FO-CAN and FO-CAN-R fiber-optic CAN link

A CAN bus carried over fiber at up to 1 Mbit/s, to monitor or stimulate equipment during EMC tests.

1 Mbit/s: Max CAN rate
> 30 h: On 3 AA alkaline batteries
60 Ω, 120 Ω or ∞: Termination
200 to 300 V/m: EMC validation, 500 kHz to 18 GHz

LinkBidirectional, 20 m of fiber at 1 Mbit/s
FO-CAN-R receiver4 channels, bench-top or rack-mount
Pulsed field600 V/m, 1 to 2.5 GHz

FO CAN and FO CAN R Manual (PDF)

Request a quote See the specifications

Two modules make a CAN link

Two FO-CAN modules joined by a fiber-optic cable make a differential CAN link, to monitor or stimulate the equipment under test. Up to four FO-CAN modules can also work with one FO-CAN-R, a 4-channel bench-top or rack-mount receiver.

The circuitry is designed for low latency, so the link stays bidirectional at 1 Mbit/s over 20 m of fiber. It works with most differential CAN protocols. A switch sets the termination to 60 Ω, 120 Ω or ∞. The CAN pin-out is the one most equipment uses, so no custom cable is needed.

Three AA alkaline batteries run a module for more than 30 hours, and rechargeable cells also fit. The shielding gives high immunity to EMI and EMP, with low radiated emissions. The modules are validated for EMC up to 200 V/m from 500 kHz to 18 GHz, and 600 V/m pulsed (5 % duty cycle, 5 µs rise time) from 1 to 2.5 GHz.

Specifications

Channels	1 (FO-CAN-R receiver: 4 channels, bench-top or rack-mount, universal AC input)
CAN bit rate	1 Mbit/s (bidirectional link, 20 m of fiber at 1 Mbit/s)
Termination	60 Ω · 120 Ω · Open (switch on FO-CAN, jumper on FO-CAN-R)
Battery life	30 h (minimum)
Battery type	AA alkaline (3 batteries)
Dimensions	155 × 60 × 25 mm (FO-CAN; FO-CAN-R receiver 205 × 425 × 45 mm)
Weight	300 g (FO-CAN; FO-CAN-R receiver 1.75 kg)
EMC immunity, radiated field	200 V/m (300 V/m from 500 kHz to 1 GHz, 200 V/m from 1 to 18 GHz)
EMC immunity, pulsed field	600 V/m (5 % duty cycle, 5 µs rise time)