Euphonix Modular I/O Specifications download pdf (Page 43)

Chapter 6: Synchronization Modules 43

DEV X

The DEV X switch accommodates legacy systems requiring a CAN remote to communicate with up to 16 modules spread across

two frames. In single SY983 frames, DEVX has no effect. In redundant SY983 frames, the DEVX switch must be set to the same po-

sition in both modules.

TERM

The CAN bus must be terminated only once in a frame on either the SY983 or on an FC972 Remote.

SLAVE

For fail-safe operation, a frame may be equipped with a second (redundant) sync module. Both sync modules must be placed in

one of the red slots at the rear of the frame, close to the mains connectors.

• On one SY983 Sync module, set this switch to MASTER (right position), and set the other to SLAVE.

• Lock both SY983 modules to external sources synchronized to each other.

This prevents audio signal disturbance caused by phase and/or frequency shifts in case of a switch-over.

The SLAVE module permanently watches the LOCK status of the MASTER. In case of a MASTER failure (i.e., unlock condition, bro-

ken hardware), the SLAVE module takes over and continues clocking the frame while the red Slave LED flashes. If the MASTER

module returns to lock status, it automatically takes over clock distribution, the SLAVE returns to watch mode, and the Slave LED

lights solid again.

Sync Source Select

Select a clock source by turning the front panel’s Source rotary encoder with a small screw driver. An LED display shows the clock

frequency and sync mode.

The web interface shows the status of each sync module. In case of a severe sync problem, the Frame Controller can be pro-

grammed to send an SNMP trap and a GPO may be activated. A higher-ranking monitoring system may poll the status of the sync

module(s) with SNMP.

Remote Configuration using a Web Browser

The SY983 supports configuring parameters using a web browser interface, which requires fitting an FC972 Remote in the frame.

OVERVIEW Page

From the OVERVIEW Page of the web interface, click the SY983’s wrench tool to see its configuration pages.

Do not terminate the CAN bus twice.

See “FC972 Remote” on page 35.

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Euphonix Modular I/O Specifications Page 43