DSPPA DA8250 User manual

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Public Address System23 M\S Amplifier4 DA82505678910
Public Address Amplifier 8M/S lntelligent PA Amplifier DA8250
PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP
M-250 M-250 M-250 M-250 M-250 M-250 M-250 M-250 M-250
111213141516 User's Manual17
18 Welcome to use DSPPA public address system. For the better use of this product, please read this instruction19 carefully prior to use.2021222324252627 Guangzhou DSPPAAudio Co., Ltd28 http://www.dsppatech.com29
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此页留空供用户记事1
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4567891011 DA—V0.212 Version: 2018-4-201314151617
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About Operation Instruction
This operation instruction shall come into effect on the date on which the development of
M/S power amplifier DA8250 equipment is completed. The operation instruction contains
the systematic introduction to M/S power amplifier DA8250 equipment, precautions for
use, instruction to connection of system, and instruction to operation of product, and so
on. The user shall read this operation instruction carefully prior to connection, installation
and use, and shall operate in accordance with the instructions herein.
The attention must be paid to the instructions with such identification on the back panel of the
machine. Please use or operation the machine following such instruction.
Please keep this operation instruction for the checking in the future.

M/S Amplifier
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Caution1
2
To assure the finest performance, please use or operate the product in accordance with corresponding3
instructions.45 This symbol indicates "forbidden content" This symbol indicates "compulsory content"6
■ Please make sure that the
power wire is NOT damaged.
Do NOT unplug the equipment
by pulling the power wire;
otherwise it may cause electric
shock, short circuit or fire.
■ When the equipment is in use, DO NOT block the air
outlet which should be kept clear, in order to avoid
overheat.
■Do NOT store this
equipment in any
place with heavy
dust or vibration, or
where it is extremely
cold or hot.
■ Please do NOT place any heavy article on this
equipment. Please operate
switches, buttons or
external audio source
carefully.
■ Please prevent foreign matters (such as paper,
metal etc.) entering the equipment through the gaps
or opening, in such cases, please cut off the power
supply immediately.
■ Do NOT attempt to remove any internal component
from the equipment, or to
modify the equipment in
whatever manner.
■ In case that sound is suddenly off or there is
abnormal odor or smoke, please unplug the
equipment from the power socket to avoid potential
electric shock, fire or other accident. The equipment
should be inspected by professional personnel.
Burning Smell
■ If the equipment is not in use for a long period, please
unplug it from the AC power socket to realize zero
energy consumption.

1
Content1
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1. Product Instruction .................................................................................................................................................23
1.1 Equipment Introduction........................................................................................................................................24
1.2 Functional Features ..............................................................................................................................................25
2. Description of Appearance.....................................................................................................................................36
2.1 Front panel instructions........................................................................................................................................37
2.2 Rear panel description..........................................................................................................................................48
3.1 Main interface operation instructions...................................................................................................................59
3.2 Volume adjustment interface operation instructions.............................................................................................610
3.3 System Settings Interface Operation Description.................................................................................................811
Safety Precautions......................................................................................................................................................912
Matters needing attention...........................................................................................................................................913
Packing List..............................................................................................................................................................1014
Specification.............................................................................................................................................................1015
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1. Product Instruction1
1.1 Equipment Introduction2
The DA8250 device is an eight-master-one-standby-amplifier that integrates eight power amplifier modules and a3
sub-module and can control eight broadcast intervals. When one of the sections fails, the standby channel can also4
be used to continue broadcasting.5
1.2 Functional Features6
Touch screen design, user-friendly.7
9 channels: 8 main amplifiers, 1 standby amplifier.8
Active/standby switching function: 8 main channels can use their respective main amplifiers, and they9
can also automatically/manually/remotely invoke standby power amplifier.10
Each amplifier channel has independent input and output interfaces, and one input corresponds to one11
output.12
Each amplifier can independently adjust the volume, the volume adjustment can be performed by the13
machine and remotely.14
High power switching design, with protection of over voltage, over current, high temperature, and short15
circuit.16
Status, volume, temperature and other operating parameters of this power amplifier can be displayed on17
LCD screen or remote host.18
0 ~ 100V constant voltage output.19
Each module supports hot swap.20
A remote control host can connect and control multiple power amplifiers at the same time.21
With a communication interface, you can cascade multiple amplifiers.2223

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2. Description of Appearance1
2.1 Front panel instructions2
Public Address Amplifier 8M/S lntelligent PA Amplifier DA8250
PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP PWR PROT
STAUS
SIG CLIP
M-250 M-250 M-250 M-250 M-250 M-250 M-250 M-250 M-250
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1. Display screen6
Touch screen can display temperature, volume and power and working status of the module. You can touch screen7
to replace the current module by standby module.8
2. Protection indicator（PROT）9
This indicator lights up when the machine is automatically protected by a fault.10
3. Pressure limit indicator（CLIP）11
4. Output level indicator（SIG）12
5. Power Indicator（PWR）13
The indicator is turn on when the power of this channel is turn on.14
6. Module replacement plug hole15
There is no need to power off the power amplifier board when replacing it. Put the finger directly into the socket16
and remove the power amplifier board. Then insert the new power amplifier board into the slot, and push it in17
place. The red light will be on. The corresponding channel display status of the LCD is normal, and the power18
amplifier board is in normal working condition.19
When an amplifier module reports information “failure” on the LCD, the power amplifier board needs to be20
replaced.21
Note: When you do not need to replace the module, do not insert your finger into the insertion hole to avoid22
broadcast interruption.23

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2.2 Rear panel description1
COM 100V
CHANNEL-9
COM 100VCOM 100VCOM 100VCOM 100VCOM 100VCOM 100VCOM 100VCOM 100V
CHANNEL-8 CHANNEL-7 CHANNEL-6 CHANNEL-5 CHANNEL-4 CHANNEL-3 CHANNEL-2 CHANNEL-1
CH-7CH-8 CH-5CH-6 CH-3CH-4 CH-1CH-2
CH9
GND IN
12
456
AC220V
~50/60Hz 3000W
电源开关
型号：DA8250
品名：八主一备智能广播功放
制造商：广州市迪士普音响科技有限公司 2000m
CAUTION!
RISK OF ELECTRIC SHOCK
DO NO T OPEN
警告
请勿打开，以免触电
IN IN IN IN IN IN IN IN
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1. AC220V power input interface4
When the interface is connected to theAC grid, first connect the interface and turn on the power switch.5
2. MainAmplifier Channel Output 100V Positive Terminal and COM Output Ground Terminal6
The 100V output of the eight main power amplifier channels is the positive output of the channel, and the7
channels of the eight main power amplifiers are independent from each other.8
The output ground of eight main power amplifier channels is the same as the ground of the channel, and the9
channels of the eight main power amplifiers are independent from each other.10
3. The logo means "applicable to altitudes up to 2000 meters above sea level and non-tropical climate safety.11
4. Eight channel input interface12
It is used to input the audio sources of eight channels respectively. It can be connected to peripheral audio source13
equipment. It is mainly used to connect the eight output interfaces of the intelligent host partition output module.14
One interface corresponds to one audio source.15
5. This interface is used for expansion.16
6. Main power switch17
When starting up, plug in the plug to the ~220VAC outlet and turn on the power switch.18
When shutting down, turn off the power switch first and then pull out the machine plug.1920
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3. Setup Instructions1
2 Boot interface3
3.1 Main interface operation instructions4
5 Main interface（normal display）6
Operating parameters (Each column corresponds to the real-time display of a channel's operating parameters)：7
Temperature (%)：The temperature inside the main amplifier of each channel.8
Volume (%)：Volume of each channel, range：0～100.9
Power (W)：Power of each channel10
Status: The current state of each channel: self-test, normal, fault, power halved, overheated, turn off.11
1. Self-inspection：Self-inspection at boot time12
2. Normal：The channel's amplifier is in normal playback.13
3．Fault：There are sub-faults, power amplifier faults, and line faults. If the channel amplifier is broken14
and no standby power amplifier can be called, no signal will be output.15
4. Overheat：When internal temperature of the main power amplifier of this channel detects 76°C, it16
shows “overheat protection” and automatically switches to standby power amplifier; when17
the temperature drops to 70°C, it will automatically switch to the main power amplifier of18
the original channel. There is no channel installed amplifier, the corresponding column does19
not show the operating parameters.20
5. Turn off：The channel's power is turned off. Eight main amplifiers and one spare amplifier can be21

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turned on and off individually and remotely using the network.1
3.2 Volume adjustment interface operation instructions2
3 Volume adjustment interface4
When you need to adjust the volume of a channel, touch the channel to enter the volume interface setting, and5
slide the button or touch “+—” to adjust the channel volume.6
Touch“ ”can turn off the channel power7
Manual switch (OFF/ON)8
a. Automatic call preparation (Hand tuning switch is at “OFF”):9
8 master amplifier in the automatic call state. The priority of the standby power amplifier is：10
The first channel has the highest priority, and the eighth channel has the lowest priority11
Example：In the automatic call state, when channel B fails or is overheated：12
(1) If the other amplifiers are normal and the standby power amplifier is idle, the standby power amplifier is13
directly called to continue broadcasting.14
(2) If the power amplifier is already occupied by the main amplifier A, the main amplifier B is compared with the15
main amplifier A for priority comparison.16
The priority of main amplifier B is lower than that of main amplifier A. Therefore, main amplifier B cannot call17
the standby amplifier. The main amplifier B can only stand still and show "failure" or "overheating".18
The priority of the main power amplifier B is higher than that of the main power amplifier A, and the main power19
amplifier B directly seizes the standby power amplifier. Main amplifier B shows "self-tuning."20
After the main power amplifier Aloses its standby power amplifier, it shows "failure" or "overheating" at rest, and21
the main power amplifier A stops outputting. This is an occupancy process.22
After channel B takes up the standby power amplifier, it assigns its own volume value to the standby amplifier.23
The power amplifier uses this volume value to control its own affiliation, so the volume does not change during24
the whole process. Channel B is idle and its volume drops to zero.25
(4) When the original affiliation of channel B is restarted, normal operation can be resumed. Channel B26
automatically releases the standby amplifier. Re-allocate the work of the power amplifier. The standby power27
amplifier is reoccupied by the current highest priority fault channel. This is the release process.28