Nobsound AK2515 Audio Spectrum VFD Display User Manual

1. Introducció

This manual provides detailed instructions for the assembly, setup, operation, and maintenance of your Nobsound AK2515 Audio Spectrum VFD Display. Please read this manual thoroughly before using the device to ensure proper functionality and to maximize your user experience.

2. Contingut del paquet

Verifiqueu que tots els elements que s'enumeren a continuació s'inclouen al vostre paquet. Si falta algun element o hi ha algun malmès, poseu-vos en contacte amb l'atenció al client.

1x AK2515 Audio Spectrum Analyzer Board
2x Acrylic Boards (for casing)
1x cable d'àudio de 3.5 mm
1x USB-DC Power Cable
1 cable de 23.5 mm
1x Set of Mounting Screws (with spare)

Package contents including main board, acrylic panels, cables, and screws. — Figure 2.1: Contents of the Nobsound AK2515 package. Includes the main circuit board, two acrylic panels for the enclosure, a 3.5mm audio cable, a USB-DC power cable, a 23.5mm cable, and a set of screws for assembly.

3. Instruccions de muntatge

The main board and acrylic boards are packaged separately. Assembly is straightforward and requires only a few screws.

Desembaleu tots els components amb cura.
Identify the main circuit board and the two acrylic panels.
Align the acrylic panels with the main board, ensuring the display faces outwards and the input/output ports are accessible.
Secure the acrylic panels to the main board using the provided screws. Use the small L-shaped hex wrench if necessary.

Assembled Nobsound AK2515 unit with cables connected. — Figure 3.1: The Nobsound AK2515 unit after assembly, showing connected audio and power cables.

4. Característiques

Accurate Music Spectrum Analyzer and Clock Display: Features a 25x15 high-resolution dedicated VFD display, ensuring accuracy across various frequency bands. An integrated SD3078 crystal oscillator provides high-precision clock display with an accuracy of ±5ppm, resulting in a monthly error of less than 10 seconds.
Wide Frequency Range Display and 3.5mm AUX/MIC Input: Supports a frequency sweep from 20 Hz to 20 KHz, allowing for precise frequency point testing. Equipped with a 3.5mm AUX input and a high-sensitivity microphone pickup, enabling both wired and wireless connections to easily detect subtle sound changes.
Special AGC Algorithm and Customizable Output Curves: A unique AGC algorithm ensures ideal visual effects across a wide range of input signal levels, preventing non-display for low signals and full-screen display for high inputs. Gain can be switched between -10/-5/-3/-1/0dB. Three display modes are available: Real Output, Smooth Output I, and Smooth Output II, providing accurate and high-level display effects for various usage scenarios.
Multiple Adjustable Items and Display Effects: Brightness, main light column fall speed, hold time, and peak fall speed can be individually adjusted. Choose freely from 5 music spectrum display modes and 2 clock display modes. All settings are saved with power-off memory, eliminating the need for re-configuration after restarting.

Nobsound AK2515 displaying both spectrum analysis and clock time. — Figure 4.1: The VFD display showing both audio spectrum analysis and a digital clock, highlighting its dual functionality.

Nobsound AK2515 with 3.5mm AUX input and microphone pickup indicated. — Figure 4.2: The Nobsound AK2515 unit demonstrating its 3.5mm AUX input for wired audio sources and its built-in microphone pickup for wireless sound detection.

Diagram illustrating AGC algorithm and different output curves on the Nobsound AK2515. — Figure 4.3: Visual representation of the AGC algorithm and the three customizable output curves (Real Output, Smooth Output I, Smooth Output II) available on the Nobsound AK2515.

Various display modes and effects of the Nobsound AK2515. — Figura 4.4: Examples of the five music spectrum display modes and two clock display modes, showcasing the adjustable visual effects of the Nobsound AK2515.

Nobsound AK2515 demonstrating frequency division, gain curve, and noise filtering. — Figure 4.5: The Nobsound AK2515 in an operational setting, illustrating its frequency division, gain curve, and noise filtering capabilities for enhanced visual clarity.

5. Configuració

5.1 Connexió d'alimentació

Connect the USB-DC power cable to the 5V DC IN port on the device and plug the other end into a compatible USB power source (e.g., a 5V USB adapter, computer USB port).

5.2 Entrada d'àudio

The AK2515 supports two types of audio input:

Entrada AUX de 3.5 mm: Use the provided 3.5mm audio cable to connect your audio source (e.g., smartphone, computer, audio player) to the 3.5mm AUX input port on the device. This is suitable for direct, wired audio signals.
Recollida del micròfon: The device has a built-in high-sensitivity microphone for wireless sound detection. This allows the display to react to ambient sounds without a direct cable connection.

Nobsound AK2515 showing input ports and control buttons. — Figura 5.1: posterior view of the Nobsound AK2515, indicating the 3.5mm AUX input, microphone pickup hole, DC 5V IN (Type-C) ports, and control buttons (Up, OK, Down).

6. Funcionament

The device is controlled using the 'Up', 'OK', and 'Down' buttons located on the unit.

6.1 Navegació bàsica

'Up' Button: Navigates through menu options or increases values.
'Down' Button: Navigates through menu options or decreases values.
Botó 'D'acord': Selecciona una opció o confirma una configuració.

6.2 Modes de visualització

The AK2515 offers 5 music spectrum display modes and 2 clock display modes. Use the navigation buttons to cycle through and select your preferred mode.

6.3 Paràmetres ajustables

You can adjust various display parameters to suit your preferences:

Brillantor: Adjust the overall display intensity.
Main Light Column Fall Speed: Controls how quickly the main spectrum bars descend.
Temps de retenció: Sets the duration for which peak values are held on the display.
Peak Fall Speed: Controls how quickly the peak indicators descend.
Guany: Adjust the input sensitivity between -10/-5/-3/-1/0dB to optimize visual response for different audio levels.

All settings are saved automatically due to the power-off memory function, so you do not need to reconfigure them after restarting the device.

7. Especificacions

Paràmetre	Valor
Marca	Nobsound
Número de model	PJ454 (AK2515)
Max Supply Voltage	5 Volts
Min Supply Voltage	5 Volts
Recompte de canals	15
Resposta de freqüència	20 Hz - 20 kHz
Precisió del rellotge	±5ppm (monthly error < 10 seconds)
Tipus de visualització	VFD (Vacuum Fluorescent Display)
Resolució de visualització	25 x 15

8. Solució De Problemes

Sense pantalla: Ensure the power cable is securely connected to a 5V power source. Check if the device is turned on.
No Audio Reaction: Verify that the audio source is playing and connected correctly to the 3.5mm AUX input, or that the microphone is not obstructed if using MIC pickup. Adjust the gain setting if the input signal is too low.
Visualització de l'hora incorrecta: Use the navigation buttons to enter clock settings and adjust the time.
Display Appears Dim: Adjust the brightness setting using the control buttons.

9. Manteniment

To ensure the longevity and optimal performance of your Nobsound AK2515, follow these maintenance guidelines:

Mantingueu el dispositiu net netejant-lo amb un drap suau i sec. Eviteu utilitzar productes de neteja o dissolvents abrasius.
No exposeu el dispositiu a temperatures extremes, humitat o llum solar directa.
Eviteu deixar caure o sotmetre el dispositiu a forts impactes.
Assegureu-vos una ventilació adequada al voltant del dispositiu per evitar el sobreescalfament.

10. Garantia i Suport

Nobsound products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the contact information provided with your purchase or visit the official Nobsound weblloc web. Si us plau, conserveu el comprovant de compra per a reclamacions de garantia.

Nobsound AK2515