Jitter and Real-Time Eye Oscilloscope Webcast

Transcription

1 Jitter and Real-Time Eye Oscilloscope Webcast May 28, 2015 Daniel Bogdanoff Oscilloscope Product Manager

2 Agilent s Electronic Measurement Group is now Keysight Technologies. Keysight Technologies Inc. is the world's leading electronic measurement company, transforming today's measurement experience through innovation in wireless, modular, and software solutions. The company's 9,500 employees serve customers in more than 100 countries. Visit us at Effective June 1, Keysight will resume responsibility for selling and supporting high-performance products to all customers in the U.S. and Canada through its direct sales force. Questions? Contact Keysight Technologies Toll-free at

3 Agenda Jitter & Real Time Eye Webcast 3 InfiniiVision 6000 X-Series Oscilloscope Overview Jitter 101 What am I looking for? Real-Time Eye Why does jitter matter? Infiniium Offline Deep analysis Wrap up

4 InfiniiVision vs. Infiniium Oscilloscopes InfiniiVision X-Series Embedded operating system Small form factor Fastest waveform update rate Infiniium S-Series Windows operating system Deep analysis Deep memory Jitter and Real Time Eye Webcast 4

5 InfiniiVision 6000 X-Series Oscilloscopes Key Features 6 tools in 1 Oscilloscope channels Digital channels (MSO) Serial protocol analysis WaveGen x2 Digital Voltmeter 10-digit counter-totalizer 1 GHz 6 GHz upgradable bandwidth Jitter and real-time eye diagram 12.1 capacitive multi-touch screen with gesture support Voice Control Jitter and Real Time Eye Webcast 5

6 Traditional CPU Architecture

7 Keysight s MegaZoom IV Architecture

8 Agenda Jitter & Real Time Eye Webcast 8 InfiniiVision 6000 X-Series Oscilloscope Overview Jitter 101 What am I looking for? Real-Time Eye Why does jitter matter? Infiniium Offline Deep analysis Wrap up

9 Jitter 101 What is it? Real vs. Ideal world Jitter is where the signal s edges actually are compared to where we want them to be. Can cause system errors Caused by: System phenomena Crosstalk Impedance mismatch Data-dependent phenomena Intersymbol interference (ISI) Duty-cycle distortion Random noise Thermal noise (ktb) Shot noise (e- & hole) Pink noise (1/f) Jitter and Real Time Eye Webcast 9

10 Jitter 101 Comparing edges, clock vs. data Analyzing Clock Jitter Periodic signal Straightforward with histogram Analyzing Data Jitter Aperiodic Embedded Clock Must have clock recovery Oscilloscope must create a virtual clock for jitter analysis Jitter and Real Time Eye Webcast 10

11 Lab 1 Finding a source of DATA jitter Finding jitter ns, 500mv Serial Data with Jitter, now it gets tricky! Display clock recovery (Math) check the frequency of math signal 20 us Set up histogram, RTE, 20 ns Spike will effect our eye 6.25 Mb/s Data rate, 500 khz Loop bandwidth still seeing issue Update this text 11

12 Eye Diagram and RTE RTE Effects of Jitter 20 ns/ 500 mv/div Clock w/jitter Analyze -> RTE Note that the eye is closed from jitter Would cause lots of errors at the receiver Histogram Bimodal so deterministic jitter as well Let s simulate a phase lock loop in our receiver Clock recovery 1 st order PLL, 500 khz, 5M New eye is much more open Clock recovery 1 st order PLL to 2 MHz Now histogram is Gaussian, meaning that PLL removed the majority jitter Update this text 12

13 Jitter Demos Jitter and Real Time Eye Webcast 13

14 More Jitter Family Tree Jitter and Real Time Eye Webcast 14

15 Agenda Jitter & Real Time Eye Webcast 15 InfiniiVision 6000 X-Series Oscilloscope Overview Jitter 101 What am I looking for? Real-Time Eye Why does jitter matter? Infiniium Offline Deep analysis Wrap up

16 More Jitter Analysis EZJIT Plus Jitter Analysis Software Capabilities RJ/DJ separation Tail-fit separation algorithms Oscilloscope jitter removal Composite histogram views Bathtub curve down to 10E-18 BER Clock Recovery Jitter and Real Time Eye Webcast 16

17 InfiniiVision 6000 X-Series Oscilloscopes Key Features 6 tools in 1 Oscilloscope channels Digital channels (MSO) Serial protocol analysis WaveGen x2 Digital Voltmeter 10-digit counter-totalizer 1 GHz 6 GHz upgradable bandwidth Jitter and real-time eye diagram 12.1 capacitive multi-touch screen with gesture support Voice Control Jitter and Real Time Eye Webcast 17

18 6000 X-Series Oscilloscopes 1 GHz 2.5 GHz 4 GHz 6 GHz $18,500 $23,000 $30,300 $39,000 (MSO Upgrade $3,500) Jitter and Real Time Eye Webcast 18

19 6000 X-Series Oscilloscope Applications Model Number Bandwidth, Application, and Feature Upgrades After purchase bandwidth upgrade & digital channels upgrade DSOX6B25T402BW 2.5 GHz to 4.0 GHz bandwidth upgrade DSOX6B25T602BW 2.5 GHz to 6.0 GHz bandwidth upgrade DSOX6B40T602BW 4.0 GHz to 6.0 GHz bandwidth upgrade DSOX6B25T404BW 2.5 GHz to 4.0 GHz bandwidth upgrade DSOX6B25T604BW 2.5 GHz to 6.0 GHz bandwidth upgrade DSOX6B40T604BW 4.0 GHz to 6.0 GHz bandwidth upgrade DSOX6MSO 6000 X-Series MSO Upgrade Serial protocols DSOX6EMBD DSOX6COMP DSOX6USBFL DSOX6USBH DSOX6AUTO DSOX6FLEX DSOX6AUDIO Audio serial trigger and decode (I 2 S) DSOX6AERO MIL-STD 1553 & ARINC 429 serial trigger & decode Measurement applications DSOX6WAVEGEN2 DSOX6DVMCTR DSOX6PWR DSOX6MASK DSOX6USBSQ DSOX6VID DSOX6FPGAX N8900A 34840B Embedded serial trigger and decode (I 2 C, SPI) Computer serial trigger and decode (RS232/UART) USB 2.0 Full/Low Speed serial trigger and decode USB 2.0 Hi-Speed serial trigger and decode Automotive serial trigger and decode (CAN/LIN) FlexRay serial trigger and decode Dual Channel WaveGen 20 MHz AWG Integrated Digital Voltmeter and 10 digit counter Power analysis application Mask limit testing USB 2.0 signal quality test Enhanced video/tv application package FPGA dynamic probe option for Xilinx Infiniium offline oscilloscope software BenchVue Jitter and Real Time Eye Webcast 19

20 6000 X-Series Oscilloscopes Free! application bundle enable every available option on the 6000 X-Series oscilloscopes with a free DSOX6APPBNDL Effective 1-June through 30-November Jitter and Real Time Eye Webcast 20

21 Questions and Thank You!