BXB Electronics EDC-2051 User manual

Conference Main
Control Unit
Instruction Manual
Firmware: Ver.1.9.1
Date: Feb. 2020
EDC-2051

EDC-2051 Instruction Manual
1
Safety Instruction …...………………………………....…....…….......…..……..............2
Product Features ……..……………………………….………….…….…….……...…...3
System Connection ……...………………………………..….…….…….…….......….....4
Physical Description
Front View..............…………………….….….…….…….…...….…….……....…...5
Rear View .…………………......…….…….…….……..….……...............…..…..6
Basic Operation
Turn On the Unit.......................…….…….…….…….…….……..............…..…..7
Using the Front Panel LCD......…...…….….…….…….…….…….…….....….…..8
Advanced Operation
Check the MIC ID...……….……….…….…….…….…….……...............…....…..9
Set the Meeting Mode...................…….…….…….…….……......................…..10
Set the Open-Mic Qty................…..…….…….…….…….……..............…..…..11
Set the MIC Auto-OFF Time.............….…….…….…….……......................…..12
Volume Setting………………….....……..…..…….….....…….......................…..13
Microphone SPK Setting...................................................………….......….…..14
Microphone Unit
EDC-2011 Table-top Chairman Unit.……….…….…….…….…..............….…..15
EDC-2012 Table-top Delegate Unit.……….…….…….…….…............….….....16
Appendix
Set the DIP Switch of Microphone Unit...…………....…...................................17
Protocol Setting...............................................................................................17
Connected Qty. of Microphone Units ………………………….………………….18
Contents

2
Safety Instruction
EDC-2051 Instruction Manual
01. Read the instruction manual carefully before installing and using this unit.
02. Follow the instructions and be aware of warning indications.
03. Please do not use any spare parts without the recommendation of your dealer.
04. Use the fixing accessories offered by BXB.If the system is broken due to the
improper fixing, BXB would not bear the responsibility for compensation.
05. Make sure the power cord has been fixed properly.
06.Do not use any three-hole plugs or extension cords as this would result in fire
or short circuit.
07. Do not stuff anything or spill liquid of any kind onto or into this unit.
08. Contact maintenance technicians if the conditions below occur:
a. Power cord or plug is damaged. b. Liquid has been spilled into this unit.
c. The product does not work normally under normal operating conditions.
d. The unit has been dropped or the cover has been damaged.
e. The function cannot work completely.
09.To reduce the risk of damage caused by lightning strike, it is essential that all
cables must be bonded well to the same grounding point.
10. Install this unit carefully. Impacting and fierce shaking should be avoided.
11. Do not disassemble or remodel this unit:
a. High voltage and sensitive electrical circuit are inside of the unit. Do not
disassemble it to prevent electric shock. If needed, please ask for help
from the qualified technicians.
b. The specification of any replaced spare part should be validated by
manufacturer, or it may cause fire and short circuit.
12.Do not stuff anything onto the fan, or the unit would overheat and function
abnormally.
13.Do not use this unit in the environment with improper temperature, moisture,
and power level to avoid component damage. The adequate operation
temperature is 0°C-40°C; storage temperature -15°C-55°C; relative humidity
45%-70% (non-condensing); atmospheric pressure 86KPa-106KPa; power
input AC 90V-264V. Adequate coverage is requisite if the unit is used outside.
14.Do not clean this unit and its accessories with chemical detergent. Please do
not clean it with liquid detergent. Just use a damp cloth for cleaning.
15.Do not switch on/off the power of this unit rapidly no matter it’s operating or
off. It can maintain the regular operation of the sensitive electronic circuit.
Caution: The static electricity treatment of printed circuit boards should follow
ESD safety measure. Ground connection should also be done well.
Caution: Please be aware of the voltage accordance with that in your country.
Warning: Only qualified technicians can disassemble the cover of this unit. Before
disassembling the top cover, it’s essential to unplug the power. The power
cord can be plugged in again only before the top cover has been put back.

3
Product Features
EDC-2051 Instruction Manual
Table-top Chairman / Delegate Unit
●High stability: parallel and series connection are applicable. Even one of the units
is disconnected/out of order, others can still operate normally.
●Featured with a built-in 2.5”loudspeaker. When the attendee presses the speaking
button, the speaker would be auto-off to avoid sound feedback.
●Equipped with speaking button and back-lighted indicator to control/show the
speaking status.
●Microphone capsule is equipped with illuminating red ring to show speaking status.
●No limitation of chairman unit’s quantity; you can also randomly change the
position and sequence.
●Chairman unit is equipped with speaking priority button.
●Built-in Ø 3.5mm earphone and recording plugs (volume adjustable).
●Gooseneck microphone with shield and flexible tube, easy to be positioned and
bent without noise (standard length: 43/48/56/70cm).
●Prevents the interference of electromagnetic wave.
Conference Main Control Unit
●Quick installation & easy maintenance via CAT5E cables.
●Equipped 4-chain RJ45 ports: each port enables the max. of 15 units; the total is 50
units. Via BXB extension power supply, it enables the max. of 265-unit connection.
●4x20 digits LCD screen: showing conferencing modes, the ID of the operating
microphones, microphone volume and other .
●Multiple operating modes: Normal/Chairman/Override.
●Equipped with RS-232 interface: connects with BXB HDS-720 IP Network AV
Controller, camera, and other environmental control equipment for system
integration.
●Equipped XLR plug for the connection with other recording and audio equipment.
●Microphone auto-off setting (30/45 seconds).
●Open-mic mode or the max. of 9 microphones activated at the same time.
●Microphone auto-scanning ensures the status of each microphone before meeting.

4
System Connection
EDC-2051 Instruction Manual
EDC-2051 Conference Main Control Unit
EDC-2011/2012
Table-top
Chairman/Delegate Unit
SW-003 RJ45 Distributor CAT5E (loop distribution)
Amplifier
HDS-720
Network AV Controller
HCK-700 Camera Control
Keyboard
GS-1002P Gigabit POE Switch
HDC-713
HD IP Camera
CAT6
RS-232
Speaker CableAudio Cable
1 2
3
Aux Output (Unbalanced)
1: Ground
2: Sound(Aux)
3: Empty
Audio output pin (XLR)
Speaker’s Image Tracking
(optional)
Acoustic System
1 2 3 4
5
6 7 8 9
Pin 2:TXD
Pin 3:RXD
Pin 5:GND
G R T
HDS-720
•There are 4 microphone ports at the back of main control unit, which can be connected
randomly without sequence restriction.
•Microphone units are equipped with RJ45 ports x 2 for connecting Cat5e cables (STP).
•Chairman/delegate units can be positioned anywhere within the circuit.
•Please make sure the power is off before unplugging any unit. Re-start the unit after the
installation has been completed.
IOIOI Pin
RS-485 HDMI

5
Physical Description
EDC-2051 Instruction Manual
Front View
1. Power switch
2. Conference function control
MODE Mode-selection
UP Gain parameter setting/volume up
DOWN Reduce parameter setting/volume down
3. Volume output LED indicator
4. 4 x 20 LCD screen
1
2
34

6
Physical Description
EDC-2051 Instruction Manual
Rear View
1. AUX Output (Unbalance, XLR connector)
Pin 1: Ground
Pin 2: Sound (Aux)
Pin 3: Empty
2. Volume knob for the built-in speaker of the microphone unit
3. LINK 1~4: microphone unit port (RJ45)
4. RS-232 control port (see Appendix for protocol setting):
Pin 2: TXD
Pin 3: RXD
Pin 5: GND
5. DC power supply fuse (DC 250V/8A)
6. Operating voltage DC24V/6A (please use BXB’s Extension Power Supply-
EA11011M-240).
Warning: RJ45 microphone unit ports (yellow square part) are not the standard LAN ports.
Please do not plug in other equipment, or the unit would be damaged.
123456

7
Basic Operation
EDC-2051 Instruction Manual
Turn On the Unit
❏After confirming all the wiring, switch on EDC-2051 and the LCD screen will
display the version number of the firmware:
❏Later, the system will start auto-scanning to check the memory capacity and
all the linked microphone units. The condition would be shown as below:
❏After the scanning has completed, the LCD screen will display the following
information (main menu):
NOTE:
1. As EDC-2051 is on, the system will start microphone connection testing. At this
moment, the red LED indicator on the microphone unit will be constantly on. 5
seconds later, if the connection goes wrong, the LED indicator of the
malfunctioned microphone units will flash. It indicates the failed connection.
2. In this case, the power of EDC-2051 should be switched off and then switched
on again after checking the microphone connection. If the red LED indicator of
microphones is constantly on for more than 5 seconds, the connection is normal.
3. Press the speaking button of the chairman unit or any delegate unit, the red LED
indicator of microphones can be turned off. Or, you can wait for 30 seconds until
the test mode is cleared.

8
Basic Operation
EDC-2051 Instruction Manual
Using the Front Panel LCD
1) NO: the ID number of the operating microphone; 3 sets of ID numbers displayed
per page.
Chairman MIC: *01~*10
Delegate MIC: 001~255
2) MODE:
Normal: Normal Mode
Override: Override Mode
Chairman: Chairman Mode
3) OPEN-MIC: the number of speaking microphones at the same time; 1~9/all.
4) AUTO-OFF (Automatic Mic-off): 30/45 seconds/manually turn off.
5) SYSTEM LEVEL: adjust volume by pressing "UP▲" or "Down▼" button.
6) SPK SETTING: turn on/off the built-in loudspeaker of microphone units.
※After you don’t press setting buttons for 30 seconds, the system will save
the present setting automatically and then go back to the default page. You
don’t need to press any button for saving and exiting.
5.
6.
4.
3.
2.
1.

9
Advanced Operation
EDC-2051 Instruction Manual
Check the MIC ID
Note: All figures shown on this manual are only the examples for easier
instruction. All the EDC-2051 are proceeded serious QC test before the delivery.
Thus, the default values would be different for each unit. You can change settings
by simply following the instructions.
❏When the conference microphone is in use, the red indicator ring on the
microphone will be on constantly. Meanwhile, its ID number will be displayed
on the LCD screen of EDC-2051. Max. of 3-set ID numbers can be shown on
the main menu.
❏If there’re more than 3 microphones are in use, “← →” icon will be displayed
at the up-right of the LCD screen. Just press the MODE button, LCD screen
will show ”◘”; and then press “UP▲” and ”DOWN▼” button to check the
number of the other using microphone.
❏The symbol of “◘” icon indicates that the item is selected. Just press MODE
button to select the item for setting all conference modes.

10
Advanced Operation
EDC-2051 Instruction Manual
Set the Meeting Mode
❏Press MODE button and move the “◘” icon to “2. MODE”. Meanwhile, the
“Normal” item is flashing. Just press “UP▲” or “DOWN▼” button to change
the conference mode.
❏Following are all the conference modes offered:
※Chairman microphone can be operated anytime; it will not be restricted by
any conference mode.
Normal: delegate can randomly speak (within open-mic limit) and stop talking.
Chairman Mode and Override Mode cannot function in this mode.
Chairman: only chairman can speak.
Override: delegates take turn speaking. For example, if Open Mic Qty is set
as one, only one delegate microphone can be turned on.If the second
delegate presses the speaking button, the first microphone will be overridden
and then turned off. If the Open Mic Qty is set as three. When the fourth
microphone is on, the first one will be off; when the fifth microphone is on, the
second one will be off. In short, always 3 delegates can talk; and so forth.
However, chairman microphone is always unrestricted in this mode.

11
Advanced Operation
EDC-2051 Instruction Manual
Set the Open-Mic Qty
❏ALL Mic/1-9 delegate microphones turn on at the same time.
❏Press MODE button and then move” ◘” to “OPEN-MIC”, Meanwhile, “03 Mic”
item will flash. Just press “UP▲” or “DOWN▼” button to change the Open-
Mic quantity.
The 1~9 number indicates the Open-Mic quantity.
OPEN-MIC: 1 Mic
→ Only 1 delegate can talk.
OPEN-MIC: 9 Mic
→ 9 delegates can talk at the same time.
OPEN-MIC: ALL Mic
→ All delegates can talk freely at the same time.

12
Advanced Operation
EDC-2051 Instruction Manual
Set the MIC Auto-OFF Time
❏Delegate unit will be automatically off after receiving no sound for 30/45 sec.
The delegate can also switch off the speaking button manually.
❏Press MODE button and move “◘” to “AUTO-OFF”. Meanwhile, “30 Sec” item
will be flashing. Just press “UP▲” or “DOWN▼” button to set 30 or 45 sec.
AUTO-OFF: 30 Sec
→Delegate microphones will be turned off in 30 sec after receiving no sound.
AUTO-OFF: 45 Sec
→Delegate microphones will be turned off in 45 sec after receiving no sound.
AUTO-OFF: Invalid
→Delegate microphones will not be turned off all the time. The delegate
should switch off the speaking button manually.
Note:
1. EDC microphone unit belongs to cardioid type. It perfectly receives the voice of
the in-front speaker. The sound reception from other directions would be
reduced.
2. The in-front speaker and the microphone unit should keep with the proper
distance to make the microphone completely receive the human voice. Or, it
would cause sound offset due to the time difference of sound receiving.

13
Advanced Operation
EDC-2051 Instruction Manual
Volume Setting
❏The default volume level is 80%; 0% indicates mute. You can adjust the level
based on the needs.
❏Press MODE button and move “◘” to “5. SYSTEM LEVEL”. Press “UP▲” or
“Down▼” button to adjust the system volume.
❏Press "UP▲" button to volume up. Each press would increase +2 level; press
"Down▼" button to volume down. Each press would decrease -2 level.
❏Adjust this volume level would also affect the volume of the built-in
loudspeaker of the microphone unit as well as the volume of earphone
/recording output.
❏If EDC-2051 doesn’t detect any action, it would go back to the main menu.
The current setting would be also saved automatically. You don’t need to
press any button for saving and exiting.

14
Advanced Operation
EDC-2051 Instruction Manual
Microphone SPK Setting
❏The default setting of the built-in loudspeaker is ON. You can set as OFF
based on your need.
❏Press MODE button and then move “◘” to “6. SPK SETTING”. Press "UP▲“
or "Down▼" button to select "SPK_ON" or "SPK_OFF" mode. The
brackets indicates that the item has been selected.
❏With the "SPK_OFF“ mode, the audio output of the earphone and recording
still work normally.
❏If EDC-2051 doesn’t detect any action, it would go back to the main menu.
The current setting would be also saved automatically. You don’t need to
press any button for saving and exiting.

15
Microphone Unit
EDC-2051 Instruction Manual
EDC-2011 Table-top Chairman Unit
Product Features
❏Quick installation via CAT5E cables; easily applicable to small-scale meetings.
❏High stability: parallel and series connection are applicable. Even one of the units is
disconnected/out of order, others can still operate normally.
❏Featured with a built-in 2.5”loudspeaker. When the attendee presses the speaking
button, the speaker would be auto-off to avoid sound feedback.
❏Speaking button and back-lighted indicator to control/show the speaking status.
❏Microphone capsule is equipped with illuminating red ring to show speaking status.
❏No limitation of chairman unit’s quantity; you can also randomly change the
position and sequence.
❏Chairman unit is equipped with speaking priority button.
❏Built-in Ø 3.5mm earphone and recording plugs (volume adjustable).
❏Gooseneck microphone with shield and flexible tube, easy to be positioned and
bent without noise (standard length: 43/48/56/70cm).
❏Prevents the interference of electromagnetic wave.
1. Gooseneck MIC plug (DIN TYPE)
3. Control button with indicator light
5. Earphone volume control
7. Recording plug (Φ 3.5 stereo)
9. Loop connector (CAT5E)
2. Built-in 2.5” loudspeaker
4. Speaking button with indicator light
6. Earphone plug (Φ 3.5 stereo)
8. DIP switch for MIC ID setting (please
refer to the appendix)
1
2 8
3 4 5 6 7 9

16
Microphone Unit
EDC-2051 Instruction Manual
EDC-2012 Table-top Delegate Unit
Product Features
❏Quick installation via CAT5E cables; easily applicable to small-scale meetings.
❏High stability: parallel and series connection are applicable. Even one of the
units is disconnected/out of order, others can still operate normally.
❏Featured with a built-in 2.5”loudspeaker. When the attendee presses the speaking
button, the speaker would be auto-off to avoid sound feedback.
❏Speaking button and back-lighted indicator to control/show the speaking status.
❏Microphone capsule is equipped with illuminating red ring to show speaking status.
❏No limitation of chairman unit’s quantity; you can also randomly change the
position and sequence.
❏Built-in Ø 3.5mm earphone and recording plugs (volume adjustable).
❏Gooseneck microphone with shield and flexible tube, easy to be positioned and
bent without noise (standard length: 43/48/56/70cm).
❏Prevents the interference of electromagnetic wave.
1. Gooseneck MIC plug (DIN TYPE)
3. Speaking button with indicator light
5. Earphone plug (Φ3.5 stereo)
7. DIP switch for MIC ID setting
2. Built-in 2.5” loudspeaker
4. Earphone volume control
6. Recording plug (Φ3.5 stereo)
8. Loop connector (CAT5E)
1
2 7
34 5 6 8

17
Appendix
EDC-2051 Instruction Manual
Set the DIP Switch of Microphone Unit
❏Each of the EDC-2011/2012 already has a preset ID number, which will show
on the label at the bottom of the unit.
❏Change the ID number via the DIP Switch at the bottom of the unit.
❏All the adjustments should be done after the system has been shut down.
❏10-digit DIP switch is set based on the binary combination; chairman unit’s ID
cannot share with delegate unit’s ID.
❏Please refer to the table below for Chairman/Delegate DIP Switch setting.
EDC-2011 chairman ID range→ *01~*10
EDC-2012 delegate ID range→ 1~255
Protocol Setting
Type RS-232 Baud Rate 2400 bps N,8,1 (Hex)
Byte1 Byte2 Byte3 Byte4
DELEGATE-MIC ON 0x55 0x55 0x01 ~ 0x7f 0x0D
DELEGATE-MIC OFF 0xAA 0x55 0x01 ~ 0x7f 0x0D
CHAIRMAN-MIC ON 0x55 0xAA 0x01 ~ 0x7F 0x0D
CHAIRMAN-MIC OFF 0xAA 0xAA 0x01 ~ 0x7f 0x0D
ex.
DELEGATE 1 On 0x55 0x55 0x01 0x0D
DELEGATE 1 Off 0xAA 0x55 0x01 0x0D
DELEGATE 127 On 0x55 0x55 0x7F 0x0D
DELEGATE 127 Off 0xAA 0x55 0x7F 0x0D
Note: When switching to the number out of the range, the microphone’s
indicator light will flash as EDC-2051 is turned on.

18
Appendix
EDC-2051 Instruction Manual
Connected Qty. of Microphone Units
Notice:
❏Within 100M of each circuit, the maximum of connected microphone units is
15. The quantity would decrease gradually if the cable length is over 120M.
❏If you need to connected more than 15 microphone units for single circuit, an
extension power supply (BXB’s EPS-C083-C) would be required.
Cable length of
each circuit 20M 40M 60M 80M 120M
Suggested qty. of
connected units
of 4 circuits 50 50 50 44 36
Total connected microphone units of the MCU:

BXB Electronics Co., Ltd.
6F-1, No.288-5, Xinya Rd., Qianzhen Dist., Kaohsiung City 80673, Taiwan
TEL [phone]
FAX [phone]
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