Zektor HD1600-V2, Руководство пользователя

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HD1600V2 User Guide, Version 1.4, 10/30/13
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Using The HD1600V2
Using The HD1600V2
Functional Overview
The HD1600V2 is functionally divided into two switches, an HDMI switch and a SPDIF Digital Audio
switch. These two switches function as two separate switches.
The HDMI switch, is a full featured HDMI switch with audio breakaway capabilities. It caches EDID
settings and HDCP keys. The audio breakaway options allows the displaying of video from one HDMI
source, while playing audio from another HDMI source, or from the AUDIO switch.
The SPDIF Digital Audio switch allows the extraction of audio from any HDMI input.
The HDMI Switch
HDMI has many issues associated with its distribution. It was originally designed to connect a DVD
player to a TV, with a few tweaks to the specification to allow for limited distribution.
HDCP Keys
HDMI allows for encrypted audio/video streams to be sent over the HDMI cables. To do this, each
receiving TV or monitor must be issued its own decryption key. This forces each HDMI cable to send
a different stream of encrypted data, even if it’s the same program being sent to two different monitors.
This prevents a simple splitter from working, since a simple splitter would send the same stream to two
different monitors.
This also allows the source (DVD player, Cable Box, etc) to determine the number of simultaneous
monitors allowed to view it’s content. Some cable box manufacturers only supplied a single HDCP
key, while some Blu-ray players supplied a very limit number (like 3). Even today there are manufac-
turers that limit the number of HDCP keys, in their Blu-ray players to 9.
To work around this problem, the HD1600V2 will cache keys from sources and generate keys when
needed, to supply up to 24 HDCP keys.
When a source runs out of HDCP keys (there are more monitors attempting to view a source than there
are keys), it can do a number of undefined things. Video can go blank, or it can flash on and off, or in
some cases the source could even lock up and need to be power cycled.
If you suspect an HDCP problem, you can verify this by:
• Turning off the HD1600V2
• Turn off all TVs and monitors connected to the HD1600V2
• Turn on the HD1600V2 and set all zones to point to the source with the suspected HDCP prob-
lem.
• Now start turning on zones. If the display starts flickering or blanking after you turn on a zone,
then the source most likely has one less HDCP key that the number of zones you have turned
on.
• To remedy the HDCP problems, see the section on setting the number of HDCP keys. (See:
“Adjusting HDCP key counts” on page 15) .
For the most part there are fewer and fewer HDCP key issues with the newer HDMI products, and usu-
ally nothing needs to be done for the switch to work out of the box.