BZB Gear BG-A88M Manuel utilisateur
BG-A88M
8x8 Digital Audio Processor
User Manual
BZBGEAR BG-A88M PRODUCT MANUAL
Address: 830 National Drive #140, Sacramento, CA 95834, USA ·Tel: +1(888)499-9906 ·Email: support@bzbgear.com 2
BZBGEAR BG-A88M PRODUCT MANUAL
Table of Contents
Statement 4
Safety Precaution 4
Introduction 5
Features 5
Package Contents 6
Specifications 6
Device Interface Descriptions 7
Computer Control 8
Volume Meter 9
Input Settings 10
Expander 11
Equalizer 12
Compressor 13
Auto Gain Control 14
Auto Mixer 16
Adaptive Feedback Cancellation 17
Adaptive Echo Cancellation 18
Adaptive Noise Suppression 19
Matrix Mixer 20
Output Settings 21
Two-way Crossover 22
Delay 23
Limiter 24
Scene Management 25
Serial Settings 26
Control Commands 26
GPIO Setting 27
Reset Setting 27
TCP/IP Control Command 28
RS-232 Control Command 34
Troubleshooting and Solutions 39
Application Example 39
Tech Support 40
Warranty 40
Mission Statement 40
Copyright 40
Address: 830 National Drive #140, Sacramento, CA 95834, USA ·Tel: +1(888)499-9906 ·Email: support@bzbgear.com 3
BZBGEAR BG-A88M PRODUCT MANUAL
Statement
Please read these instructions carefully before connecting, operating, or configuring this
product. Please save this manual for future reference.
Safety Precaution
●To prevent damaging this product, avoid heavy pressure, strong vibration, or immersion
during transportation, storage, and installation.
●The housing of this product is made of organic materials. Do not expose to any liquid,
gas, or solids which may corrode the shell.
●Do not expose the product to rain or moisture.
●To prevent the risk of electric shock, do not open the case. Installation and maintenance
should only be carried out by qualified technicians.
●Do not use the product beyond the specified temperature, humidity, or power supply
specifications.
●This product does not contain parts that can be maintained or repaired by users.
Damage caused by dismantling the product without authorization from BZBGEAR is not
covered under the warranty policy.
●Installation and use of this product must strictly comply with local electrical safety
standards.
Address: 830 National Drive #140, Sacramento, CA 95834, USA ·Tel: +1(888)499-9906 ·Email: support@bzbgear.com 4
BZBGEAR BG-A88M PRODUCT MANUAL
Introduction
The BG-A88M is a digital audio processor which offers 8-ch balanced MIC/linear
inputs and 8-ch balanced linear outputs. It features adaptive feedback suppression,
full-band adaptive acoustic echo cancellation, and dynamic adaptive noise reduction
technology. The Auto Mixer function allows users to set a priority when multiple
microphones are used.
The BG-A88M includes various digital signal processing features such as an Expander,
Equalizer, Compressor, Auto Gain Control, Limiter, High Pass Filter, Low Pass Filter, and
Delay. It also supports matrix routing, volume control, metering, scene control, and more. It
can provide a 48V phantom power supply for the 8 MIC inputs, has a 48KHz sampling rate,
and 24-bit A/D or D/A conversion.
The BG-A88M also supports 8-ch programmable GPIO function. The included control
software is compatible with Windows 7/10/11 operating systems. The unit can be
connected and controlled via the network using a standard RJ45 interface or via RS-232
control using serial commands.
Features
●8-ch balanced MIC/linear inputs and 8-ch balanced linear outputs
●Adaptive feedback suppression
●Full-band adaptive acoustic echo cancellation technology
●Dynamic adaptive noise reduction technology can reduce signal to noise level by up
to 18dB
●Auto Mixer function can set the order of priority when multiple microphones are
input at one time
●Digital signal processing: Expander, Equalizer, Compressor, Auto Gain Control,
Limiter, High Pass Filter, Low Pass Filter, and Delay.
●Matrix routing
●Volume control, meter, scene control, etc.
●48V phantom power supply for 8-ch MIC inputs
●48KHz sampling rate, 24-bit for A/D or D/A conversion
●8-ch programmable GPIO function
●Software control via Windows 7/10/11 with standard RJ45 interface control
●RS-232 serial command and control supported
Address: 830 National Drive #140, Sacramento, CA 95834, USA ·Tel: +1(888)499-9906 ·Email: support@bzbgear.com 5
BZBGEAR BG-A88M PRODUCT MANUAL
Package Contents
①1 x BG-A88M
②1 x AC 100~240V 50/60Hz Power Cord
③1 x 3-pin - 3.81mm Phoenix Connector (Male)
④1 x 10-pin - 3.81mm Phoenix Connector (Male)
⑤4 x 12-pin - 3.81mm Phoenix Connectors (Male)
⑥2 x Mounting Ears (Wall Mount)
⑦8 x Machine Screws (KM3*4)
⑧1 x User Manual
Specifications
Address: 830 National Drive #140, Sacramento, CA 95834, USA ·Tel: +1(888)499-9906 ·Email: support@bzbgear.com 6
Technical
Amplitude-frequency
(20Hz~20KHZ@+4dBu)
±0.2dB
THD+N (1KHZ@+4dBu)
≤ 0.01%
SNR (linear input)
≥ 90dB
Dynamic Range
≥ 100dB
Channel Level Difference
±0.5dB
Channel Isolation
≥ 80dB
Max Input Level
20dBu
Max MIC Gain
40dB
Input Impedance
20KΩ
Output Impedance
300Ω
Sampling Frequency
48KHZ
A/D and D/A Conversion
24Bit
Phantom Power
+48 VDC
Connection
Inputs
8 × Balanced MIC/LINE [3-pin phoenix connector] or 4 × Stereo
Audio [3-pin phoenix connector]
Outputs
8 × Balanced LINE [3-pin phoenix connector] or 4 × Stereo audio
[3-pin phoenix connector]
Controls
1 × LAN [RJ45]
1 × RS-232 [3-pin phoenix connector]
8 × GIPO [10-pin phoenix connector]
Mechanical
Housing
Metal Enclosure
Color
Black
Dimensions
440mm (W)×250mm (D)×45mm (H)
Weight
3.3kg
Power Supply
AC 100 - 240V 50/60Hz
Power Consumption
9W (Max)
Operating Temperature
0°C ~ 40°C / 32°F ~ 104°F
Storage Temperature
-20°C ~ 60°C / -4°F ~ 140°F
Relative Humidity
20~90% RH (non-condensing)
BZBGEAR BG-A88M PRODUCT MANUAL
Device Interface Descriptions
Front Panel
No.
Name
Description
1
POWER LED
When the device is powered on, the red LED will be illuminated.
2
STATUS LED
When the device is running normally, the green STATUS LED will flash.
Rear Panel
No.
Name
Description
1
MIC +48V
8-ch phantom power supply indicators.
2
MIC/LINE INPUTS
8-ch balanced MIC/linear inputs, used for connecting audio
source devices via phoenix connectors.
3
OUTPUT
8-ch balanced linear outputs, used for connecting to an amplifier
or speaker via phoenix connectors.
4
GPIO
8-ch programmable GPIO interfaces.
5
RS-232
Connect to a PC or control system to transmit RS-232 control
commands.
6
LAN
Standard RJ45 interface for network connection.
7
RESET
Used for resetting the audio processor.
8
GND
Connect outer housing to the ground.
9
Power Switch & Power Port
Power switch and AC 100-240V power input port.
Address: 830 National Drive #140, Sacramento, CA 95834, USA ·Tel: +1(888)499-9906 ·Email: support@bzbgear.com 7
BZBGEAR BG-A88M PRODUCT MANUAL
Computer Control
Connection
The BG-A88M audio processor can be controlled via the provided software on a Windows
7/10/11 machine. Use a category cable to directly connect to the LAN port of the processor
to your computer or via your local network using the following steps.
Step 1: Install the “BZBGEARAudioMatrix8.exe” application on the host computer and
change the computer’s IP address to ensure that IP addresses of the host computer and
the processor (Default IP address: 192.168.0.199, Subnet mask: 255.255.255.0) are
within the same network segment, as shown in the figure below.
Step 2: Double-click the “BZBGEARAudioMatrix8.exe” icon to run the application on the
host computer.
Step 3: When the application is opened the HOME page will appear as shown below.
Step 4: Click the Network icon in the toolbar at the top .
If there is a red X at the top-right corner of the icon as shown in the figure above, it means
the host computer has not connected with the audio processor.
Address: 830 National Drive #140, Sacramento, CA 95834, USA ·Tel: +1(888)499-9906 ·Email: support@bzbgear.com 8
BZBGEAR BG-A88M PRODUCT MANUAL
If there is a red X, click the icon and a dialog box of all IP addresses from connected
devices will appear as seen in the following image.
Step 5: Choose the audio processor’s IP address and click CONNECT. The processor will
now be connected with the host computer. After connection is established, the CONNECT
& SETUP box will appear as shown below. You may close it if no changes are needed.
If the audio processor has been connected with the host computer successfully, the
network icon will have a green check in the top right corner as shown.
Volume Meter
The volume meters will display the signal level of the various input & output volumes.
The meter has 3 colors (Red, Yellow, and Green) to denote signal levels for the volume
of the 8 inputs and 8 outputs. Red means that volume may be too high to be limited,
yellow indicates the volume is ideal, while green is within a reasonable lower range.
Address: 830 National Drive #140, Sacramento, CA 95834, USA ·Tel: +1(888)499-9906 ·Email: support@bzbgear.com 9
BZBGEAR BG-A88M PRODUCT MANUAL
Input Settings
As shown below, clicking the INPUT module on the HOME page or the “IN” tab on
the menu bar will open the INPUT setting page.
The following figure shows the details of the INPUT setting page.
GAIN CONTROL: Indicates the GAIN level of the input signal which can be adjusted.
INVERT: Inverts the polarity of the signal on the input channel.
PHANTOM: Turns on/off 48V phantom power for the channel.
MUTE: Mutes the input channel, equivalent to clicking the letter M on the INPUT module
on the HOME page.
WHITE: Generates white noise for signal testing.
PINK: Generates pink noise for signal testing.
SINE: Generates a sinusoidal signal for testing and the meter below shows the frequency of
the sine wave.
FADER: Controls the output level of the test signal.
You can set the signal parameters of an input channel by entering its “CHAN” number in the
menu on the right side of the “IN” page. Audio process modules such as EXPANDER,
EQUALIZER, COMPRESSOR and AUTO GAIN CONTROL, are also available in the right
panel.
Address: 830 National Drive #140, Sacramento, CA 95834, USA ·Tel: +1(888)499-9906 ·Email: support@bzbgear.com 10
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