HANSONG BM240 User manual

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 1 / 11] [2019-12-06]
User manual
BM240
Version: Initiated by: Date: Reviewed by: Date:
V1.0 Burgess 20210104
pproval List
Function Name Date Signature
Group Leader
R&D Manager
Project Manager
Program Manager
SCM Manager
QA
Mana
g
e
r
Customer
Please copy locally
All rights reserved Reproduction in whole or in part without permission is prohibited

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 2 / 11] [2019-12-06]
Document History
Date Version Author Change
2020 01 04 V1 0 Burgess
Document Confidentiality
For internal use only

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 3 / 11] [2019-12-06]
1 INTRODUCTION
1.1 General Product Description
The “BM240” is an amplifier box for built-in power supply ,It Can play optical source ,
bluetooth source and Aux source music It includes a left and a right channel for
stereo There is a pair button and an indication of RGB lights and a dial switch for selecting a
different EQ
1.2 Definitions, cronyms, Symbols and bbreviations
Abbreviation Comment Abbreviation Comment
CRS Customer requirements
Specifications
dB Decibel: Unit of Sound Level
EMC Electro Magnetic Compatibility Hz Hertz: Unit of Frequency
LED
Light Emitting Diode
BSMI Bureau of Standards, Metrology and
Inspection
N/A Not Applicable SASO Saudi Arabian Standards Organization
Oct octave NOM Norma’s Officials Mexicans
TA Type Approval PC Polycarbonate
TBC To be confirmed ABS Acrylonitrile Butadiene Styrene
TBD To be defined POM Polyoxymethylene
ID Industrial Design CE Conformité Européenne
DV or DVT Design Verification Test FCC Federal Communications Commission
DM or DMT Design Maturity Test ODM Original Design Manufacturer
FM Frequency Modulation PSS&L Product Safety, Security & Liability
RMS Root Mean Square 50N 50 Newton
PHC Power Handling Capacity TR Trial Run
RH Relative Humidity TCMF Test Case Management File
ESD Electro Static Discharge PMPO Peak Music Power Output
S/N Signal to Noise Ratio IEC Intern Electro technical Commission
THD Total Harmonic Distortion Fo Resonance Frequency
EUT Equipment Under Test TPU Thermo Plastic Urethane
SoC Statement of Conformance SPL Sound Pressure Level
FR Flame Retardants HDMI High-Definition Multimedia Interface
OEM Original Equipment Manu fact HDCP High-bandwidth Digital Content Protect
&
Important remark CEC Consumer Electronics Control
FRS Functional Requirement Specification
Table 1 Definitions

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 4 / 11] [2019-12-06]
2 General pplication Description (Usage Scenarios)
For this Product, It is enclosed in a box

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 5 / 11] [2019-12-06]
3 General Product Overview
3.1 ID Drawings
Front Panel:
 AUX input
 Optical input
 Service (softwear updata)
 BT/Pair button
 100-240V~50/60Hz,80W (Power in)
Rear Panel:

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 6 / 11] [2019-12-06]
 Dial switch(choose a different EQ)
 Output terminal( left and right)

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 7 / 11] [2019-12-06]
Remote:
 Mute
 Power
 Volume up
 Last
 Pause
 Next
 Volume down
 Aux source
 Optical sourse
 BT source
 When pushing |<< on the remote for 2s BT pairing is turned OFF
 When pushing >>| on the remote for 2s BT pairing is turned ON
 When pushing the BT button on remote for 2s the device is disconnected from the phone currently paired
with the BM240, this allows a change in who is connected via remote
3.2 Functions
IN
PUTS
Q
uantity
USER INTERF CE
Digital
Audio Input
X
1
Optical
Analog Audio Input X1 AUX
P
ower supply
X1
AC Power
OUT
PUTS
USER INTERF CE
Speaker output X2 pair
2 X 25W
OTHER
USER INTERF CE

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 8 / 11] [2019-12-06]
3.3 Key Features and Performance
1 Bluetooth input source, requires Distance greater than 10m in open distance
2 The pair bottom can set the bluetooth
3 The RGB LED indicate different states
4 Remote control requires Distance greater than 10m in open distance
3.4 Special connectors & modes.
Debug/Tuning connector
A 6 pin connector will be present on the PCBA to allow the connection to the MCU for Debug and
Tuning purpose
Factory test mode
Set the dial switch as below picture
4 System Structure
4.1 Digital-in
Optical input can support a rate of 192Khz Don’t support Dolby and DTS only PCM 2 0
4.2 nalog-in
Aux input max 1 25V rms input, standby mode by audio signal detector
4.3 BT-in
ATS2819 moudle, Can support BT5 0
RGB LED X1 See user Interface part
Dial switch
X1
Choose different EQ
Bottom
X1
Pair bottom

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 9 / 11] [2019-12-06]
4.4 DSP-functionality
The DSP(ADAU1761) – functionality consists of the following features:
• Volume control
• EQ
4.5 mplification
The AMP(TPA3116) is class D – type, driving 4 ohms speakers
4.6 User Interface
1: output termina (4 ohm oads can be connected and output 2X25W)
2: AC in (100-240V~50/60Hz,80W )
3 ： pair button (the remote contro pair and reboot the BT)
4: indication LED
5 ： optica termina
6: Dia switch (set different EQ)
Bottom
pair bottom : the remote contro pair and factroy reset.
- Press and ho d on ti b ink red: factroy reset.
indication LED
LED
1x RGB LED
B
uetooth mode
B
ue
Optica
ORANGE
A
UX
GREEN
4.6.1 The buttons’ feature and led features.
Buttons:
Button name
Button operation
Feature
pair
button
S
hort
Press
Enter
the
remote control
pairing mode
P
ress
hold
on till blink red
factroy reset
LED:

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 10 / 11] [2019-12-06]
Led
Behavior
The meaning
RGB
Solid
R
ed
Standby mode
Solid Green UX source
Solid Orange OPT source
Solid Blue BT source
Blink Red fast Factory data reset
5 Performance specifications
5.1 udio Specifications
Test conditions: BM240 coneccted with 4 ohm load
5.1.1 Power MP Section (Test mode)
PARAMETER(aux in) SPECS
Continuous Average Power
4 ohms 1kHz
≥ 25W
THD
4 ohms 25W 1kHz
≤ 1%
S/N
25W 1kHz
≥ 80dB( A-weighted)
Frequency Response
20Hz - 20 kHz +/-0 5dB
CHANNEL SEPARATION
≥ 60db
S
ensitivity
800mv
PARAMETER(optica in) SPECS
Continuous Average Power
4 ohms 1kHz
≥ 25W
THD
4 ohms 25W 1kHz
≤ 1%
S/N
25W 1kHz
≥ 80dB( A-weighted)
Frequency Response
20Hz - 20 kHz +/-0 5dB
CHANNEL SEPARATION
≥ 60db
S
ensitivity
800mv
PARAMETER(BT in) SPECS
Continuous Average Power
4 ohms 1kHz
≥ 25W
THD
4 ohms 25W 1kHz
≤ 1%

HANSONG
汉桑（南京）科技有限公司
HANSONG
（
NANJING
）
TECHNOLOGY CO. , LTD.
[Product Specification] [ 11 / 11] [2019-12-06]
FCC regu atory conformance ：
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may cause
undesired operation.
NOTE: This equipment has been tested and found to comp y with the imits for a Class B digita device, pursuant to
part 15 of the FCC Ru es. These imits are designed to provide reasonab e protection against harmfu interference
in a residentia insta ation.
This equipment generates uses and can radiate radio frequency energy and, if not insta ed and used in accordance
with the instructions, may cause harmfu interference to radio communications. However, there is no guarantee
that interference wi not occur in a particu ar insta ation. If this equipment does cause harmfu interference to
radio or te evision reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the fo owing measures:
- Reorient or re ocate the receiving antenna.
- Increase the separation between the equipment and receiver.
-Connect the equipment into an out et on a circuit different from that to which the receiver is connected.
-Consu t the dea er or an experienced radio/TV technician for he p
NOTE: The manufacturer is not responsib e for any radio or TV interference caused by unauthorized modifications
to this equipment. Such modifications cou d void the user’s authority to operate the equipment.
RF Exposure
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment
IC regulatory conformance
This device complies with CAN ICES-003 (B)/NMB-003(B)
This device contains icence-exempt transmitter(s)/receiver(s) that comp y with Innovation, Science and Economic
Deve opment Canada's icence-exempt RSS(s). Operation is subject to the fo owing two conditions:
(1) This device may not cause interference.
(2) This device must accept any interference, inc uding interference that may cause undesired operation of the
device.
Cet apparei est conforme à a norme CAN ICES-003 (B)/NMB-003 (B)
Cet appareil contient des émetteurs / récepteurs exempt (s) de licence qui sont conformes aux RSS
exemptes de licence d'Innovation, Sciences et Développement économique Canada Son
fonctionnement est soumis aux deux conditions suivantes:
(1) Cet appareil ne doit pas provoquer d'interférences
(2) Cet appareil doit accepter toute interférence, y compris les interférences susceptibles de provoquer
un fonctionnement indésirable de l'appareil
RF Exposure
This equipment complies with IC radiation exposure limits set forth for an uncontrolled environment
Cet équipement est conforme aux limites d'exposition aux radiations de la IC définies pour un
environnement non contrôlé