Dacar Automotive Ethernet

LEONI is not satisfied with and aims to exceed this standard. LEONI’s Dacar Ethernet cables have such defined transmission properties as the high mode conversion loss required for the use of unshielded cables. The sheathed cable’s design enables minimising of such adverse effects as ageing, dirt and humidity when the cable harness is fitted. We offer shielded LEONI Dacar Ethernet cables for use in EMC sensitive installation spaces. These are already being deployed in series production for surround-view camera systems. Future cable generations will play an important role; for instance, in linking components for Car-to-X communication. We are currently finalising solutions for 1 Gbit data transmission and are working on solutions for Multi-Gigabit.

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The introduction of Ethernet for automotive applications forms the basis for ongoing bandwidth growth. The 100Base-T1 resp.1000Base-T1 standard applies for common data communication. This facilitates bidirectional data transfer at 100 Mbps and 1 Gbps ethernet standard across a single, unshielded twisted-pair cable.
For single-pair, unshielded data cables, OPEN Alliance SIG has specified the following HF parameters for 100 Mbps cables:

  • Impedance:
    Z [Ω] 100 ±10
  • Insertion loss:
    IL [dB/m] 0.06 at 1 MHz, 0.16 at 10 MHz, 0.31 at 33 MHz, 0.45 at 66 MHz
  •  Return loss:
    RL [dB] 20 at 1 MHz, 20 at 20 MHz, 14.8 at 66 MHz
  • Longitudinal conversion transfer loss:
    LCTL [dB]: 46 at 1 MHz, 46 at 50 MHz, 34 at 200 MHz
  • Longitudinal conversion loss: LCL [dB]: 46 at 1 MHz, 46 at 50 MHz, 34 at 200 MHz

LEONI Dacar Ethernet cables are fulfilling these specifications with the twisted-pair structure – also under adverse environmental conditions.

HB Cables stock a range of Dacar Ethernet cables:

  • Dacar 546
  • Dacar 626
  • Dacar 547