7
SYS RESET On/Off:
Not normally used, this switch, when turned on, forces all connected displays to switch
to their primary HDMI input via a CEC system command. By switching the System
Reset ON, the unit will perform a reset every 8~10 minutes. The default setting is OFF,
and is the position for normal use.
Note:
The system reset will not be performed on displays that do not support CEC
commands.
SERVICE Port:
2
This Mini-USB port is reserved for factory service only.
EDID Operation:
The distribution amplifier’s default factory setting is “TV”. Leave the switch in this
position so that the unit can sense the proper EDID setting based on the display’s
requirements.
When first powered on in “TV” mode, the distribution amplifier will detect and store the
EDID from HDMI output port 1 and it will send that output’s display format information to
the connected source. The distribution amplifier retains in memory the last EDID
decision it made, therefore the device will use the last EDID it stored if output port 1 is
not connected to a display after being power cycled.
Selecting the “STD” position on the EDID switch will force the amplifier to use a default
EDID output. This sets the EDID’s native resolution to 1080p@60Hz and audio is limited
to LPCM 2CH.
* The Extended display identification data (EDID) is a data structure provided by a
computer display to describe its capabilities. It’s what enables the HDMI DA to know
what kind of monitor is connected to the unit. EDID is defined by a standard published
by the Video Electronics Standards Association (VESA). The EDID includes
manufacturer name, product type, phosphor or filter type, timings supported by the
display, display size, luminance data and (for digital displays only) pixel mapping data.
Operation Notification LEDs
Besides the Power LED, there is a status LED as well as other LEDS showing the unit’s
condition with respect to successfully executed output connections.
A “Sync” LED shows if an HDMI source has been detected and there are also LEDs for
each output which show whether or not the output has successfully made a connection
with the source device. The number of LEDs showing a successful connection varies
depending on the model. The 1T-DA-674 has four LEDs and the 1T-DA-678 has eight.
