How do I calibrate my IMG STAGELINE VU-800 Pro VU Meter for accurate audio level readings?

[OMolly]

To ensure your IMG STAGELINE VU-800 Pro VU Meter provides precise audio level indication, follow these steps for sensitivity adjustment: Begin by using a test signal before level measurement to ensure the "0 dB" LEDs illuminate when your system operates at its optimal level. First, you will need a test signal. A 1 kHz sine signal at either 0.775 V or 1 V is required. This can be generated from a tone generator, oscillator, test CD, or any audio device set to 0 dB output. Next, connect the VU meter to its power supply, turn it on, and select your preferred display mode. Now, for the actual adjustment: Aim for the level display to indicate 0 dB. If the level is off, use a small screwdriver to adjust the sensitivity controls labeled "ADJUST". The upper control handles the left channel, and the lower control manages the right channel. Rotate each trimming control until you achieve a 0 dB indication on the meter for both channels. By completing these calibration steps, your IMG STAGELINE VU-800 Pro will accurately reflect your audio levels.