Nikon D3100 Reference Manual page 144

HDMI Options
The HDMI option in the setup menu controls output resolution and can be used to
enable the camera for remote control from devices that support HDMI-CEC (High-
Definition Multimedia Interface–Consumer Electronics Control, a standard that
allows HDMI devices to be used to control peripherals to which they are connected).
Output Resolution
Choose the format for images output to the HDMI device. If
Auto is selected, the camera will automatically select the
appropriate format.
Device Control
If On is selected for HDMI >Device control in the setup
menu when the camera is connected to a television that
supports HDMI-CEC and both the camera and television are
on, the display shown at right will appear on the television
and the television remote can be used in place of the
camera multi selector and J button during full-frame
playback and slide shows. If Off is selected, the television remote can not be used to
control the camera.
A
HDMI-CEC Devices
When the camera is connected to an HDMI-CEC device, ) will appear in the viewfinder in
place of the number of exposures remaining.
A
Device Control
See the television manual for details.
Q
128