It is the combination of two 32*16CM boards.

Power supply: can be powered by computer USB

Use a separate power supply, 5V 6A (or more than 6A) power supply,

The main features of AS128 spectrum:

1. Using 32-bit high-speed ARM processor, the spectrum display is accurate, accurate and beautiful, and can be used for frequency sweep test;

2. Two types of signal acquisition methods, electret microphone MIC and line input, adopt Jingsong core technology, the microphone collection effect and line input effect are very good;

3. Adopt professional-grade AGC (automatic gain control), with a wide range of audio adaptation, not only to ensure the accuracy and effect of the spectrum, but also the situation that the volume is too low to display; the volume is displayed in full screen;

4. Up to 64 color mode combinations with power-down memory;

5. Added 10-level brightness adjustment, without worrying about dazzling, messy, can be adjusted to very soft brightness, with power-off memory;

Instructions for use:

The control card can control 32*64 points P4 P5 P6 full-color dot matrix modules of 75 interfaces. The card supports up to 2 screen cascades, and can also work on a single screen;

The connection sequence of the display screen is as shown in the figure below, pay attention to the direction of the display screen arrow, and connect the control card to the left side of the input arrow of the display cable;

The card can display 64 combinations of color modes, adjust the mode through K1, adjust the color through K2, and all settings have been powered off.

The standard configuration of the spectrum is 3.5 mm headphone jack input. If your audio output is RCA Lotus interface, please purchase Lotus to 3.5 conversion cable.

When the signal input port is floating, the bottom jump of the spectrum is normal. Insert the 3.5mm headphone plug into the headphone port to restore the bottom line;

The R1 and R2 potentiometers of the spectrum control card have been set to the best position at the factory. The user does not need to adjust it. If it is accidentally adjusted, return to the middle position.

Product size: curtain length 64 * height 16 cm

Control card button description: (with power-down memory setting)

K1 button (short press)-mode switch

K2 button (short press)----color switch

K1 button (press and hold) + K2 button (short press) brightness plus

K2 button (press and hold) + K1 button (short press) brightness decreases

Instructions for use of the red DIP switch:

S1 is a voice control switch. The ON position is used to turn on the voice control, the OFF position is used to turn off the voice control; S2 is a single-screen and dual-screen setting, and the ON position is a dual-screen.

Package Included:

2XP4 full color screen

1 control card

1x signal cable

1x cable