Electrical Concepts For Interconnect Professionals

Transcription

1 Electrical Concepts For Interconnect Professionals

2 Overview What are common protocols What questions should you ask What are Glenair s solutions

3 Proliferation of High Speed Electrical Systems in Mil\Aero Built-In High Speed Communications

4 Proliferation of High Speed Electrical Systems in Mil\Aero Demand for Data

5 Communication System\Networks: What should we consider Protocol Data Rate Distance Hardware Cost\Availability

6 What Happens at High Speed\Frequency? Electromagnetic Energy Travels Outside of the Conductor Wavelengths Get Shorter

7 What Happens at High Speed\Frequency? In High Speed Systems We Have To Closely Consider: Tighter Mechanical Tolerances \ Smaller Dimensions Careful Consideration of Material Selection

8 Communication Basics Basic Definitions. Bandwidth Data Rate Insertion Loss Impedance VSWR Jitter and Skew

9 High Speed Transmission Bandwidth vs. Data Rate Data Rate: The number of BITS transmitted per unit time. This includes data compression via specialized IC s. Bandwidth: Frequency of the carrier wave. Ultimate Goal: Maximize Bandwidth Minimize Data Rate

10 High Speed Transmission Insertion Loss Power (Transmit) Power (Received) IIIIIIIII LLLL = 10 log 10 PPPPP TTTTTTTT PPPPP RRRRRRRR Contributors to Insertion Loss: Material Absorption Radiation

11 High Speed Transmission Impedance is frequency dependent Direct Current (DC) Alternating Current (AC)

12 High Speed Transmission Voltage Standing Wave Ratio (VSWR) And Return Loss Power (Transmit) 100 Ohm 100 Ohm Power (Received) Impedance Perfectly Matched: VSWR 1 No Return Loss

13 High Speed Transmission Voltage Standing Wave Ratio (VSWR) And Return Loss Power (Transmit) 100 Ohm 50 Ohm Power (Received) Impedance Mismatch: VSWR>1 High Return Loss

14 Getting Practical Cabling Protocols Drive Cable Choice Single Ended Transmission DC to 200KHz Differential Pair DC to 3GHz

15 Electrical Communication Basics Single Ended Transmission, A Simple Scheme, However

16 Electrical Communication Basics Differential Data Transmission Low Power and Noise Immune This is why they are called differential

17 Electrical Communication Basics Why are wires twisted. EMI\RFI Source So both wires are equally exposed.

18 Impedance of a Differential Cable Z l ε r R l R

19 Bandwidth X Distance

20 Common High Speed Differential Protocols (1) Mil\Aero Data Bus MIL-STD-1553 CANBUS MIL-STD-1760 ARINC-429 IEEE-1394 (Firewire) ARINC-664 (AFDX) (2) Ethernet/Networking 10-BaseT 100-BaseT 1000-BaseT 10G-BaseT (3) Peripherals and Displays USB 2.0/3.0 SATA HDMI Displayport

21 (1) Mil\Aero Protocols Protocol # of Pairs Cabling Spec Bandwidth Cable Construction CANBUS\ ARINC (ARINC-429) 1 Pair Per Channel 1 Pair per Channel 100 Ohm < 1 MHz Twisted Pair Ohm 1 MHz Twinax ARINC-664 (AFDX) 2 Pairs 100 Ohm 5-10 MHz 2 Twisted Pairs

22 (2) Ethernet/Networking Protocols Protocol # of Pairs Simplex\ Duplex Cabling Spec Bandwidth Cable Construction 10BASE-T 2 Simplex CAT3/4 5-MHz 4 UTP 100BASE-T 2 Simplex CAT4/5 20-MHz 4 UTP 1000BASE-T 4 Duplex CAT5/5E 100-MHz 4 STP 10GBASE-T 4 Duplex CAT 6/6A 500-MHz 4 STP

23 (3) High Speed (Peripheral and Display) Protocols Protocol Pin Count Cabling Spec Bandwidth Data Rate Cable Const. USB Ohm 400 MHz 480 MB/s 1 Data Pair 1 Power Pair esata Ohm Up to 4.5 GHz 3 GB/s 2 Data Pairs USB Ohm Up to 7.5 GHz 5 GB/s 3 Data Pairs 1 Power Pair DisplayPort Ohm Up to 540 MHz 5 GB/s-17 GB/s 4 Data Pairs HDMI Ohm 340 MHz 10 GB/s 4 Data Pairs

24 Data Protocols: Bandwidth X Distance

25 Connector Performance with Standard Contacts and Suitable Cables

26 Controlled Impedance Contacts

27 Product Positioning for High Speed: (1) Mil-Aero Data Bus Protocols (CANBUS, 1553) Recommend any standard or high-density connector series equipped with controlled impedance OR standard signal contacts

28 Product Positioning for High Speed: (2) Ethernet/Networking Protocols (10-BaseT to 1000-BaseT) Recommend any high-density connector series equipped with Quadrax, standard signal, RJ45, USB, etc

29 Product Positioning for High Speed: (3) Peripheral and Display Protocols (esata, USB 3.0, HDMI) Recommend any Ultra-high-density connector series equipped with controlled impedance, standard signal, OR Fiber Optics

30 High Speed Product Roadmap Product Improvements & Extensions Matched Impedance Designs (Connectors, Contacts and Cables) Electrical and Electro-optical Actives

31 Product Positioning: Series 80 High-Speed Mighty Mouse = for esata, USB 3.0 and Higher

32 Product Positioning: YES we do Ruggedized RJ-45 and USB Ethernet Connectors

33 In Development: High-Speed Micro-D Pre-Terminated to Flex

34 High Performance Bulk Cable Glenair Branded & Labeled w\part Number Mil\Aero Temperature Rated (>150-C) Available in Bulk For common protocols: SATA, USB, CAT 6/6A, Coax

35 Media Conversion What is it? 1000Base-T (Electrical Ethernet) 4 Twisted Pairs M\C Integrated Circuit Power 5V-40V Optical Module 2 Fibers 1000Base-SX\LX (Optical Ethernet) Electrical Protocol Optical Protocol Optical Range 1000BASE-T 1000BASE-SX Multimode m 1000BASE-T 1000BASE-LX Singlemode 5 Km

36 Introducing our First M\C:

37 The Origin of Twisted Pair Alexander Graham Bell

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