Find us at www.keysight.com Page 2
M8194A at a glance
The Keysight Technologies, Inc. M8194A arbitrary waveform generator (AWG) has the highest sample
rate and the widest bandwidth in its class with up to four synchronized channels operating simultaneously
in one module
•
Sample rate up to 120 GSa/s (on all 4 channels simultaneously)
•
Analog bandwidth: 45 GHz (typical), generate signals with frequency components up to 50 GHz
1
•
8 bits vertical resolution
•
512 kSa of waveform memory per channel
•
1, 2, or 4 differential channels per 1-slot AXIe module (number of channels is software upgradeable)
•
Amplitude up to 0.8 V
pp
(se) / 1.6 V
pp
(diff.), voltage window -1.0 to +2.5 V
•
Transition time (20%/80%): 11 ps without corrections / 6 ps with corrections applied (typical)
•
Built-in frequency and phase response calibration for clean output signals
•
Up to 4 modules (= 16 channels) can be synchronized
Coherent Optical Applications
400 G and 1 Terabit applications demand a new class of generators that provide high speed, precision
and flexibility at the same time. The M8194A is the ideal solution to test different optical systems from
discrete components like optical power amplifiers to more complex dual polarization systems like optical
modulators or optical receivers.
With up to 4 channels per 1-slot AXIe module, each running at up to 120 GSa/s with 45 GHz of analog
bandwidth, it allows dual polarization testing in a small form factor and the generation of complex signals
with multiple modulation schemes (PAM-4, PAM-8,
QPSK, nQAM) up to 100 GBaud.
Compensation for distortions generated e. g. by
cables and amplifiers can be realized by
embedding/de-embedding the S-parameters of the
respective circuits or by performing an in-situ
calibration using the Keysight Technologies vector
signal analysis software.
Combined with the 81195A optical modulation
generator software, the M8194A makes it easy to
generate optical impairments (e.g. PMD) for
stressing the optical receiver over multiple test
scenarios.
1
At 50 GHz, attenuation is approx. 7.5 dB (refer to figure 3) – can be compensated by digital pre-distortion
Figure 1. 64-QAM at 64 GBaud (electrical)