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Product description:
VFD Operating instructions：
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.
Never exceed 5V , 5V/2A is recommended.
Please use a regular USB charger for power. Please do not use computer USB power supply.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 keyUP+DOWN -2 Seconds
A.（In the spectrum mode）
The external ports are switched on or off (including infrared interface, audio source selection interface, volume motor control interface, volume key interface, standby control interface).
B.（In the clock mode ）
Switch the clock display effect.
UP+DOWN+OK -2 Seconds，Enter the screen self-test program, press the OK button 1 second to exit.
UP+DOWN+OK-5 Seconds，Enter infrared learning function, press OK button to exit in 1 second
UP+DOWN+OK-10 Seconds，Infrared code recovery factory settings (the default is Tmall infrared remote control).
7. Long press button
UP - Clock mode（or standby mode）Brightness increase
(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）Brightness reduction
Speed setting mode: (In normal mode, press the button for 2 seconds 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.
Important notes：
1.Because of the working conditions of VFD, there is a DC high voltage of about 38V, so dont 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.
The spectrum center frequency band is shown in the figure.
Package included:
1PC
Return Policy
If the product you receive is not as described or low quality, the seller promises that you may return it before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe) and receive a full refund. The return shipping fee will be paid by you. Or, you can choose to keep the product and agree the refund amount directly with the seller.N.B.: If the seller provides the "Longer Protection" service on this product, you may ask for refund up to 15 days after order completion.
Seller Service
On-time Delivery: If you do not receive your purchase within 60 days, you can ask for a full refund before order completion (when you click "Confirm Order Received" or exceed confirmation timeframe).Aiyima Level 15 Indicator Case Deals Vu Agc Board Spectrum Fantastic Audio Meter Mode Speed
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