Algemene Theorie en Vaardigheden 2. April 2014 Theaterschool OTT-2

Transcription

1 Les 5 Showcontrol 1

2 Les 15 Point-to-Point Interfaces Parallel Interfaces Fast and efficient Large number of wires Short distances (PC-Printer) Old fashioned USB 2

3 Les 5 Point-to-Point Interfaces Serial Interfaces Synchronous Clock receiver and transmitter synchronized 3

4 Les 5 Point-to-Point Interfaces Serial Interfaces Asynchronous Receivers clock resyncs at beginning digital word (startbit) Universal Asynchronous Receiver/Transmitter (UART / interrupt) 4

5 Les 5 Point-to-Point Interfaces Sensors Control ports Eigenschappen van RS232, RS422, RS423 en RS485 RS232 RS423 RS422 RS485 Differentieel nee nee ja ja Max aantal zenders Max aantal ontvangers DMX Gebruiksmodes half duplex full duplex half duplex half duplex half duplex Network topologie point-to-point multidrop multidrop multipoint Max afstand (vlg. standaard) 15 m 1200 m 1200 m 1200 m Max snelheid op 12 m Max snelheid op 1200 m 20 kbs (1 kbs) 100 kbs 1 kbs 10 Mbs 100 kbs 35 Mbs 100 kbs Max stijgsnelheid 30 V/µs instelbaar n/a n/a Ontvanger ingangsweerstand 3..7 kω 4 kω 4 kω 12 kω Zender load impedantie 3..7 kω 450 Ω 100 Ω 54 Ω Ontvanger ingangsgevoeligheid ±3 V ±200 mv ±200 mv ±200 mv Receiver ingangsrange ±15 V ±12 V ±10 V V Max zender uitgangsspanning ±25 V ±6 V ±6 V V Min zender uitgangsspanning (belast) ±5 V ±3.6 V ±2.0 V ±1.5 V 5

6 Les 5 Point-to-Point Interfaces Connection DTE (Data Terminal Equipment) Terminals, computers DCE (Data Circuit terminating Equipment) Modems DTE DCE RS232, RS485 DTE DTE Null Modem 6

7 Les 5 Point-to-Point Interfaces Example Settings Terminal Emulator 7

8 Les 5 Point-to-Point Interfaces Read requests Write requests 8

9 Les 5 Point-to-Point Interfaces High Speed point-to-point connections Universal Serial Bus (USB 1.0 / 2.0 / 3.0) FireWire (IEEE 1394) Bluetooth (wireless, short-range) 9

10 Les 5 Point-to-Point Interfaces High Speed point-to-point connections FireWire (IEEE 1394) Bluetooth (wireless, short-range) 10

11 Les 5 Networking basics OSI Layering Packet Switching Encapsulation 11

12 Les 5 Networking basics Packet forwarding Unicast Multicast Broadcast Voor- en nadelen? 12

13 Les 5 Networking basics Network Types LAN Local Area Network WAN Wide Area Network Intranet Internet WLAN Wireless LAN 13

14 Les 5 Networking basics Network Types (continued) Ethernet Only transporting bits LLC / Logical Link Control layer MAC / Media Access Control layer PHY / Physical layer Various types Backwards compatible 10BASE-T 100BASE-T Fast Ethernet 1000BASE-T Gigabit Ethernet 10GBASE 14

15 Les 5 Networking basics Ethernet IEEE Multi-access (shared medium). Every Ethernet interface has a unique 48 bit address (a.k.a. hardware address). Example: C0:B3:44:17:21:17 The broadcast address is all 1 s. Addresses are assigned to vendors by a central authority. 15

16 Les 5 Networking basics Ethernet Media Access Control Carrier Sense Multiple Access Collision Detection (CSMA/CD) At collision, different retry times Nondeterminstic MAC Address 48-bit ID burned into ethernet card Frame Check Sequence 16

17 Les 5 Networking basics Ethernet 17

18 Les 5 Networking basics Ethernet Ethernet hardware Network Interface Cards Direct connection cables ( Null modem cable, of AutoMDIX) Repeating Hubs (Hubs / just repeat) Switching Hubs (Switches / MAC address resolution) Full Duplex Switches (no collissions) Line rate switches (best performing) Managed switches Routers Media convertors (for instance UTP Fibre optics) Bridges (for instance optical) Power over Ethernet (PoE) Kiss-Box 18

19 Les 5 Networking basics WiFi IEEE ( Wi-Fi ) WAP / Wireless Access Point Ifyoucanusea wire, usea wire! SSID / Service Set Identifier (network name) Security / WEP / WPA2 19