WisyCom MTK952 User manual

MTK952 User Manual
Dual Transmitter
Mono - Stereo - Intercom
Modulation
SN: ________________
rev.02 (rif. FW 1.6)
Date: 17 October 2013

MTK952 User Manual
rev.02
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BRIEF DESCRIPTION
MTK952 is a versatile dual transmitter capable of working in a huge UHF bandwidth and of
generating any kind of narrow-band modulations, with very high quality and low spurious
emissions.
Main features:
330 MHz Bandwidth (470 MHz –800 MHz)
2400 user-defined frequencies (40 group by 60 freq.)
Stereo, mono, intercom audio modulation
Output power up to 2 Watt (/W option)
Analogue & digital input (AES3)
Redundant power supply 230/110 Vac & 12 VDC
DSP audio processing (40bit floating point / 2Gflops) with multi-companding
Direct Digital Synthesis (DDS) of signal for the highest flexibility and quality (> 70 dB
stereo separation)s SWR (Stationary Wave Ratio) sensing on antenna outputs
Above a schematic with the functional diagram of one transmitter of MTK952.
MTK952 use extreme technologies like:
Direct Digital Synthesizer (DDS)
DDS is a type of frequency synthesizer used for creating arbitrary waveforms from a single,
fixed-frequency reference clock. A DDS has many advantages over its analog counterpart, the
phase-locked loop (PLL), including much better frequency agility, improved phase noise, and
precise control of the output phase across frequency switching transitions.
The Direct Digital Synthesis (DDS) technology can generate virtually any kind of modulation
while keeping an absolute phase accuracy.
Double conversion stage
Using a double conversion and saw filter at IFs (intermediate frequencies) we can achieve a
very low spurious emission and a great bandwidth agility (330 MHz).
Intermodulation cancelling power amplifiers
PA module (power amplifiers) is designed with an exclusive circuitry that reduce the
intermodulation generated by external carriers using a wideband phase cancelling design.
Digital audio with Shark™ DSP 40bit floating point & 2 Gflops power from Analog Device
A very powerful Analog Design Shark DSP processor manages the audio with very low delay
(< 1 ms) and emulates by software all companding and pre-emphasis effects.

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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.
Mount the apparatus as indicated in the instruction, do not block side grids for air ventilation
ATTENTION: supply the apparatus with a correct mains voltage and with the ground
connection. Check the power cord integrity.
The power cord must be protected from damage
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.
The ON/OFF is a double pole circuit breaker, but to ensure the complete disconnection of the
apparatus, disconnect the power cord.

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.
WARNING! The apparatus is intended for professional use; anyway the manufacturer alerts the
user that the headphone output power of the apparatus could exceed the level of 85 dB(A) of
sound pressure level and this could be dangerous for the hearings. Do not use the headphone with
high power level or for long time. Reduce the power or suspend the hearing in case of any kind of
hearing problem.

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QUICK START INSTRUCTION
1. Connect to the power outlet using the supplied power cable (see rear panel: connector 1)
2. Attach the antennas to the antenna out BNC connections (see rear panel: connectors 8 and 13)
3. Connect the audio sources to the relative audio input connectors (see rear rear panel: connectors 7
for digital audio sources, connectors 9÷12 for analog audio sources)
NOTE: the cascade configuration allows to use the same analog audio input for more transmitter
4. Power on the MTK952
5. Switch off the RF output:
a. While the MTK952 is powering on and the progress bar appears, push the 3rd button at
the bottom (see indication “OFF” on the display)
b. At the end of MTK952 power on, push the lower button on the right of the displays
6. Enter in the MAIN>Audio source menu and
a. configure the input parameter between digital and analog (according to the audio
source connected at point 3)
b. configure the AF level meter parameter as modulation
c. if digital audio source:
leave audio gain left and right parameters to 0dB and adjust the audio level
with the mixer
if need change the audio gain left and right parameters
d. if analog audio source:
leave audio gain left and right parameters to 0dB and adjust Max audio level
parameter. NOTE: this parameters is unique for both the channels (right and
left)
if need change the audio gain left and right parameters
NOTE: adjust the audio level (thru the mixer and/or Max audio level and/or the audio gain left
and right parameters) so that, for the maximum input signal level,
the AF level bars show the MAXIMUM
NUMBERS OF GREEN LED INDICATORS AND NO
YELLOW/RED CLIP LED INDICATORS
the MOD. (modulation) bar shows the
MAXIMUM NUMBERS OF GREEN LED
INDICATORS AND NO YELLOW/RED PEAK
LED INDICATOR
NO
YES
NO
YES
7. Enter in the MAIN>Gh-Gr menu and set the group/channel/ frequency
8. Enter in the MAIN>Mode menu and set the appropriate Mode (see Compatibility table for more
detail)
9. Enter in the MAIN>TX Power menu and set the TX power (10÷200mW)
10. Exit from the menu and switch on the RF power output pushing the lower button on the right of the
display

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FRONT PANEL CONTROL AND FUNCTIONS
MTK952 allows an easy and quick configuration using buttons, push knobs and displays.
The front panel is functionally divided in the following section:
A –SCAN, SYNC and INFRARED
Automatic sync with “MPR30” receiver through infrared interface (SCAN function will be available
in futures firmware versions)
B and C - TRANSMITTER1 and TRANSMITTER2
Transmitter 1 and 2 configuration and monitor
of radio/audio levels.
❶Audio and Modulation indicators
two LED bars for the AF levels (L=left & R=right levels): they can show AF input levels or
modulation levels (after the pre-emphasis and compander phases, before the
modulation phase) according to the AF level meter parameter on Audio source menu
FM modulation of the transmitter channel (modulation in dB referred to the nominal
deviation)
❷LCD display.(64 x 254 yellow-lighted display)
❸3 push buttons (membrane). The function of each button (upper, middle and lower) will be
readable from the context menu on the display.
❹Push rotary knob. Rotate and push to select.
❺Warning (YELLOW) and Alarm (RED) light indicator
D - MONITOR
Monitor 1 and 2: it actives monitor audio on headphone jack output (6.3mm - ¼”) for transmitter 1
and 2, respectively (a green LED is lighted when audio is enable). Audio level can be adjusted with
the rotary knob. The red led (CLIP) indicates a clipping in the audio monitor output.
E - POWER & LOCK
LOCK: it locks the editing of both the displays.
POWER: ON/OFF square powering button turns on/off the transmitter. When in OFF position both
phases are disconnected from power.
A
B
C
D
E

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REAR PANEL
❶❷❸ ❹❺❻ ❼❽❾❿⓫⓬⓭
7
4
❶AC Power Plug AC mains power input, IEC Connector 90-264 Vac
❷Product label with Serial Number, Options and Bandwidth
❸Ground point To connect the rack to ground
❹DC Power Plug (optional) DC power input, 10-16Vdc, Max 6A
❺label with IP address of Ethernet interface configured on the MTK952 (it can be modified using
the Manager application)
❻Ethernet socket (RJ45) for connection to a network or computer
❼AES/EBU (XLR 3 pin connector) for digital audio input TX1 and TX2
❽Antenna output TX1 (RF output) BNC socket
❾Audio input left TX1 (balanced AF input) ¼” (6,3mm) jack/XLR-3 combo socket and ¼” jack
❿Audio input right TX1 (balanced AF input) ¼” (6,3mm) jack/XLR-3 combo socket and ¼” jack
⓫Audio input left TX2 (balanced AF input) ¼” (6,3mm) jack/XLR-3 combo socket and ¼” jack
⓬Audio input right TX2 (balanced AF input) ¼” (6,3mm) jack/XLR-3 combo socket and ¼” jack
⓭Antenna output TX2 (RF output) BNC socket

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LCD DISPLAY:TRANSMITTER MENU
MTK952 info screen
Switch on the MTK952 and by pushing one of rotatory knobs (at the right of the display) all the
basic information are displayed:
Display of TRANSMITTER 1
Display of TRANSMITTER 2
❶product and bandwidth
❷serial number
❸class and hardware version
❹Firmware version: it includes application
firmware version and DSP firmware version
On the display of TX2, it is possible to check the max
level of power transmitted of the MK952.
Option: is the commercial code
(W05 / 0W2 /2W0)
Max power: is the max settable power
(50 mW/200mW/2W)
2W board: shows if the additional 2Watt board is
installed or not
Status screen
After switch on, the transmitters display the Status screen
The main view has the following info:
❶transmitter name
❷current channel number and current tuning frequency
❸current group number and group name
❹current mode
❺TV channel used for the current frequency
❻current TX power setting
❼current SWR (Stationary Wave Ratio)
❽power supply type ( for AC power for DC power)
❾menu
Thru the main menu on the LCD display and the LED bars for the AF level and modulation the user
has the complete monitoring in real time of the wireless channel in use.

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MENU TREE
*1 Depending on the customization
*2Only with a Mode “mono”
MAIN
Ch-Gr CH: 00 ÷59 GR: 00 ÷39
Frequency: 470÷800 MHz
Group name
Mode ENR-Wisy Stereo / EVO Stereo / ENC-Wisy Stereo / SR Stereo /
ENR-Wisy / ENC-Wisy / EVO / SEN / SEN -d0 / COM-Wisy 25K /
COM-Wisy 20K / COM-Wisy 12K5 / MAX / USER 1..7 / *1
TX on air at
startup Yes / No
TX Power 10 / 20 / 50 / 100 / 200 mW
Audio source
Input Analog / digital
Max audio
level -6 ÷18 dBµ
Audio gain
left -20 ÷24 dBµ
Audio gain
right -20 ÷24 dBµ
AF level
meter input / modulation
Mono config *2mono/mono-R/mono-L
Equalizer
Bass G: -12 ÷12 dB
Fr: 40 / 80 / 160 Hz
Mid
G: -12 ÷12 dB
Fr: 1.5 / 2.2 / 2.8 KHz
Q: 0.7 / 1.0 / 2.0
Treble G: -12 ÷12 dB
Fr: 5.0 / 0.7 / 10.0 KHz
SAVE/NEXT/ EXIT
Options
Name
DISPLAY
brightness 0 ÷15
DISPLAY
timeout 5 ÷120
Info…
IP
Serial
Option
Range
Power profile
Temperatures
RF amplifier
RF generator
Micro
Power supply
FW ver.
Boot ver.
App FW ver.
DSP FW ver.
Alarms

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To access the configuration menu of the transmitter is necessary to press the rotary knob (at the
right of the display①).
To activate one of the items in the menu, press the corresponding button to the right of the
display (see picture hereafter②).
②
①
MODE
Select for edit
Name
Mono/stereo
Compander
HP filter Flat / 20 /40 / 60 / 80 / 120
/ 170 / 250 / 300 HZ
LP filter 3 / 4 / 12 / 15 / 20 KHz
Pre-emphasis Bypass / 10-750 µs
FM peak deviation 2 ÷100 KHz
TSQ frequency 30 ÷260 KHZ
28 ÷34 KHz
TSQ deviation OFF / 100 Hz ÷5 KHz

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Main menu
The first item on the menu tree is “MAIN”.
Ch-Gr
The CHANNEL-GROUP item enables the user to edit channel, channel group and frequency of the
selected item. Change, rotating the knob, the channel or the group of channels and confirm or exit
with the buttons. To edit the frequency of selected channel, press the middle button and change it
with the knob. Press the knob to move between MHz and KHz. Confirm or exit with the buttons.
As shown in the above picture, the display area has 3 rows with:
1) Channel number (0 to 60) and Channel frequency (in 5kHz step)
2) Number (1 to 40) and Group name (8 char.)
3) Group description (30 char.)
The MTK952 has 40 groups of 60 channels each. Normally this is too much for wireless
microphones applications.
Connecting with computer with WISYCOM Rack MANAGER software, it is possible to hide single
channels or even complete groups of channels: once hidden those items are not shown anymore
on the channels or groups selection. To show channels or groups hidden use again the WISYCOM
Rack MANAGER software.
Using this software it is also possible to lock channels or groups. When a channel is locked, it is not
possible to change the frequency from the front panel of the transmitter. Locking a group means
that all channels are locked. When a channel or a group are locked, at the left of the group name in
the Chan-Group menu will appear a lock icon . When the lock picture is shown, the central
button is not displayed, thus changing frequency is not possible.
Group name
The second item on the Main menu is GROUP NAME; with this function is possible to assign or
change a name to a group of channel. This short name (8 character) is displayed at the right of the
group number in the main display view. First chose the group and then press the knob. You will be
able to edit any character of the group name rotating the knob. Push the knob to edit the next
character. Confirm or exit with the buttons.
NOTE: when the Group name is SYNC (see synchronization) it is not possible to change it.
Mode
The MODE menu allows to assign a Mode setting at the transmitter. Rotating the knob it is possible
to change current mode among the modes available (for more detail see MODE menu).

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TX on air at startup
This menu allows to decide if turn ON or turn OFF the RF power of the transmitter while the
MTK952 is powering on.
If set to No: while the MTK952 is powering on, the RF output remains mute. The Status Screen on
the display shows “TX OFF “ and the set Group, Channel and frequency.
NOTE: When the RF power of the transmitter is OFF, all the led and the bars remain turned off.
Pushing the rotatory knob (at the right of the display) it is possible to activate the led and bars
(keeping the RF power OFF) and enter on the menu.
In order to activate the RF output press the 3rd button
at the bottom (see indication “ON” on the display).
If set to Yes: during the MTK952 power on, the progress bar appears for 10 seconds.
During this interval (10 sec.) it is possible to switch off
the RF output. If no button is pushed, at the end of the
timer the RF output is enabled automatically.
TX power
This menu allows to set the power of the transmitter. Rotating the knob it is possible to change
current TX power setting among 10/20/50/100/200 mW (2W only for MTK952 with 2W option).
Push the SAVE button to confirm. In the same screen is showed the reflected power and the SWR
(Stationary Wave Ratio) sensing on antenna outputs.
The set TX power and the measured SWR are always
showed at the bottom of the display.
Audio source
This menu allows to set several parameters of audio input
Parameters
Range setting
Function
Input
digital/analog
To set the audio input
Max audio level
(only for analog input)
-6/0/6/12/18 dBu
To change (increase or decrease) the analogue audio
input for both R(right) and L(left) channels input
Audio gain left
-20÷24dB
To change (increase or decrease) the input level of the
left channel on DSP
Audio gain right
-20÷24dB
To change (increase or decrease) the input level of the
right channel on DSP
AF level meter
input/modulation
To set which AF level is shown in the two LED bars for the
AF levels (L=left & R=right levels): they can show AF input
levels or modulation levels (after the pre-emphasys and
compander phases)
Mono config
(only for mono Mode)
Mono/mono-
R/mono-L
To set the type of mono input

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Equalizer
This menu allows to of adjusting the gain between frequency components (bass, mid and treble)
within the audio signal. There are 4 windows in cascade:
bass windows: allows to change gain and frequency of low frequencies
mid windows: allows to change gain and frequency of middle frequencies
treble windows: allows to change gain and frequency of high frequencies
eq windows: allows to save the equalization parameter or exit without save
Each window shows the following information:
❶windows name
❷parameter to set (gain or frequency)
❸graphic equalizer: frequency on
horizontal axis, gain on the vertical axis
❼
HP filter
set in the
mode
menu
❻
LP filter
set in
the
mode
menu
❺
set
frequency
❹
set gain
For each window it is showed the graphic equalizer which help to see the set parameters. Push the
rotatory knob to change the parameter between gain and frequency (the respective letter Gor Fr
is highlighted during the setting phase) and
rotate it to change the value of the parameter. The set value is showed on the bottom of the
windows (see points ❹ and ❺ on the above image).
Push the lower membrane button to go on the next windows.
The following table recaps the settable values on the 3 windows:
Fr (frequency)
G (gain)
Q (Q factor)
bass
40/80/160 Hz
-12÷12dB (1dB step)
-
mid
1.5/2.2/2.8kHz
0.7/1.0/2.0
treble
5/7/10kHz
-
NOTE: High Q factor means narrow bandwidth. Low Q factor means wide bandwidth.

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Options
This menu allows to change some parameters of the transmitter or display some information
Parameters
Range setting
Function
Name
ex. TRANSMITTER1
To change the name of the transmitter shown in the Status screen.
12 alphanumeric characters (A-Za-z0-9, case-sensitive)
DISPLAY brightness
0÷15 step 1
To set the brightness of the display
DISPLAY timeout
5÷60 step 5sec.
60÷120 step 10 sec.
To set the display timeout for:
decrease the brightness of the display and
return to Status screen
Info
IP address
ex. 192.168.10.1
to show the IP address
Serial
ex. R1825694
to show the serial number of the product
(the same indicated in the product label)
Range
ex. 470-800
to show the frequency range (MHz)
Temp. RF ampl.
ex. 30°C
to show the temperature took near the RF amplifier (°C)
Temp. RF gen.
ex. 31°C
to show the temperature took near the RF generator (°C)
Temp. micro
ex. 33°C
to show the temperature took near the RF microprocessor (°C)
Temp. pwr supply
ex. 31°C
to show the temperature took near the power supply (°C)
FW ver.
ex. 1.1
to show the firmware version (it sums up Boot+App+DSP versions)
Boot ver.
ex. 0.2.d
to show the bootloader version
App FW ver.
ex. 0.36.d
to show the application firmware version
DSP FW ver.
ex. 0.61.d
to show the DSP firmware version
Alarms
ex. 0
To show the number “n” of active alarms:
n=0 0 active alarms
n>0 n active alarms
When “n”>0, it is possible to enter in the alarm submenu which
allows to show the alarms list: a brief description and an alarm
code for each alarm.
For the complete list of alarms, see Alarm List section
Note: the complete software and hardware status is displayed on the MTK952 info screen

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MODE menu
The second item on the menu tree is “MODE”. It allows to manage several modes.
Each mode is a setup saved in an external memory that allows to customized the transmission
changing some parameters of the DSP. There are 2 types of modes:
PRESET mode: it allows to change only some parameters (the other are fixed). See
compatibility table at the end of the manual for more detail
USER mode: it allows to change all the parameters. Currently 8 USER modes are available
The menu Select for edit allows to select the MODE to edit. Push the knob to select the mode and
push the button LOAD to load the previously saved parameters. It is possible to change the
parameter value only where the EDIT indication appears.
During this phases, the name of the MODE to edit appears on the left top of the
display ①. If the MODE to edit is the current mode
loaded on DSP (on the Main>Mode menu), “dsp”
abbreviation is shown ②.
Shown below the complete parameters list
Parameter
Range setting
Description
Changeable
PRESET
MODE
USER
MODE
Name
name of mode
no
yes
Mono/stereo
mono/stereo
type of transmission
no
yes
Compander
compander type
no
yes
HP filter
Flat/20/40/60/80/
120/170/250/300
Hz
High Pass filter
yes
yes
LP filter
3/4/12/15/20 Kz
Low Pass filter
yes
yes
Pre-emphasis
Bypass/10-750 µs
Pre-emphasis
related
to the
mode
yes
FM peak
deviation
2÷100 KHz
Max peak deviation
(audio+tone squelch)
yes
TSQ frequency
30÷260Hz and
28÷34KHz
Frequency of Tone Squelch signal
yes
TSQ deviation
OFF/100Hz÷5kHz
Deviation of Tone Squelch signal
yes
①
②

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Synchronization
The SYNC function is useful to tune a transmitter on the same frequency of the receiver via the IR
interface. Before starting the sync function tune the receiver on desired channel, manually or using
the SCAN utility. After this, enable the IR interface on the receiver. Now press the Sync button
and "START" on the transmitter that you want to sync to start the SYNC function.
Keep the IR window of the transmitter in front of the IR window of the receiver and, as soon as
the connection is done, the receiver will send to the transmitter all the information needed
(frequency, channel, group and receiver name).
If the operation is not possible, (i.e. the frequency range of the transmitter is not compatible with
the frequency of the receiver), the display will show an error message.
After synchronization, the transmitter show the name of the receiver (ex. SINGER_1)
CASE A: if frequency, channel and group are the same in the two devices, channel and group are
also displayed (ex: CH00: 566.000, GR39: Unlock)
CASE B: If frequency, channel & group of the transmitter are different from those of the receiver,
the transmitter shows only the frequency after the word SYNC. (ex: SYNC: 620.000)
Message displayed after the synchronization
Status screen
Case A
Case B
START TX2
START TX1

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Alarm List
When an alarm occurs, the MTK952 can do one or more of the following acts:
A. Show a message on the display
B. Turn on the yellow or red alarm led
C. Insert the alarm on the alarm list in the MAIN>Options>Info>Alarms menu
The alarm can be related to a specific transmitter (TX1 or TX2) or general.
Shown below the complete alarms list:
Alarms
Code
Type
Message on display (A)
Led
(B)
Alarm list (C)
TX Power Mismatch
-
TX
ATTENTION: antenna mismatch!
High SWR on Tx out
yellow
no
TX Power reduced
0x05
TX
ATTENTION: antenna mismatch!
High SWR on Tx out. Rf pwr
reduced
yellow
Tx power
reduced
Timeout 5 sec on PLL
0x84
TX
ATTENTION: RF PLL lock lost
red
Rf PLL lock lost
Errore bus I2C
general
EEPROM access error
(only on TX1)
red
Error on I2C
bus
Timeout 5 sec on PLL
OL969
0x84
general
ATTENTION: OL PLL lock lost
(only on TX1)
red
OL PLL lock lost
High internal
temperature
0x04
general
ATTENTION: internal temperature
high
(only on TX1)
yellow
High internal
temperature
Fan #1 doesn't work
0x02
general
ATTENTION: fan #1 does't work
properly
(only on TX1)
yellow
Fan #1 doesn't
work
Fan #2 doesn't work
0x03
general
ATTENTION: fan #2 does't work
properly
(only on TX1)
yellow
Fan #2 doesn't
work
Recovered
configuration and
calibration data from
copy1 on the
memory
0x80
general
no
no
Mem. copy1
recovered
Recovered
configuration and
calibration data from
copy2 on the
memory
0x81
general
no
no
Mem. copy2
recovered
Load default
configuration and
calibration data
0x8D
general
no
no
Mem. init.
Service req.

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Troubleshooting
Alarms
Alarm description
Throubleshooting
TX Power Mismatch
The SWR on Tx out is too high
- check if the antenna is correctly connected
- check if the antenna cable is correctly
connected
- check if the antenna frequency is according
to the one set on the transmitter
reduced TX Power
The SWR on Tx out is too high,
the RF power is reduced
- check if the antenna is correctly connected
- check if the antenna cable is correctly
connected
- check if the antenna frequency is according
to the one set on the transmitter
Timeout 5 sec on PLL
Error during frequency tuning
- send to repair at Wisycom Repair Centre
bus I2C Error
Error on I2C bus
- send to repair at Wisycom Repair Centre
Timeout 5 sec on PLL
OL 969
Error during frequency tuning
- send to repair at Wisycom Repair Centre
High internal
temperature
One of the 4 temperature
sensors measures a temperature
> 60°C
- check if the two fans work properly (check
alarms code 0x02 or 0x03 on the alarm list)
- switch off the MTK952 for cooling and check
the location temperature
- clean the ventilation grids
Fan #1 doesn't work
The fan on the left (#1) doesn’t
turn
- switch off and switch on the MTK952
Fan #2 doesn't work
The fan on the right (#2) doesn’t
turn
- switch off and switch on the MTK952
Recovered
configuration and
calibration data from
copy1 on the memory
During the MTK952 initialization
phase, the CRC-16 check of data
(copy1) detects error.
- none (the MTK952 automatically replaces
the corrupt copy1 with copy2)
Recovered
configuration and
calibration data from
copy2 on the memory
During the MTK952 initialization
phase, the CRC-16 check of data
(copy2) detects error.
- none (the MTK952 automatically replaces
the corrupt copy2 with copy1)
Load default
configuration and
calibration data
During the MTK952 initialization
phase, the CRC-16 check of data
(copy1 and copy2) detects error.
- check in the MAIN>Options>info menu the
Serial take on the ‘UNCAL’ vale. In this case
send the MTK952 to the Wisycom Repair
Centre for recalibration.
If a problem not listed in the above table occurs or if the problem cannot solved with the proposed
troubleshooting, please contact support service at [email protected] or [email protected].

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RACK TX MANAGER MTK952
How to install Rack Tx Manager MTK952
Run the executable file (i.e. Rack Tx Manager (MTK952) SERVICE vx.x.x.x Setup.msi) and follow the
installation instructions.
How to update Rack Tx Manager MTK952
Uninstall the Rack Tx Manager MTK952 program active in your computer and afterwards install the
newest version of Rack Tx Manager MTK952.
How to connect MTK952 to Rack Tx Manager MTK952
1. Connect to the PC to the MTK952using the supplied Ethernet cable
2. Run Rack Tx Manager MTK952
3. Power on the
transmitter
4. Push Disconnected
button. On the Device
connection windows
select Ethernet port and
fill in the MTK952 IP
address. Remember that
the label on the rear
panel shows the IP
address configured in
the factory. Then click
OK.
5. If the connection is
ended well, the
Connected icon is
showed on the top of
the panel and
“Connected on
Ethernet” is displayed
on the information
panel

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MTK952 User Manual
18
How to load/save channels memory
Select Channel memory panel
Write:
Push the button Write from WDF file… and select the wdf file to load a wdf file on the MTK952.
Read and save:
Push the button Read and save to WDF file… , insert the .wdf file name and the path where to
save the wdf file.
During the process of writing/reading & saving, a green bar below the panel shows the progress of
the process and on the information panel it is possible to verify what the application is doing.
To Modify the wdf file, it is possible to use the spreadsheet FREQUENCY 2010 v15 beta.xls presents
at the following link:
- open the file and enable changes and macro
- load the wdf file clicking on READ WDF button
- execute the desiderate changes
- save the wdf file clicking on SAVE WDF button
The WDF thus modified can be used to write on the MTK952’s channels memory.

MTK952 User Manual
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19
TECHNICAL SPECIFICATION
Switchable channels
:
2400 allocated by 40 groups of 60 channels quickly selectable with dedicated buttons
Frequency bandwidth
:
470-800 MHz
Switching bandwidth
:
330 MHz tuneable in 5 kHz steps
Temperature range
:
-10 ÷ +55 °C
RF output power
:
Selectable: 10,20,50,100,200 mW (ERP) for MTK952-0W2
Max RF output power
:
MTK952-W05: 50mW
MTK952-0W2: 200mW
MTK952-2W0: 2Watt
[NOTE] RF power can be limited on frequency base accordingly to specific country
restrictions (software based)
“A” / “B” antenna output
:
with BNC type female connectors
RF impedance
:
50 Ω
Spurious emissions
:
< 2 nW (in the transmitter bandwidth)
Modulation
:
FM, MPX Stereo or mono, selectable with dedicated menu
Peak deviation
:
±56 kHz for mono, ±48 kHz for stereo (preset mode)
NOTE: custom setting can set peak deviation from 2kHz to 100kHz
MPX Pilot tone
:
19kHz
Tone squelch
:
32.789Hz (for Wisycom wireless microphone, i.e. ENR/ENC)
131,8 (for Wisycom intercom, i.e. NR)
NOTE: custom setting can change the Tone squelch (30-260Hz and 28K-34KHz)
Frequency response
:
20÷20kHz (mono)
30÷15kHz (stereo)
NOTE: custom setting can change audio bandwidth (3/4/12/15/20kHz)
Analogue audio input
Connector type
:
XLR-3 / 1/4“ (6,3mm) jack combo socket, electronically balanced
Max. input level
:
+18dBu
Pin Assignments
:
XLR: 1=ground 2=hot 3 =cold
6.35mm (1/4”) TRS: Tip=hot Ring=cold Sleeve=ground
Digital audio input
Connection
:
AES3 on XLR-3M (32kHz ÷108 kHz)
Monitor output
Connector type
:
6.35mm (1/4”) jack socket, balanced
Monitor output level
:
max 240mW @ 150 ohm
Monitor out impedance
:
100 ohm for auricle
Compander
:
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-emphasys
NONE-d50, no compander, pre-emphasis 50 µs
NR, to work with Wisycom Intercom system
Other compander on request
Display
:
64 x 256 OLED (yellow)
Configuration/monitor
interfaces
:
10/100 Base TX Ethernet port on RJ45 connector
Power supply
:
90 - 264 V AC, 50/60 Hz
10 –16 VDC, Max 6A (option DCI952)
Dimensions
:
19”/1U 483 x 407 x 43,8 mm (WxDxH) with brackets