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M8195A 65 GSa/s Arbitrary Waveform Generator and M8197A Multi-Channel Synchronization Module

Data Sheets

M8195A 65 GSa/s Arbitrary Waveform Generator M8197A Multi-Channel Synchronization Module

Version 3.1

M8195A at a Glance

Go where you have never been able to test before: with real-time mode, sequencing and deep memory - explore your possibilities.

  • Sample rate up to 65 GSa/s (on up to 4 channels)
  • Analog bandwidth: 25 GHz
  • 8 bits vertical resolution
  • Up to 16 GSa of waveform memory per AXIe module
  • 1, 2 or 4 differential channels per 1-slot high AXIe module (number of channels is software upgradeable)
  • Multi-module synchronization
  • Up to 16 channels per 5-slot AXIe chassis 1
  • Advanced 3-level sequencing with external dynamic control 1
  • Load new waveforms on-the-fly without interrupting the playback of the previous one 1 (“memory ping-pong”)
  • Amplitude up to 1 Vpp(se), 2 Vpp(diff), voltage window -1.0 … +3.3 V
  • trise/fall 20%/80% 18 ps (typ). With pre-distortion applied 12 ps (typ)
  • Ultra-low intrinsic jitter (RJrms < 200 fs)
  • Built-in frequency and phase response calibration for clean output signals
  • Up to 64-tap FIR filter in hardware for frequency response compensation
  • Up to 2 markers with 1 sample resolution (markers don’t reduce vertical resolution)
  • Embedded DSP enables real-time waveform and impairment generation

Speed your test by up to 100 times with unique real-time mode.

Key Applications

As devices and interfaces become faster and more complex, the M8195A AWG gives you the versatility to create the signals you need for digital applications, optical and electrical communication, advanced research, wideband radar and satcom.

  • Coherent optical – a single M8195A module can generate two independent I/Q baseband signals (dual polarization = 4 channels) at up to 32 GBaud (and beyond).
  • Multi-level / multi-channel digital signals – generate PRBS 2 , NRZ, PAM4, PAM8, DMT, etc. signals of up to 32 Gbaud. Embed/de-embed channels, add jitter, ISI, noise and other distortions.
  • Physics, chemistry and electronics research – generate any mathematically defined arbitrary waveforms, ultra-short yet precise pulses and extremely wideband chirps.
  • Wideband RF/µW – generate extreme wideband RF signals with an instantaneous bandwidth of DC to 25 GHz for aerospace/defense/communication applications

Coherent optical applications

The M8195A supports leading edge research for 100 Gb/s, 400 Gb/s and 1 Tb/s optical transmission systems that require a very wideband electrical stimulus with a variety of complex modulation formats from QPSK to nQAM to OFDM at symbol rates up to 32 GBaud and beyond.

In order to drive dual-polarization systems, the M8195A has 4 independent, yet precisely synchronized analog output channels in a single module. Since all 4 channels are generated by the same instrument without any external circuitry, precise synchronization down to the femto-second-range can be achieved and maintained.

The M8195A uses digital pre-distortion techniques for frequency- and phaseresponse compensation of the AWG output and any external circuits. These are required in order to achieve a clean signal at the device under test.

Distortions generated by cables, amplifiers, etc. can also be compensated by embedding /de-embedding the S-parameters of the respective circuits or by performing an in-situ calibration using Keysight 81195A Optical Modulation Generator software.

In conjunction with the 81195A Optical Modulation Generator software clean signals and signals stressed with impairment patterns can be generated both offline on a PC or in real-time using the hardware DSP block, which allows the parameters of the waveform (e.g., the pulse shaping filter coefficients) and impairment generation to be adjusted at run-time without downloading a new waveform.

Multi-level/multi-channel digital signals

Increasing the data throughput on digital interfaces has traditionally been accomplished by increasing the data rate or by increasing the number of parallel signals. However, at a certain point, it is more cost-effective to consider multi-level signaling techniques. Examples are high-speed backplane connections using PAM4 or PAM8, and also technologies in the mobile application space.

The M8195A is ideally suited to address those multi-level/multi-channel interfaces using any standard or custom data format, such as PAM-n (n = 3, 4, 5,…) or DMT. The M8195A supports pattern lengths up to PRBS 2 31-1* and baud rates up to 32 GBaud, including the necessary parameter changes, such as variable transition times, various pulse-shaping filters, adding distortions, and can also generate PAM-n signals with non-equidistant voltage levels. The flexibility of the waveform generation at highest speeds, combined with excellent intrinsic jitter performance makes the M8195A truly a future-proof instrument – independent of the direction technology is moving.

At data rates of multiple Gb/s, the effect of cables, board traces, connectors etc. have to be taken into account in order to generate the desired signal at the test point of the device under test. The M8195A incorporates digital pre-distortion techniques for frequency- and phase response compensation of the AWG output and any external circuit to generate the desired signal at the device under test. Channels can be embedded/de-embedded if the S-parameters of the respective circuits are provided.

With up to 4 differential output channels per 1-slot AXIe module and the ability to synchronize multiple modules, the M8195A is well-suited to stimulate multi-lane high-speed interfaces in a very economic fashion.

With the integration of the M8195A AWG into the M8000 Series of BER test solutions, Keysight allows you to address your high-speed digital receiver test needs with the M8070A software platform and choose the BERT or AWG that best meets your needs.

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