Factory EDID Slots
Factory EDID is categorized by video format (DVI or HDMI). EDID is available for most common
resolutions and audio formats.
Output Slots
Each slot contains the EDID of the corresponding, connected sink device. When HPD is
detected, the EDID of that sink device is stored automatically.
When a sink is removed or power to the DA HD 4K device is cycled, the EDID is removed from
the slot and is replaced with the default value until a new sink is detected and a new EDID
stored.
User Slots
These two slots are available for storing imported EDID files. Initially, these slots contain the
default EDID until they are overwritten by the imported files. The imported file remains in the
slot until they are overwritten or the unit is reset (see the
Reset
command in SIS on page 24 or
Device Menu
on page 28 to reset the unit.
EDID Memory Retention
The assigned EDID is stored to an EEPROM, which is located at the HDMI input. The stored
EDID is retained until a reset is initiated.
Hot Plug Detect (HPD)
HPD remains high on all inputs while the unit is powered on. The HPD drops low only while
EDID is updated.
HDCP
The DA HD 4K series device acts as an HDCP and HDMI repeater by actively handling HDCP
key negotiation and authentication on the input and each output. However, it does not report
itself as a repeater or forward a KSV list.
The distribution amplifier supports HDCP Output Mode.
Input
The HDMI input negotiates and authenticates HDCP with the souce device if the source
requires HDCP encryption. The authentication process is repeated whenever the stored EDID
is changed or updated, which is indicated by pulling HPD low.
HDCP support can be disabled using the
HDCP Authorized Device
SIS command
(see page 22).
Outputs
Each output is individually pre-authenticated and encrypted, in accordance with the configured
HDCP output mode.
If an output requires encryption but the connected sink device cannot be authenticated, that
output will display a green screen.
HDCP output modes
Follow input
— Output is always authenticated but only encrypted when required by input.
HDMI authentication is continuous. DVI authentication occurs for a maximum of 10 seconds,
then fails. This is the default mode.
Always encrypt output
— Output is always authenticated and encrypted. HDMI
authentication is continuous. DVI authentication occurs for a maximum of 10 seconds, then
fails.
Follow Input (with continuous DVI trials)
— Output is always authenticated but only
encrypted when required by input. Both HDMI and DVI authentication are continuous.
Always encrypt output (with continuous DVI trials)
— Output is always authenticated and
encrypted. Both HDMI and DVI authentication are continuous.
DA HD 4K Series • Configuration
16