Supported Number Of Sinks - AMX Optima Instruction Manual

Unsuccessful Transmission in System
Note: Be sure the destination devices support the resolution of the source device.
If an Optima HDMI system does not successfully transmit the protected content to any of the routed
sinks, it may indicate one of the following conditions:
* Key revocation is handled strictly by the source device. The Optima does not take any action with
respect to revoked keys.

Supported Number of Sinks

HDCP source devices and the Optima HDMI inputs each support a specific maximum number of sinks.
HDCP Source Device
Each source has a specific number of sinks (repeaters and/or destination devices) that it can support in
addition to the first downstream repeater (which may or may not be an Optima). The number of sinks the
source supports downstream of the first repeater is determined by the source's manufacturer.
Optima
Each Optima HDMI input supports a maximum of 16 downstream sinks (repeaters and/or destination
devices). The Optima, which functions as a repeater, may or may not be the first repeater in the system.
Once a source is routed through the Optima to a sink, that sink's key is added to the Optima input's sink
key cache (list of supported sinks) and remains in the cache even if the sink is disconnected.
One Sink Too Many
Tip: We recommend keeping track of the number of sinks (repeaters and destinations) in a system
to avoid the problem of having one too many.
If you attempt to route the source to an additional sink past its limit or the Optima input's limit of 16
(whichever occurs first), the protected content will not be transmitted to any of the routed sinks.
Having one sink too many can occur in two different cases (the solution for each is also different).
Optima Instruction Manual
Invalid key – The Optima output connector detected an invalid authentication key on the
destination device.
Non-compliant device – The sink device is not HDCP compliant or has had its authentication
key revoked.*
Source sink support limit exceeded – The source device has been routed to more sinks
(display devices and/or repeaters) than it can support.
Optima HDMI input sink support limit exceeded – The input is actively routed to more than
16 downstream sinks (display devices and/or repeaters).
If a source supports less than 16 sinks downstream from the Optima and an additional sink
past the source's limit is added anywhere in the system, the protected content stops
transmitting. Removing a repeater between the source and the Optima will restore
transmission of protected content. Disconnecting a sink downstream from the Optima, will
not restore the transmission of protected content because the disconnected sink's key is still in
the input's sink key cache. The cache needs to be cleared and the cleared state needs to be
persisted (if the cache was previously persisted) so authentication can be completed again (for
cache information, see page 82).
If a source could support 16 or more sinks downstream from the Optima and a 17
added downstream of the Optima, the protected content stops transmitting and the input on the
HDMI board automatically clears its cache. The input will authenticate each of the
downstream sinks again, but when it reaches the 17
transmitting and the cache is cleared. This process will continue indefinitely until one of the
Optima's downstream sinks has been unplugged, bringing the number back to 16 (the
Optima's sink limit).
HDMI I/O Board
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sink, the protected content stops
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sink is
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