The INFOMEDIA LS30 digital recorder user manual provides setup, recording, playback, menu functions, data transfer, and troubleshooting instructions.
This manual introduces the INFOMEDIA LS30 digital recorder, outlining its main features such as one‑key recording, noise reduction, and high‑quality audio capture. It also lists the contents of the packaging, safety warnings, and legal notices.
The guide walks users through preparation, interface description, battery installation, recording modes, playback controls, menu navigation, USB data transfer, and troubleshooting steps, concluding with technical specifications and safety information. This manual is written in Chinese.
| Storage Capacity | 4 GB |
|---|---|
| Compression Types | MP3 / PCM |
| Playback Formats | WAV / MP3 / WMA |
| Frequency Response | 20 Hz ~ 22 kHz ±0.5 dB |
| Playback SNR | 94 dB (20 Hz‑22 kHz, A‑weighted) |
| Microphone SNR | 90 dB (Mic channel +19 dB Pre‑amp + AD) |
| Dynamic Range (Line Input) | > 90 dB |
| Microphone EIN | > 122 dB A‑weighted |
| THD+N (1 kHz) | < 0.02 % (20 Hz‑22 kHz bandwidth) |
| Weight | 70.5 g (without battery) |
| Dimensions | 125.25 × 45.8 × 18.8 mm |
| Operating Temperature | 0 °C ~ 70 °C |
| Operating Humidity | 20 % ~ 80 % |
| Low‑Cut Noise Reduction | 20 Hz ~ 22 kHz / 100 Hz ~ 22 kHz |
| Microphone Gain Range | 0 dB ~ 40 dB |
| Headphone Output Power | 30 mW (L) + 30 mW (R) into 16 Ω |
| USB Interface | USB 2.0, supports power supply |
| Battery Type | 2 × AAA dry or rechargeable cells |
| Power Consumption | 170 mW |
Press and hold the REC key to start one‑key recording, which directly enters classroom mode.
The LS30 is powered by two AAA dry cells or rechargeable AAA batteries.
The device provides up to 4 GB of internal storage.