1. مقدمه
The Douk Audio VFD253 is a versatile device integrating an audio spectrum analyzer, a Bluetooth 5.0 receiver, and a 3.5mm AUX selector. It features a high-resolution VFD display and offers multiple audio input options, including microphone pickup. This manual provides detailed instructions for setting up and operating your VFD253 to ensure optimal performance and enjoyment.
2. ویژگی های محصول
- VFD Audio Spectrum Analyzer: Utilizes a dedicated green VFD display screen with 25 × 15 high resolution for accurate frequency band visualization.
- Bluetooth Receiver & Audio Switcher: Supports Bluetooth 5.0 and two 3.5mm AUX inputs, alongside microphone pickup. Compatible with phones, PCs, game players, ampمدافعان حقوق و سخنرانان
- High-Precision Clock: Features an RX8025T built-in crystal oscillator for high clock accuracy (within ±3ppm year error).
- Wide Frequency Range & AGC Display: Supports an 80Hz-16KHz frequency range with high-precision display. The special AGC algorithm and customized output curve ensure ideal visual effects across varying input signal levels.
- تنظیمات نمایشگر قابل تنظیم: Allows adjustment of main light column falling speed, peak holding time, peak falling speed, brightness (5 levels + auto), and gain (5 levels).
- حالت های نمایش چندگانه: Offers 5 music spectrum display modes and 2 clock display modes.
- حافظه خاموش: All settings are saved automatically and retained after power-off.
- کنترل از راه دور: Provides convenient adjustment of all settings and real-time monitoring of music level status.
- طراحی بادوام: Constructed with CNC machined aluminum and transparent acrylic case for both durability and aesthetic appeal.
3. محتویات بسته
- 1 × VFD253 Audio Spectrum Analyzer
- 1 × USB Cable (Type-C)
- 1 × کنترل از راه دور
- 2 × Anti-slip Pads (for bottom placement)
- 1 × دفترچه راهنمای کاربر
4. محصول تمام شدview
The VFD253 unit features a clear VFD display on the front and various input/output ports on the rear for versatile connectivity.
The device integrates multiple functions, serving as an audio spectrum analyzer, a Bluetooth receiver, an audio switcher, and a high-precision clock. The display dynamically visualizes audio signals or shows the current time.
۱. دستورالعملهای راهاندازی
- اتصال برق: Connect the provided USB Type-C cable to the DC 5V input port on the rear of the VFD253 and plug the other end into a suitable 5V power adapter (not included).
- ورودی صدا (سیمی):
- For external audio sources (e.g., phone, PC, amplifier), use a 3.5mm audio cable to connect your source to either the IN1 or IN2 3.5mm AUX input ports on the rear panel.
- Note: 3.5mm AUX1 and 3.5mm AUX2 cannot be used simultaneously. Select one audio source at a time.
- For ambient sound visualization, the built-in microphone pickup can be used.
- Audio Input (Bluetooth):
- Ensure the VFD253 is powered on.
- Select Bluetooth mode using the audio source selection button on the front panel or the remote control.
- On your device (e.g., smartphone, tablet), search for Bluetooth devices and select "VFD253" to pair.
- خروجی صدا: If you wish to pass the audio signal through the VFD253 to another device (e.g., headphones, amplifier), connect a 3.5mm audio cable from the 3.5mm AUX output port on the rear panel to your desired output device.
- قرار دادن: Attach the two anti-slip pads to the bottom of the unit for stability. Place the VFD253 on a stable, flat surface.
6. دستورالعمل های عملیاتی
6.1. عملیات پایه
- روشن/خاموش برق: Press and hold the "Audio source selection / Power switch" button on the front panel or use the power button on the remote control.
- انتخاب منبع صوتی: Briefly press the "Audio source selection / Power switch" button on the front panel or the dedicated input selection buttons on the remote (MIC / Bluetooth / IN1 / IN2) to cycle through available audio inputs.
- تغییر حالت: Use the "Mode -" and "Mode +" buttons on the front panel or the remote control to switch between music spectrum display modes and clock display modes.
6.2. حالت های نمایش
The VFD253 offers two main display categories: music spectrum and clock.
- Music Spectrum Display: Features 5 distinct visual modes to represent audio frequencies.
- نمایش ساعت: Offers 2 different clock display styles.
- حالت خودکار: The device can automatically switch between music spectrum display (when music is detected) and clock display (when no music input is present).
6.3. Adjusting Settings (Using Remote Control)
The remote control provides comprehensive access to all adjustable settings.
- روشنایی: Adjust the display brightness through 5 levels or enable auto-adjustment.
- سود: Modify the input gain across 5 levels to optimize display sensitivity for different audio sources.
- Spectrum Parameters: Independently adjust the falling speed of the main light column, the peak holding time, and the peak falling speed to customize the visual response.
- تنظیمات ساعت: Set the time and date as needed. Refer to the remote control's specific buttons for time adjustment.
7. مشخصات
| پارامتر | ارزش |
|---|---|
| صفحه نمایش | نمایشگر فلورسنت خلاء (VFD) |
| قطعنامه | 25 × 15 |
| Frequency Range Supported | 80 هرتز - 16 کیلوهرتز |
| نمایش آیتم | Music Spectrum / Clock |
| ورودی سیگنال صوتی | MIC / Bluetooth 5.0 / 2 groups of 3.5mm AUX |
| خروجی سیگنال صوتی | 1 group of 3.5mm AUX |
| حالت کار | Auto mode (spectrum with music, clock without music) / Clock display mode (always) |
| Clock Display Modes | 2 نوع |
| Music Spectrum Display Modes | 5 نوع |
| Music Display Mode | AGC + customized output curve (Real output / Smooth output) |
| Adjustable Items | Main light column falling speed / Peak holding time / Peak falling speed |
| تنظیم روشنایی | 5 levels + auto adjustment |
| تنظیم سود | 5 سطح |
| عملکرد حافظه خاموش | پشتیبانی می شود |
| کنترل از راه دور | پشتیبانی می شود |
| جلد کارtage | DC 5 ولت |
| ابعاد (W*D*H) | 184*75*66mm / 7.24*2.95*2.60in |
| وزن خالص | 322 گرم / 0.71 پوند |
| وزن بسته بندی | 500 گرم / 1.10 پوند |
8 عیب یابی
- بدون برق: Ensure the USB Type-C cable is securely connected to both the VFD253 and a working 5V power source. Try a different USB cable or power adapter.
- No Audio Spectrum Display:
- Check if an audio source is playing and connected correctly (wired AUX or Bluetooth).
- Verify the correct input source is selected on the VFD253.
- Adjust the gain setting using the remote control to increase sensitivity.
- If using the microphone, ensure there is ambient sound for pickup.
- مشکلات اتصال بلوتوث:
- Ensure the VFD253 is in Bluetooth pairing mode.
- بلوتوث را در دستگاه مبدا غیرفعال و دوباره فعال کنید.
- Move your source device closer to the VFD253 to improve signal strength.
- Forget the device on your source and attempt to re-pair.
- نمایش نادرست زمان: Use the remote control to set the correct time. Refer to the remote control's specific buttons for time adjustment.
- کنترل از راه دور پاسخ نمی دهد:
- باتریهای کنترل از راه دور را بررسی و تعویض کنید.
- Ensure there are no obstructions between the remote and the VFD253's IR receiver.
9. تعمیر و نگهداری
- تمیز کردن: Use a soft, dry cloth to clean the unit. Avoid using harsh chemicals or abrasive materials that could damage the display or casing.
- ذخیره سازی: در صورت عدم استفاده طولانی مدت، دستگاه را در جای خشک و خنک و دور از نور مستقیم خورشید و دمای بالا نگهداری کنید.
- رسیدگی: Handle the unit with care to prevent physical damage, especially to the VFD display.
10. گارانتی و پشتیبانی
For warranty information and technical support, please refer to the documentation included with your purchase or visit the official Douk Audio webرسید خرید خود را به عنوان مدرک خرید برای درخواستهای گارانتی نگه دارید.
