Zektor Palladia™ 8X8 - Manual (Page 49)

HDA800(V2) Serial Protocol, Version 1.3, 9/12/13 49
Advanced Control
HDMI Control Settings
HDMI control settings.
These settings are saved using the ‘FS’ command. (See: “‘SS’ Save Default Power On Settings” on
page 43)
‘EDLO’ EDID Lock
Locking the EDID will keep the HDMI switch from registering any EDID changes. Any new devices
added to the switch, or any devices removed from the switch will be ignored.
This command is useful in keep receiver from causing the switch to re-read EDIDs and HDCP keys
each time the receiver is power cycled.
Most receivers will change their EDID settings when the power state is changed. They will change the
EDID to indicate their own built in capabilities when turned on. When turned off they will either
remove the EDID completely or pass through the EDID of the monitor plugged into the receiver’s out-
put.
The switch sees this change in EDIDs as a change in devices, which forces it to re-negotiate the new
devices with the sources HDCP keys. This will cause a temporarily loss of video on zones sharing the
source that’s having it’s HDCP keys read.
To prevent display flickering each time a receiver is turned on or off, you should perform the “Validat-
ing the installation of the HDA800(V2)” on page 26.
Once your system is validated, you should lock the EDID, and then save the new HDMI settings in
EEPROM so that they won’t be lost when power is cycled. (See: “‘SS’ Save Default Power On Set-
tings” on page 43)
To turn on / off, or the EDID lock state of the HDA800(V2):
^EDLO 0$ Unlock EDID, sets the switch to the normal mode of operating.
^EDLO 1$ Lock EDID, all device changes will be ignored.
^EDLO ?$ Query for current setting
Response String:
^=EDLO n$
Where:
n = Current lock state, 0=Unlocked, 1=Locked.
‘ESET’ Assign zones to an input source
By default, all the EDIDs of all zones (monitors and receivers) are read, and the lowest common fea-
tures of all the zones are combined into a single EDID, that is sent to all the sources. For instance, if all
the zones can receive Dolby5.1 audio, then the EDID will indicate that Dolby5.1 can be sent. If how-
ever even a single TV can only decode PCM stereo, the combined EDID will indicate to the all the
sources that only PCM stereo can be sent to any zone.
You can now use the ‘ESET’ command to combine the EDIDs of similar devices and send the com-
bined EDID to a source that will be associated with the devices. For instance all receivers can be com-
bined and sent to a Blu-ray or Cable box that will be used mostly for those receivers. This allows you
to enable Dolby5.1, or Dolby TrueHD, or any other features the receivers are capable of decoding.