Disconnect port, Input cascade selection, Lock port – AMX UDM-0404 User Manual
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UDM Hub Control Protocol
85
UDM-0404 4x4 Multi-Format Distribution Hub
Input type can have the following values:
Return Status:
Disconnect Port
Disconnects the current input from the Port specified by the Port property, or if non-zero, from the port
specified in the command.
Return Status:
Input Cascade Selection
Each input in the UDM can either come from the VGA connector on the hub or from the cascade connector of
another upstream hub. This command selects this option for each of the four VGA ports.
Cascade value takes the following values:
Return Status:
Lock Port
Locks the port (or range of ports) specified by the Port property, or if non zero, the port specified in the
command, so that the connected input may no longer be changed on that port.
Return Status:
Value
Description
0
VGA
1
Composite (CVBS)
2
S-Video
3
Component analog (YPbPr)
4
TV (from TVM)
Byte #
0
1
2
3
4
5
Byte value
1
Status
Port
Input Selected
Sub Input
Input Type
Byte #
0
1
2
3
4
5
Byte value
6
User Defined
Port
User Defined
User Defined
User Defined
Byte #
0
1
2
3
4
5
Byte value
6
Status
Port
User Defined
User Defined
User Defined
Byte #
0
1
2
3
4
5
Byte value
9
User Defined
Input
Cascade value
User Defined
User Defined
Value
Description
0
No cascade - VGA input
1
Cascade from upstream hub
Byte #
0
1
2
3
4
5
Byte value
9
Status
Port
User Defined
User Defined
User Defined
Byte #
0
1
2
3
4
5
Byte value
2
User Defined
Port
User Defined
User Defined
User Defined
Byte #
0
1
2
3
4
5
Byte value
2
Status
Port
User Defined
User Defined
User Defined
The status return is a copy of the command with the first user defined byte replaced
by a status value - status values are described in a separate section.