Douk Audio VFD253 helispektri analüsaatori Bluetooth 5.0 vastuvõtja kasutusjuhend

1. Sissejuhatus

The Douk Audio VFD253 is a versatile device that combines an audio spectrum analyzer, a Bluetooth 5.0 receiver, and a 3.5mm AUX audio switcher. It features a high-resolution VFD display for music spectrum visualization and a precise clock function. This manual provides detailed instructions for setting up and operating your VFD253 unit.

2. Põhiomadused

• VFD Audio Spectrum Analyzer: Utilizes a dedicated green VFD display screen with 25x15 high resolution for accurate frequency band visualization.
• Multi-Input Audio Switcher: Supports microphone pickup, Bluetooth 5.0, and two 3.5mm AUX inputs (IN1/IN2).
• High-Precision Clock: Features an RX8025T built-in crystal oscillator for accurate timekeeping (year error within 1 minute).
• Wide Frequency Range & AGC Display: 80Hz-16KHz frequency sweep with high-precision display. Special AGC algorithm and customized output curve ensure optimal visual effects across varying input signal levels.
• Customizable Display Effects: Adjustable gain, brightness, main light column falling speed, peak holding time, and peak falling speed. Offers 5 music spectrum display modes and 2 clock display modes.
• Väljalülitusmälu funktsioon: All settings are saved and retained after power cycling.
• Kaugjuhtimispult: Convenient remote for adjusting settings and monitoring real-time music levels.
• Vastupidav konstruktsioon: CNC machined aluminum and transparent acrylic case for a solid and aesthetically pleasing-kujundus.

Image: The VFD253 unit displaying its various functions, including music spectrum analysis, Bluetooth connectivity, and a digital clock.

3. Pakendi sisu

Palun kontrollige pakendit hoolikalt, et kõik esemed oleksid olemas:

• 1x VFD253 Audio Spectrum Analyzer
• 1x USB-kaabel (tüüp C)
• 1x kaugjuhtimispult (patareid ei kuulu komplekti)
• 2x Adhesive Pads (for bottom mounting)
• 1x kasutusjuhend

Image: A visual representation of the VFD253 package contents, showing the main unit, USB-C cable, remote, and adhesive pads.

4. Toote lõppview

Familiarize yourself with the main components and connection ports of the VFD253 unit.

Pilt: Detailne views of the VFD253, highlighting the "Mode -" and "Mode +" buttons, audio source selection/power switch on the top, and the 3.5mm AUX output, microphone pickup, 3.5mm AUX inputs (IN1, IN2), and DC IN (Type-C) on the rear panel.

Front/Top Panel Controls:

• Mode - / Mode + Buttons: Used to navigate through display modes and settings.
• Audio Source Selection / Power Switch: Selects input source and controls power.

Tagapaneeli ühendused:

• 3.5 mm AUX-väljund: Ühendab an amplifier or other audio output device.
• Mikrofoni vastuvõtt: Internal microphone for ambient sound analysis.
• 3.5mm AUX Input (IN1): First auxiliary audio input.
• 3.5mm AUX Input (IN2): Second auxiliary audio input.
• DC IN (Type-C): Toite sisendport.

5. Seadistamine

1. Toiteühendus: Connect the provided USB Type-C cable to the DC IN port on the rear of the VFD253 and plug the other end into a 5V power adapter (not included).
2. Helisisendi ühendus:
   • Mikrofon: The internal microphone will automatically pick up ambient sound.
   • Bluetooth 5.0: Power on the VFD253. On your audio source device (phone, PC), search for "VFD253" in the Bluetooth settings and pair.
   • 3.5 mm AUX sisend: Connect your audio source (e.g., PC, game player) to either the IN1 or IN2 3.5mm AUX input port using a 3.5mm audio cable. Märkus. Only one 3.5mm AUX input can be active at a time.
3. Heliväljundi ühendus (valikuline): If you wish to pass the audio signal through the VFD253 to another device (e.g., an amplifier), connect the 3.5mm AUX Output port to your receiving device.
4. Paigutus: Place the VFD253 on a stable surface. Use the included adhesive pads on the bottom if desired for added stability.

6. Kasutusjuhised

The VFD253 can be operated using the physical buttons on the unit or the included remote control.

6.1 Toite sisse-/väljalülitamine ja sisendi valimine

• Võimsus: Press the Audio Source Selection / Power Switch button on the unit or the power button on the remote to turn the device on or off.
• Sisend valik: Use the Audio Source Selection / Power Switch button on the unit or the dedicated input buttons (MIC, BT, IN1, IN2) on the remote to cycle through available audio sources.

6.2 Kuvareziimid

The VFD253 offers various display modes for both music spectrum and clock functions.

• Automaatrežiim: Displays the music spectrum when audio input is detected. Switches to clock mode when no music is playing.
• Kella kuvamise režiim: Always displays the time. Two types of clock displays are available.
• Music Spectrum Display: Five distinct music spectrum display modes are available.

Use the "Mode -" and "Mode +" buttons on the unit or the remote control to cycle through these display modes.

Pilt: ntamples of the five music spectrum display modes and two clock display modes available on the VFD253.

6.3 Adjustable Items

The following parameters can be adjusted for a personalized visual experience:

• Kasum: Adjusts the sensitivity of the spectrum display.
• Heledus: Controls the display intensity (5 levels + auto adjustment).
• Main Light Column Falling Speed: Adjusts how quickly the main bars fall.
• Peak Holding Time: Sets the duration for which peak levels are held on the display.
• Peak Falling Speed: Adjusts how quickly the peak indicators fall.

All adjustments are typically made via the remote control. Refer to the remote control's specific buttons for each function.

Image: The VFD253 unit positioned next to a laptop, with its remote control shown prominently, illustrating ease of use for adjusting settings.

6.4 AGC Display

The Automatic Gain Control (AGC) algorithm and customized output curve ensure consistent visual effects. This prevents the display from being too low when the input signal is weak or too high when the input signal is strong, providing an ideal visual representation across a wide dynamic range.

Image: The VFD253 displaying its spectrum, with a graph explaining the AGC mode's function in optimizing display for various input levels.

6.5 Videodemonstratsioon

Watch this video for a demonstration of the VFD Audio Spectrum Analyzer's various display modes and features.

7. Tehnilised andmed

8. Veaotsing

• Ekraani pole / Toidet pole:
  • Ensure the USB Type-C cable is securely connected to both the VFD253 and a working 5V power adapter.
  • Veenduge, et toiteadapter töötab korralikult.
• No Audio Spectrum Display:
  • Check that an audio source is actively playing.
  • Confirm the correct input source (MIC, Bluetooth, IN1, IN2) is selected on the VFD253.
  • If using AUX inputs, ensure the audio cable is properly connected and the source device's volume is adequate.
  • If using Bluetooth, ensure the VFD253 is paired and connected to your device.
  • Adjust the gain setting on the VFD253 if the input signal is too low.
• Vale aja kuvamine:
  • The manual does not specify how to set the clock. Typically, this is done via the remote control or specific button combinations. Refer to the remote control's buttons for time adjustment.
• Kaugjuhtimispult ei reageeri:
  • Veenduge, et patareid on õigesti sisestatud ja pole tühjad.
  • Point the remote directly at the VFD253 unit.
  • Remove any obstructions between the remote and the unit.

9. Hooldus

• Puhastamine: Use a soft, dry cloth to clean the unit. Avoid using harsh chemicals or abrasive materials.
• Hoiustamine: Hoidke seadet jahedas ja kuivas kohas, eemal otsesest päikesevalgusest ja äärmuslikest temperatuuridest.
• Käitlemine: Handle the unit with care to prevent damage to the VFD display or internal components.

10. Garantii ja tugi

For warranty information and technical support, please refer to the documentation included with your purchase or contact Douk Audio directly through their official website or customer service channels. Keep your purchase receipt for warranty claims.