1. Įvadas
The VIKEFON BTB002BL is a versatile 3-in-1 Bluetooth 5.0 audio adapter designed to enhance your audio experience. It functions as a Bluetooth Transmitter (TX), a Bluetooth Receiver (RX), and supports a direct wired Bypass connection. Featuring advanced Bluetooth 5.0 technology, a CSR8675 chip, aptX HD, and aptX Low Latency codecs, this device ensures high-fidelity audio transmission with minimal delay. It also includes NFC for quick pairing and offers an extended operating range.

Image 1.1: VIKEFON BTB002BL Bluetooth 5.0 Transmitter Receiver. This image displays the device from an angled front view, highlighting its dual antennas, LED indicators for RX, OPT, AUX, TX, HD, LL, SBC, and NFC logo, along with control buttons.
2. Pakuotės turinys
Prašome patikrinti, ar pakuotėje yra visi reikalingi daiktai:
- 1 x VIKEFON BTB002BL 3-in-1 Bluetooth 5.0 Transmitter Receiver
- 1 x Optical Digital Cable (1m)
- 1 x 3.5 mm garso kabelis (0.5 m)
- 1x RCA garso laidas
- 1x USB įkrovimo laidas
- 1 x Vartotojo vadovas

Image 2.1: What's in the Box. This image shows the main unit and all included accessories: RCA audio cable, optical cable, USB charging cable, 3.5mm audio cable, and the user guide.
3. Įrenginys baigtasview
Susipažinkite su įrenginio komponentais ir valdikliais:

Image 3.1: Device Ports and Controls. This diagram labels the Power switch (ON/OFF), Mode switch (TX/RX/Bypass), NFC Instant Connection area, LED indicators (RX, OPT, AUX, TX, HD, LL, SBC), Quick pairing mode button, Play/Pause button, Volume +/Next Track button, Volume -/Previous Track button, TX Input, DC 5V charging port, and RX Output ports.
- Maitinimo jungiklis: ON/OFF slider.
- Režimo jungiklis: Selects Transmitter (TX), Receiver (RX), or Bypass mode.
- NFC sritis: Greitam susiejimui su NFC palaikančiais įrenginiais.
- LED indikatoriai: Display current mode (RX/TX), audio input/output type (OPT/AUX), and active audio codec (HD/LL/SBC).
- Valdymo mygtukai: Quick pairing, Play/Pause, Volume Up/Next Track, Volume Down/Previous Track.
- Prievadai: TX Input (Optical/AUX), DC 5V (USB charging), RX Output (Optical/AUX).
4. Sąranka
4.1. Įrenginio įkrovimas
Before initial use, fully charge the device. Connect the supplied USB charging cable to the DC 5V port on the adapter and to a USB power source (e.g., computer USB port, USB wall adapter). The charging time is approximately 4.5 hours. The device can be used while charging.
4.2. Maitinimo įjungimas/išjungimas
Slide the Power Switch to the 'ON' position to power on the device. Slide it to 'OFF' to power off. The device will automatically enter sleep mode after 6 minutes without a connection to conserve battery.
5. Veikimo režimai
The VIKEFON BTB002BL supports three distinct operating modes: Transmitter (TX), Receiver (RX), and Bypass.
5.1. Siųstuvo (TX) režimas
In TX mode, the adapter transmits audio wirelessly from a non-Bluetooth device (e.g., TV, PC, iPod) to Bluetooth-enabled headphones or speakers.
- Slide the Mode Switch to 'TX'.
- Connect the adapter's TX Input to your audio source (TV, PC) using the appropriate cable (Optical or 3.5mm AUX).
- Įsitikinkite, kad jūsų „Bluetooth“ ausinės / garsiakalbiai yra susiejimo režime.
- The adapter will automatically search for and connect to nearby Bluetooth devices. The TX LED will illuminate, and the codec LED (HD, LL, or SBC) will indicate the active audio codec.

Image 5.1: Transmitter (TX) Mode. This image illustrates the TX mode, showing a TV/computer connected to the adapter, which then wirelessly transmits audio to two pairs of Bluetooth headphones and a Bluetooth speaker.
5.2. Imtuvo (RX) režimas
In RX mode, the adapter receives audio wirelessly from a Bluetooth-enabled device (e.g., smartphone, tablet) and outputs it to a non-Bluetooth audio system (e.g., wired speakers, home stereo).
- Slide the Mode Switch to 'RX'.
- Connect the adapter's RX Output to your audio system (speakers, amplifier) using the appropriate cable (Optical, 3.5mm AUX, or RCA).
- Enable Bluetooth on your smartphone or tablet and search for 'VIKEFON BTB002BL'.
- Select the device to pair. The RX LED will illuminate, and the codec LED will indicate the active audio codec.

Image 5.2: Receiver (RX) Mode. This image shows a smartphone wirelessly connected to the adapter in RX mode, which is then wired to a traditional speaker system.
5.3. Bypass Mode (Wired Connection)
Bypass mode allows for a direct wired connection between your audio source and output device, bypassing the Bluetooth functionality. This is useful when Bluetooth is not needed or when you want to quickly switch between wired and wireless without re-cabling.
- Slide the Mode Switch to 'BYPASS'.
- Connect your audio source (e.g., TV) to the adapter's TX Input.
- Connect your audio output device (e.g., soundbar, wired speakers) to the adapter's RX Output.
- Audio will pass through the adapter directly.
Refer to Image 5.2 for a visual representation of Bypass Mode, showing a TV connected to a soundbar via the adapter.
6. Poravimas ir prijungimas
6.1. „Bluetooth“ poravimas
Norėdami susieti su nauju įrenginiu:
- Set the adapter to TX or RX mode as required.
- Press and hold the 'Quick Pairing' button (often indicated by a double arrow icon) for 3 seconds until the relevant mode LED flashes rapidly.
- Enable Bluetooth on your target device (headphones, speakers, smartphone) and put it into pairing mode.
- Select 'VIKEFON BTB002BL' from the list of available devices.
- Once connected, the mode LED will become solid.
6.2. NFC Pairing (Receiver Mode Only)
For quick pairing in RX mode with NFC-enabled smartphones:
- Ensure the adapter is in RX mode and powered on.
- Įjunkite NFC savo išmaniajame telefone.
- Tap your smartphone near the NFC logo on the adapter.
- Patvirtinkite poravimo užklausą savo išmaniajame telefone.
6.3. Dual Stream (TX Mode) / Multi-Point (RX Mode)
The device supports connecting to two Bluetooth devices simultaneously:
- TX Mode (Dual Stream): After pairing with the first Bluetooth headphone/speaker, put the second device into pairing mode and press the 'Quick Pairing' button on the adapter again. The adapter will connect to both devices, allowing two users to listen to the same audio source.
- RX Mode (Multi-Point): The adapter can connect to two smartphones simultaneously. After connecting the first phone, connect the second phone. You can then switch between audio sources from either phone.
7. Audio Codecs
The VIKEFON BTB002BL supports several audio codecs, indicated by the LEDs on the device:
- aptX-HD: Provides high-definition audio quality, offering a superior listening experience. For aptX HD to be active, both the adapter and the connected Bluetooth device must support aptX HD.
- aptX Low Latency (aptX LL): Minimizes audio delay, ensuring perfect synchronization between video and audio, ideal for watching TV or movies. Both devices must support aptX LL for this codec to be active.
- SBC: The standard Bluetooth audio codec, offering basic audio quality. This codec will be used if aptX HD or aptX LL are not supported by both connected devices.

Image 7.1: Audio Codec Features. This image highlights the CSR8675 chip, Bluetooth 5.0 technology, aptX HD for high-fidelity sound, aptX Low Latency for no lip sync delay, and 24-bit DAC for enhanced listening.
8. Priežiūra
8.1. Valymas
Wipe the device with a soft, dry cloth. Do not use liquid cleaners or abrasive materials, as they may damage the surface or internal components.
8.2. Akumuliatoriaus priežiūra
Norėdami pailginti akumuliatoriaus veikimo laiką, venkite dažnai visiškai iškrauti įrenginį. Jei ilgesnį laiką nenaudosite, įkraukite akumuliatorių maždaug iki 50 % ir vėl įkraukite kas kelis mėnesius.
8.3. Sandėliavimas
Laikykite prietaisą vėsioje, sausoje vietoje, apsaugotoje nuo tiesioginių saulės spindulių ir ekstremalių temperatūrų.
9. Problemų sprendimas
If you encounter issues with your VIKEFON BTB002BL, please refer to the following common problems and solutions:
- Nėra garso:
- Įsitikinkite, kad įrenginys įjungtas ir veikia tinkamu TX/RX režimu.
- Check all audio cables are securely connected.
- Verify that the connected Bluetooth device (headphones/speakers/smartphone) is powered on, paired, and its volume is adjusted.
- Confirm the audio source is playing and its volume is up.
- For optical connections, ensure your audio source is set to PCM/LPCM output.
- Nepavyksta sujungti:
- Ensure the adapter is in pairing mode (mode LED flashing rapidly).
- Ensure the target Bluetooth device is in pairing mode.
- Perkelkite įrenginius arčiau vienas kito.
- Išvalykite ankstesnius susiejimo įrašus abiejuose įrenginiuose ir bandykite dar kartą.
- Restart both the adapter and the target Bluetooth device.
- Short Range/Intermittent Connection:
- Bluetooth range can be affected by physical obstacles (walls, furniture) and interference from other wireless devices (Wi-Fi routers, cordless phones).
- Sumažinkite atstumą tarp adapterio ir prijungto „Bluetooth“ įrenginio.
- Minimize interference by moving other wireless devices away.
- Garso vėlavimas (lūpų sinchronizavimo problemos):
- Ensure both the adapter and your Bluetooth headphones/speakers support aptX Low Latency (aptX LL). The 'LL' LED should be illuminated.
- If aptX LL is not supported by one of the devices, some delay may occur.
- Senkančios baterijos priminimas:
- When the battery level drops below 20%, the device will provide a low battery reminder. Connect the USB charging cable to recharge.
10. Specifikacijos
| Prekės ženklas | VIKEFONAS |
| Modelis | BTB002BL |
| Bluetooth versija | 5.0 |
| Bluetooth lustas | CSR8675 |
| „Bluetooth Pro“files (RX) | A2DP, AVRCP |
| „Bluetooth Pro“files (TX) | A2DP |
| Veikimo diapazonas | Up to 80m (262ft) unobstructed |
| Darbo laikas (RX) | Iki 20 valandų |
| Darbo laikas (TX) | Iki 15 valandų |
| Įvesties tomastage/srovė | DC 5V |
| Įkrovimo laikas | Maždaug 4.5 valandos |
| Baterija | 1000 mAh įkraunama ličio jonų baterija |
| Input/Output Connection | SPDIF (Optical), 3.5mm Stereo Audio Interface |
| Garso kodekai | „aptX HD“, „aptX“ maža delsa, „aptX“, SBC |
| Svoris | 200g |
| Matmenys | 125.5 x 75.5 x 24 mm |
| Medžiaga | Plastikiniai |
11. Garantija ir palaikymas
11.1. Informacija apie garantiją
This product comes with a standard manufacturer's warranty. Please refer to the warranty policy provided at the point of purchase or contact your retailer for specific details regarding warranty coverage and duration.
11.2. Pagalba klientams
For technical assistance, troubleshooting not covered in this manual, or warranty claims, please contact VIKEFON customer support through the retailer's platform or the official VIKEFON website. Please have your model number (BTB002BL) and purchase information ready when contacting support.