Audiophony BM-DESK Portable Loop Amplifier User Guide

1. Safety Information

Important safety information

This unit is intended for indoor use only. Do not use it in wet, or extremely cold/hot locations. Failure to follow these safety instructions could result in fire, electric shock, injury, or damage to this product or other property.

Any maintenance procedure must be performed by an authorized technical service. Basic cleaning operations must thoroughly follow safety instructions.

This product contains non-isolated electrical components. Do not undertake any maintenance operation when it is switched on as it may result in electric shock.

Symbols Used

• [Important Safety Precaution] symbol signals an important safety precaution.
• [Warning: Risk to user's physical integrity or product damage] symbol signals a risk to the user's physical integrity. The product may also be damaged.
• [Caution: Risk of product deterioration] symbol signals a risk of product deterioration.

CAUTION: RISK OF ELECTRIC SHOCK DO NOT OPEN

This unit contains no user-serviceable parts. Do not open the housing or attempt any maintenance by yourself. Contact competent technical service for maintenance. To prevent electrocution risks, do not use multi-sockets, power cord extensions, or connecting systems without ensuring they are perfectly isolated and defect-free.

Sound Levels

Audio systems can deliver sound pressure levels (SPL) harmful to human health when exposed for long periods. Do not stay in close proximity of operating speakers.

Environmental Protection

HITMUSIC supports environmental protection and only commercializes clean, ROHS compliant products.

This product is made of recyclable materials. Do not dispose of it in household waste. Take it to a selective collection center. Authorized service centers will take back your device at the end of its life for environmentally compliant destruction.

For more information, visit http://www.hitmusic.fr/directives-deee.php.

Instructions and Recommendations

1. Read Instructions: It is advised to read all operating and functional instructions before using the device.
2. Keep Instructions: It is advised to keep the operating and functional instructions for future reference.
3. Consider Warnings: It is advised to take into account all warnings and operating instructions.
4. Follow Instructions: It is advised to follow all operating and usage instructions carefully.
5. Water and Humidity: Do not use this device near water (e.g., bathtub, sink, basin) or in humid environments or near swimming pools.
6. Installation: Do not place the device on unstable furniture, tripods, supports, or tables. Use only manufacturer-recommended or supplied supports. Move furniture with the device on it cautiously.
7. Ceiling or Wall Installation: Contact your dealer before any ceiling or wall installation.
8. Ventilation: Ensure ventilation openings are not obstructed to prevent overheating and damage. Do not place on soft surfaces like beds or sofas. Do not place in closed, non-ventilated areas unless proper ventilation is provided.
9. Heat Exposure: Keep the product away from heat sources like radiators, stoves, or amplifiers.
10. Power Supply: Use only the voltage indicated on the device's label. Consult your dealer or electricity company if unsure.
11. Power Cords Protection: Route power cords to prevent them from being walked on or pinched, especially at plugs and exit points.
12. Cleaning: Unplug the device before cleaning. Use a damp cloth. Do not immerse in water.
13. Long Periods of Non-Use: Disconnect the power cord if the device will not be used for an extended period.
14. Liquids or Objects Penetration: Do not allow objects or liquids to enter the device through openings, as this may cause fire or electric shock.
15. Service Requirements: Contact qualified service personnel if the power cord/plug is damaged, liquid/objects have spilled into the device, the device has been exposed to rain/water, it does not operate normally, or it has been damaged.
16. Inspection/Maintenance: Do not attempt self-service. Refer all servicing to qualified personnel.
17. Operating Environment: Operate between +5°C to +35°C with relative humidity below 85% (vents unobstructed). Avoid poorly ventilated, very humid, or hot/sunny locations.

2. Introduction

The portable magnetic loop is a versatile, mobile solution that fits perfectly on desks and can be moved easily. It is ideal for small group conversations, typically two people, in small spaces like offices.

3. Components

The BM-DESK includes the following components:

• 1. Sticker: "space for people with hearing loss" [Hearing Aid T-Coil Mode]
• 2. Front Cover
• 3. Induction Loop Antenna
• 4. Battery Slot
• 5. Battery Cover
• 6. BM-DESK Base

Diagram Description: An exploded view shows the components of the BM-DESK, including the base, antenna, battery compartment, and covers. A symbol indicating hearing aid compatibility is also visible.

4. Charging the Portable Magnetic Loop

Note: Fully charge the loop before first use.

1. Connect the power cable to the mains socket.
2. Connect the power cable to the magnetic loop's "DC IN" socket on the back. The LED indicator will blink red while charging.
3. The indicator light will turn green when charging is complete.

5. Adjusting the Portable Magnetic Loop

Diagram Description: A person with a hearing aid is shown interacting with a contact person across a desk. The BM-DESK loop is placed between them. The diagram indicates the orientation of the device and the hearing aid symbol.

1. Place the portable magnetic loop between the hearing aid wearer and the second person on the desk.
2. Ensure the back of the loop (with the microphone) faces the person without a hearing aid.
3. The front of the device should face the person with hearing loss.
4. Press the central button (POWER) to turn on the device.
5. The system is now ready for use.

6. Rear Panel

Diagram Description: A view of the rear panel of the BM-DESK unit, showing various ports and controls labeled with numbers 1 through 11.

Rear Panel Components:

1. Headphone output potentiometer
2. Optional external headphones Jack
3. Power input
4. Charging indicator
5. Low battery indicator
6. Power button
7. Voice broadcast indicator
8. Operation indicator
9. Microphone capsule (internal)
10. External microphone jack
11. External microphone potentiometer

7. Meaning of the Indicators

Diagram Description: A simplified representation of the indicator LEDs on the BM-DESK, labeled 1 through 4.

• 1. Battery charging: Indicator light for charging status.
• 2. Battery low: Indicator light for low battery level.
• 3. Output current: Indicator for audio output.
• 4. Power supply: Indicator for power status.

8. Usage

Once the magnetic loop is turned on, you can start your conversation normally.

In normal operation, if the LED (indicator 3) lights red when you speak, it indicates the system is working.

Troubleshooting: If the prosthesis wearer does not pick up a clear signal:

1. Ensure the portable magnetic loop is fully charged.
2. Adjust the position of the loop on the desk. The hearing aid wearer should be no more than 1.1 meters from the loop.
3. Ensure the wearer has properly engaged the T-position [Hearing Aid T-Coil Mode] of their hearing aid.
4. Ask the wearer to check the sound volume settings on their hearing aid.

If the above steps are followed and the wearer still cannot hear a clear signal, it may be due to:

• A failure of the loop.
• A defect in the wearer's hearing aid.
• The wearer's hearing aid coil is not activated.

9. Additional Connections

9.1 External Microphone

If more than two people are involved in a conversation, it is recommended to use a loop adapted for larger areas. If one is not available, an external microphone can be used.

Diagram Description: Shows the rear panel with the EXT-IN jack and a diagram of an external microphone connection.

1. Insert the microphone jack into the EXT-IN socket on the back of the unit.
2. Place the external microphone towards those who are speaking.

9.2 External Sound Source

To connect the loop to a TV or other external sound source, use a jack/jack cable.

1. Insert the jack connection into the appropriate outlet on your sound source.
2. Insert the jack plug into the EXT-IN socket on the back of the portable loop.
3. Position the loop so it faces the wearer of the hearing instrument.

Note: The internal microphone is inactive when an external microphone is connected.

10. Important Information

• A green LED indicates the unit is functioning properly.
• If the battery is low, a yellow LED will blink.
• The device can be charged while in use.
• When the portable magnetic loop is not in use, it should be connected to its mains charger. This consumes very little power.

Note: The operating time with a full charge and not plugged into the mains is approximately 10 hours. Charging time is approximately 4 hours.

11. Technical Data