Telikou UTS-200 User manual

TELIKOU Intercom System
UTS-200 Two-Channel Speaker Station
Instruction Manual
© 2006 TELIKOU Systems
All Rights Reserved

TELIKOU UTS-200 Two-Channel Speaker Station
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I. Introduction
Thank you for choosing TELIKOU intercom product. The UTS-200 Two-channel main
station is a powerful, yet user friendly unit that server as a heart of a TELIKOU intercom
system. We recommend you read through this manual to better understand the function
of UTS-200. If you have any question that does not addressed on this manual, please
contact your dealer or call us. We are standing by to assist you.
Description
The UTS-200 suits for TV station, communication command center, outside broadcast
vehicle, theater, project test field, and other applications which communication is required.
This system adopts wired connection, and has following features, free of external
emission interference, stable and reliable performance, flexible configuration, full-duplex
communication, clear and loud communication sound, easy operation, and strong noise
resistance.
II. Characteristics
All operations can be finished on panel easily.
Remote Microphone kill Switch (RMK).
The level of speaker will lower when talk button is activated.
XLR and 1/4 inch compatible microphone jack.
Automatic circuit short protection and indication.
Sidetone Null adjustment.
III. Basic operations

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Front Panel
1. Headset connector
4-pin XLR Male or 5-pin XLR female connector.
EARPHONE: Dynamic 50-2000 ohm
MICROPHONE: Dynamic 100-600 ohm
The wiring of headset to be as follow:
Pin 1--Mic common
Pin 2--Mic hot
Pin 3--headphone common
Pin 4--headphone hot
Pin 5—Null
2. Panel Mic Connector
This is a double-purpose connector, supports both of unbalanced input microphone with
XLR plug and 1/4inch plug.
The wiring of 3-pin XLR microphone to be as follow :
Pin 1 -- Mic common
Pin 2 -- Mic hot
Pin 3 -- parallel connected with Pin 2 internal
3. Mic Select Switch
Set the Mic select switch to select whether the panel microphone or the headset
microphone is active.
4. Panel Mic Gain
It is used to increase or decrease the gain for panel microphone to achieve proper
microphone output level. It has no effect on the sensitivity of the headset microphone.
Note: For earlier models, this adjustment button is in cabinet, and you can find this
adjustment potentiometer at the right side of front panel after opening the top cover of
cabinet. The microphone is set according to the Electret type before delivery. If the type
of panel microphone is changed, re-adjustment is required.
5. Mic Switch (Mic)
Turn up or down the Mic switch handle will send microphone signal intercom line after
amplification. When the switch is turned to ON or PTT, the LED (6) above will light. The
settings are as follow:
ON: The selected microphone is activated, the switch is self-locked.

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OFF: The selected microphone is off.
PTT: The selected microphone is activated, release and reset.
6. Mic LED
This LED lights when Mic switch (5) turns to ON or PTT.
7. Call Switch
Send call signal from host to the channel. Turn up or down the handle of call switch, the
LED (8) above selected channel will light (RED). This switch is without self-locking
function, release and reset.
8. Call LED
This LED will light under two cases: a) called: when the call signal from communication
channel is received; b) call: the call switch (7) is turned on.
9. Power Switch
Power switch is turned on, Power LED (10) light.
10. Power LED
This green LED lights on when the UTS-200 is receiving AC power. This LED will flash
when the UTS-200 senses a short or overload on the circuit. When the fault is removed,
the power supply will automatically reset and LED
11. Sidetone zero-adjusting
The UTS-200 uses full-duplex audio (the same as a conventional telephone line) in which
the talk and listen audio are sent and received on the same line. Thus, when you talk on a
channel, you will also here your own voice back in the speaker or headphones. This is
called sidetone. If you are using the UTS-200 with a microphone and speaker, sidetone
could cause unwanted feedback, since the microphone may pick up your returned voice
audio and reamplify it. This could also happen if you are using a headset where the ear
cushions do not completely cover the ears, although it is probably much less likely. In
either of these cases, you should minimize the amount of sidetone.
Typically, different sidetone null settings are needed depending upon whether you are
using the gooseneck panel microphone along with the speaker or not. Use one the
following procedures to correctly set the sidetone level controls.
A) Sidetone Adjustment Procedure for Gooseneck Microphone with Speaker turned
on:
1 Turn on the Mic switch. Set Mic select switch to panel.

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2 Turn the level control to a comfortable level.
3 Speak into the microphone while turning the sidetone null control slowly back and forth.
There should be a point where your voice (and any accompanying acoustic feedback) is
the lowest. This is the null point.
B) Sidetone Adjustment Procedure for Headset:
1 Turn on the Mic switch. Set Mic select switch to headset.
2 Turn the level control to a comfortable level by having someone talk to you from another
station.
3 Speak into the microphone while turning the sidetone null control slowly back and forth.
There should be a point where your voice (and any accompanying acoustic feedback) is
the
lowest. This is the null point.
C) System Sidetone Adjustment
1 Turn off all the microphones on sub-stations and belt packs.
2 Followed by A) and B), adjust sidetone on MS-800 main station.
3 Turn on the microphone on sub-station and belt packs one by one, and then adjust the
Sidetone to satisfied level
12. Remote Mic Kill Switch (RMK)
The Remote Mic Kill (RMK) switch will turn off the microphone of every beltpack remotely.
If the Talk Functions of a large number of beltpacks have inadvertently been left activated,
incidental noise and talking can make it difficult or impossible to communicate on the
intercom system. The Remote Mic Kill switch can be pressed to quiet the line in this
situation.
Notice: if any beltpack microphone within intercom line can be turned off in remote way,
each powered working station within this intercom system must be interconnected via
online interface on its rear panel.
13. Listen Level Control
Turn this control to set the listen level of received audio signal within communication
system. It adjusts listen level of headset and speaker. Turn the control completely
counterclockwise to silence the channel.
14. Channel Switch
Channel switch is used to select the communication channel.
Rear Panel

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15. Intercom Line connector
3-pin XLR female socket, eight interfaces corresponding to eight channels; The pinout of
the intercom connectors is as follows:
Pin 1 --- Common (Shield)
Pin 2 --- Power (+24 VDC)
Pin 3 --- Audio
16. Termination switch
When this switch is turned to ON position, one 220 ohm termination resistor will be
connected to intercom line. If the intercom system is not terminated, the level of intercom
line will be too high, and the system stability will be influenced. However, only one
termination point is allowed within same intercom line. If multiple termination points are
used incorrectly, the driving load will be aggravated, and the level of intercom line will be
too low.
This switch is set to ON position by factory default. Before using, you should set it to ON
or OFF position according to the actual connection of intercom line.
17. Online Connector on Channel A
It is used for Online connection among TELIKOU working main stations.
The pinout of Online Connector is as follows:
Pin 1 --- Common (Shield)
Pin 2 --- Control Signal
Pin 3 --- Audio Signal
Notes: Connect To Switch (19) must be set correctly before use. Otherwise the system
will not work properly.

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18. Connect To Switch with Channel A
To achieve Mic on the belt packs can be turned off by RMK function. All the TELIKOU
main stations in the system must be connected by the Online connector which is on the
rear panel. And Connect To switch turns to ‘ONLINE’position. Otherwise, RMK switch
can not function on those belt packs which are connected to Channel A.
If UTS-200 must be connecting to Intercom Line on Channel A, Connect To switch need
turns to ‘INTERCOM LINE’ position. Otherwise UTS-200 can not work properly. And RMK
switch can not affect belt packs on Channel A.
19. Online Connector on Channel B
It is used for Online connection among TELIKOU working main stations.
The pinout of Online Connector is as follows:
Pin 1 --- Common (Shield)
Pin 2 --- Control Signal
Pin 3 --- Audio Signal
Notes: Connect To Switch (21) must be set correctly before use. Otherwise the system
will not work properly.
20. Connect To Switch with Channel B
To achieve Mic on the belt packs can be turned off by RMK function. All the TELIKOU
main stations in the system must be connected by the Online connector which is on the
rear panel. And Connect To switch turns to ‘ONLINE’ position. Otherwise, RMK switch
can not function on those belt packs which are connected to Channel B.
If UTS-200 must be connecting to Intercom Line on Channel B, Connect To switch need
turns to ‘INTERCOM LINE’ position. Otherwise UTS-200 can not work properly. And RMK
switch can not affect belt packs on Channel B
21. AC Power Connection
Voltages from 90 to 240 VAC at 50 or 60Hz are acceptable. The power consumption is
less than 45VA.
IV. Installation and cable
1. Installation
UTS-200 main workstation is 273mm wide, 88.5mm high and 215mm deep. And this
workstation can be mounted on rack or placed on desktop. If it is placed on desktop, it is
required to adhere 4 rubber foot pads provided with machine to four corners at the bottom
of cabinet with double-face adhesive tape.

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2. Intercom cable
A). Rules for cable selection
TELIKOU intercom system adopts double-core shielded audio cable, one core is used for
transmitting audio signal, another core is used for transmitting DC power or control signal,
and the shielded layer is used as common line for audio and power supply. To decrease
resistance of common line and crosstalk interference, the cable with larger cross section
area should be used. When it is used in fixed way, the cross section area of single line
should be at least 1.5mm2, when it is used in mobile mode, the cross section area of
single line should be at least 0.75mm2. When the cable is longer, the cross section area
of cable should be larger. If the cable has more than 2 cores, it is recommended to use
the additional core as common line.
B). Cable connection
The standard TELIKOU intercom cable is connected with a pair of 3-pin XLR connectors,
one male and one female. If longer cable is required, you can connect several cables
together with head-end method.
The wiring of connector is as follows:
Pin 1 --- Common (Shield)
Pin 2 --- Power or Control Signal
Pin 3 --- Audio Signal
Notice: the pin-1 GND connection for each XLR connector must be insulated from
cabinet, and cannot be connected to shell of XLR connector.
V. Troubleshooting
Problem: Power LED wink
Cause 1: Direct short on the intercom channel
Solution 1: Remove all the intercom cables from UTS-200. Check each channel one by
one, until find the short channel.
Cause 2: Overload
Solution 2: Decrease the amount of remote stations.
Problem: System feedback (Acoustical)
Cause 1: Listen level control at this station or a remote station is set too high
Solution 1: Adjust

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Cause 2: Sidetone null control at this station or a remote station is not adjusted correctly
Solution 2: Adjust. Refer to the procedure in the Front Panel section of this manual.
Cause 3: Channel unterminated.
Solution 3: Set the UTS-200 termination switch to the ON position.
Cause 4: A headset cord is too long or jointing quality .
Solution 4: Check headset cord
Problem: Excessive crosstalk
Cause 1: High DC resistance in ground return.
Solution 1: Use heavier cable; add additional conductor(s) to ground return.
Cause 2: Headset cables are not wired properly or shielded properly.
Solution 2: Correct wiring. Use headsets with properly shielded wiring.
Problem: Hum or buzz in system
Cause 1: Inductive pickup caused by close proximity of this main station or connected
remote stations to power lines or transformers.
Solution 1: Relocate the offending unit.
Cause 2: Intercom line cable is not wired properly; the shield of microphone cable is not
connected to Pin-1 of 3-XLR
Solution 2: Check intercom line cable. Make sure all the cables’ Pin-1 of 3-XLR connects
correct.
Cause 3: 10 Ohm chassis ground resistor is open.
Solution 3: Bridge a 10 Ohm resistor between system ground (G) and earth ground ( )
of any power supply.
If this condition occurs, it is because the system ground came into contact with
something that was "HOT" with respect to the power supply earth ground.
Carefully check the system ground and AC distribution in the area.
WARNING: THIS IS A POTENTIALLY DANGEROUS SITUATION. A SHOCK HAZARD
MAY EXIST BETWEEN A REMOTE STATION HEADSET AND GROUND.

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Problem: Can not turn on the Mic function on all the beltpacks
Cause: The connection among TELIKOU main stations better go via Online connector on
rear panel. The Online connector connected on this station connects to the Intercom Line
connector on another station. But Connect To switch set to ‘ONLINE’ position.
Solution 1: Reconnect by Online to Online.
Solution 2: Set Connect To switch of working channel to ‘INTERCOM LINE’ position.
(Especially UTS-200 connects to no TELIKOU main station)
Problem: Can not turn off the Mic function on all the beltpacks after pressing RMK
button
Cause 1: The connection among TELIKOU mains stations must go via Online connector.
If main stations are connected by Intercom Line connector, RMK function will not work
properly.
Solution 1: Check the connection among main stations. Please use Online connector.
Cause 2: TELIKOU main stations are connected with Online connector. But Connect To
switch is set to ‘INTERCOM LINE’ position.
Solution 2: Check Connect To switch, set it to the proper position.
Cause 3: Some main stations are not TELIKOU. So these main stations do not have
Online connector. The connections among these main stations are with Intercom Line
connector.
Solution 3: Change to TELIKOU main station.
VI. Technical Specification
PRE-AMP:
Microphone impedance: Dynamic 200ohm
Gain form Mic to intercom line: +49dB
Bandwidth: 40Hz-8000Hz ±2dB
POSTPOSITION-AMP:
Load impedance: 50-2000ohm
Output level: +17dBv
Distortion: <0.1% (1000Hz)
Gain from line to output: +31dB
BANDWIDTH:
200Hz-800Hz ±2dB
SIDETONE:

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Adjustable range: -40dB, 32dB
EARPHONE:
Dynamic 50-2000 ohm
MICROPHONE:
Dynamic 100-600 ohm
CONNECTOR:
Panel Mic connector: ø6.35mm/XLR-3F
Pin 1 -- Mic common
Pin 2 -- Mic hot
Pin 3 -- parallel connected with Pin 2 internal
.
Headset connector: XLR-5F
Pin 1--Mic common
Pin 2--Mic hot
Pin 3--headphone common
Pin 4--headphone hot
Pin 5—Null
Intercom cable connector: XLR-3F
Pin 1 --- Common (Shield)
Pin 2 --- Power (+24 VDC)
Pin 3 --- Audio
Online Connector: XLR-3F
Pin 1 --- Common (Shield)
Pin 2 --- Control Signal
Pin 3 --- Audio Signal
POWER SUPPLY:
AC 90-260V, 50-60Hz, <45VA
Output voltage: 24V DC,
ENVIRONMENTAL:
0°- 70°C（32°-158°F ）
DIMENSION:
10.75” (W) x3.48” (H) x8.46” (D), 273mm x 88.5mm x 215mm
WEIGHT:
2.6kg