User's Manual

8
Radio Frequency Technical Specications
27 MHz Devices
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
Bluetooth Devices
RF output power: meets Bluetooth
®
requirements
Frequency: 2,400 MHz to 2483.5 MHz
2.4 GHz Devices
Non-specic short range device
RF output power: Meets all SRD requirements
Frequency: within the range of 2,400 MHz to 2,483.5 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.
X121690305mnl.indb 8 5/21/2008 3:15:52 PM