m8195a 65 gsa/s arbitrary waveform generator · pdf file · 2014-09-11qpsk qam128...
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M8195A 65 GSa/s Arbitrary Waveform Generator
September 10, 2014
New AWG with the highest combination of speed, bandwidth and channel density
Juergen Beck
Vice President & General Mgr.
Digital & Photonic Test Division
Thomas Dippon
Product Manager
Digital & Photonic Test Division
X
X
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New M8195A AWG
M8195A 65 GSa/s
AWG
2
Go where you have never been able to test before:
in speed, in bandwidth and in channel density
Explore your possibilities
Multitone from
DC to 20 GHz
Closest Competitor
Keysight
15
GHz
20
GHz
Leading performance
In Time und Frequency Domain
65 GSa/s sample rate
> 20 GHz bandwidth
1, 2 or 4 channels
> 32 GBaud symbol rate
32 Gb/s
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M8195A 65 GSa/s
AWG
Market and Technology Trends Big Data Demand drives Technology Changes
Challenges:
• Transmission demand exceeds system capacity
• Cost-effective increase of capacity
• Pressure to release new technology on time To maximize transmission within Phy layer, combine & optimize
all dimensions for efficiency, cost, power, reach, reliabiliy etc.
Mobile apps and services,
high resolution devices,
internet of things
drive
high speed I/O, network and data center traffic
Modulation
Sym
bo
l R
ate
Multi level signaling
in digital links,
e.g. C-Phy, PAMx
Amplitude & Phase
modulation in optical links
e.g. QPSK, QAMx
Maximize # of carriers
Parallel lines, subcarrier density
Polarisation Mux, OFDM, DMT
Maximize Bits per Symbol
Maximize Symbol Rate
32 Gbaud and beyond
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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
M8195A 65 GSa/s
AWG 4
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Application Requirements
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Application Requirements
M8195A 65 GSa/s
AWG 6
Coherent Optical Communication
• 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
Need higher data throughput: 100 G 400 G 1 Tbit/s
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Application Requirements
– 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
• Using modulation formats other than NRZ
- multi-level signaling formats, e.g. PAM4, C-PHY
- Multi-carrier modulation , e.g. DMT
Digital Interfaces
PAM8
Clean signal - low jitter
Multi-level signal with distortions
(Example: C-PHY)
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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
M8195A 65 GSa/s
AWG 8
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Application Requirements
– 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 up-
conversion
– They provide ultimate flexibility for pulse patterns, wide
modulation bandwidths and fast hopping (Electronic Warfare
( EW))
– Environmental simulation for EW
M8195A 65 GSa/s
AWG 9
Aerospace Defense & Wireless
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M933xA
81180B
M8190A
M8195A
Keysight Arbitrary Waveform Generators Proprietary Technology - Unique Performance
M9330A / N8241A
15 bit, 1.2 Gsa/s
Best signal quality in PXI
and LXI form factor
81180B
12 Bit, 4.6 GSa/s 1 GHz analog bandwidth
Economic version
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
Choose the performance you need
High Resolution
Wide Bandwidth
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 pp @ 32 Gb/s
SFDR: up to -80 dBc
Integrated 16-tap FIR filter
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M8195A 65 GSa/s AWG
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Go Where you Have Never Been Able to Test Before
– 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
M8195A 65 GSa/s
AWG 12
In Speed, in Bandwidth and in Channel Density
Explore your possibilities
New M8195A 65 GSa/s AWG
– 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 -1.0 … +3.3V
– Ultra low intrinsic jitter
(RJrms < 200 fs @ 32 Gb/s PRBS 211-1)
– 16-tap FIR filter in hardware for frequency
response compensation (*)
– Multi-module synchronization up to 16 channels
per 5-slot AXIe chassis
(*) Rev 2
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M8195A Block Diagram
13
Extended
waveform memory
(16 Gbyte) (*)
FPGA
Trigger (*)
65
GSa/s
DAC
65
GSa/s
DAC
65
GSa/s
DAC
65
GSa/s
DAC
16 tap
FIR(*)
16 tap
FIR(*)
16 tap
FIR(*)
16 tap
FIR(*)
Internal (on-chip)
waveform memory
(4 * 256 Kbyte)
DSP processing for future
enhancements
Precise synchronization
down to femto-seconds
Clean signals through
frequency and phase
response correction
2 Vpp(diff) output
amplitude, 20 GHz
analog bandwidth
(*) Rev 2
M8195A 65 GSa/s
AWG
2 of the 4 may
be designated
as markers
4 differential
outputs
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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
M8195A 65 GSa/s
AWG 14
QPSK, 32 Gbaud PRBS 6 Gbit/s
Without correction With correction Without correction With correction
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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
M8195A 65 GSa/s
AWG 15
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Optical Coherent Communication
M8195A 65 GSa/s AWG
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Generation of Unlimited Number of Modulation Formats
Confidentiality Label
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… and very high throughput
M8195A 65 GSa/s
AWG 18
32 GBaud, 64 QAM = 192 Gb/s data throughput
EVM
3.1 %
Span
51.2 GHz
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Example - OFDM
19
Example: 10 GHz wide OFDM modulation
with QAM16 subcarriers
M8195A 65 GSa/s
AWG 19
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…adding Deterministic Impairments to your Signal n
Example: PAM4 @ symbol rate of 28 GBaud (56 Gbit/s)
Clean Signal With different amounts of jitter added
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AWG 20
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PAM4 Signal with Non-equidistant Voltage Levels
M8195A 65 GSa/s
AWG 21
For usage of external amplifier and Mach-Zehnder modulator beyond linear operating range
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Measurement Setup Block Diagram
DAC1
DAC2
DAC3
DAC4
AWG
Laser
MZM Amplifier PBS EDFA
Coherent
Receiver
I
Y-polarization
Q
I
Q
X-polarization
Fiber
M8195A 65 GSa/s
AWG 22
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Out-of-the Box Calibration & In-situ calibration Pre-distortion techniques for frequency and phase
response compensation
I Q
AWG
33 GHz
Oscilloscope
Vector Signal Analysis (VSA)software
to determine frequency and phase response
I Q
Optionally: optimizing the
second I/Q pair at the same time
M8195A 65 GSa/s
AWG 23
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In-situ-calibration
24
End-to-end equalization
DAC1
DAC2
DAC3
DAC4
AWG
Laser1
MZM Amplifier PBS EDFA
Coherent
Receiver
I
Y-polarization
Q
I
Q
X-polarization
Fiber
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
M8195A 65 GSa/s
AWG
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Optimize your Waveform Pulse Shape affects Signal Waveform
rectangular
Raised cosine
a = 1.0
Raised cosine
a = 0.35
Raised cosine
a = 0.05
Motivation
M8195A 65 GSa/s
AWG 25
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Slightly lower jitter for clean signals, Intrinsic jitter slightly higher, but
but cannot add infinitesimally small distortions can be added smoothly
small amount of timing distortions
-
0 10 20 30 40 50
-1
-0.5
0
0.5
1
0 10 20 30 40 50
-1
-0.5
0
0.5
1
Integer re-sampling Fractional re-sampling
Integer vs. Fractional Re-sampling
32 Gbaud Signals and Beyond
Factor
3 Factor
3.2
M8195A 65 GSa/s
AWG
Fractional re-sampling allows signals > 32 GBaud
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M8195A Re-sampling factor < 2
Integer Re-sampling – 32 Gb/s Fractional Re-sampling – 35 Gb/s
Sample Rate 64 GSa/s
Data Rate 35 Gb/s
PRBS 11
Pulse shaping:
raised cosine,
alpha = 1.0
Sample Rate 64 GSa/s
Data Rate 32 Gb/s
PRBS 11
Pulse shaping:
raised cosine,
alpha = 1.0
Factor
2
Factor
1.8
M8195A 65 GSa/s
AWG 27
Fractional re-sampling allows signals > 32 Gbaud
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M8195A Re-sampling factor > 2
Integer Re-sampling – 32 Gb/s Fractional Re-sampling – 25 Gb/s
Sample Rate 64 GSa/s
Data Rate 25 Gb/s
PRBS 11
Pulse shaping:
raised cosine,
alpha = 1.0
Sample Rate 64 GSa/s
Data Rate 32 Gb/s
PRBS 11
Pulse shaping:
raised cosine,
alpha = 1.0
Factor
2
M8195A 65 GSa/s
AWG 28
At lower baud rates (i.e. re-sampling factor > 2), fractional re-sampling
does not cause any performance loss
Factor
2.6
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Emulate Optical Distortions in the Electrical Space
29
Pattern
Gen
RefTx or
golden
Line Card
Error
Detector
Network or
Fiber (CD,
PMD)
DUT (100/400G
Receiver)
Error
Detector
DUT (100/400G
Receiver)
AWG DUT
(DSP)
ADC
ADC
ADC
ADC
Digital Coherent Receiver DSP Test
AWG - or -
Traditional setup
Test setup with Keysight M8195A
Deterministic and precise testing with complex impairments E.G. Phase Noise, OSNR, PMD
M8195A 65 GSa/s
AWG
OSNR
Gen.
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M8195A 65 GSa/s
AWG
Example Impairment: Phase Noise
30
2 MHz Linewidth
5 MHz Linewidth
10 MHz Linewidth 30
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M8195A in Coherent Optical Applications
– 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
• Emulate optical distortions in the electrical space
M8195A 65 GSa/s
AWG 31
Cost-effective increase in capacity
16 QAM at 32 Gbaud with < 4% EVM
Optical
Modulation GUI
QPSK Signal
with added
phase noise;
emulating a
2 MHz laser
line width
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Digital Interfaces
M8195A 65 GSa/s AWG
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M8000 BER Series of BER Test Solution
M8195A 65 GSa/s
AWG 33
Fast, accurate receiver characterization
16 Gb/s J-BERT M8020A, 4 channel
M8195A > 32 Gbaud multi-level generator,
4 channel*
16 Gb/s J-BERT M8020A, 1 – 2 channel
32 Gb/s J-BERT M8020A, 1 channel
M8070A Software
* Integration in M8070A planned
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M8195A Superior Signal Quality
M8195A 65 GSa/s
AWG 34
Intrinsic Jitter measured with a 32 Gb/s PRBS signal
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But the M8195A Can Do More
M8195A 65 GSa/s
AWG 35
Flexible change of signal parameters such as rise time
in software
Click for animation
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C-PHY signals generated by M8195A
M8195A 65 GSa/s
AWG 36
Clean 2.5 GBaud C-PHY signal
C-PHY signal with distortions
Mix of low power and high-speed
mode on 3 parallel lanes
LP HS
All signals out of a single M8195A module
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M8000 Software with C-PHY Support
M8195A 65 GSa/s
AWG 37
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… Higher Order PAM Modulation…
M8195A 65 GSa/s
AWG 38
PAM4
PAM8
PAM16
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Adding Distortion …
– Adding impairments without external hardware
• Transition times, ISI, Jitter, DCD, noise, …
M8195A 65 GSa/s
AWG 39
Cost-effective PAM-4 solutions
Variable transition times Variable jitter Variable ISI Combination of impairments
Industry leading source for PAM-4
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• Cost effective multi-level, multi-channel capability
M8195A 65 GSa/s
AWG 40
• Compliance test requirements
- Distortions such as jitter, ISI,
noise, pre-, de-emphasis
- Emulation of worst case channels
• 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
Transmitter
(TX)
Receiver
(RX)
Channel TP1 TP2 TP3
0 2 4 6 8 10-20
-15
-10
-5
0
Frequency (GHz)
Loss (
dB
)
Channel Embedding and De-embedding for PAM4 Using S-Parameters or measured in-system
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M8195A in Digital Applications
– 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
M8195A 65 GSa/s
AWG 41
Cost-effective multi-level, multi-channel
capabilities Variable transition times
Variable jitter
Variable ISI
Combination of impairments In
du
str
y le
ad
ing
so
urc
e fo
r P
AM
-4
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Physics & Advanced Research
M8195A 65 GSa/s AWG
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Research the World of Tomorrow
M8195A 65 GSa/s
AWG 43
Ultra-short but precise pulses down to ~100 ps pulse width
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… using Versatile Pulse Shaping
M8195A 65 GSa/s
AWG 44
Precise waveform control with 65 GSa/s or 16 ps sample period
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High Order of Modulation
M8195A 65 GSa/s
AWG 45
QAM1024 with EVM < 1 %
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M8195A in Physics and Advanced Research
– 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
M8195A 65 GSa/s
AWG 46
Release new technologies in time
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Aerospace & Defense and Wireless
M8195A 65 GSa/s AWG
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M8195A in A/D and Wireless Applications
– 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
M8195A 65 GSa/s
AWG 48
Explore your possibilities by using wide Bandwidth
DC 20 GHz
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M8195A – Noise-Power-Ratio Measurements
M8195A 65 GSa/s
AWG 49
Flat Frequency response across wide bandwidth
Multitone 100 tones 10 GHz – 15 GHz Notch 12.5 GHz
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Complex Spectral Environment Simulation
M8195A 65 GSa/s
AWG 50
Using a wideband AWG to simulate 8 emitters in X-band
8 Simulated Radar Emitters with Different Frequencies,
Amplitudes, Pulse Widths, PRIs, and Delays
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M8195A Multi Channel Support
M8195A 65 GSa/s
AWG 51
Scale and expand to your needs
4 channels 16 channels and
1 synchronization Module (*)
(*) Rev 2
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M8195A in A/D and Wireless Applications
– 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
M8195A 65 GSa/s
AWG 52
Explore your possibilities by using wide BW
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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 M8195A 65 GSa/s
AWG 53
*Planned
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Summary
M8195A 65 GSa/s
AWG 54
• 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
Leading performance
65 GSa/s sample rate
> 20 GHz bandwidth
> 32 GBaud symbol rate
1, 2 or 4 channels
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M8195A 65 GSa/s Arbitrary Waveform Generator
More information
www.keysight.com/find/M8195A
New AWG with the highest combination of speed, bandwidth and channel density
&
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Back-Up
M8195A 65 GSa/s AWG
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Example Impairment: PMD (1st and 2nd order)
57
15ps PMD,
460ps^2 SOPMD M8195A 65 GSa/s
AWG
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Instrument Layer
Application Layer
Remote Interface
Test Executive
User
Interface
Application Scripting
M8000 Platform
DUT Evolve over time
M8000 Software Architecture
Integration planned M8195A 65 GSa/s
AWG 58