M8195A 65 GSa/s Arbitrary Waveform Generator

Transcription

1 Arbitrary Waveform Generator New AWG with the highest combination of speed, bandwidth and channel density Juergen Beck Vice President & General Mgr. Digital & Photonic Test Division September 10, 2014 Thomas Dippon Product Manager Digital & Photonic Test Division X X

2 New M8195A AWG Leading performance In Time und Frequency Domain > 20 GHz bandwidth > 32 GBaud symbol rate Closest Competitor Keysight 15 GHz 20 GHz Multitone from DC to 20 GHz 65 GSa/s sample rate 1, 2 or 4 channels Go where you have never been able to test before: in speed, in bandwidth and in channel density 32 Gb/s Explore your possibilities AWG Page 2

3 Symbol Rate Market and Technology Trends Big Data Demand drives Technology Changes Maximize Symbol Rate 32 Gbaud and beyond Maximize Bits per Symbol Amplitude & Phase modulation in optical links e.g. QPSK, QAMx Mobile apps and services, high resolution devices, internet of things drive high speed I/O, network and data center traffic Modulation Multi level signaling in digital links, e.g. C-Phy, PAMx Challenges: Transmission demand exceeds system capacity Cost-effective increase of capacity Pressure to release new technology on time Maximize # of carriers Parallel lines, subcarrier density Polarisation Mux, OFDM, DMT To maximize transmission within Phy layer, combine & optimize all dimensions for efficiency, cost, power, reach, reliabiliy etc. AWG Page 3

4 Target Applications Optical modulation e.g. in coherent optical transmission test applications up to 32 GBaud and beyond Digital interfaces in particular multi-channel links with multi-level signaling (e.g. NRZ, PAM4, DMT) up to 32 GBaud. E.g. backplane, mobile, display Ultra-short, precise, user defined pulses for physics & advanced research Aerospace & Defense such as satellite, radar and wideband wireless applications that require up to 20 GHz instantaneous bandwidth and ~50 db dynamic range, e.g. fast hopping across frequency bands AWG Page 4

5 Application Requirements

6 Application Requirements Coherent Optical Communication Need higher data throughput: 100 G 400 G 1 Tbit/s Requirements for a test instrument: Flexibilty to address different modulation schemes Clean signal to test your device and not your instrument Bandwidth at least 20 GHz 4 channels to support dual polarization (= 2 pairs of I/Q signal) QPSK QAM128 OFDM AWG Page 6

7 Application Requirements Digital Interfaces Higher data throughput continues to be the challenge. It can be achieved in various ways: Faster toggle rate - jitter & frequency dependent loss for higher data rates More parallel signals - chip I/O and board real-estate is limited PAM8 Using modulation formats other than NRZ - multi-level signaling formats, e.g. PAM4, C-PHY - Multi-carrier modulation, e.g. DMT Clean signal - low jitter Multi-level signal with distortions (Example: C-PHY) Page

8 Application Requirements Physics & Advanced Research Be one step ahead of the industry - Ultra-short pulses with arbitrary shapes to stimulate individual electrons - Precisely timed pulses on several channels in parallel to fire multiple high energy lasers High-speed AWGs are now fast enough to address these applications directly They are the most flexible stimulus instruments to work at the edge of technology AWG Page 8

9 Application Requirements Aerospace Defense & Wireless Needs: Signal fidelity and wide bandwidth at the same time Modulation bandwidths of 2 GHz and more Fast hopping across a whole frequency band Simulation of multiple emitters and complete environments High-speed AWGs can now generate RF signals in C, L, S, X and Ku band up to ~20 GHz directly without external upconversion They provide ultimate flexibility for pulse patterns, wide modulation bandwidths and fast hopping (Electronic Warfare ( EW)) Environmental simulation for EW AWG Page 9

10 Keysight Arbitrary Waveform Generators Proprietary Technology - Unique Performance Choose the performance you need High Resolution Wide Bandwidth M933xA M9330A / N8241A 15 bit, 1.2 Gsa/s Best signal quality in PXI and LXI form factor 81180B 81180B 12 Bit, 4.6 GSa/s 1 GHz analog bandwidth Economic version M8190A M8190A 14 bit, 8 GSa/s / 12 bit, 12 Gsa/s 5 GHz analog bandwidth Best signal quality and longest playtime SFDR: up to -90 dbc. 10 db more than the closest competitor M8195A M8195A 8 bit, 65 GSa/s 20 GHz analog bandwidth Highest speed, bandwidth and port density in a 1-slot AXIe module Jitter 5 ps 32 Gb/s SFDR: up to -80 dbc Integrated 16-tap FIR filter Page

11 AWG

12 Go Where you Have Never Been Able to Test Before In Speed, in Bandwidth and in Channel Density Sample rate 54 GSa/s to 65 GSa/s per channel > 20 GHz bandwidth > 32 GBaud symbol rate 1, 2 or 4 differential channels per 1-slot AXIe module Up to 16 GSa of waveform memory per module (*) 8 bits of vertical resolution Amplitude up to 2 Vpp(diff.) or 1 Vpp(se), voltage window V Ultra low intrinsic jitter (RJrms < Gb/s PRBS ) 16-tap FIR filter in hardware for frequency response compensation (*) Multi-module synchronization up to 16 channels per 5-slot AXIe chassis New AWG Explore your possibilities AWG Page 12 (*) Rev 2

13 M8195A Block Diagram Precise synchronization down to femto-seconds 2 Vpp(diff) output amplitude, 20 GHz analog bandwidth Extended waveform memory (16 Gbyte) (*) Internal (on-chip) waveform memory (4 * 256 Kbyte) 16 tap FIR(*) 65 GSa/s DAC 4 differential outputs FPGA Trigger (*) 16 tap FIR(*) 65 GSa/s DAC 16 tap FIR(*) 65 GSa/s DAC DSP processing for future enhancements 16 tap FIR(*) 65 GSa/s DAC 2 of the 4 may be designated as markers Clean signals through frequency and phase response correction AWG Page 13 (*) Rev 2

14 Accurate and Repeatable Test Results Out-of-the-box calibration to ensure clean signal at the front connector In-situ calibration extend clean signal to the receiver test point S-Parameters of channel are embedded or de-embedded Frequency/phase response is measured in-system and then de-embedded QPSK, 32 Gbaud PRBS 6 Gbit/s Without correction With correction Without correction With correction AWG Page 14

15 Target Applications Optical modulation e.g. in coherent optical transmission test applications up to 32 GBaud and beyond Digital interfaces in particular multi-channel links with multi-level signaling (e.g. NRZ, PAM4, DMT) up to 32 GBaud. E.g. backplane, mobile, display Ultra-short, precise, user defined pulses for physics & advanced research Aerospace & Defense such as satellite, radar and wideband wireless applications that require up to 20 GHz instantaneous bandwidth and ~50 db dynamic range, e.g. fast hopping across frequency bands AWG Page 15

16 Optical Coherent Communication AWG

17 Generation of Unlimited Number of Modulation Formats Confidentiality Label Page

18 and very high throughput 32 GBaud, 64 QAM = 192 Gb/s data throughput EVM 3.1 % Span 51.2 GHz AWG Page 18

19 Example - OFDM Example: 10 GHz wide OFDM modulation with QAM16 subcarriers AWG Page 19 19

20 adding Deterministic Impairments to your Signal n Example: symbol rate of 28 GBaud (56 Gbit/s) Clean Signal With different amounts of jitter added AWG Page 20

21 PAM4 Signal with Non-equidistant Voltage Levels For usage of external amplifier and Mach-Zehnder modulator beyond linear operating range AWG Page 21

22 Measurement Setup Block Diagram Laser DAC1 I X-polarization DAC2 Q DAC3 I DAC4 AWG Amplifier Q MZM Y-polarization PBS EDFA Fiber Coherent Receiver AWG Page 22

23 Out-of-the Box Calibration & In-situ calibration Pre-distortion techniques for frequency and phase response compensation AWG 33 GHz Oscilloscope I Q I Q Optionally: optimizing the second I/Q pair at the same time Vector Signal Analysis (VSA)software to determine frequency and phase response AWG Page 23

24 In-situ-calibration End-to-end equalization Laser1 DAC1 I X-polarization DAC2 Q DAC3 I DAC4 Y-polarization AWG Amplifier Q MZM PBS EDFA Fiber Coherent Receiver Measure frequency/phase response as determined by the coherent receiver End-to-end calibration of the whole transmission system This includes the characteristic of the receiver as well AWG Page 24

25 Optimize your Waveform Pulse Shape affects Signal Waveform Raised cosine a = 0.05 Raised cosine a = 0.35 Raised cosine a = 1.0 rectangular Motivation AWG Page 25

26 32 Gbaud Signals and Beyond Integer vs. Fractional Re-sampling Factor Integer re-sampling Factor Fractional re-sampling Slightly lower jitter for clean signals, but cannot add infinitesimally small small amount of timing distortions Intrinsic jitter slightly higher, but distortions can be added smoothly Fractional re-sampling allows signals > 32 GBaud - AWG Page 26

27 M8195A Re-sampling factor < 2 Integer Re-sampling 32 Gb/s Fractional Re-sampling 35 Gb/s Factor 2 Sample Rate 64 GSa/s Data Rate 32 Gb/s PRBS 11 Factor 1.8 Sample Rate 64 GSa/s Data Rate 35 Gb/s PRBS 11 Pulse shaping: raised cosine, alpha = 1.0 Pulse shaping: raised cosine, alpha = 1.0 Fractional re-sampling allows signals > 32 Gbaud AWG Page 27

28 M8195A Re-sampling factor > 2 Integer Re-sampling 32 Gb/s Fractional Re-sampling 25 Gb/s Factor 2 Sample Rate 64 GSa/s Data Rate 32 Gb/s PRBS 11 Factor 2.6 Sample Rate 64 GSa/s Data Rate 25 Gb/s PRBS 11 Pulse shaping: raised cosine, alpha = 1.0 Pulse shaping: raised cosine, alpha = 1.0 At lower baud rates (i.e. re-sampling factor > 2), fractional re-sampling does not cause any performance loss AWG Page 28

29 Emulate Optical Distortions in the Electrical Space Deterministic and precise testing with complex impairments E.G. Phase Noise, OSNR, PMD Traditional setup Pattern Gen RefTx or golden Line Card Network or Fiber (CD, PMD) OSNR Gen. DUT (100/400G Receiver) Error Detector Test setup with Keysight M8195A Error Detector DUT AWG (100/400G - or - Receiver) AWG ADC ADC ADC ADC DUT (DSP) Digital Coherent Receiver DSP Test AWG Page 29

30 Example Impairment: Phase Noise 2 MHz Linewidth 30 5 MHz Linewidth 10 MHz Linewidth AWG Page 30

31 M8195A in Coherent Optical Applications Cost-effective increase in capacity Endless modulation formats for higher data throughput Generates clean and distorted signals at 32 Gbaud and beyond Provides 4 independent analog outputs for dual-polarization optical applications Uses out of the box and in-situ calibration to achieve a clean signal at the device under test 16 QAM at 32 Gbaud with < 4% EVM Emulate optical distortions in the electrical space QPSK Signal with added phase noise; emulating a 2 MHz laser line width Optical Modulation GUI AWG Page 31

32 Digital Interfaces AWG

33 M8000 BER Series of BER Test Solution Fast, accurate receiver characterization 16 Gb/s J-BERT M8020A, 1 2 channel 16 Gb/s J-BERT M8020A, 4 channel 32 Gb/s J-BERT M8020A, 1 channel M8070A Software M8195A > 32 Gbaud multi-level generator, 4 channel* AWG Page 33 * Integration in M8070A planned

34 M8195A Superior Signal Quality Intrinsic Jitter measured with a 32 Gb/s PRBS signal AWG Page 34

35 But the M8195A Can Do More Flexible change of signal parameters such as rise time in software Click for animation AWG Page 35

36 C-PHY signals generated by M8195A LP HS Mix of low power and high-speed mode on 3 parallel lanes Clean 2.5 GBaud C-PHY signal All signals out of a single M8195A module C-PHY signal with distortions AWG Page 36

37 M8000 Software with C-PHY Support AWG Page 37

38 Higher Order PAM Modulation PAM4 PAM8 PAM16 AWG Page 38

39 Adding Distortion Cost-effective PAM-4 solutions Adding impairments without external hardware Transition times, ISI, Jitter, DCD, noise, Industry leading source for PAM-4 Variable transition times Variable jitter Variable ISI Combination of impairments AWG Page 39

40 Loss (db) Channel Embedding and De-embedding for PAM4 Using S-Parameters or measured in-system Cost effective multi-level, multi-channel capability Precise signal at any test point in the test setup - Test point moves closer to RX - Need to compensate for channel loss and test setup Compliance test requirements - Distortions such as jitter, ISI, noise, pre-, de-emphasis - Emulation of worst case channels 0 Transmitter (TX) -5 TP1 TP2 TP Channel Receiver (RX) Frequency (GHz) AWG Page 40

41 Industry leading source for PAM-4 M8195A in Digital Applications Cost-effective multi-level, multi-channel capabilities Variable transition times Flexible stimulus for any modulation format: NRZ, PAMx, DMT, Adding impairments without external hardware Transition times, ISI, Jitter, DCD, noise, Clean & distorted signals up to 32 Gbaud S-Parameter embedding / de-embedding Variable jitter Variable ISI AWG Page 41 Combination of impairments

42 Physics & Advanced Research AWG

43 Research the World of Tomorrow Ultra-short but precise pulses down to ~100 ps pulse width AWG Page 43

44 using Versatile Pulse Shaping Precise waveform control with 65 GSa/s or 16 ps sample period AWG Page 44

45 High Order of Modulation QAM1024 with EVM < 1 % AWG Page 45

46 M8195A in Physics and Advanced Research Release new technologies in time Generates ultra-short pulses down to less than 100 ps and transition times of 18 ps With 65 GSa/s or 16 ps sample period, the pulse shape can be determined very precisely Out-of-the-box and in-situ calibration helps to generate the desired signal shape at the device under test AWG Page 46

47 Aerospace & Defense and Wireless AWG

48 M8195A in A/D and Wireless Applications Explore your possibilities by using wide Bandwidth Wide bandwidth signal generation Emitter simulation of in C, L, S, X and Ku band up to 20 GHz directly without any external up-conversion DC 20 GHz AWG Page 48

49 M8195A Noise-Power-Ratio Measurements Flat Frequency response across wide bandwidth Multitone 100 tones 10 GHz 15 GHz Notch 12.5 GHz AWG Page 49

50 Complex Spectral Environment Simulation Using a wideband AWG to simulate 8 emitters in X-band 8 Simulated Radar Emitters with Different Frequencies, Amplitudes, Pulse Widths, PRIs, and Delays AWG Page 50

51 M8195A Multi Channel Support Scale and expand to your needs 4 channels 16 channels and 1 synchronization Module (*) AWG Page 51 (*) Rev 2

52 M8195A in A/D and Wireless Applications Explore your possibilities by using wide BW Wideband wireless communication signals up to 20 GHz with flexible modulation schemes (nqam, OFDM, etc.) Emitters simulation of in C, L, S, X and Ku band up to 20 GHz directly without external up-conversion Extremely wide modulation of radar pulses with bandwidths (DC to 20 GHz instantaneous BW) Fast hopping in picoseconds across a whole frequency band Emulation of multiple phase coherent emitters AWG Page 52

53 Software Soft Front Panel control of all instrument parameters file import basic waveform generation Digital applications M8000 Bit-Error-Ratio Test Series Software* Optical applications dedicated user interface to setup dual-polarization I/Q modulations General purpose programming directly from MATLAB, SystemView, Waveform Creator, LabVIEW, or C++ through either SCPI or IVI-COM AWG Page 53 * Planned

54 Summary Leading performance 65 GSa/s sample rate > 20 GHz bandwidth > 32 GBaud symbol rate 1, 2 or 4 channels Coherent optical applications Multi-level, multi-channel digital applications Advanced research & physics applications A/D and wireless applications up to 20 GHz Go where you have never been able to test before: in speed, in bandwidth and in channel density. Explore your possibilities AWG Page 54

55 Arbitrary Waveform Generator New AWG with the highest combination of speed, bandwidth and channel density More information &

56 Back-Up AWG

57 Example Impairment: PMD (1st and 2nd order) 15ps PMD, 460ps^2 SOPMD AWG Page 57

58 M8000 Software Architecture Application Scripting Remote Interface User Interface M8000 Platform Test Executive Application Layer Instrument Layer Integration planned DUT Evolve over time AWG Page 58