Instructions for Use
Page 10
... on/off function • Operation indicator (green LED) • Mode selection switch for selection of carrier frequencies • Automatic volume control • RF output for connection of available accessories comes with the SI 30. Operation indicator, green LED 11 infra-red diodes BRIEF DESCRIPTION Infra-red two-channel modulator used in conjunction with Sennheiser infra-red receivers to set up a cordless sound transmission system. • SI 30 infra-red two-channel modulators have sufficient IR...
... on/off function • Operation indicator (green LED) • Mode selection switch for selection of carrier frequencies • Automatic volume control • RF output for connection of available accessories comes with the SI 30. Operation indicator, green LED 11 infra-red diodes BRIEF DESCRIPTION Infra-red two-channel modulator used in conjunction with Sennheiser infra-red receivers to set up a cordless sound transmission system. • SI 30 infra-red two-channel modulators have sufficient IR...
Instructions for Use
Page 11
... INSTALLATION • Position the modulator as high as possible (eye-level). AF CONNECTION Use the AF connection cable to connect the AF input (N) on the SI 30 to the headphone socket of the light between the modulator and the receiver. MAINS CONNECTION Connect the NT 20 plug-in mains unit to the correct direction of the plug. Do not obstruct the path of the sound source. Plug the cable into power supply...
... INSTALLATION • Position the modulator as high as possible (eye-level). AF CONNECTION Use the AF connection cable to connect the AF input (N) on the SI 30 to the headphone socket of the light between the modulator and the receiver. MAINS CONNECTION Connect the NT 20 plug-in mains unit to the correct direction of the plug. Do not obstruct the path of the sound source. Plug the cable into power supply...
Instructions for Use
Page 12
... During mono operation the SI 30´s IR capacity is used (see diagram): Stereo or two-channel mode Mono Channel 1 (2.3 MHz) Mono Channel 2 (2.8 MHz) ∞ I II ∞ I II ∞ I II R L Connection to stereo sockets L Connection to mono sockets L Connection to select the infra-red carrier frequency. NOTE Some modern television sets have a separate volume control for the connection of your sound source to operate the SI 30 modulator. Please refer to the instruction manual of a tape recorder (e.g.
... During mono operation the SI 30´s IR capacity is used (see diagram): Stereo or two-channel mode Mono Channel 1 (2.3 MHz) Mono Channel 2 (2.8 MHz) ∞ I II ∞ I II ∞ I II R L Connection to stereo sockets L Connection to mono sockets L Connection to select the infra-red carrier frequency. NOTE Some modern television sets have a separate volume control for the connection of your sound source to operate the SI 30 modulator. Please refer to the instruction manual of a tape recorder (e.g.
Instructions for Use
Page 13
... 3 to 4 minutes, the modulator automatically switches off function. The automatic on/off ). In standby mode, the SI 30's current consumption is no ON/OFF switch. If there is very low. ON/OFF SWITCH The SI 30 modulator and the NT 20 plug-in conjunction with 3.5 mm mono jack plug • 1 3.5 mm/1/4" jack adaptor ACCESSORIES (to use the SI 30 for powering the SI 30 in mains unit have no audio signal for operation.
... 3 to 4 minutes, the modulator automatically switches off function. The automatic on/off ). In standby mode, the SI 30's current consumption is no ON/OFF switch. If there is very low. ON/OFF SWITCH The SI 30 modulator and the NT 20 plug-in conjunction with 3.5 mm mono jack plug • 1 3.5 mm/1/4" jack adaptor ACCESSORIES (to use the SI 30 for powering the SI 30 in mains unit have no audio signal for operation.
Instructions for Use
Page 14
... channel 2 ∞ stereo channel 1+2 Modulation FM Carrier frequencies channel 1: 2.3 MHz channel 2: 2.8 MHz Nominal deviation ± 50 kHz Emitting diodes 11 Pre-emphasis 50 µs Audio frequency response 30 - 18,000 Hz THD (1 kHz and nominal deviation) ≤ 1 % Signal-to-noise ratio ≥ 74 dBArms ≥ 63 dB as per CCIR 468 Volume control automatic AF connection RF output for connection of infra-red radiators 3.5 mm ø jack plug...
... channel 2 ∞ stereo channel 1+2 Modulation FM Carrier frequencies channel 1: 2.3 MHz channel 2: 2.8 MHz Nominal deviation ± 50 kHz Emitting diodes 11 Pre-emphasis 50 µs Audio frequency response 30 - 18,000 Hz THD (1 kHz and nominal deviation) ≤ 1 % Signal-to-noise ratio ≥ 74 dBArms ≥ 63 dB as per CCIR 468 Volume control automatic AF connection RF output for connection of infra-red radiators 3.5 mm ø jack plug...