User Manual

3
Safety Instructions.............................. 1
Welcome………………………………. 2
Specifications..................................... 3
Listening For a Lifetime……………… 4
Contents
VHF-3300
Dual Channel Wireless Microphone System
Introduction
Descriptions and Controls
The Proximity Effect …………............. 7
Feedback............................................. 8
Placement and Tone Quality............... 8
Stage Monitors/P.A. Loudspeakers..... 8
Microphone Basics
Operating the System..………............. 9
Achieving Optimum Performance........ 9
Auto-Noise Squelch Feature............... 9
Reciever Volume Adjustment.............. 9
Problems and Solutions..……............. 10
Operations
Troubleshooting
Specifications
Frequency Range: 220-270MHz
Modulation Mode: FM（frequency modulation system）
Mute Control: advanced noise locking and mute function
RF Steadiness: ±0.005%
Frequency Deviation: ±15kHz
Channels for Selection: dual channels
Total Harmonic Distortion: <0.5%（at 1kHz）
S/N Ratio: >70dB
Receiver Sensitivity: -80dBm
Frequency Response: 80Hz-15kHz
Transmit Power: <10mW
Resonance Interfere Rate: ≥65dB
False Image Interfere Rate: ≥65dB
Receiver Power Supply: DC 12V/300mA, External
Transmitter Power Supply: 9V Ni-MH battery
Recharging Period: 8-10 Hours
Operating Temperature: -25-55 °C
Operating Humidity: <93%
Operating Range: Approx. 50m
Front Panel ........................................
6
Rear Panel......................................... 6
Microphone......................................... 7
Getting Connected
Connecting the VHF-3300................. 5
Microphone Battery Installation.......... 5
Charging Batteries.............................. 5