VFD music spectrum Electrical Characteristics:
Input Voltage: 5V Type-C/12VDC
Sleep current: 0.03A (5V)
Working current: 0.3-08A (5V)
Input channel: Audio input X1
Frequency Response: 600Hz-20KHz
Input Impedance: 50kOhm
Dimensions LWH: 176x50x28mm
Screen material: glass
Shell material: acrylic PMMA
MCU: STM32F103
Display resolution: 25 segments and 15 levels
Option Description:
MODE??Display mode selection 0-10
GAIN - gain setting
Range: 0-19 The gain is gradually increased, the default value: 0;
LEARN??Noise learning setting, press up/down to enter noise learning mode, the bottom display
A horizontal line, any sound produced during this process will be sampled as noise, saved, and will be filtered out as much as possible when actually displayed.
SPEED??speed setting, 0-4 from slow to fast, the default value is 2;
SLEEP??Sleep setting, 0: no sleep; 1: display the clock when quiet; 2: close when quiet;
Sensitivity -
1. Adjustment of the back input attenuation potentiometer (for audio cable)
2. The GAIN option adjusts the internal gain (applicable to the pickup mode)
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Precautions:
1. Please connect the power supply according to the specified parameters, so as not to damage the motherboard, please use the power supply certified by the relevant agencies;
2. There is high voltage in the machine, and it is forbidden to touch the exposed part during use;
3. Do not immerse in water, or use in conditions with humidity higher than 90%, only indoor or car use;
4. Do not use any solvent or liquid other than anhydrous alcohol to wipe the screen;
5. Glass vacuum device, no vibration;