Feature

●Long-term reliable and stable working: Designed for the audio level test and the design of an integrated circuit chip, contains the square root of a compression circuit with dynamic index (example: input 1 V, 1 V; input 4 V, 2 V, input 9 V) the 3 V). Use 0.5 W metal film resistors with a large power margin to ensure a reliable and long-term to ensure the stable work and
●Moderate pointer swing: taking into account the dynamic and precise command hand swing moderate, avoiding the small signal pointer from moving, the large signal pointer is supported by the status.
●More convenient and flexible: No independent power supply required, power supply leads directly from the original. Reduce the cost of a transformer compared to TA7318P/TA7332P, while the housing inside takes up less space and the installation is more convenient and flexible.
●Adjustable output sensitivity: Enter the installation of a low-pass filter circuit to ensure high-frequency interference and power supply for harsh environments (e.g. car audio systems). Adjustable output sensitivity for a variety of specification heads.
●12 V DC supply: The most common 12 V DC power supply, which is easy to use on in-vehicle devices and PC computers. With power supply reverse polarity protection. Provide a protection pointer against the base of the start pointer and extend the life of the header.


Description

Specification:
Element Type: VU Meter Driver Board DB Audio Level Meter
Input sensitivity: 400Hz input audio signal with 8025B digital multimeter range
Measurement of AC mV, input: 97mV, 39 levels to +3dB position.
Supply voltage: DC 12 V 0.12 A.
PCB Size: 63 x 52 x 20mm/2.48 x 2.05 x 0.79 inch
Power supply connections for backlight: available DCl0 to 12V 50MA. Power for small bulbs.
Backlight
Drive VU Meter, Level Meter Sensitivity: Recommended Sensitivity of 500uA, 630ohm
Resistance. At this time, the damping effect is best, the level meter of the other specifications differs in damping effect and requires further adjustments.
Description: The supply voltage must be strict to ensure 12VDC, but more than
short-term work, but a long time will burn protective circuit.

Instructions:
1. Input part:
Lin, 0, Rin, is an audio signal input port for the CD audio output, which is left
connected to the right channel. Or an output port that is connected to the first input port
selection level, the former should not be connected to the output or volume of the output level.
potentiometer.
2. Output part:
Two VU meter side terminals "+" and "-" as output should be connected to the terminals "+" and "-" of a two-level gauge.
Sensitivity recommendation for mobile level meters: do not exceed DC 100uA to 500uA.1mA.
The potentiometer of the 3200 Ohm Blue 3296 series can adjust the sensitivity of the two
Adjust separately header. Clockwise sensitivity can be improved.
LA, LB are the terminals for the backlight, RA, RB is the other set backlight
Supply