AK2515 VFD Music Audio Spectrum 15 Level Indicator VU Meter Screen For Amplifier

Specifications:
The input power :DC5V
Display material: Glass
Pcb size: 176 * 50mm
Display size: 160x40 mm. ( excluding protruding tracheal parts )
Display area size: about 133x25 mm.
Thickness of the whole plate: about 20mm
( excluding the protruding pin part of the component and the thickness of the film )

Features：
• Dedicated VFD spectrum display, Resolution 25 X 15.
• Support 32HZ-16KHZ frequency sweep , Ensure the accuracy of each band.
• The falling speed of the light bar, the holding time and the falling speed of the peak can be adjusted separately.
• Real output and smooth output I/ smooth output II selection
• Clock brightness can be adjusted 3 levels.
• Extended function interface（Infrared, sound source selection, volume motor control, volume key, volume display, standby control）
• Accurate clock display function (This function is entered after 10 seconds without signal input and key operation）.
（SD2405AL built-in crystal oscillator, the chip can ensure that the clock accuracy is + 5ppm (at 25 + 1 degrees Celsius), the annual error is less than 2.5 minutes）
• Software AGC + custom output curve, In order to ensure that the input signal in a large range of output effect is ideal.
• Custom frequency band display to ensure that even the 25 segment, can fully display the audio frequency range.

Importtant notes：
1. Because of the working conditions of VFD, there is a DC high voltage of about 38V, so don't touch the VFD pins when it is working.
2. Because of the characteristics of VFD, long working brightness will be attenuated, so it will become uneven, is a normal phenomenon.
3. Because the clock module is selected parts, if there is no clock module installed, then the relevant clock function instructions are invalid.
4. When there is no clock function, no signal input and button operation, will enter standby state and display standby characters, in the external port closed setting , after 1 minutes it will close the filament power supply and VFD high voltage. Enter deep standby status. Auto wakeup when there is a signal input or press button operation.
5. The light board can only receive front-end audio signals, such as audio output ports of mobile phones, computers, CD, MP3 players, DVD and other devices, and the input signal amplitude must be above 80 % of the audio devices and not controlled by the volume! Remember that it cannot be used to connect the output of the power amplifier ( connected to the loudspeaker )!

Package included:
1× Audio Spectrum Board
2× Acrylic Board
1× 3.5mm audio cable
1× Power cable
1× 3.5mm 1-TO-2 Plug
1Set × Matching screws and pillars

Specific operation:

Normal mode:

1. Single click

UP- Mode change

DOWN- Mode change

OK- Bottom line display or no in spectrum mode

2. Double-click

OK- Switching real / smooth I/ smooth II output

3. Three-click

OK- Menu effect switch, right -left transition / up - down transition / mid folding open

4. Four-click

OK- Volume display function on or off

5. Five-click

OK- Switch the extended port output level, high or low level

6. Composite key

UP+DOWN-2 Seconds

A.（In the spectrum mode）

The external ports are switched on or off(including infrared interface, audio sourceselection interface, volume motor controlinterface, volume key interface, standbycontrol interface).

B.（In the clock mode ）

Switch the clock display effect.

UP+DOWN+OK-2 Seconds，Enter the screen self-testprogram, press the OK button 1second to exit.

UP+DOWN+OK-5 Seconds，Enter infrared learningfunction, press OK button to exit in 1second

UP+DOWN+OK-10 Seconds，Infrared code recoveryfactory settings (the default is Tmallinfrared remote control).

7. Long press button

UP - Clock mode（or standby mode）Brightnessincrease

(Note, if you need to increase to the brightest level, press for about 10 seconds, if the standby brightness is too high, it will cause uneven of VFD, the highest brightness level is not recommended).

DOWN -Clock mode（or standby mode）Brightnessreduction

Speed setting mode:(In normal mode, press the button for 2seconds to enter, press the button for 2 seconds to exit) .

OK

a. The falling speed of the light bar (15 optional)

b. The holding time of the peak (15 optional)

c. The falling speed of the peak (15 optional)

d. Output selection (Real output / smooth I output/ smooth II output)Loop in these functions.

UP- Time increases, Speed decreases

DOWN- Time decreases, Speed increase

Clock Setting mode：(In normal mode, press the button for 5 seconds to enter, press the button for 2 seconds to exit) .

Single click

OK - Switching hours / min / sec / year / month / day

UP - Hours / minutes / sec / year / month / day increase.

DOWN - Hours / min / sec / year / month / day decrease.

Other function operation：

Factory default

OK -10 Seconds.