الوصف

VF series PPM LED bargraph meter modules can accept and interpret audio signal and programme signal which is transmitted by lines and generate audio level for display. The module can achieve PPM peak programme level meter’s bar display or dot display and level’s peak hold is optional. Sensitivity of transmission channel can be adjusted by the parts on module, so display’s dynamic range can be adjusted easily.
Audio can connect the signal to the preamplifier (circuit) or power amplifier output port by PH port connector or other two connectors. The signal is sent to the LED bar to display after peak detection, transfer amplification and processed by software. Because of wide impedance match range, the module can be widely used in the volume display of audio system’s audio output, sound console output, programme signal transmitted by lines, volume output by power amplifier and the peak programme level in the process of programme recording. It can monitor the peak level of the signal well, in case of the audio system overmodulation or overload.
The module has wide range power supply, low power consumption. The bargraph can be a single color, such as red, green, yellow etc. or can be two or more colors to display separately, which represent different function region and improve the visual effect of programme.