The front interface gives access to the Rx/Tx synchronization signal connectors, the two rotary switches, and 8 status LEDs.
These 8 LEDs indicate the status of the different functions of the board:
ON , means all FPGAs in the chassis (Primary and secondary boards) are in Slave Mode
ON , means that the Primary FPGA of the chassis is in Master Mode (1)
ON, in a multi-chassis system, indicates that the SYNC input signal comes from one OP5600 or other legacy-compatible chassis, on the stereo jack connector.
ON, in a multi-chassis system, means that the SYNC input signal comes from one OP7000 chassis on the HD15 connector.
ON means SYNC pulses are produced on the active OUT connector
ON means SYNC pulses are received at the active IN connector
ON means that the active connectors are the In/Out HD15 or audio connectors
ON means that the active connectors are the In/Out optical fiber connectors
In the case of synchronization with a single OP7000, even configured as a Slave, the Master LED remains on despite everything, because the OP7000 must regenerate the combined synchronization pulse for other possible OP7000s to be synchronized.
The first LED will always be MASTER ON, and the others will have their SLAVE LEDs on.
The first three connectors determine which of three (3) types of synchronization is used. Each connector is linked to two switches on the board, as shown in the table below. The last connector lets users select a chassis ID.