Справочник Пользователя для Polycom C12

Hardware Installation Guide for the Polycom SoundStructure C16, C12, C8, And SR12

2 - 10

Because the OBAM interface is bi-directional, data will flow in both directions 

on the single cable between devices. Due to this bi-directionality, do not loop 

the OBAM link connections (as follows).

Once the devices are connected over OBAM, the SoundStructure devices will 

behave as one large audio device, in other words, all the inputs from all the 

SoundStructure devices are available on all the devices.  Any combination of 

SoundStructure C16, C12, C8, and SR12 devices may be linked together up to 

a total of eight devices.
When the SoundStructure devices are connected over the OBAM Link, the 

OBAM Input Status LED illuminates when there is a valid connection between 

the OBAM IN port on this device and an OBAM OUT port on a second 

SoundStructure device.  This LED will not illuminate unless there is a valid 

connection between the two devices.  The OBAM Output Status LED 

illuminates when there is a valid connection between the OBAM OUT port on 

this device and an OBAM IN port on a different SoundStructure device.  This 

LED will not illuminate unless there is a valid connection between the two 

devices.
A 12-inch OBAM cable is provided with each SoundStructure device.  Should 

longer OBAM cables be required, standard IEEE1394b "beta" cables may be 

used.  The maximum length of any single link between devices is 10 feet (3 m). 

See 

 for more details. An OBAM link cable may be tested by 

inserting the same cable into the OBAM IN and OBAM OUT ports.  If the 

OBAM input and output status LEDs illuminate, the OBAM cable is fully 

functional.

When multiple devices are connected via the OBAM interface, internal 

SoundStructure device ID’s are assigned automatically based on the OBAM 

connections. The device that has no OBAM IN connection will be device 1. The 

device connected to that unit will be device 2, and so on until the last device - 

IN

OUT

12V

IN

OUT

12V

IN

OUT

12V