Instruction manual

Euphonix Modular I/O Configuration Guide Product Data Sheets

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Frame position

The SY983 must be installed in one of the red colored fitting rails at the rear of

the frame, close to the mains connectors. In the case of Master / Slave operation,

both SY983 modules must be place here.

Redundant clock sources

The SY983 Sync module is the central clocking source for the Modular I/O

system. It provides all necessary clocks for proper system operation and can be

synchronized internally or externally. A Modular I/O frame can be equipped with

a second (redundant) SY983. Both sync modules must be installed in the red

“reserved” slots on the rear-plane of the frame.

Use the MASTER/SLAVE DIP to set the first SY983 as MASTER and the second

unit to SLAVE. Both SY983 modules should be locked to the same external sync

source. In this mode, both modules generate all clocks all the time with the

SLAVE disconnected from the frame sync busses. A red LED “SLAVE“ normally

lights indicating the SLAVE module is in “ready” status.

The SLAVE unit permanently watches the correct LOCK status of the MASTER.

In case of failure of the MASTER (losing external sync or fault on the module

hardware) the SLAVE unit takes over and continues clocking the frame. The red

SLAVE-LED blinks in this condition. If the MASTER unit returns to lock (new

sync signal, or new hardware) it automatically takes over the clock busses and

the SLAVE returns to the “ready” status.

Setting the frame ID

Set DEV0, DEV1, & DEV2 to “ON.”

DEV X

On the master sync module, set DEVX to “ON.” On a redundant sync module,

set to “OFF.”

Can Buss Termination

Can Buss Termination must be done on either the SY983 Sync or FC972

Remote. Lack of termination or double termination may result in communication

errors in the system. Typically, CAN Termination is done on the FC972.

Operation

Select a clock source by turning the front-pane; source rotary encoder with a

small screw driver. A LED display shows the respective combination of clock

frequency and sync mode.

The web interface shows the status of each sync module and provides access to

all configuration settings. In case of a severe sync problem, the Frame Controller

can send a SNMP trap and or activate a GPO. A higher-ranking monitoring

system may poll the status of the sync module(s) via SNMP

SY983 S