Numbering Physical Channel With Multiple Soundstructure Devices - Polycom SoundStructure C16 Design Manual

numbering on the rear-panel of the device. For example, as shown in the following figure, physical input
channel 3 corresponds to input 3 on the SoundStructure C16 device.
Example of Corresponding Physical Channels on a Single SoundStructure Device
1 2 3 4
1 2 3 4

Numbering Physical Channel With Multiple SoundStructure Devices

When multiple SoundStructure devices are linked using One Big Audio Matrix (OBAM) to form a
multi-device SoundStructure system, instead of using a device identification number, the physical channel
numbering for both the inputs and the outputs ranges from 1 to the maximum number of inputs and outputs,
respectively, in the system. This is an extension of the single device setup where the physical channel
numbers for channels on the second device are the next numbers in the sequence of inputs from the first
device. For if there are two devices and the first device is a SoundStructure C16, the first input on the second
device becomes physical input 17. This continuation of the sequence of numbers is possible due to the
design of the OBAM Link interface.
OBAM Link is the method for connecting multiple devices together by connecting the OBAM Link cable from
one device to the next. The following figure shows the location of the OBAM connections and the OBAM
OUT and OBAM IN connections on the rear-panel of a SoundStructure device. To help verify when the
OBAM Link is connected properly, there are status LEDs near the outer edge of each connector that
illuminate when the devices are linked successfully.
Polycom, Inc.
Output Physical Channels 1 - 16
5 6 7 8 9
5 6 7 8 9
Input Physical Channels 1 - 16
10 11 12 13 14
10 11 12 13 14
SoundStructure C16
15 16
15 16
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