Wisycom MTK952N-2W0 User Manual

MTK952 User Manual

Dual Transmitter

Mono - Stereo - Intercom
Modulation

SN: ________________

rev.06 (ref. FW 2.0)

Date: 10 April 2015

MTK952 User Manual

rev.06

1

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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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

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 (N connectors for MTK952N) (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,

7. Enter in the MAIN>Ch-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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A

B

C

D

E

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. The SCAN function allows to
display the results of a scan previously done from a MPR30 and set a frequency on the receivers.

B and C - TRANSMITTER1 and TRANSMITTER2

Transmitter 1 and 2 configuration and monitor
of radio/audio levels.

❶ Audio 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)

❷ LCD display.(64 x 254 yellow-lighted display)

❸ 3 push buttons (membrane). The function of each button (upper, middle and lower) will be

readable from the context menu on the display.

❹ Push rotary knob. Rotate and push to select.

❺ Warning (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.

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❶ ❷❸❹ ❺❻ ❼ ❽ ❾ ❿ ⓫ ⓬ ⓭

❶ ❷❸ ❹ ❺❻ ❼ ❽ ❾ ❿ ⓫ ⓬ ⓭

REAR PANEL

MTK952N ⓮ ⓯

MTK952

❶ AC Power Plug AC mains power input, IEC Connector 90-264 Vac

❷ Product label with Serial Number, Options and Bandwidth

❸ Ground point To connect the rack to ground

❹ DC Power Plug (optional) DC power input, 10-16Vdc, Max 7A

❺ label with IP address of Ethernet interface configured on the MTK952 (it can be modified using

the Manager application)

❻ Ethernet socket (RJ45) for connection to a network or computer

❼ AES/EBU (XLR 3 pin connector) for digital audio input TX1 and TX2

❽ Antenna output TX2 (RF output) BNC socket (N socket for MTK952N)

❾ Audio input left TX2 (balanced AF input) ¼” (6,3mm) jack/XLR-3 combo socket and ¼” jack

❿ Audio input right TX2 (balanced AF input) ¼” (6,3mm) jack/XLR-3 combo socket and ¼” jack

⓫ Audio input left TX1 (balanced AF input) ¼” (6,3mm) jack/XLR-3 combo socket and ¼” jack

⓬ Audio input right TX1 (balanced AF input) ¼” (6,3mm) jack/XLR-3 combo socket and ¼” jack

⓭ Antenna output TX1 (RF output) BNC socket (N socket for MTK952N)

⓮ M-S input/output connector TX2 (optional) for Master-Slave option, BNC socket

⓯M-S input/output connector TX1 (optional) for Master-Slave option, BNC socket

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Display of TRANSMITTER 1

Display of TRANSMITTER 2

❶ product and bandwidth
❷ serial number
❸ class and hardware version
❹ Firmware 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, the
installed options and the companders.

Option:

- W05 / 0W2 /2W0 are the commercial codes to

identificate the max power transmitted
(50/2000/2000mW)

- DC indicate that the DC option (for DC power
supply) is installed

- MSB indicate that the Master-Slave board is
installed (MS option)

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:

Status screen

After switch on, the transmitters display the Status screen

The main view has the following info:

❶ transmitter name
❷ current channel number and current tuning frequency
❸ current group number and group name
❹ current mode
❺ TV channel used for the current frequency
❻ current TX power setting
❼ current SWR (Stationary Wave Ratio)
❽ power supply type ( for AC power for DC power)
❾ menu

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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*

1

Depending on the customization

*

2

Only with a Mode “mono”

*3 +3v3 for MTK952 “old version”

Only for MTK952N with M-S option

Only with option 2W0

MENU TREE

Group name

TX on air at

TX Power 10/20/ 30 /50 / 75 /100/ 150 /200 /250/400/500/750/1000/1200/1500 /2000 mW

EXT ATT compens.

Audio source

MAIN

Equalizer

Options

configuration

Ch-Gr

Mode

startup

TX

CH: 00 ÷ 59 GR: 00 ÷ 39

Frequency: 470÷800 MHz

ENR-Wisy Stereo / EVO Stereo / ENC-Wisy Stereo / SR Stereo / ENR-

Wisy / ENC-Wisy / IFB-Wisy/ EVO / SEN / SEN -d0 / COM-Wisy 25K /

COM-Wisy 20K / COM-Wisy 12K5 / USER 1..7 / *1

Yes / No

enable / disable

Input Analog / digital

Max audio level

Audio gain left -20 ÷ 24 dBµ

Audio gain right -20 ÷ 24 dBµ

AF level meter input / modulation

Mono config *2 mono/mono-R / mono-L

Auto switch DIG->AN

Bass

Mid

Treble

SAVE/NEXT/ EXIT

Name

DISPLAY brightness 0 ÷ 15

DISPLAY timeout 5 ÷ 120

Power profile

Info…

master/slave

-6 ÷ 18 dBµ

enabled / disabled

G: -12 ÷ 12 dB

Fr: 40 / 80 / 160 Hz

G: -12 ÷ 12 dB

Fr: 1.5 / 2.2 / 2.8 KHz

Q: 0.7 / 1.0 / 2.0

G: -12 ÷ 12 dB

Fr: 5.0 / 7.0 / 10.0 KHz

IP

Serial

Option

Range

Temperatures

FW

Supply diagnostic

Alarms

RF amplifier

RF generator

Micro

Power supply

FW ver

Boot ver

App FW ver

DSP FW ver

Neg Audio (-12v5)
Pos Audio (+12v5)

RF conv. (+5v)

RF amplif. (+3v3)

MicroP. (+5v)

MicroP. (+8v)*3

Main RAW (+12v)

PLL tune (+22v)

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② ①

Name

Select for edit

Mono/stereo

Compander

HP filter

MODE

LP filter 3 / 4 / 12 / 15 / 20 KHz

Pre-emphasis Bypass / 10-750 µs

FM peak deviation 2 ÷ 100 KHz

TSQ frequency

TSQ deviation OFF / 100 Hz ÷ 5 KHz

Flat / 20 /40 / 60 / 80 / 120 /

170 / 250 / 300 HZ

30 ÷ 260 HZ
28 ÷ 34 KHz

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).

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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).