Overview
The ISI85M is the core host of professional IR Simultaneous Interpretation System solutions. It accepts analog or digital audio inputs, modulates them onto infrared carriers, and transmits them to radiating panels in the conference room. As part of comprehensive Simultaneous Interpretation Equipment, it ensures high-quality audio, flexible configuration, emergency control, and secure transmission that cannot be intercepted through opaque objects, making it suitable for small, medium, and large conference halls as well as outdoor venues.
Product features
International Standard Compliance & Compatibility
• Fully compliant with IEC 61603-7 and IEC 60914 standards, as well as national standard GB 50524-2010.
• Compatible with any other infrared interpretation system meeting IEC 61603-7.
• Supports master-slave mode, allowing multiple hosts to extend coverage and assign up to 64 audio channels.
Advanced Audio Modulation & Transmission
• Utilizes DQPSK digital modulation/demodulation technology for stable and interference-free transmission.
• Operates within 2–8 MHz frequency band to avoid interference from high-frequency lighting systems.
• Up to 8 audio channels can be individually assigned, with auxiliary modes for music during breaks.
Flexible Input & Output Interfaces
• Supports 16 analog audio inputs and 16 analog audio outputs, with balanced and unbalanced connection options.
• Includes 2 XLR inputs for auxiliary audio, 6 BNC outputs for HF radiators (each connecting up to 30 panels), and 1 BNC HF input for linking other transmitter hosts.
• Optional Dante port enables integration into a digital audio network.
• Ethernet and RS-232 ports provide computer connectivity for easy system settings and centralized control.
Intelligent System Control & Monitoring
• Graphic LCD displays system status and configuration menu with multi-language support.
• Four configuration buttons, channel activity indicators, and emergency switch connector for immediate alerts.
• Each channel can be labeled with a language name, and the system can automatically assign emergency messages to all channels.
• Built-in small infrared radiator allows audio monitoring.
Superior Audio Quality & Performance
• Frequency response: 20 Hz–10 kHz (Standard Quality), 20 Hz–20 kHz (High Quality).
• Total harmonic distortion <0.05%, isolation >80 dB, dynamic range >90 dB, weighted SNR >85 dBA.
• Adjustable input sensitivity for precise audio level control, ensuring consistent sound quality across all channels.
Robust Design & Installation
• Compact and durable black enclosure, suitable for tabletop or 19” rack mounting.
• Dimensions: 88 × 483 × 266 mm; weight: 7.5 kg.
• Power supply: AC 100–240 V, 50/60 Hz; max power consumption: 25 W.
• Removable feet allow freestanding installation, ensuring flexibility in different conference environments.
Technical Parameters
| Category | Specification Item | Description |
|---|---|---|
| Technical Specifications | Modulation | DQPSK, in accordance with IEC 61603-7 |
| Modulation Frequency | 2 to 8 MHz according to IEC 61603-7, carrier 0 to 5: 2 to 6 MHz | |
| Frequency Response (Standard Quality) | 20 Hz to 10 kHz (-3dB) | |
| Frequency Response (Perfect Quality) | 20 Hz to 20 kHz (-3dB) | |
| THD at 1 kHz | < 0.05% | |
| Isolation | > 80 dB | |
| Dynamic Range | > 90 dB | |
| Weighted SNR | > 85 dBA | |
| Electrical Specifications | Unbalanced Audio Inputs | -12 dBV to +12 dBV Nominal |
| Balanced Audio Inputs | -6 dBV to +18 dBV Nominal | |
| Emergency Switch Connector | 2-pin 3.81 mm Phoenix Connector, Alarm Signal Control Input | |
| Headphone Output | 32 ohm to 2 kiloohm | |
| HF Input/Output | 75 ohm | |
| Power Supply | AC 100 V - 240 V, 50 Hz / 60 Hz | |
| Power Consumption | 25 W max | |
| Mechanical Specifications | Mounting | Bracket for 19" rack mounting or fixing to tabletop; removable feet for freestanding use on tabletop |
| Dimensions (h x w x d) | 88 × 483 × 266 mm | |
| Weight | 7.5 kg |
