dB), 55 Hz ÷ 15 KHz (1dB) Narrowband with LPF at 15kHz
Distortion
< 0.3 % (0.15 % typ.)
Signal-to-noise
ratio
▪typ. 115 dB (A)rms with 40 kHz deviation
▪typ. 121 dB (A)rms with 56 kHz deviation
Led
Led indication with bicolor led (red & green) on wireless power switch:
▪Wireless transmission status:
GREEN on/off
▪Battery lifetime status: GREEN - steady (> 25%)
- slowly blinking (< 25%) - quickly blinking (<12%)
▪Modulation peek (if activated & the
limiter is disabled): RED
▪Ptt status: RED if active
▪Limiter into action: Blue
Display
High contrast OLED (Organic light-emitting diode) bicolor display (96 x 36 pixels)
8 step battery lifetime indication: 7 bars (100%-87%-75%-63-50%-38%-25%) and “empty
bar” quickly blinking (12% remaining)
PTT function
Pin 3 of the AF connector can be setup to an external push button
Power supply
1 AA size batteries (Alkaline, rechargeable NiMH Eneloop Pro., Lithium)
Battery life
8 hours @ L50mW continuous working with Lithium
Dimensions
58.2 x 64.8 x 17.5 mm (Height-Width-Depth)
Weight
Approx. 72 g. without batteries (90g with batt.)

MTP51-JP User Manual
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Drawing
Compliance
Model
In Compliance with
Max Power
Country
MTP51-JP
001-A17033
50mW
Japan
Note: unit is mm
Before putting the device into operation, please
observe the respective country-specific regulations!
R
MIC marking identifier can be found in the battery compartment.

MTP51-JP User Manual
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MANUFACTURER DECLARATIONS
In compliance with the following requirements
RoHS Directive (2002/95/EC)
WEEE Directive (2002/96/EC)
Please dispose of the diversity transmitter at the end of its operational lifetime
by taking it to your local collection point or recycling center for such
equipment
Battery Directive (2006/66/EC)
The supplier batteries or rechargeable batteries can be recycled. Please
dispose of them as special waste or return them to your specialist dealer. In
order to protect the environment, only dispose of exhausted batteries.
Obblighi di informazione agli utilizzatori
ai sensi dell’art. 13 del Decreto Legislativo 25 luglio 2005, n. 151 “Attuazione delle Direttive 2002/95/CE,
2002/96/CE e 2003/108/CE, relative alla riduzione dell’uso di sostanze pericolose nelle apparecchiature
elettriche ed elettroniche, nonché allo smaltimento dei rifiuti”
Smaltimento di apparecchiature elettriche ed elettroniche di tipo professionale
Il simbolo del cassonetto barrato riportato sull’apparecchiatura o sulla sua confezione
indica che il prodotto alla fine della propria vita utile deve essere raccolto separatamente
dagli altri rifiuti.
La raccolta differenziata della presente apparecchiatura giunta a fine vita è organizzata e
gestita dal produttore. L’utente che vorrà disfarsi della presente apparecchiatura dovrà
quindi contattare il produttore e seguire il sistema che questo ha adottato per consentire
la raccolta separata dell’apparecchiatura giunta a fine vita.
L’adeguata raccolta differenziata per l’avvio successivo dell’apparecchiatura dismessa al riciclaggio, al
trattamento e allo smaltimento ambientalmente compatibile contribuisce ad evitare possibili effetti
negativi sull’ambiente e sulla salute e favorisce il reimpiego e/o riciclo dei materiali di cui è composta
l’apparecchiatura.
Lo smaltimento abusivo del prodotto da parte del detentore comporta l’applicazione delle sanzioni am-
ministrative previste dalla normativa vigente.
Smaltimento batterie usate
Questo prodotto può contenere batterie. Questo simbolo apposto sulle batterie
significa che non possono essere smaltite insieme a normali rifiuti domestici, bensì
devono essere depositate negli appositi punti di raccolta delle batterie.
Iscrizione al Registro A.E.E. n. IT09100000006319