The Eonaudio EW-900 manual provides safety guidelines, system specifications, and step‑by‑step operation for the wireless microphone system.
This manual covers important safety precautions, proper power usage, battery handling, and maintenance for the EW‑900 wireless microphone system. It explains how to install batteries, avoid damage, and when to seek authorized service.
The guide also details the system’s technical specifications, operation of the receiver and transmitter, channel selection, frequency lock, and troubleshooting procedures, helping users set up and use multiple units in various environments. This manual is written in Chinese.
| Frequency range | 740‑790 MHz |
|---|---|
| Modulation method | Wideband FM |
| Number of channels | 200 |
| Channel spacing | 250 kHz |
| Frequency stability | ±0.005 % |
| Dynamic range | 100 dB |
| Maximum frequency deviation | ±45 kHz |
| Audio response | 80 Hz‑18 kHz (±3 dB) |
| Signal‑to‑noise ratio | >105 dB |
| Total harmonic distortion | ≤0.5 % |
| Operating temperature | -10 °C to +40 °C |
| Receiver sensitivity | 12 dB µV (80 dB S/N) |
| Sensitivity adjustment range | 12‑32 dB µV |
| Receiver max output level | +10 dBV |
| Transmitter output power (high) | 30 mW |
| Transmitter output power (low) | 3 mW |
| Battery life (high power) | >10 hours |
| Battery life (low power) | >15 hours |
Only the power adapter supplied with the unit should be used; other adapters may damage the equipment.
Up to 12 transmitters can be used in the same space on the same frequency band without causing interference.
Unplug the power and wipe the unit with a damp cloth; do not use any cleaning agents or solvents.