Physical layer based repeaters are used to establish a physical coupling of two or more segments of a CAN bus system. They can be used to implement tree or star topologies as well as for long drop lines. In addition, network segments can be electrically decoupled using a galvanically isolated repeater.

* EMS Wuensche

• EMS CRep DS102 : CRep DS102 is a compact repeater for CAN networks. CRep is completely enclosed in epoxy resin and designed for use in cable channels outside a control cabinet. Typical delay 100ns.
• EMS CRep Opto : CRepOpto is a galvanically isolating repeater for CAN networks. It is designed for railmount application within a control cabinet. CRepOpto provides the capability of error isolation.

* IXXAT

• CAN-Repeater : ISO 11898-2 CAN Repeater; can be equipped with a low-speed bus interface (ISO 11898-3), allowing the operation as high/low-speed converter. Its galvanic isolation isolates both CAN segments from each other as well as from the power supply.
• CAN-CR200 Modular ISO 11898-2 CAN Repeater; Several CAN-CR200 can be connected to a CAN-hub via the integrated backbone bus; automatic recognition and separation of a defective segment from the rest of the network, after elimination of defect, segment is switched into the network again; galvanic isolation between CAN segments as well as power supply.
• IXXAT CAN-CR220 : CAN interface according ISO/IS 11898-2 with CAN choke. Two Sub-D9 connectors. CAN 1, CAN 2 and power supply are galvanic isolated against each other. Galvanic isolation 4 kV/1 second, 2.5 kV/60 seconds. CAN termination resistors are integrated (can be disabled).Delay 200 ns.
• CAN-CR210/FO stackable converter from ISO 11898-2 to fiber optic cable; CAN termination resistors integrated (switchable); integrated backbone bus; automatic recognition and separation of defective segment (see CAN-CR220)
• FO-Repeater converter from ISO 11898 to fiber optic cable; CAN termination resistors integrated (switchable); automatic recognition and separation of defective segment (see CAN-CR220)