RELACART WDC-900 User manual

Operating Instructions
WDC-900

●Should the following irregularity be found during use, immediately switch off the power, take the batteries out of the
unit, and keep them away from fire. Failure to do so may cause fire or explosion.
-If you find battery leakage, discoloration, deformation or damage.
-If you detect smoke or a strange smell coming out from the batteries.
●Do not deform, modify, or solder the batteries. Doing so may damage the battery’s safety or protector mechanism,
causing the batteries to fire, leak, or explode.
●Never short the positive and negative terminals with a wire or other metallic objects. Also, avoid carrying or keeping
the batteries with metallic objects such as necklaces or hire pins. Doing so may cause the batteries to fire, explore, leak,
or heat.
●Never heat the batteries nor throw them into a fire. Doing so may damage to the battery’s gas relief valve or safety
mechanism, causing the batteries to fire or explode.
●Do n ot dip t he batteries into w ater nor wet the battery terminals. This may corrode the batteries, possibly causing them
to fire, explode, leak, or heat.
●Note correct polarity (positive and negative orientation) when inserting the batteries into a battery charger. Doing
otherwise may cause them to fire, explode, leak, or heat.
●Be sure to use the RC-10 charger when recharging the batteries. Using other battery charge may cause them to fire,
explode, leak, or heat.
●Use the batteries only with equipment specified. Failure to do so may case the batteries to fire, explode, leak, or heat.
●Do not drop the batteries nor give them a shock. Doing so may damage the battery’s safety or protector mechanism,
causing the batteries to fire, explode, leak, or heat.
●There is a fear of loosing one’s eyesight if a battery leakage gets in one’s eyes. Wash it away with clean water and
consult a doctor immediately. If a battery leakage stains or clothes, wash it away with clean water as there is a fear of
impairing the skin.
Safety Precautions
1.Safety Precautions……………………………………………………… ……P2
2.General Description………………………………………………………………………………………….P4
3.Features…… … … … … … … … … ………………………………………………………………… … … … … P 5
3.1Central Controller Unit WDC-900M………………………………………………………………….P5
3.2Chairman Unit WDC-900C……………………………………………………………………………P7
3.3Delegate Unit WDC-900D…………………………………………………………………………….P9
4.Operation and Functions Settings…………………………………………………………………………P11
4.1Initiating System…………………………………………………………………………………………P11
4.2WDC-900M Functions Settings……………………………………………………………………..P11
4.3WDC-900M Menu Displays………………………………………………………………………….P16
5.Optional for Automatic Video Tracking System VTS-1000…………………………………………….P17
5.1General Description…………………………………………………………………………………….P17
5.2Features………………………………………………………………………………………………….P17
5.3VTS-1000 Functions Settings…………………………………………………………………………P20
5.4VTS-1000 Menu Displays………………………………………………………………………………P24
6.Installation and Connections………………………………………………………………………………P25
6.1System Connection Examples…………………………………………………………………………P25
6.2Notes on Installation of the Antennas…………………………………………………………………P26
6.3Antennas Installation Examples………………………………………………………………………P27
7.Acce s s o ries…………………… … … ………………………………… … … ……………………………… P 2 8
7.1Antenna R-2.4C / R-2.4B……………………………………………………………………………….P28
7.2Charging Case RC-10N / RC-20N……………………………………………………………………P29
8.Specifications…………………………………………………………………………………………………P31
………………………………
Table of Contents
Thank you for choosing Relacart’s Wireless conference System.
Please carefully follow the instructions in this manual to ensure durable, trouble-free use of your equipment. Applicable to Ni-NH(AA) Battery

P3 P4
Applicable to Central unit, Chairman unit, Delegate unit, Battery Charger, and AC adapter
•
•When unplugging the power supply cord, be sure to grasp the power supply plug; never pull on the cord
itself. Operating the unit with a damaged power supply may cause a fire or electric shock.
•When moving the unit, be sure to remove its power cord from the wall outlet. Moving the unit with the power
cord connected to the outlet may cause damage to the power cord, resulting in fire or electric shock. When
removing the power cord, be sure to hold its plug to pull.
•Do not block the ventilation slots on the unit. Doing so may cause heat to build up inside the unit and result in
fire.
•Avoid installing the unit in humid or dusty locations, in locations exposed to the direct sunlight, near the
heaters, or in locations generating sooty smoke or steam as doing otherwise may result in fire or electric
shock.
•Do not place heavy objects on the unit as this may cause it to fall or break which may result in personal injury
and / or property damage. In addition, the object itself may fall off and cause injury and / or damage.
•If dust accumulates on the power supply plug or in the wall AC outlet, a fire may result. Clean it periodically.
In addition, insert the plug in the wall outlet securely.
•Switch off the power, and unplug the power supply plug from the AC outlet for safety purposes when
cleaning or leaving the unit unused for 10 days or more. Doing otherwise may cause a fire or electric shock.
Never plug in nor remove the power supply plug with wet hands, as doing so may cause electric shock.
General Description
Designed to the most flexible discussion system available, RELACART has built on the elegant design to create a new
series of digital and wireless discussion units with unrivaled features.
Operating in 2.4GHz (license free) band and Zigbee wireless communication technology ,the digital and wireless
discussion units produce high quality CD sound due to a very high fidelity circuit design. The system is protected
against interference from other wireless equipments such as computers, mobile phones and blue-tooth devices. All
signals within the WDC digital and wireless system are digitally protected against tapping or eavesdropping.
Set up easily and quickly with no impact on location, especially for historical locations, the benefits can be even more
pronounced. One no longer has to worry about the damaging antique materials of a grand hall. No cables have to be
laid or holes drilled, the RELACART WDC wireless discussion systems offer a professional and perfect solution for
challenging locations.
•Zigbee wireless communication technology
•Control for up to 273 wireless discussion units and 2 chairman units, up to open simultaneous 4 discussion units.
•Absolutely safe, all signals within the WDC digital and wireless system are digitally protected against tapping or
eavesdropping.
•Adjustable sensitivity for audio inputs and outputs.
•Earphone monitor function.
•Audio insertion facility to connect external audio processing devices or telephone couplers.
•19”(2U) housing for table top or rack mounting
•Handgrips for easy transport.
•Bright LCD display operation screen, with Chinese and English Language menu for choose, perfect function and easy
operation.
•Perfect sound quality as CD from the microphone.
•The system is perfectly protected against interference from other wireless equipments such as computers, mobile
phones and blue-tooth devices.
•Easy to setup a system for usage limited in time, no impact on furniture, interior equipment or building structure
•Optional for Automatic Video Tracking System VTS-1000 for automatic camera tracking.
•Three operational microphone modes:
---IN TURN: (with limited time): Allow one speaking unit only, and can set the microphone to open 0S to 999S, when the
limited time is reach, subsequent microphone speaks.
---APPLY：The operation of delegate unit should be approved by chairman unit or operator.
---FIFO: First-in / First-out priority: When the maximum number of speakers is reach, subsequent Talk key units with
override of activated microphones.

P5 P6
Features
3.1 Central Controller Unit WDC-900M
Front Panel Rear Panel
WDC-9 00M
ONL INE : 006 I NFO
SPE AKER : 0 01 IN FO
①
②Receiving Antenna Input Jack A/B (BNC Jack): Attached the antenna directly.
③Data connection Antenna input jack: Attached the antenna directly.
④2 RCA Audio Line Output: Can be connected to mixer or MD recorder.
⑤Balanced Output Jack: XLR type connector. A standard 2 conductor shielded cable can be used to connect the
receiver output to a balanced microphone level input on a mixer or integrated amplifier.
⑥Unbalanced Output Jack: 1/4”(6.3mm) phone jack. Can be connected to an aux-level input of a mixer, guitar amp or
tape recorder.
⑦RS-232 Jack: Can be connected to Automatic Video Tracking System VTS-1000 or the other control systems.
⑧USB jack: connect to computer.
Power Input: IEC type connector for 90V/240V 50/60Hz 20W without user adjustment.
①Power Switch, setting this switch to the ON position cause the Power indicator to light.
②LCD displays operating status.
③Operation keys.
④Headphone jack (Mini-jack).
⑤Headphone volume control.
23
45 6 7 8
2

P7 P8
3.2 Chairman Unit WDC-900C
[Top] ①Microphone in-use indicator: Lights when the
microphone is turned on (for speech) and flashes when
the battery level is low.
②Microphone: Use either standard length 420mm or
longer dedicated microphone.
③LCD Window: Liquid Crystal Display indicates control
setting and operational readings such as working status,
operational mode and time, signal strength, battery
condition, etc.
The window lights when there is a “applying” from the
delegate unit.
④A: Talk key: When this key is pressed, the Microphone
In-use indicator (①) lights, and the microphone turns on.
Pressing this key again extinguishes the indicator and
turns off the microphone.
Note: If Central unit is power off, even Talk key is
pressed, the Microphone In-use indicator does not light,
the microphone still turn off.
B: Approval Key: To approve the applying unit to speak
when in APPLY mode.
⑤A: Priority speech key: Press this key continuously
while speaking.
The microphone turns on and the Microphone In-use
indicator (①) remains lit as long as the key is held down.
Allowing the voice input from the unit to take precedence
over other units. During this interval, other Delegate
units cannot be used.
B: Reject Key: To reject the applying unit to speak when
in APPLY mode.
WDC- 900C
Wireless Di scussi on Confer ence sy stem
5
4
3
[Bottom] [Rear]
⑥AA battery compartment Install AA Battery in this
compartment.
⑦
to switch on the power, while in 3 seconds
the power will be off.
Power switch: Press switch in 1 second
7
6

P9 P10
3.3 Chairman Unit WDC-900D
[Top]
①A: Microphone in-use indicator: Lights when the
microphone is turned on (for speech) and flashes when
the battery level is low.
B: This indicator also flashes when the unit is applying to
speak.
②Microphone: Use either standard length 420mm or
longer dedicated microphone.
③LCD Window: Liquid Crystal Display indicates control
setting and operational readings such as working status,
operational mode and time, signal strength, battery
condition, etc.
④Talk key: When this key is pressed, the Microphone In-
use indicator (①) lights, and the microphone turns on.
Pressing this key again extinguishes the indicator and
turns off the microphone.
Note: If Central unit is power off, even Talk key is
pressed, the Microphone In-use indicator does not light,
the microphone still turn off.
[Bottom] [Rear]
WDC- 900C
Wireless Di scussi on Confer ence sy stem
4
3
⑥AA battery compartment Install AA Battery in this
compartment.
⑦
to switch on the power, while in 3 seconds
the power will be off.
Power switch: Press switch in 1 second
7
6

P11 P12
Operation and Function Settings
4.1 Initiating System
Before turn on the Central Controller WDC-900M, please make sure every speaking unit is switched ON, and
every Power indicator lights.
4.2 WDC-900M function Settings
4.2.1, Make sure every speaking unit is switched ON, then turn on WDC-900M, the system will search the Online
users, and display on the LCD the ONLINE units. SPEAK units, REGESTERD units, IN LINE units and NO
POWER units.
4.2.2, Or press “SEARCH” key, the system will automatically enter self test, then display the status on the LCD.
WDC-900M
ONLINE : 006
SPEAKER INFO : 001
INFO OPTIONS MENU
05
WDC-900M
ONLINE : 006
SPEAKER INFO : 001
INFO
4.2.3, To check the display information are correct, then setup the other functions. If it is found the discrepancy, please
double check every speaking unit is switched on, or restart the system for searching again.

② APPLY：The operation of delegate unit should be approved by chairman unit or operator, and just allow to open
simultaneous 1 Chairman unit and 1 delegate unit
IN TURN
IN LINE
SPK TIME
4.2.4. Press “OPOTION MENU” into main menu.
1), MODE,
Three operational microphone modes:
① IN TURN (with limited time): Allow one speaking unit only, and can set the microphone to open
SPEAK TIME 0S to 999S, when the limited time is reach, subsequent microphone speaks.
LCD on each unit shows “request list”, “TIMER” and the limited speaking time.
Press IN TURN to run this speak mode.
IN LINE show how many units are in this run.
SPK TIME to set the speak time for the delegate units.
APPLY
APPROVAL
APPD SEC
Press APPLY to run this speak mode.
APPROVAL shows YES or NO
Ⅰ, Selecting “NO”, the applying unit needs to be approved by Chairman unit within waiting time “APPLY SEC”.
Ⅱ, Selecting “YES”, if there is no action from Chairman unit (approval or reject) within waiting time “APPLY SEC”,
operator setting admits that the applying unit is approved to speak.
APPD SEC to set the time in which delegated should be approved or not.
Chairman unit – The microphone always turns on, when there is a unit applying to speak, the LCD backlight is flashing,
and displays “Requ” (requesting).
Delegate unit – When the unit is applying to speak, Letter “Idle” on LCD changes to “Requ” (requesting), and
displays “wait”. If approval, “wait” disappears, the LCD backlight flashes in 5 seconds and the microphone turns on;
If reject, “wait” disappears, the LCD displays “NO”, and the backlight flashes in 5 seconds.

③ FIFO: First-in / First-out priority: When the maximum number of speakers is reach, subsequent Talk key units
with override of activated microphones.
LCD on each unit shows “active Mics” (active microphones) and the numbers of speaking units.
NO TE: The unit will turn off automatically in 10 seconds if it is outside the communications service area (no signal
available).
4.2.5, REGISTER: All the discussion units can only be used after registered.
Please DEFAULT SET before register of any new speak units, and please note that the DEFAULT SET will delete
all current system data such as your pre-set registered units, speak mode, speak time etc.
4.2.6, CHANNEL: Select channel by auto or manual.
4.2.7, LANG: Choose language. CHINESE OR ENGLISH
4.2.8, DEFAULT SET: To set the WDC-900M back to factory settings.
4.2.9, SQ: To change SQ level.
4.2.10, UNITS OFF: To turn off all the discussion units by one key.
4.2.11, UNIT OFF MODE:
1), ON: Selecting “ON”, the discussion units still power on even the central controller turns off.
2), OFF: Selecting “OFF”, the discussion units turn off while the central controller turns off.
4.2.12 SPEAKER: Display the numbers of speaking units.
NO TE: Any new settings only function after restart the WDC-900M central controller.
4.3, WDC-900M Menu Displays
OPTIONS MENU
MODE
IN TURN
APPLY
IN TURN
IN LINE
SPK TIME
APPLY
APPROVAL
APPD SEC
FIFO
REGISTER
CHANNELS
SCAN
MANUAL
LANG
CHINESE
ENGLISH
DEFAULT SET
SQ CURR SQ
UNITS OFF
UNITS OFF MODE
SPEAKERS

5.1 General Description
Video tracking system VTS-1000 cooperates with RELACART conference system: immediate display of speaker’s
image, appropriate for video recording. Unique frozen image and OSD functions ensure perfect automatic video
tracking.
•Rapid switch between several cameras and video signals.
•Control for up to 3 cameras.
•Unique frozen image function: any useless pictures will not be displayed (e.g. pictures caught by the camera’s quick
movement).
•OSD functions: display the information at the prearranged place.
•Compatible with cameras from different brands.
5.2 Features
Optional for Automatic Video Tracking System VTS-1000
①Power Switch, setting this switch to the ON position cause the Power indicator to light.
②LCD displays operating status.
③Operation keys.
Front Panel
VTS-1000
P17 P18

①Power Input: IEC type connector for 90V/240V 50/60Hz 20W without user adjustment.
②RS-232 Jack: Can be connected with RELACART conference system.
③RS-485 Jack: Can be connected with camera.
④S-VIDEO IN Input Jack: Can be connected with camera, and control for up to 3 cameras (Or optional for
CVBS IN Input Jack).
⑤CVBS IN Input Jack: Can be connected with camera, and control for up to 3 cameras.
⑥CVBS OUT Output Jack: Can be connected with projector.
⑦S-VIDEO OUT Output Jack: Can be connected with projector.
Rear Panel 5.3VTS-1000 Functions Settings
5.3.1 Cooperates with WDC-1000M for Automatic Video Tracking
Step 1, To make sure every system is in the right connection, turn on every speaking unit, and VTS-1000, and then
WDC-1000M.
Step 2, WDC-1000M will automatically search the number of the online users and display on the LCD “ONLINE
INFO”.
WDC-1000M
ONLINE : 006
SPEAKER INFO : 001
INFO
P19 P20

P21 P22
Step 3, Press “OK” key on VTS-1000 to enter main menu, then touch / / / button to scroll through the
available choice for “OPERATE”, and “OK” key to confirm “TOTAL UNITS”, the VTS-1000 will automatically search
the number of online users and display on the LCD ( this operation is to confirm the online user between VTS-1000
and WDC-1000M is the same, so that can proceed to the next step ). If no difference is found, press “cancel” key,
return to menu selection.
Step 4, Touch / / / button to scroll through the available choice for “UNITS SETUP: 001” and “TOTAL
UNITS: XXX”, press “OK” key for automatic camera tracking setup, and address “001” unit’s microphone in-use
indicator is flashing, touch / to adjust the camera to focus on the flashing microphone, then / key, or
“zoom in” / “zoom out” to adjust the image, finally, press “OK” key to save the settings, and the system returns to the
original interface ”UNITS SETUP: 001” and “TOTAL UNITS: XXX”.
OPERATE
SETTINGS
TEST
TOTAL UNITS
SET THE UNIT
UNITS SETUP
SET THE UNIT
UNITS SETUP
UNITS SETUP: 001
TOTAL UNITS : 005
Step 5, Touch button for the next unit setup, and displays “UNITS SETUP: 002” press “OK” key for
automatic camera tracking setup, and address “002” unit’s microphone in-use indicator is flashing, touch /
to adjust the camera to focus on the flashing microphone, then / key, or “zoom in” / “zoom out” to adjust
the image, finally, press “OK” key to save the settings, and the system returns to the original interface ”UNITS
SETUP: 002” and “TOTAL UNITS: XXX”.
Step 6, Again touch button, repeat the settings as “Step 5”, until you have got all units completed. You are
recommended to start from “001” in order not to miss any unit.
Step 7, After completing all the units’ settings, please press any unit’ Talk Key to have a test, you will find the
camera will automatically track the speaking unit, and display the image.
UNITS SETUP: 002
TOTAL UNITS : 005

5.3.2, Functions Menu
Touch / / / button to scroll through the available choice for “OPERATE”, “SETTINGS”, “TEST” and “INFO”.
◆OPERATE
Ⅰ, SET TRACKING: Enter this menu, operator can change the camera tracking manually. For example, if address 001
unit is speaking, you can set the camera to track other representatives, instead of 001 unit.
Ⅱ, SAVE INFO: Enter this menu, operator can adjust the camera to track other image, and save to any address for the
unit, when the unit presses the Talk Key, the camera will automatically track the image which has been saved.
Ⅲ, TOTAL UNITS: Search the number of the online units.
Ⅳ, SET THE UNIT: Enter the menu, the system displays each unit’s address, you can set the camera tracking
accordingly.
Ⅴ, UNITS SETUP: Starting from “001”, you can set the camera tracking one by one.
◆SETTINGS
Ⅰ, INPUT FORMAT: Choose the video input, there is S-Video or CVBS available.
Ⅱ, REVERSAL: There is “REVERSAL OFF” or “REVERSAL ON” available.
Ⅲ, OUTPUT FORMAT: Choose the video output, there is S-Video or CVBS available.
Ⅳ, RESTORE SETTINGS: Can restore the “INPUT FORMAT” and “OUTPUT FORMAT” to default settings.
◆TEST
Color bars: There are “COLOR BARS OFF” and “COLOR BARS ON” available, choose “COLOR BARS OFF”, the camera
will display image, but if choose “COLOR BARS on”, the camera just display color bars.
◆INFO
Ⅰ, Facility
Ⅱ, Standard
Ⅲ, Edition
5.4 VTS-1000 Menu Displays
OPTIONS MENU
OPERATE
SETTINGS
TEST
INFO
SET TRACKING
SAVE INFO
TOTAL UNITS
SET THE UNIT
UNITS SETUP
INPUT FORMAT
OUTPUT FORMAT
REVERSAL
COLOR BARS OFF
COLOR BARS ON
FACILITY
STANDARD
EDITION
P23 P24

6.1, System Connection Examples
Installation and Connections
Power Amplifier
Speaker
DV Recorder
DV
Antenna Antenna
Sound Recorder
WDC-900
6.2,Notes on Installation of the Antennas
For better operation the antennas should be at least 6ft. (2m) above the ground and at least 3ft. away from a
wall or metal surface to minimize reflections.
The antenna’s transmitting power is 10mW, straight-line transmitting distance is 30m, it is recommended to
install the antenna closed to the speaking units, instead of in the control room.
P25 P26

6.3, Antennas Installation Examples
Install the antennas closed to the speaking units.
Antenna
Control Lab
Translator
7.1, Antenna R-2.4C / R-2.4B
7.1.1Transmitting distance can be up to 30m.
7.1.2, Stable functions, reliable and flexible performance, easy to install.
7.1.3, Can be fixed on the ceiling or by triangle bracket.
7.1.4, There is a coaxial cable between antenna and the central controller, the length of the coaxial cable is
preferably less than 15m.
Accessories
R-2.4C R-2.4B
P27 P28

1.RC-10N is for 10pcs Ni-MH batteries, and RC-20N is for 20pcs Ni-MH batteries.
2. Separate charging status indicator for each battery, flashing means being charing.
3.Charging is completed within 5 hours and the charging status indicator lights red
4. Stop charging if batteries are not fully charged within 5 hours.
5. Switching the charger’s power OFF and back ON again with fully-charged （charging completed） batteries
inserted will result in repeated recharge of the batteries. Battery life could deteriorate from this repetitive
charging.
7.2, Charging Case RC-10N / RC-20N 7.3,Battery Installation
7.4,Battery capacity indicator
(legend 1)
(legend 2)
P29 P30

Electrical
Digital and Wireless Discussion Conference System
Electrical
Frequency response 65Hz-18KHz
RF Output power 50mW
Mechanical
Mounting Tabletop
Dimension（H X W X D）
without microphone 127(W) X 52(H) X 165(D)
Microphone length
(selectable) 340MM / 420MM / 480MM
Weight(KG) 0.85KG
NO BATTERY INCLUDED
Specifications
Supply voltage 100V- 240V AC50/60 Hz
Power consumption 30W
Total supply power 60W
Frequency response 65Hz-18KHz(+0-3dB)
THD at nominal level <0.9%
Dynamic range >93dB
Signal-to-noiseratio >98dBA
Audio Output
XLR balance output 6 dBV(-24-6dBV)
6.3mm unbalance output 0 dBV
RCA max. output -0 dBV
Mechannical
Mounting Tabletop or mounted in a 19’’ rack
Dimensions ( H X W X D ) 426(W) X 88(H) X 252(D)
Weight (KG) 4.3kg
WDC-900C & WDC-900DWDC-900M
Optional for Automatic Video Tracking System
Electrical
Supply voltage 100V / 240V 0.5A, AC50/60 Hz
Power consumption 25W
To camera 3 pieces
Video output level BNC 1.08V P-P
Video output impedance 75Ω
Video bandwidth 30MHz
AC output 0
Color Black
Mounting Tabletop or mounted in a 19’’ rack
VTS-1000
P31 P32

Electrical
Frequency range 1700-1900MHz 1700-1900MHz, 2400-2500MHz
VSWR ≤1.5 ≤1.5
Input impedance 50Ω 50Ω
Gain 3-6dBi 16-22dBi
Polarization Vertical Vertical
Polar pattern ≥25dB
Horizontal flap width 120° 360°
Vertical flap width 55° 55°
Max. power 150 150
Connector BNC BNC
Mechanical
Dimensions ( mm ) 100mm (dia.) 300(L) X 300（H）X 50（D）
Weight 154G 874KG
Bracket φ50-100
Models R-2.4C R-2.4B
Specfications
P33 P34