Precautions on using Active Star Coupler

TOSLINE-S20 Active Star Coupler (ASC25) Instruction Manual

6F3B0360

8.Precautions on using Active Star Coupler

(1)Precautions on the function of preventive means to single-wire breaking

Observe the following-listed cautions on using the function of preventive mean to single-

wire breaking.

∙Even if the function is set, it is not actuated for about 10 seconds after power "ON".

∙In the case that the power is "ON" while the function was not set, when the function is set in that state, (or when the switch is turned to "ON" position), the function is not actuated for about 10 seconds after the switch is turned "ON", and after that, the function is actuated.

∙In the case that ASC25s are connected in daisy-chain, (in the case of CH1 and CH10 are used), the actuation of the function that brings the resume operation between ASC25s becomes troublesome. Accordingly, in normal operation, we recommend to not use the function. Nevertheless, for a special case (e.g., the system operation is required to continue even under wire-breaking between ASC25s), the function may be actuated based on the judgment during system design.

(2)General precautions for the Active Star Coupler

∙Do not remove the unit cover.

∙On using the optical fiber cables, care should be paid not to contaminate the edge faces of the optical connectors. Since the optical parts have finely finished structures, care should be given not to apply shock and unnecessary force to the parts. For handling and cleaning of optical parts, refer to the "Installation and wiring" of the instruction manual.

∙Optical connectors of ports not in operation shall be provided with respective covers.

The mark indicates "DANGER". The label is attached to the portions that may

induce injury.

The precautions on the places around the terminal block with the mark are the following.

∙The protective cover on the terminal block at front face of the unit has sharp corners. Special care should be paid for handling the cover.

∙During power acceptance to the Active Star Coupler, skin contact to the terminals on the terminal block may induce electrical shock. Therefore, the protective cover shall be firmly attached. During power acceptance to the Active Star Coupler, do not touch the terminals.

TOSLINE S20