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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
Page
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
Page 3
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
Page
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
Application Requirements
Page
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
Page
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)
Page
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
Page
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
Page
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
M8195A 65 GSa/s AWG
Page
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
Page
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
Page
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
Page
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
Optical Coherent Communication
M8195A 65 GSa/s AWG
Page
Generation of Unlimited Number of Modulation Formats
Confidentiality Label
Page
… 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
Page
Example - OFDM
19
Example: 10 GHz wide OFDM modulation
with QAM16 subcarriers
M8195A 65 GSa/s
AWG 19
Page
…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
M8195A 65 GSa/s
AWG 20
Page
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
Page
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
Page
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
Page
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
Page
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
Page 26
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
Page
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
Page
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
Page
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.
Page
M8195A 65 GSa/s
AWG
Example Impairment: Phase Noise
30
2 MHz Linewidth
5 MHz Linewidth
10 MHz Linewidth 30
Page
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
Digital Interfaces
M8195A 65 GSa/s AWG
Page
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
Page
M8195A Superior Signal Quality
M8195A 65 GSa/s
AWG 34
Intrinsic Jitter measured with a 32 Gb/s PRBS signal
Page
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
Page
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
Page
M8000 Software with C-PHY Support
M8195A 65 GSa/s
AWG 37
Page
… Higher Order PAM Modulation…
M8195A 65 GSa/s
AWG 38
PAM4
PAM8
PAM16
Page
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
Page
• 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
Page
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
Physics & Advanced Research
M8195A 65 GSa/s AWG
Page
Research the World of Tomorrow
M8195A 65 GSa/s
AWG 43
Ultra-short but precise pulses down to ~100 ps pulse width
Page
… using Versatile Pulse Shaping
M8195A 65 GSa/s
AWG 44
Precise waveform control with 65 GSa/s or 16 ps sample period
Page
High Order of Modulation
M8195A 65 GSa/s
AWG 45
QAM1024 with EVM < 1 %
Page
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
Aerospace & Defense and Wireless
M8195A 65 GSa/s AWG
Page
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
Page
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
Page
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
Page
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
Page
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
Page
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
Page
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
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
&
Back-Up
M8195A 65 GSa/s AWG
Page
Example Impairment: PMD (1st and 2nd order)
57
15ps PMD,
460ps^2 SOPMD M8195A 65 GSa/s
AWG
Page
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
