User Manual

10
Radio Frequency Technical Specications
Radio frequency (RF) output power: < 54 dBµV/m at 3 m
Keyboard with two channels – RF frequencies: 27.095 MHz (channel 1), 27.195 MHz (channel 2)
Keyboard with a single channel – RF frequency: 27.195 MHz or 27.095 MHz
Mouse with two channels – RF frequencies: 27.045 MHz (channel 1), 27.145 MHz (channel 2)
Mouse with a single channel – RF frequency: 27.145 MHz or 27.045 MHz
Radio and TV Interference Regulations
The Microsoft hardware device(s) can radiate RF energy. If not installed and used in strict accordance with
the instructions given in the printed documentation and/or on-screen help les, the device may cause
harmful interference with other radio-communications devices (for example AM/FM radios, televisions,
baby monitors, cordless phones, etc). There is, however, no guarantee that RF interference will not occur in a
particular installation.
To determine if your hardware device is causing interference to other radio-communications devices,
disconnect the device from your computer or remove the device’s batteries (for a battery operated device).
If the interference stops, it was probably caused by the device. If the interference continues after you
disconnect the hardware device or remove the batteries, turn the computer off and then on again. If the
interference stopped when the computer was off, check to see if one of the input/output (I/O) devices or one
of the computer’s internal accessory boards is causing the problem. Disconnect the I/O devices one at a time
and see if the interference stops.
If this hardware device does cause interference, try the following measures to correct it:
● Relocate the antenna of the other radio-communications device (for example AM/FM radios, televisions,
baby monitors, cordless phones, etc.) until the interference stops.
● Move the hardware device farther away from the radio or TV, or move it to one side or the other of the
radio or TV.
● Plug the computer into a different power outlet so that the hardware device and radio or TV are on
different circuits controlled by different circuit breakers or fuses.
● If necessary, ask your computer dealer or an experienced radio-TV technician for more suggestions.
For more information about interference issues, go to the FCC Web site at:
http://www.fcc.gov/cgb/consumerfacts/interference.html.
You can also call the FCC at 888-CALL FCC to request Interference and Telephone Interference
fact sheets.
For Bluetooth and 2.4 GHz devices only: To comply with FCC RF exposure requirements, the following
operating congurations must be satised: the antenna has been installed by the manufacturer and no
changes can be made.
Microsoft Corporation; One Microsoft Way; Redmond, WA 98052-6399; U.S.A.
United States: [phone] Canada: [phone]