Transmitter & Receivers

The INFRACOM conferencing system uses the Compact Transmitter MSI8D to transmit 8 audio channels using infrared light. Using IRad radiators that are directly linked to the MSI8D, the audio signals are transformed into frequency-modulated infrared light and then transferred. By using narrow-band frequency modulation, the original language (OR) and up to seven additional languages can be communicated at the same time on distinct carrier frequencies.
The IRX32 receiver picks up the sent signals, which can subsequently be heard using headphones. The frequency band can be selected and the channels can be turned ON or OFF using small switches on the front panel. Up to 32 transmission channels may be assigned using a rotating switch. Three infrared transmitter diodes enable the technician to monitor without radiators. Eight green LEDs (INT) show whether the interpreter channel is active. The operation mode is indicated by LEDs on the front panel: channel ON (red), and audio signal accessible (green).

• • OR-IN (1 x XLR-socket) for the input of the original language (OR)

• • OR-OUT (1 x XLR-plug) for balanced output of the original language, adjustable (-14 – +6)DVB/ 600Ohm

• • LINE-OUT (8 x XLR-plug)

• • IR-LINK (2 x BNC-socket) 1: Connection for up to 10 radiators IRad, 2: Connection of up to 10 further radiators IRad

• • RF-LINK (1 x BNC socket) for cascading (RF) with further transmitters

• • INTERPRETER (2 x A36-socket) for connection of interpreter consoles

• • Green-lighted mains switch for power ON indication

• • Red LEDs for channel ON indication

• • Green LEDs for Audio available (AF)

• • Green LEDs for interpreter control

• • 55kHz -975kHz in 40kHz steps up to 1335kHz (channel 31) Intermediate frequency: Intermediate frequency: 455 kHz

• • Distortion: < 0.2% Signal-to-noise ratio: > 70dB

• • Channel separation: > 60dB

• • Mains power: (90 – 250)VAC, (50 – 60)Hz

• • Power consumption: 40VA max

• • Housing: 19″, 2 HE, Aluminium, “silver” anodized

• • Size: W x H x D: (433 x 88 x 305)mm

• • Weight: 4.6kg

• • The unit is complying with the international standard IEC914

The INFRACOM wireless audio distribution system’s latest series of infrared power radiators includes the radiator IRad. According to the IR transmission specifications of the conference technology (IEC61603-3 and IEC61603-7), up to 32 channels in FM quality can be broadcast simultaneously to the radiator IRad with the appropriate IR-transmitter and be emitted in a frequency range between band II and band IV.
The metal swivel bracket can be fixed to a tripod, wall, ceiling, or mounting bracket. 3/8 is the mounting thread size. The high-power radiator doesn’t need a cooling fan to function; instead, natural convection cooling and a metal heat sink on the back ensure efficient heat exchange, ensuring continuous operation in complete silence.
operating systems: There are two operating modes: full and half IR-power output. Using the matching switch on the back side, you can choose between the several operation modes.
circuit for protection: The radiator has temperature control in addition to the ESD protection. When the temperature rises too high, this control lowers the radiator’s output power or turns it off entirely. The front LED light changes colors to signify this mode.

• • Carrier frequency range: 40-4000 kHz (band II and band IV)

• • Number of transmitter diodes: 336

• • The average radial angle of the IR diodes: 30°

• • Average IR transmission power: 20W

• • Switch for 50% / 100% IR power output

• • Switch for line termination

• • Highly linear input and output signal quality

• • The mains power connector on the rear of the radiator (recessed IEC panel plug) with ESD-protection

• • The IEC mains socket connector placed next to the mains power connector can be used for connecting the next radiator in the line

• • RF-input with one BNC-connectors (50 Ohms). The second parallel electric BNC socket is used to loop through the signal Accessories (in delivery)

• • 4.0-meter mains connection cable

• • 3.5 meter BNC – cable

• • Status Indication: A LED (multicolor) displays the current mode of operation: OFF (Standby), Blue permanent: ON (full IR power out), Yellow permanent: ON (half IR power out), Red flashing: failure, e.g. excess temperature, one or more diode-lines are defective, other malfunction

• • Temperature Range: Operation: +10°C to +40°C

• • Storage: -20°C to +50°C

• • Humidity: < 80%, non condensing

• • Convective cooling

• • Power Supply: Mains power: (100 – 240) VAC, (50 – 60) Hz provided by the built-in switching power supply

• • Power consumption: Stand-by: 9 W, Half power: 25 W, Full power: 50 W

• • Housing: Plastic cabinet, anthracite – swivel bracket and the heat sink are in metal

• • Size: W x H x D: (420 x 282 x 50) mm

• • Weight: 4.9 k

• • Complying with international standard IEC60914 / IEC61603-3