Sony STR-ZA810ES Manual page 166

Select [HDMI Out B Mode].
2
Select the setting you want.
3
Main: Uses the jack for HDMI OUT B. Recommended when you enjoy TV or projector
content in only one room (main zone).
Zone: Uses the jack for HDMI zone. Recommended when enjoying video and sound
from a device connected to the receiver in another room (HDMI zone).
Note
When [Zone] is selected, the Control for HDMI function does not work. For details on selecting the
HDMI zone input, see "Enjoying video and sound in another location by connecting another amplifier
or TV using HDMI connections (HDMI zone)."
The HDMI OUT B/HDMI ZONE jack supports bandwidths up to 9 Gbps if [HDMI Out B Mode] is set
to [Zone] in the [HDMI Settings] menu.
[188] Adjusting Settings
Setting the priority for the main zone (Priority)
If you select the same HDMI input for the main zone and HDMI zone when the HDMI zone
function is enabled, there may be some interference to the audio and video signals in the main
zone. To avoid possible interference, you can place priority on the main zone for HDMI input
selection.
Select [Setup] - [HDMI Settings] from the home menu.
1
Select [Priority].
2
Select the setting you want.
3
Main & Zone:
You can enjoy the same input in the main zone and HDMI zone. However, there may
be some interference between the audio and video signals in the main zone and those
in the HDMI zone.
Main Only:
You can enjoy audio and video without interference in the main zone. However, if the
same input is selected in HDMI zone, there will be no video or audio output from HDMI
zone.
Note
This function works only when [HDMI Out B Mode] is set to [Zone].
Hint
If you connect TVs that have different resolutions to the main zone and HDMI zone but select the
HDMI Settings