Instruction manual

14) Options

The Sigma can be tted with 2 option boards to extend its capacities.

The option boards are installed “cold” and are automatically recognised when

the master clock is switched on.

The option boards are programmed with the software on PC.

Attention, one Sound module counts for one extension card of the Sigma

(maximum 2 for the Sigma P).

14.1 Mechanical installation

WALL-MOUNTED version: Unscrew the

2 screws on the front, remove the cover

(for the lower cover, press on the 2 clips

(N) and slide it upwards). Disconnect the

at jumpers (Q) (be careful to connect

them the same way round on reassembly

) and install the option board(s) in the

slots provided (X1) and (X2).

Stick labels in front of the card.

For relay cards, stick only the safety

label.

RACK version : Open the rack unit and install the option board(s) in the slots

provided (X1) to (X2).

Stick labels in front of the card.

For relay cards, stick the safety label on the upper cover.

X1 X2