Hansong BM240 LCD Monitor User Manual
- June 5, 2024
- HANSONG
Table of Contents
Hansong BM240 LCD Monitor User Manual
Approval List
Document History
Document Confidentiality
For internal use only
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, Acronyms, Symbols and Abbreviations
2 General Application Description (Usage Scenarios)
For this Product, It is enclosed in a box.
3 General Product Overview
3.1 ID Drawings
Front Panel:
- AUX input
- Optical input
- Service (soft wear update)
- BT/Pair button
- 100-240V~50/60Hz,80W (Power in)
Rear Panel:
- Dial switch(choose a different EQ)
- Output terminal( left and right)
Remote:
- Mute
- Power
- Volume up
- Last
- Pause
- Next
- Volume down
- Aux source
- Optical source
- 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
3.3 Key Features and Performance
- Bluetooth input source, requires Distance greater than 10m in open distance.
- The pair bottom can set the bluetooth .
- The RGB LED indicate different states .
- 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 Analog-in
Aux input max 1.25V rms input, standby mode by audio signal detector .
4.3 BT-in
ATS2819 module, Can support BT5.0 .
4.4 DSP-functionality
The DSP(ADAU1761) functionality consists of the following features:
- Volume control
- EQ
4.5 Amplification
The AMP(TPA3116) is class D type, driving 4 ohms speakers.
4.6 User Interface
- output terminal (4 ohm loads can be connected and output 2X25W)
- AC in (100-240V~50/60Hz,80W )
- pair button (the remote control pair and reboot the BT)
- indication LED
- optical terminal 6: Dial switch (set different EQ)
Bottom
pair bottom : the remote control pair and factory reset. – Press and hold on
till blink red: factory reset.
indication LED
4.6.1 The buttons’ feature and led features.
5 Performance specifications
5.1 Audio Specifications
Test conditions: BM240 connected with 4 ohm load .
5.1.1 Power AMP Section (Test mode)
FCC regulatory 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 comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates uses and
can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television 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 following measures:
– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
-Consult the dealer or an experienced radio/TV technician for help
NOTE: The manufacturer is not responsible for any radio or TV interference caused by unauthorized modifications to this equipment. Such modifications could 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
licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science
and Economic Development Canada’s licence-exempt RSS(s). Operation is subject
to the following two conditions: (1) This device may not cause interference.
(2) This device must accept any interference, including interference that may
cause undesired operation of the device.
RF Exposure
This equipment complies with IC radiation exposure limits set forth for an
uncontrolled environment.