TELIKOU Intercom System MDS-400/BK

TELIKOU Intercom System MDS-400/BK
TELIKOU Intercom System
MDS-400/BK-2400
Wireless Intercom System
Instruction Manual
© 2006 TELIKOU Systems
All Rights Reserved
www.telikou.com
TELIKOU MDS-400 Wireless Main Station
I.
Introduction
Thank you for choosing TELIKOU Wireless intercom product.
1.1 Main Station
1)
Front Panel
1. Connector:
Headset:
Pin1, Pin2: Microphone balance input
Pin3, Pin4: Earphone balance output
2. Press Button:
Mic:
Headset Microphone ON/OFF switch
2W/4W:
2 wire/ 4 wire intercom connector selection switch
Aux.:
Aux Audio input ON/OFF switch
VOX:
Microphone Voice control function switch
CH1:
Wireless belt pack Channel 1 control switch
CH2:
Wireless belt pack Channel 2 control switch
CH3:
Wireless belt pack Channel 3 control switch
CH4:
Wireless belt pack Channel 4 control switch
3. Adjustment Knob
Aux. In Level:
Adjust Aux. input Audio signal level
Aux. Out Level:
Adjust Aux. output Audio signal level
Intercom In level:
Adjust intercom input connector audio signal level
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TELIKOU MDS-400 Wireless Main Station
Intercom Out level:
Adjust intercom output connector audio signal level
Mic Gain:
Adjust headset Microphone gain
Volume:
Adjust the headset audio
4. Switch
Power:
Main station Power switch
5. Indication Led Light
Power LED:
Power indication LED light.
ON: Power on,
OFF: Power off
4-wire LED:
4-wire device connector enable LED indicator.
ON:
4-Wire device connector is enabling
OFF: 4-wire device connector is disabling
2-wire LED:
2-wire device connector enable LED indicator.
ON:
2-Wire device connector is enabling
OFF: 2-wire device connector is disabling
CH1/2/3/4 LED:
1. Channel switch indicator.
On: Channel on
Off: Channel off
2. When channel switch is off, if main station detected any belt
-pack microphone is turned on, this indicator flash fast.
(1s on, 1s off)
MIC LED:
Main station headset indication LED light
ON:
Microphone on
OFF: Microphone off
VOX LED:
Microphone Voice control function Indication LED light
ON:
VOX function is on
OFF: VOX function is off
Aux. LED:
Auxiliary input indication LED light
ON:
AUX audio signal input is enabling.
OFF: AUX audio signal input is disabling.
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TELIKOU MDS-400 Wireless Main Station
2) Rear Panel
1. Connecting socket
4-wire Connector:
4-wire device connector XLR-4M.
(RJ11 and XLR-4M are parallel connected).
Pin1/Pin2:
Balanced audio input
Pin3/Pin4:
Balanced audio output
If this connector is XLR-4F.
Pin definition is as follow:
Pin1: Audio Input
Pin2: Input Ground
Pin3: Audio Output
Pin4: Output Ground
2-wire Connector:
2-wire device connector.
(XLR-3F and XLR-3M are loop through)
Pin1: Common
Pin2: null
Pin3: audio
Aux Audio In:
Aux input audio signal input connector
Pin1: Common
Pin2: audio +
Pin3: audio –
Aux Audio Out:
Aux output audio signal connector.
Pin1: Common
Pin2: audio +
Pin3: audio –
Antenna:
Power:
SMA antenna connector.
CH1, CH2:
Group B;
CH3, CH4:
Group A
Power connector. 18-24VDC, 3.0A
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TELIKOU MDS-400 Wireless Main Station
1.2 Beltpack
1. Press Button
MIC:
headset microphone switch
▲/▼:
2.
Switch
Power:
Power switch
VOX:
Microphone Voice control function (In battery case)
DYN:
3.
volume up and down
On:
VOX is enabling
Off:
VOX is disabling
Headset microphone type selecttion (In battery case)
Dyn On:
Microphone type is set as dynamic.
Dyn Off:
Microphone type is set as electret.
Indicator
Low battery
Green and red Bio-color LED light.
& Code LED:
1. Low battery:
Red lights on.
2. Code matching:
Green flash slow
3. Code Matching success:
Green lights on.
4. Code Matching failed:
Green lights off
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TELIKOU MDS-400 Wireless Main Station
5. Beltpack offline:
MIC LED:
Green lights off
1. Beltpack microphone indication light.
ON:
Microphone on
OFF:
Microphone off
2. When beltpack mic is off, if corresponding main station channel is
turned on, the beltpack MIC indication light flash fast.
4. Connecter
Headset:
Beltpack headset connector
(Both Microphone and earphone are balanced signal)
Pin1, Pin2: connecting Mic
Pin3, Pin4: connecting earphone
1.3 Explanation
II.
Flash Fast:
1S ON, 1S OFF
Flash:
2S ON, 2S OFF
Long Slow:
1S ON, 3S OFF or 3S ON, 1S OFF
OPERATION
MDS-400 main station
2.1 Talk operation
Turn on main station and beltpack, when they are connecting, the main station channel light
and beltpack code light flash (2S ON, 2S OFF). When the connection is successful, both lights
are constantly light green. The beltpack and main station are on standby mode.
Main station call
Under standby mode, press main station Mic button, the Mic light is on. Then press main
station channel button, the channel indication light is on. The corresponding beltpack Mic LED
flashes fast. It means there is a call from main station to belt pack. The beltpack is into
listening mode automatically. After single click beltpack Mic button, it changes from flashing to
constant on. Beltpack is on full-duplex mode. That is the beltpack can listen and talk at same
time.
Beltpack Call
Under standby mode, single click beltpack Mic button. The beltpack Mic LED is on. If
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TELIKOU MDS-400 Wireless Main Station
corresponding main station channel is off, the channel indication light flash fast. It means the
beltpack is calling. Press channel button, the flashing light becomes constant on. This channel
is entered monitoring status. If the main station Mic button is pressed ( Mic LED on), the
system becomes full duplex mode. The main station can talk point to point, or point to
multipoint.
When beltpack call main station, if main station doesn’t answer in one minute, the call will be
finished.
In both situations, external audio signal which is sent to main station by any connector can be
heard by both sides.
2.2 VOX function
Turn on VOX function, the VOX indication LED lights on as well. If audio signal which is
collected by main station microphone is over than the preset value, the microphone input
channel and indication light are turned on; If audio signal is not been detected or lower than
preset value in ten seconds ,the microphone input channel and indication light are turned off.
2.3 Volume adjustment
Turn up or down the audio level which heard by headset.
2.4 Connector
2-wire intercom connector
MDS-400 is default with 4-wire channel on. Press “Intercom” button, main station switch to 2wire channel and cut off 4-wire connector. Meanwhile the 2-wire indication light is on. Main
station can communicate full duplex with 2-wire equipment which connected by 2-wire
connector at rear panel.
2-wire connector definition:
loop through XLR-3M/F connector
Pin 1:
Common
Pin 2:
null
Pin 3:
Audio
Audio Level: 1Vpp
4-wire intercom connector
Press “intercom” button if 4-wire indication LED light is off. With 4-wire intercom channel, 2wire channel is cut off.
Main station can communicate with 4-wire equipment with full duplex
by 4-wire connector at rear panel. Main station is default with 4-wire intercom connector.
4-wire XLR-4M intercom line connector pin setting:
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TELIKOU MDS-400 Wireless Main Station
Pin1: Audio Input Pin2: Audio Input +
Pin3: Audio Output Pin4: Audio Output +
Audio Level: 1Vpp
Notes: If this connector is XLR-4F.
Pin definition is as follow:
Pin1: Audio Input
Pin2: Input Ground
Pin3: Audio Output
Pin4: Output Ground
Audio Level: 1Vpp
Aux. Audio Input Connector
Press “Aux. Audio In” button will turn on the “Aux. Audio In” channel and indication light. Press
“Aux. Audio In” button again will turn off the channel and light. When “Aux. Audio In” is on, the
main station can hear the audio signal inputted from this channel. The signal level is adjusted
by the auxiliary audio potentiometer.
XLR-3F connector. Balanced input.
Pin 1: Common
Pin 2: Audio +
Pin 3: Audio –
Audio level: 1Vpp
Aux. Audio Output Connector
Audio signal of main station outputs through AUX connector. Auxiliary output level adjustment
can adjust the output level.
XLR-3M, balanced output.
Pin 1: Common
Pin 2: Audio +
Pin 3: Audio –
Audio level: 1Vpp
2.5 Mic Gain
MIC gain adjustment can change headset microphone amplifying circuit gain to fit different
microphones.
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TELIKOU MDS-400 Wireless Main Station
2.6 Code Clearing and Code Matching
MDS-400 main station and BK-2400 beltpack have been matched at factory. But you may
need to do the “Code Clearing and Code Matching” sometimes.
Hold ”Aux. Input” button and turn on MDS-400 main station. Release ”Aux. Input” button after
“4-wire” indication light flash once. MDS-400 entered Code Clearing/Code Matching mode.
Code Clearing Operation
After enter Code Clearing/Code Matching mode, any channel (CH1, CH2, CH3, CH4)
indication LED lights on means that channel has code matching information. Be sure to clear
the code before do code matching. Press channel button to clear the code. If you want to clear
all 4 channel code in one time, press “Intercom” button.
Code clearing only can be operated on MDS-400 main station.
We strongly recommend you turn on the belt pack before Code Clearing.
1# and 2# beltpack match code
After entered Code Clearing/Code Matching mode, press “Aux. Input” button, CH1 indication
light flash slow (if 1#beltpack has done code matching, the CH2 indication light flash slow).
Hold 1# beltpack volume down “V” button and turn on the beltpack. The beltpack working
indication light flashes fast first, then become slow. Release the button, Code matching is in
process. If code matching is succeed, the channel light of main station and working indication
light of beltpack become flash constantly. (If failed, both LED are off).
To continue doing code matching for 2# beltpack, press “Aux. Input” again, CH2 light flash
slow, the code matching process is same as 1#. If code matching succeed, the light of main
station and 2# beltpack light flash constantly on.
Note: If code matching is not succeed for several times, please check all four antennas are
installed well. Turn on the beltpack power and redo the code clearing operation on main
station.
3# and 4# beltpack match code
After entering Code Clearing/Code Matching mode, press “VOX” button, CH3 indication light
flash slow( if 3# beltpack has finished code matching, CH4 will flash slow). The code matching
process is same as 1# and 2# beltpack. After 3# beltpack succeed in code matching, press
“VOX” button to continue with 4# beltpack code matching.
After code matching successfully, the channel light and beltpack working light are both on.
Turn off the main station and beltpack. Code matching has finished.
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TELIKOU MDS-400 Wireless Main Station
BK-2400 BELTPACK
3.1 Low Battery and Code Indication Light
Low battery and code indication light is bio-color LED light, low battery is red, code indication
light is green.
Code Matching
For details, please read item 2.6
Low Battery Indication
BK-2400 uses 3xAA size normal or chargeable batteries. If battery voltage is lower than 3.45V,
low battery indication lights red, remind change the battery in time.
MIC button and MIC LED
Turn on microphone, the green indication light is on. Indicates beltpack and main station is on
standby status.
Press beltpack ”MIC” button will turn on the microphone channel and MIC LED, press again
will turn off.
When belt pack detected the corresponding channel on main station is turned on. MIC LED
will flash fast, means the main station is calling.
3.3 Function setting
Open beltpack battery cover and take out battery, there is a double-digit dipper. They are VOX
and MIC gain setting switch.
VOX setting
When it is set as ON, MIC button can be controlled by voice. If audio signal which is collected
by main station microphone is over than the preset value, the microphone input channel is
turned on; If audio signal is not been detected or lower than preset value in ten seconds ,the
microphone input channel is turned off.
Set VOX dipper as OFF to disable the VOX function.
Mic Select
Set Dyn to “ON” position when use Dynamic microphone headset.
Set Dyn to “OFF” position when use Electric microphone headset.
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TELIKOU MDS-400 Wireless Main Station
Volume Adjustment
When beltpack working, press “ ▲ ” / “ ▼ ” to control audio level which hear in ear.
There are total 8 different audio levels. When beltpack on, the volume level is default set as
middle level (4th level). When the adjustment is reached maximum or minimum, headset can
hear two “beep” sounds.
4. Note

2.4GHz digital wireless signal is weak on penetration, so the beltpack and main station
should be placed on sight. If there is wall between beltpack and main station, antenna can
be put where beltpack can see it.

1#, 2# beltpack are same. They have no order to use with code matching.
3#, 4# beltpack are same. They have no order to use with code matching.
But 1# / 2# beltpacks cannot swap with 3# / 4# beltpacks.

The main station antennas are divided to group A and B. Every group has 2 pcs same
antennas. Group A and B antennas SMA socket are different. They cannot swap.
Channel 1, 2 corresponds to group B antenna. Channel 3, 4 corresponds to group A
antenna.

Beltpack battery voltage effects system sensitive.
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