User manual SONY MDR-RF885RK

[. . . ] This system utilizes very high frequency signals in the 800 MHz band so the receiving performance may deteriorate due to the surroundings. The following examples illustrate conditions that may reduce the reception range or cause interference. ⷠInside a building with walls containing steel beams. Noise or interfering signals exist in the surroundings due to radio transceivers in trucks, etc. [. . . ] If noise occurs when the transmitter is connected to your TV or VCR, set the NOISE FILTER switch to ON. If the connected equipment has the AVLS (Automatic Volume Limiter System) function, be sure to turn the function off when using the transmitter. Otherwise, you will have to turn up the volume of the headphones, and that may cause noise. If you connect the transmitter to LINE OUT or REC OUT jacks of an audio reproducer such as an MD player or CD player, do not set the NOISE FILTER switch to ON. When the transmitter is placed on or near a TV, it may pick up a noise. To prevent your ears from being damaged, first lower the volume. The transmitter's power indicator will light in green. The headphones turn on automatically and the power indicator lights in red. Be sure to put the right housing (R) on your right ear and the left housing (L) on your left ear. Note If you are not going to use the headphones for the time being, turn them off by pressing the POWER button. If you do not receive a clear audio signal, press it again. Sending RF signals from the transmitter The transmitter starts sending RF signals automatically when it detects an audio signal from the equipment connected. If it does not detect an audio signal for more than about four minutes, the transmitter will stop sending RF signals, and the power indicator will turn off. When the transmitter receives an audio signal again, it starts sending the RF signals, and the power indicator will light in green again. If the audio signal is very weak, the transmitter does not send RF signals. if the transmitter is connected to a headphone jack , make sure the volume of the equipment connected is set to 5 ­ 6 or higher. You may not hear the beginning of the sound from the headphones until the transmitter starts sending the RF signals after detecting an audio signal. notes · If hiss is heard, move closer to the transmitter. ⷠYou may hear some noise when you disconnect the AC power adaptor from the transmitter before taking off the headphones. Follow steps 3 and 5 above until the receiving performance becomes better. The maximum distance is up to approximately 100 m without the system picking up any interference. However, the distance may vary according to the surroundings and environment. [. . . ] ⷠCharge the supplied rechargeable battery or if the power indicator is still off after charging the supplied rechargeable battery, take the headphones to a Sony dealer for replacement of the rechargeable battery. If you connect the transmitter to the LINE OUT or REC OUT jacks of an audio reproducer, make sure that the NOISE FILTER switch is set to OFF. Loud background noise As you move away from the transmitter, more noise is likely to be heard. if the transmitter is connected to the headphones jack , turn up the volume of the connected audio/video equipment. [. . . ]