AS128 Full Color RGB Music Spectrum Display Screen KTV Stage Led Rhythm Light 64 Mode | Instrument Parts & Accessories

AS128 Full Color RGB Music Spectrum Display Screen KTV Stage Led Rhythm Light 64 Mode | Instrument Parts & Accessories

Type 1: Single P4 Full color screen + control card

Type 2: Single P5 Full color screen + control card

Type 3: Double P4 Full color screen + control card

Type 4: Double P5 Full color screen + control card

Type 5: Double P4 Full color screen + control card + power supply

Type 6: Double P5 Full color screen + control card+ power supply

Type 7: Single P4 Full color screen + control card+ power supply

Type 8: Single P5 Full color screen + control card+ power supply

Type 9: AS128 Control card

Special note: This spectrum has no casing! This shop mainly sells DIY products. Fans with hands-on ability can DIY by themselves.Main features of AS128 spectrum:1. The 32-bit high-speed ARM processor is adopted, and the spectrum display is precise, accurate and beautiful, which can be used for frequency sweep test;2. Two kinds of signal acquisition methods: electret microphone and line input;3. With professional-level AGC (automatic gain control) and wide audio adaptation range, which not only guarantees the accuracy and effect of the frequency spectrum, but also does not cause the volume to be too small to be displayed, and the volume is displayed on a full screen;4. Up to 64 color mode combinations, setting with power-down memory;5. Double button design, 1 control mode and 1 control color.Instructions for use:This control card can control 75 interface 32 * 64 dots P4 P5 P6 full color dot matrix module, this card supports a maximum of 2 screens cascade, and can also work in a single screen; The connection sequence of the display is as shown in the figure below. Pay attention to the direction of the arrow on the display. Connect the control card to the display cable to the left side of the input arrow. This card can display 64 color mode combinations, the mode is adjusted by K1, the color is adjusted by K2, and the settings have power-down memory; This spectrum comes standard with a 3.5mm headphone jack input. If your audio output is an RCA lotus jack, please purchase a Lotus to 3.5 conversion cable; When the signal input port is left floating, it is normal for the bottom of the spectrum to jump. Inserting a 3.5mm headphone plug into the headphone port will restore the bottom line; The spectrum control cards R1 and R2 potentiometers have been set to the optimal position at the factory, and users do not need to adjust them. If they are not adjusted, please return to the middle position. Instructions for using red dial switch:S1 is the voice control switch. The ON position is to turn on the sound control, and the OFF position is to turn off the sound control. S2 is a single-dual screen setting, and the ON position is a dual-screen setting. After S2 is set, it needs to be powered on to take effect.Product size: Dual P4 screen length 51.2 * width 12.8 cm, Dual P5 screen length 64 * width 16 cmSingle P4 screen length 25.6 * 12.8 cm wide, single P5 screen length 32 * 16 cm wideInstructions for use of control card buttons: (setting with power-down memory) K1 button (short press) ---- mode switchK2 button (short press)-color switchK1 button (press and hold) + K2 button (short press) Brightness increaseK2 button (press and hold) + K1 button (short press) Brightness reduction Instructions for using the red dial switch: S1 is the sound control switch, the ON position is to turn on the sound control, and the OFF position is to turn off the sound control; S2 is the single and dual screen setting, and the ON position is for dual screens.

Function description of R1 R2 potentiometer:Input adjustment potentiometer: used to adjust the size of the input signal, for example, if the input signal is too strong, it can be attenuated.Spectrum display amplitude potentiometer: used to adjust the maximum amplitude displayed after AGC (automatic gain) processing of the spectrum. After setting, the automatic gain will be automatically adjusted with this set value as the maximum amplitude limit. (If you don't need AGC function, you can turn off AGC when you adjust to the end)Note: The product has been debugged to the best value before shipment, except for special circumstances, generally no adjustment is required! If the signal is too strong, you can adjust R1 to reduce the input signal, counterclockwise to reduce, please do not adjust R2!Description of common problems in use:Problem 1: There is no sound, and the frequency spectrum also fluctuatesSolution:1. Insert the headphone jack of the control card into one end of the audio cable, while the other end is suspended but not plugged into the headphone jack. At this time, the frequency spectrum will jump. You can connect both ends to the headphone jack, or you can replace it with a better shield line;2. Check if both ends of the 3.5 audio cable are plugged into the headphone jack and plugged in to the end. Rotate to eliminate bad contact; (Many new customers have encountered that the audio cable is not plugged in to the end, and there is still a distance of 1-2 mm. The picture is inserted to the end)

3. If you turn on the voice control and there are tiny sounds around, the spectrum will be detected, and the automatic gain of the spectrum will be amplified and displayed. This is a normal phenomenon;4. It is normal that the frequency spectrum will jump when the finger touches the microphone of the control card and the surrounding lines;5. If your audio equipment has a noise floor, although there is no singing, the automatic spectrum gain will amplify the noise floor and display it. How to judge whether the frequency spectrum is normal: turn off the sound control switch, unplug the audio cable of the control card, and wait for a few seconds. The frequency spectrum does not jump to prove that the frequency spectrum is normal, and you can also test with other audio equipment.Problem 2: Dual-screen display, one screen is displayed normally, and there is a line in the other screenSolution:This is because the control card is set to single-screen mode, just push the empty color dial switch 2 to the dual-screen position.