This document is the installation and user manual for the AV-VC volume control system, which describes the function description, characteristic parameters, and panel instructions of the mixing module.
The Plexus AV‑VC series provides programmable volume control for unbalanced audio signals. The system supports 4‑channel (AV‑VC‑4) or 6‑channel (AV‑VC‑6) configurations, with remote digital gain adjustment via RS‑232 commands or manual front‑panel keys.
The manual describes front and rear panel layouts, power requirements, serial communication settings, and example command codes for volume up, down, and mute functions. It also lists technical specifications such as impedance, frequency response, and environmental limits. This manual is written in Chinese.
| Output impedance | 10Ω |
|---|---|
| Input/Output type | Unbalanced |
| Total harmonic distortion | -85 dB |
| Noise level | -95 dB |
| Input level | 1‑2 VPP |
| Channel separation | -90 dB |
| Mute level | -63 dB |
| Attenuation range | 0‑76 dB |
| Frequency response | 20 Hz‑20 kHz |
| Serial communication format | 9600‑N‑8‑1 |
| Power supply | 12 V DC, 1.0 A |
| Maximum power consumption | 3 W |
The serial port uses 9600 baud, 8 data bits, no parity, and 1 stop bit.
It operates from a 12 V DC supply at up to 1.0 A, with a maximum power consumption of 3 W.
The AV‑VC‑4 model provides four independent volume channels.