Quadrax and twinax contacts are designed for transmission of Ethernet high speed signal in harsh environments where integrity and reliability are essential. Consisting of an outer shield and either two (twinax) or four (quadrax) inner contacts, the high speed copper contacts can be setup in a number of formats including MIL-DTL-38999, ARINC 600, MIL-DTL-83527 and D-subminiature.
While serial data bus has long served as the backbone bus in systems, more demanding data intensive mission requirements including video, audio and data-distribution, have pushed serial data bus of 1 Mbit/Sec beyond the limits of its bandwidth. Today’s serial transmission rate will no longer support these requirements.
However, the commercially available interconnects used for these different topographies will also not survive in the harsh environmental and mechanical environments required for some systems. This shortfall has resulted in the application of high-speed office-based bus structures adapted for higher data rate systems.
To achieve the data rates that are required for the above listed protocols differential twinax and quadrax contacts were developed. The signal to signal and signal to shield characteristic impedance is maintained throughout the connector pair. A true twinaxial connector interface ensures signal integrity while minimizing jitter and data rate errors.
Consist of an outer shield with two inner contacts spaced to form a 100 Ohm, 110 Ohm or 150 Ohm controlled impedance differential pair.
Consist of an outer shield with four inner conductors paired orthogonally forming two 100 Ohm, 110 Ohm or 150 Ohm controlled impedance differential pairs. Quadrax contacts offer several advantages for high data transfer rates, low power consumption and excellent EMI compatibility. Four strategically spaced inner contacts form two 100, 110 or 150 ohm matches impedance differential pairs. Outer contact has rugged wall section for durability
Smiths Connectors is currently shipping connectors with Twinax and Quadrax contacts in all of the following formats:
Making sure that properly shaped pulses reach the receiver.
A graph that overlays thousands of pulses as a easy way to check their Signal Integrity.
Undesired coupling between nearby lines.
Difference in Time Delay between Different Signal Paths
Noise induced Timing Errors
Risetime & Falltime
Giga Bits per Second
Pseudo Random Bit Stream
Bit Error Rate
Bit Error Rate Test or Tester
Near End Crosstalk
Far End Crosstalk
Low-Voltage Differential Signaling
An interconnection panel into which PC Boards can be plugged